/* roulang page: index */
:root{
  --bg:#06080F;
  --bg-2:#0B1024;
  --panel:rgba(18,24,48,.62);
  --panel-solid:#101731;
  --primary:#6D5CE7;
  --primary-2:#8E7BFF;
  --cyan:#35E0C8;
  --gold:#F0C462;
  --text:#E9EDFB;
  --text-2:#A9B3D0;
  --text-3:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-strong:rgba(140,160,220,.3);
  --ok:#4BD08B;
  --warn:#F0A35E;
  --err:#E5636B;
  --r-card:18px;
  --r-media:14px;
  --r-input:12px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset,0 6px 20px rgba(4,6,18,.5);
  --shadow-2:0 1px 0 rgba(255,255,255,.06) inset,0 14px 38px rgba(4,6,18,.6);
  --shadow-3:0 24px 60px rgba(4,6,18,.7);
  --glow:0 0 0 1px rgba(109,92,231,.5),0 8px 30px rgba(109,92,231,.35);
  --glow-hover:0 0 0 1px rgba(53,224,200,.55),0 10px 34px rgba(109,92,231,.4),0 0 24px rgba(53,224,200,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(109,92,231,.20),transparent 62%),
    radial-gradient(760px 460px at 88% 4%,rgba(53,224,200,.10),transparent 60%),
    radial-gradient(1100px 700px at 50% 118%,rgba(142,123,255,.12),transparent 66%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:
    radial-gradient(1.4px 1.4px at 18% 22%,rgba(233,237,251,.55),transparent),
    radial-gradient(1.2px 1.2px at 72% 12%,rgba(233,237,251,.4),transparent),
    radial-gradient(1.2px 1.2px at 42% 68%,rgba(233,237,251,.35),transparent),
    radial-gradient(1.6px 1.6px at 86% 54%,rgba(233,237,251,.4),transparent),
    radial-gradient(1.2px 1.2px at 8% 78%,rgba(233,237,251,.3),transparent);
  background-size:100% 100%;
}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--cyan)}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0 0 12px;font-weight:700;line-height:1.25;letter-spacing:0}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.15}
h2{font-size:clamp(26px,3vw,36px)}
h3{font-size:22px;font-weight:600;line-height:1.4}
h4{font-size:18px;font-weight:600;line-height:1.5}
p{margin:0 0 16px;color:var(--text-2)}
::selection{background:rgba(109,92,231,.45);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E1E}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),#463A9E);border-radius:999px;border:2px solid #0A0E1E}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--primary-2),var(--primary))}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
.section{padding:88px 0;position:relative;z-index:2}
.section-sm{padding:64px 0;position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--cyan);letter-spacing:.08em;
  border:1px solid rgba(53,224,200,.28);background:rgba(53,224,200,.07);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-head p{font-size:16px;margin-bottom:0;max-width:640px}
.text-weak{color:var(--text-3)}
.grad-text{background:linear-gradient(96deg,var(--primary-2),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- buttons ---------- */
.btn-main,.btn-glass,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:12px 24px;min-height:46px;
  border-radius:var(--r-btn);cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-main{
  color:#fff;
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 100%);
  box-shadow:var(--glow);
}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--glow-hover)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-glass{
  color:var(--text);
  background:rgba(18,24,48,.6);
  border-color:var(--line-strong);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
}
.btn-glass:hover{color:var(--cyan);border-color:rgba(53,224,200,.6);transform:translateY(-2px)}
.btn-ghost{
  color:var(--text-2);padding:10px 8px;min-height:44px;position:relative;background:transparent;
}
.btn-ghost::after{
  content:"";position:absolute;left:8px;right:8px;bottom:8px;height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.btn-ghost:hover{color:var(--cyan)}
.btn-ghost:hover::after{transform:scaleX(1)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px}
.btn-block{width:100%}

/* ---------- chips / badges ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:500;color:var(--text-2);
  padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid transparent;transition:all .2s var(--ease);white-space:nowrap;
}
.chip:hover{color:var(--text);background:rgba(140,160,220,.1)}
.chip.is-active{
  color:#fff;background:linear-gradient(120deg,rgba(109,92,231,.95),rgba(53,224,200,.75));
  box-shadow:0 0 18px rgba(109,92,231,.45);
}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(140,160,220,.1);color:var(--text-2);border:1px solid var(--line);
}
.badge-gold{
  background:rgba(240,196,98,.14);color:var(--gold);border-color:rgba(240,196,98,.4);
}
.badge-cyan{
  background:rgba(53,224,200,.12);color:var(--cyan);border-color:rgba(53,224,200,.35);
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030}
.topline{
  height:36px;display:flex;align-items:center;
  background:linear-gradient(90deg,rgba(109,92,231,.16),rgba(53,224,200,.1));
  border-bottom:1px solid var(--line);
  font-size:13px;
}
.topline .container-x{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topline-text{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topline-link{color:var(--cyan);font-weight:600;white-space:nowrap}
.topline-link:hover{color:#fff}

.mainnav{
  background:rgba(6,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.site-header.is-scrolled .mainnav{
  background:rgba(8,11,24,.86);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(3,5,15,.5);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
}
.nav-row{
  display:flex;align-items:center;gap:20px;height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;display:grid;place-items:center;
  filter:drop-shadow(0 0 8px rgba(109,92,231,.7));
}
.brand-mark svg{width:28px;height:28px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:700;color:var(--text)}
.brand-text small{font-size:12px;color:var(--text-3);font-weight:400;letter-spacing:.02em}

.chipbar{
  display:flex;align-items:center;gap:2px;padding:4px;
  background:rgba(18,24,48,.6);border:1px solid var(--line);
  border-radius:var(--r-pill);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  margin:0 auto;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:rgba(18,24,48,.6);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(53,224,200,.55);color:var(--cyan)}

.catbar{
  border-top:1px solid var(--line);
  background:rgba(9,12,26,.55);
}
.catbar-inner{
  display:flex;align-items:center;gap:8px;height:46px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.catbar-inner::-webkit-scrollbar{display:none}
.catbar-label{font-size:13px;color:var(--text-3);flex-shrink:0;padding-right:6px}
.catbar .chip{border:1px solid var(--line);background:rgba(18,24,48,.5)}
.catbar .chip:hover{border-color:rgba(53,224,200,.5);color:var(--cyan)}

/* ---------- hero ---------- */
.hero{
  position:relative;z-index:2;padding:56px 0 64px;overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.hero h1{margin-bottom:18px}
.hero-sub{
  font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  border-top:1px solid var(--line);padding-top:24px;max-width:560px;
}
.hero-metrics .m-val{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--text);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-metrics .m-val em{font-style:normal;color:var(--gold)}
.hero-metrics .m-key{font-size:13px;color:var(--text-3);margin-top:2px}

.hero-visual{position:relative}
.hero-media{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-3);
  aspect-ratio:16/10;
}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,8,15,.1) 0%,rgba(6,8,15,.7) 100%),
             radial-gradient(600px 300px at 78% 12%,rgba(109,92,231,.35),transparent 65%);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.glass-float{
  position:absolute;left:20px;right:20px;bottom:20px;
  background:rgba(18,24,48,.66);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(125%);
  -webkit-backdrop-filter:blur(14px) saturate(125%);
  padding:16px 18px;box-shadow:var(--shadow-2);
}
.glass-float .rowline{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;padding:5px 0;
}
.glass-float .rowline + .rowline{border-top:1px solid var(--line)}
.glass-float .k{color:var(--text-3)}
.glass-float .v{color:var(--text);font-weight:600}
.glass-float .v.gold{color:var(--gold)}
.glass-float .v.cyan{color:var(--cyan)}

/* ---------- generic card ---------- */
.card-x{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  height:100%;
  display:flex;flex-direction:column;
}
.card-x:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.5);box-shadow:var(--shadow-2)}
.card-x h3{font-size:19px;margin-bottom:8px}
.card-x p{font-size:14.5px;color:var(--text-2);margin-bottom:16px}
.card-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(109,92,231,.28),rgba(53,224,200,.16));
  border:1px solid var(--line-strong);margin-bottom:16px;color:var(--cyan);
}
.card-ico svg{width:22px;height:22px}
.card-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--cyan);display:inline-flex;align-items:center;gap:6px}
.card-link svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.card-x:hover .card-link svg{transform:translateX(3px)}

.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

/* ---------- compare table ---------- */
.cmp-wrap{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-2);
}
.cmp-scroll{overflow-x:auto;scrollbar-width:thin}
table.cmp-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:14.5px}
.cmp-table th,.cmp-table td{
  padding:15px 18px;text-align:left;vertical-align:middle;
  border-bottom:1px solid var(--line);
}
.cmp-table thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(14,19,40,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  font-size:14px;font-weight:600;color:var(--text-2);white-space:nowrap;
}
.cmp-table thead th:first-child{color:var(--text);font-size:15px}
.cmp-table tbody th{
  font-weight:500;color:var(--text-2);font-size:14.5px;background:rgba(10,14,30,.4);
}
.cmp-table tbody tr:hover td,.cmp-table tbody tr:hover th{background:rgba(109,92,231,.08)}
.cmp-table td{color:var(--text);font-weight:500;text-align:center}
.cmp-table td:first-child,.cmp-table th:first-child{text-align:left}
.cmp-table .col-rec{position:relative;background:rgba(109,92,231,.09);box-shadow:inset 1px 0 0 rgba(109,92,231,.42),inset -1px 0 0 rgba(109,92,231,.42)}
.cmp-table thead .col-rec{color:var(--gold)}
.cmp-table tbody td.col-rec{color:#fff;font-weight:600}
.cmp-table thead .col-rec .rec-tag{
  position:absolute;top:-1px;left:50%;transform:translate(-50%,-50%);
  background:linear-gradient(120deg,var(--gold),#E0A63C);color:#231A03;
  font-size:12px;font-weight:700;padding:2px 12px;border-radius:var(--r-pill);
  box-shadow:0 4px 14px rgba(240,196,98,.35);white-space:nowrap;
}
.ic-yes{width:18px;height:18px;color:var(--cyan);vertical-align:-3px}
.ic-no{color:rgba(140,160,220,.42);font-weight:400;letter-spacing:1px}

/* level cards */
.level-grid{display:grid;grid-template-columns:1.12fr 1fr 1fr 1fr;gap:20px;align-items:stretch}
.level-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.level-card:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.45)}
.level-card.is-featured{
  background:linear-gradient(170deg,rgba(109,92,231,.24),rgba(18,24,48,.7) 58%);
  border-color:rgba(109,92,231,.6);
  box-shadow:0 0 0 1px rgba(109,92,231,.5),0 18px 44px rgba(109,92,231,.32);
  transform:scale(1.04);
}
.level-card.is-featured:hover{transform:scale(1.04) translateY(-2px);box-shadow:var(--glow-hover)}
.lv-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}
.lv-name{font-size:17px;font-weight:700}
.lv-price{font-size:34px;font-weight:700;line-height:1.1;color:var(--text);font-variant-numeric:tabular-nums;margin-bottom:4px}
.lv-price small{font-size:14px;font-weight:500;color:var(--text-3);margin-left:6px}
.level-card.is-featured .lv-price{color:var(--gold)}
.lv-note{font-size:13px;color:var(--text-3);margin-bottom:18px}
.lv-list{list-style:none;padding:0;margin:0 0 22px;display:flex;flex-direction:column;gap:10px}
.lv-list li{display:flex;gap:9px;font-size:14px;color:var(--text-2);line-height:1.6}
.lv-list svg{width:16px;height:16px;flex:0 0 16px;margin-top:4px;color:var(--cyan)}
.level-card .btn-glass,.level-card .btn-main{margin-top:auto;width:100%}

/* content preview */
.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.pv-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:var(--shadow-1);
}
.pv-card:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.5);box-shadow:var(--shadow-2)}
.pv-media{position:relative;aspect-ratio:3/2;overflow:hidden}
.pv-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.pv-card:hover .pv-media img{transform:scale(1.04)}
.pv-media .pv-badge{position:absolute;top:12px;right:12px}
.pv-lock{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background:rgba(8,11,24,.5);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  color:var(--text);
}
.pv-lock svg{width:26px;height:26px;color:var(--cyan)}
.pv-lock span{font-size:13px;color:var(--text-2)}
.pv-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.pv-body h3{font-size:17px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pv-body p{font-size:14px;color:var(--text-2);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pv-meta{display:flex;align-items:center;gap:8px;margin-top:auto;flex-wrap:wrap}

/* news list */
.news-lead{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:var(--shadow-1);
}
.news-lead:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.5);box-shadow:var(--shadow-2)}
.news-lead .nl-media{aspect-ratio:16/9;overflow:hidden}
.news-lead .nl-media img{width:100%;height:100%;object-fit:cover}
.news-lead .nl-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-lead h3{font-size:21px;margin-bottom:10px}
.news-lead p{font-size:14.5px;margin-bottom:16px}
.news-row{
  display:flex;gap:16px;padding:16px;border:1px solid var(--line);border-radius:var(--r-media);
  background:var(--panel);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.news-row + .news-row{margin-top:12px}
.news-row:hover{border-color:rgba(53,224,200,.5);background:rgba(25,32,60,.7);transform:translateX(2px)}
.news-row .nr-thumb{width:120px;height:80px;flex:0 0 120px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.news-row .nr-thumb img{width:100%;height:100%;object-fit:cover}
.news-row h3{font-size:16px;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-row p{font-size:13.5px;margin-bottom:8px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nr-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--text-3)}
.news-row:hover h3{color:var(--cyan)}
.empty-box{
  min-height:250px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(18,24,48,.35);text-align:center;padding:36px 20px;
}
.empty-box svg{width:40px;height:40px;color:var(--text-3)}
.empty-box p{margin:0;color:var(--text-2);font-size:15px}

/* faq */
.faq-acc .accordion-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none;border:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--cyan);background:rgba(109,92,231,.1)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"";width:11px;height:11px;border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);margin-left:auto;transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{border-color:var(--cyan);transform:rotate(-135deg)}
.faq-acc .accordion-body{padding:0 22px 20px;color:var(--text-2);font-size:14.5px;line-height:1.85}

/* cta band */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(109,92,231,.4);
  background:linear-gradient(120deg,rgba(109,92,231,.28),rgba(53,224,200,.12) 62%,rgba(18,24,48,.7));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:48px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  box-shadow:var(--shadow-2);
}
.cta-band h2{margin-bottom:10px}
.cta-band p{margin-bottom:0;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{
  position:relative;z-index:2;margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,16,36,.6),rgba(6,8,15,.95));
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 36px;
}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--cyan)}
.footer-brand p{font-size:14px;color:var(--text-2);margin:14px 0 0;max-width:320px}
.footer-brand .brand{margin-bottom:4px}
.footer-bar{
  border-top:1px solid var(--line);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bar a{font-size:13px;color:var(--text-2)}

.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1200;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;
  background:rgba(18,24,48,.75);border:1px solid var(--line-strong);color:var(--text);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .22s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--cyan);border-color:rgba(53,224,200,.6)}
.to-top svg{width:18px;height:18px}

/* offcanvas nav */
.nav-drawer{
  background:rgba(10,14,30,.96)!important;border-left:1px solid var(--line)!important;
  color:var(--text);width:min(320px,86vw);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.nav-drawer .offcanvas-body{padding:20px}
.drawer-list{list-style:none;padding:0;margin:0 0 22px;display:flex;flex-direction:column;gap:6px}
.drawer-list a{
  display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text-2);border:1px solid transparent;
}
.drawer-list a:hover,.drawer-list a.is-active{
  color:var(--cyan);background:rgba(109,92,231,.14);border-color:rgba(109,92,231,.36);
}
.drawer-sep{height:1px;background:var(--line);margin:18px 0}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .level-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .level-card.is-featured{transform:none}
  .level-card.is-featured:hover{transform:translateY(-2px)}
}
@media (max-width:991px){
  .container-x{padding:0 20px}
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .chipbar{display:none}
  .nav-toggle{display:inline-flex}
  .nav-row{height:58px;gap:12px}
  .nav-actions .btn-ghost{display:none}
  .hero{padding:36px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:2}
  .hero-metrics{max-width:100%}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .preview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px}
  .cta-band{grid-template-columns:1fr;padding:36px}
}
@media (max-width:767px){
  .container-x{padding:0 16px}
  .section{padding:48px 0}
  .topline-text{font-size:12px}
  .brand-text small{display:none}
  .grid-4,.grid-3,.grid-2,.preview-grid,.level-grid{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .hero-metrics .m-key{font-size:12px}
  .hero-cta .btn-main,.hero-cta .btn-glass{width:100%}
  .news-row{flex-direction:column}
  .news-row .nr-thumb{width:100%;flex:none;height:150px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bar{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-band{padding:28px 20px}
  .cta-actions .btn-main,.cta-actions .btn-glass{width:100%}
  .glass-float{position:static;margin-top:14px;left:auto;right:auto;bottom:auto}
}
@media (max-width:520px){
  h1{font-size:30px}
  .hero-metrics{grid-template-columns:1fr;gap:12px}
  .hero-metrics .metric + .metric{border-top:1px solid var(--line);padding-top:12px}
  .card-x{padding:18px}
  .brand-text b{font-size:14.5px}
}

/* roulang page: article */
:root{
  --bg:#06080F;
  --bg-soft:#0B1024;
  --panel:rgba(18,24,48,.62);
  --panel-solid:#111734;
  --primary:#6D5CE7;
  --primary-2:#8E7BFF;
  --teal:#35E0C8;
  --gold:#F0C462;
  --text:#E9EDFB;
  --text-2:#A9B3D0;
  --text-3:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-strong:rgba(140,160,220,.3);
  --ok:#4BD08B;
  --warn:#F0A35E;
  --err:#E5636B;
  --r-card:18px;
  --r-inner:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(4,7,18,.45);
  --sh-2:0 14px 40px rgba(4,7,18,.6);
  --sh-glow:0 0 0 1px rgba(109,92,231,.5),0 8px 30px rgba(109,92,231,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:88px;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 500px at 12% -6%,rgba(109,92,231,.20),transparent 62%),
    radial-gradient(700px 420px at 92% 4%,rgba(53,224,200,.10),transparent 60%),
    radial-gradient(2px 2px at 18% 22%,rgba(233,237,251,.35),transparent 100%),
    radial-gradient(2px 2px at 68% 12%,rgba(233,237,251,.22),transparent 100%),
    radial-gradient(2px 2px at 84% 42%,rgba(233,237,251,.18),transparent 100%);
  background-attachment:fixed;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#7FF0DC;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.005em;line-height:1.28;}
p{margin:0 0 var(--sp-2);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 顶部细条 ---------- */
.topline{background:linear-gradient(90deg,rgba(109,92,231,.28),rgba(53,224,200,.14));border-bottom:1px solid var(--line);}
.topline .container-x{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topline-text{font-size:13px;color:var(--text-2);}
.topline-link{font-size:13px;color:var(--text);border-bottom:1px solid rgba(53,224,200,.5);}
.topline-link:hover{color:var(--teal);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(6,8,15,.72);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease);}
.site-header.is-scrolled{background:rgba(8,11,24,.88);backdrop-filter:blur(16px) saturate(130%);border-bottom-color:var(--line);}
.mainnav{padding:0;}
.nav-row{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{width:28px;height:28px;display:inline-flex;flex:0 0 auto;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text small{font-size:12px;color:var(--text-3);font-weight:400;}
.chipbar{display:flex;align-items:center;gap:4px;padding:4px;border-radius:var(--r-pill);background:rgba(18,24,48,.6);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(14px) saturate(120%);}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;color:var(--text-2);white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease);}
.chip:hover{color:var(--text);background:rgba(255,255,255,.05);}
.chip.is-active{color:#fff;background:linear-gradient(120deg,var(--primary),var(--teal));box-shadow:0 4px 16px rgba(109,92,231,.42);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.btn-ghost{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-input);font-size:14px;color:var(--text-2);border:1px solid var(--line);transition:all .2s var(--ease);}
.btn-ghost:hover{color:var(--text);border-color:var(--teal);box-shadow:0 0 0 1px rgba(53,224,200,.35);}
.btn-main{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:var(--r-input);font-size:15px;font-weight:600;color:#fff;background:linear-gradient(120deg,var(--primary),var(--primary-2));box-shadow:var(--sh-glow);border:0;transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(109,92,231,.6),0 10px 34px rgba(109,92,231,.45),0 0 24px rgba(53,224,200,.35);}
.btn-main:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-line{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:var(--r-input);font-size:15px;color:var(--text);background:rgba(18,24,48,.6);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(12px);transition:all .2s var(--ease);}
.btn-line:hover{color:#fff;border-color:var(--teal);transform:translateY(-2px);box-shadow:0 0 20px rgba(53,224,200,.28);}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-input);background:rgba(18,24,48,.6);border:1px solid var(--line);color:var(--text);}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal);}
.catbar{border-top:1px solid var(--line);background:rgba(11,16,36,.5);}
.catbar-inner{display:flex;align-items:center;gap:8px;min-height:46px;overflow-x:auto;scrollbar-width:none;}
.catbar-inner::-webkit-scrollbar{display:none;}
.catbar-label{font-size:13px;color:var(--text-3);flex:0 0 auto;margin-right:4px;}
.cat-item{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;color:var(--text-2);border:1px solid var(--line);white-space:nowrap;transition:all .2s var(--ease);}
.cat-item:hover{color:var(--text);border-color:var(--teal);background:rgba(53,224,200,.08);}
.cat-item.is-active{color:#fff;background:linear-gradient(120deg,var(--primary),var(--teal));border-color:transparent;}

.offcanvas{background:rgba(11,16,36,.96);color:var(--text);border-left:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:16px;}
.drawer-list a{display:block;padding:14px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);}
.drawer-list a:hover{color:var(--teal);}
.btn-close{filter:invert(1) grayscale(1) brightness(1.8);}

/* ---------- 文章页 ---------- */
.page-main{padding:32px 0 0;}
.crumb-nav{margin-bottom:22px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--teal);}
.crumb [aria-current="page"]{color:var(--text-3);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-hero{padding-bottom:var(--sp-5);border-bottom:1px solid var(--line);margin-bottom:var(--sp-5);}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:var(--sp-4);align-items:center;}
.hero-chip{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;color:var(--teal);background:rgba(53,224,200,.1);border:1px solid rgba(53,224,200,.3);margin-bottom:16px;}
.article-h1{font-size:clamp(28px,3.4vw,42px);line-height:1.22;margin-bottom:16px;}
.article-lead{font-size:16px;color:var(--text-2);max-width:62ch;margin-bottom:20px;}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;color:var(--text-3);}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row svg{width:15px;height:15px;color:var(--text-3);}
.article-cover{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--panel-solid);box-shadow:var(--sh-2);}
.article-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;max-height:40vh;}

.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:var(--sp-4);align-items:start;}
.article-shell{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:var(--sp-4);backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--sh-1);}
.article-body{max-width:820px;font-size:17.5px;line-height:1.9;color:var(--text);}
.article-body>*+*{margin-top:18px;}
.article-body p{color:var(--text-2);margin:0 0 18px;}
.article-body h2{position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin:40px 0 16px;padding-left:16px;}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--primary-2),var(--teal));}
.article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:var(--text);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--text);}
.article-body a{color:var(--teal);border-bottom:1px solid rgba(53,224,200,.35);}
.article-body a:hover{color:#8CF5E2;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px;color:var(--text-2);}
.article-body ul>li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:linear-gradient(120deg,var(--primary-2),var(--teal));}
.article-body ol{counter-reset:li;}
.article-body ol>li{counter-increment:li;}
.article-body ol>li::before{content:counter(li);position:absolute;left:0;top:.2em;font-size:13px;font-weight:700;color:var(--teal);}
.article-body blockquote{margin:24px 0;padding:18px 22px;border-radius:var(--r-inner);background:rgba(18,24,48,.62);border:1px solid rgba(255,255,255,.08);border-left:3px solid var(--primary-2);color:var(--text-2);backdrop-filter:blur(14px);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-inner);margin:24px auto;border:1px solid var(--line);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-inner);overflow:hidden;}
.article-body th{background:rgba(18,24,48,.85);color:var(--text);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:rgba(109,92,231,.16);border:1px solid rgba(109,92,231,.3);border-radius:6px;padding:2px 6px;color:#CFC6FF;}
.article-body pre{background:rgba(6,8,15,.85);border:1px solid var(--line);border-radius:var(--r-inner);padding:16px;overflow-x:auto;}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.empty-box{text-align:center;padding:64px 24px;border-radius:var(--r-card);border:1px dashed var(--line-strong);background:rgba(18,24,48,.5);}
.empty-box svg{width:44px;height:44px;color:var(--text-3);margin-bottom:16px;}
.empty-box h2{font-size:22px;margin-bottom:10px;}
.empty-box p{color:var(--text-2);margin-bottom:20px;}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:var(--sp-4);padding-top:var(--sp-3);border-top:1px solid var(--line);}
.tag-label{font-size:13px;color:var(--text-3);margin-right:4px;}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;color:var(--text-2);background:rgba(18,24,48,.7);border:1px solid var(--line);transition:all .2s var(--ease);}
.tag:hover{color:var(--teal);border-color:var(--teal);}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-2);margin-top:var(--sp-4);}
.pager a{display:block;padding:18px 20px;border-radius:var(--r-card);background:var(--panel);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(14px);transition:all .2s var(--ease);}
.pager a:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:0 0 24px rgba(53,224,200,.2);}
.pager small{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px;}
.pager b{display:block;font-size:15px;color:var(--text);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.pager .pager-next{text-align:right;}

.side-col{display:flex;flex-direction:column;gap:var(--sp-3);position:sticky;top:96px;}
.side-card{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:20px;backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--sh-1);}
.side-card h3{font-size:15px;margin-bottom:14px;color:var(--text);}
.side-list li+li{margin-top:2px;}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:var(--r-input);font-size:14px;color:var(--text-2);transition:all .2s var(--ease);}
.side-list a:hover{color:var(--text);background:rgba(109,92,231,.16);}
.side-list svg{width:14px;height:14px;color:var(--text-3);flex:0 0 auto;}
.side-cta{background:linear-gradient(150deg,rgba(109,92,231,.28),rgba(53,224,200,.12));border-color:rgba(109,92,231,.4);}
.side-cta p{font-size:13px;color:var(--text-2);margin-bottom:14px;}
.side-cta .btn-main{width:100%;}

/* ---------- 相关推荐 ---------- */
.section{padding:var(--sp-6) 0;}
.section-head{max-width:720px;margin-bottom:var(--sp-4);}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;margin:0;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card-x{display:flex;flex-direction:column;background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);overflow:hidden;backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--sh-1);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);height:100%;}
.card-x:hover{transform:translateY(-2px);border-color:var(--teal);box-shadow:0 0 26px rgba(53,224,200,.22);}
.card-x .cover{aspect-ratio:3/2;overflow:hidden;}
.card-x .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card-x:hover .cover img{transform:scale(1.04);}
.card-x .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-x h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-x .desc{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.card-x .meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);}
.badge-chip{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;color:var(--teal);background:rgba(53,224,200,.1);border:1px solid rgba(53,224,200,.28);}

.backband{background:linear-gradient(120deg,rgba(109,92,231,.22),rgba(53,224,200,.1));border:1px solid rgba(109,92,231,.32);border-radius:var(--r-card);padding:32px;display:flex;align-items:center;justify-content:space-between;gap:24px;backdrop-filter:blur(14px);}
.backband h2{font-size:22px;margin-bottom:8px;}
.backband p{color:var(--text-2);font-size:14px;margin:0;}
.backband-actions{display:flex;gap:12px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--sp-6);background:linear-gradient(180deg,rgba(11,16,36,.7),rgba(6,8,15,.98));border-top:1px solid var(--line);padding-top:var(--sp-6);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--sp-4);padding-bottom:var(--sp-5);}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;font-weight:600;}
.footer-col ul li+li{margin-top:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--teal);}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:34ch;margin:0;}
.footer-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.footer-bar a{color:var(--text-2);}
.footer-bar a:hover{color:var(--teal);}

#backTop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(18,24,48,.85);border:1px solid var(--line);color:var(--text);backdrop-filter:blur(12px);box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .24s var(--ease);z-index:1040;}
#backTop.is-on{opacity:1;visibility:visible;transform:none;}
#backTop:hover{color:var(--teal);border-color:var(--teal);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-wrap{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-col>*{flex:1 1 260px;}
}
@media (max-width:991.98px){
  .nav-row{height:58px;gap:12px;}
  .chipbar{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text small{display:none;}
  .btn-ghost{display:none;}
  .article-hero-grid{grid-template-columns:minmax(0,1fr);}
  .article-cover{order:-1;}
  .article-cover img{aspect-ratio:16/9;max-height:34vh;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .backband{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .section{padding:64px 0;}
}
@media (max-width:767.98px){
  .container-x{padding:0 16px;}
  body{font-size:15px;}
  .topline-text{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .topline-link{display:none;}
  .article-h1{font-size:clamp(24px,6vw,30px);}
  .article-shell{padding:20px;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager .pager-next{text-align:left;}
  .backband{padding:24px;}
  .backband-actions{flex-direction:column;width:100%;}
  .backband-actions a{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:48px 0;}
}
@media (max-width:575.98px){
  .btn-main,.btn-line{width:100%;}
  .nav-actions .btn-main{width:auto;}
  .crumb [aria-current="page"]{max-width:180px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg:#06080F;
  --bg-2:#0B1024;
  --bg-3:#101736;
  --primary:#6D5CE7;
  --primary-2:#8E7BFF;
  --accent:#35E0C8;
  --gold:#F0C462;
  --ok:#4BD08B;
  --warn:#F0A35E;
  --err:#E5636B;
  --text:#E9EDFB;
  --text-2:#A9B3D0;
  --text-3:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-2:rgba(140,160,220,.3);
  --glass:rgba(18,24,48,.62);
  --glass-2:rgba(18,24,48,.86);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.04), 0 10px 26px rgba(4,6,18,.5);
  --sh-2:0 16px 40px rgba(4,6,18,.62), 0 0 0 1px rgba(53,224,200,.16);
  --sh-glow:0 0 0 1px rgba(109,92,231,.5), 0 10px 32px rgba(109,92,231,.32);
  --t:.22s cubic-bezier(.22,.61,.36,1);
  --h-nav:68px;
  --bs-body-bg:#06080F;
  --bs-body-color:#E9EDFB;
  --bs-primary:#6D5CE7;
  --bs-link-color:#8E7BFF;
  --bs-link-hover-color:#35E0C8;
  --bs-border-color:rgba(140,160,220,.16);
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    radial-gradient(circle, rgba(233,237,251,.13) 1px, transparent 1px);
  background-size:52px 52px;
  opacity:.55;
  pointer-events:none;
  z-index:0;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 55%, rgba(0,0,0,.85));
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 55%, rgba(0,0,0,.85));
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(109,92,231,.20), transparent 62%),
    radial-gradient(900px 520px at 92% 2%, rgba(53,224,200,.10), transparent 60%),
    radial-gradient(760px 460px at 50% 108%, rgba(109,92,231,.14), transparent 66%);
  pointer-events:none;
  z-index:0;
}
main,.site-header,.site-footer{position:relative;z-index:1}

img{max-width:100%;display:block}
a{color:var(--primary-2);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
a:hover{color:var(--accent)}
button{font:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--text);line-height:1.25}
p{margin:0}
::selection{background:rgba(109,92,231,.45);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B16}
::-webkit-scrollbar-thumb{background:rgba(109,92,231,.5);border-radius:999px;border:2px solid #080B16}
::-webkit-scrollbar-thumb:hover{background:rgba(53,224,200,.6)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,8,15,.74);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:rgba(8,11,22,.86);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.topline{
  background:linear-gradient(90deg, rgba(109,92,231,.16), rgba(53,224,200,.06) 55%, transparent);
  border-bottom:1px solid var(--line);
}
.topline .container-x{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topline-text{font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topline-link{font-size:13px;color:var(--accent);white-space:nowrap}
.topline-link:hover{color:#fff}

.mainnav .nav-row{
  min-height:var(--h-nav);
  display:flex;
  align-items:center;
  gap:22px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{width:28px;height:28px;display:inline-flex;flex:0 0 auto}
.brand-mark svg{width:28px;height:28px;display:block}
.brand-text b{display:block;font-size:16px;font-weight:700;color:var(--text);line-height:1.2;white-space:nowrap}
.brand-text small{display:block;font-size:12px;color:var(--text-3);line-height:1.4}
.brand:hover .brand-text b{color:#fff}

.chipbar{
  display:flex;
  align-items:center;
  gap:4px;
  padding:4px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  max-width:100%;
}
.chipbar::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  padding:7px 14px;
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  white-space:nowrap;
  line-height:1.4;
}
.chip:hover{color:var(--text);background:rgba(140,160,220,.1)}
.chip.is-active{
  background:linear-gradient(120deg,#8E7BFF,#35E0C8);
  color:#06080F;
  font-weight:600;
  box-shadow:0 6px 20px rgba(109,92,231,.35);
}
.chip.is-active:hover{color:#06080F}

.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(120deg,#6D5CE7,#8E7BFF);
  color:#fff;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  box-shadow:var(--sh-glow);
  transition:transform var(--t),box-shadow var(--t),color var(--t);
}
.btn-main:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(109,92,231,.6),0 14px 36px rgba(109,92,231,.48),0 0 24px rgba(53,224,200,.42);
}
.btn-main:active{transform:translateY(0)}
.btn-main.btn-sm{padding:9px 16px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-2);
  background:rgba(18,24,48,.5);
  color:var(--text);
  font-size:14.5px;
  font-weight:500;
  line-height:1.2;
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.btn-ghost:hover{border-color:rgba(53,224,200,.55);color:#fff;background:rgba(53,224,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}

.nav-toggle{
  display:none;
  align-items:center;justify-content:center;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-2);
  background:rgba(18,24,48,.5);
  color:var(--text);
  cursor:pointer;
  transition:border-color var(--t),color var(--t);
}
.nav-toggle:hover{border-color:rgba(53,224,200,.55);color:var(--accent)}

.catbar{border-top:1px solid var(--line);background:rgba(11,16,36,.5)}
.catbar-inner{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:52px;
  overflow-x:auto;
  scrollbar-width:none;
}
.catbar-inner::-webkit-scrollbar{display:none}
.catbar-label{font-size:12.5px;color:var(--text-3);white-space:nowrap;letter-spacing:.06em;flex:0 0 auto}
.cat-item{
  flex:0 0 auto;
  padding:7px 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:13.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.cat-item:hover{border-color:rgba(53,224,200,.45);color:var(--text)}
.cat-item.is-active{
  background:rgba(109,92,231,.2);
  border-color:rgba(109,92,231,.62);
  color:#fff;
  font-weight:600;
}

/* ---------- offcanvas ---------- */
.offcanvas.drawer{
  background:rgba(9,13,28,.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  color:var(--text);
  border-left:1px solid var(--line);
  width:320px;
}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer .offcanvas-title{font-size:15px;font-weight:700;color:var(--text)}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.7);opacity:.7}
.drawer .offcanvas-body{padding:18px 20px 28px}
.drawer-title{font-size:12.5px;color:var(--text-3);letter-spacing:.08em;margin:18px 0 10px}
.drawer-title:first-child{margin-top:0}
.drawer-list{list-style:none}
.drawer-list li+li{margin-top:8px}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14.5px;
}
.drawer-list a:hover{border-color:rgba(53,224,200,.45);color:var(--text)}
.drawer-list a.is-active{background:rgba(109,92,231,.18);border-color:rgba(109,92,231,.6);color:#fff}
.drawer-list a span{font-size:12px;color:var(--text-3)}

/* ---------- breadcrumb ---------- */
.crumb{
  list-style:none;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--text-3);opacity:.7}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--accent)}
.crumb [aria-current="page"]{color:var(--text-3)}

/* ---------- hero ---------- */
.cat-hero{
  padding:52px 0 64px;
  position:relative;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(109,92,231,.30), transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(53,224,200,.35);
  background:rgba(53,224,200,.08);
  color:var(--accent);
  font-size:13px;
  margin-bottom:18px;
}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.15;font-weight:700}
.hero-lead{
  margin-top:16px;
  font-size:16.5px;
  color:var(--text-2);
  max-width:620px;
}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-facts{
  list-style:none;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin-top:32px;
}
.fact{
  padding:14px 16px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.fact b{display:block;font-size:16px;color:var(--text);font-weight:700}
.fact span{display:block;font-size:13px;color:var(--text-3);line-height:1.6;margin-top:4px}
.hero-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  margin:0;
}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,8,15,0) 40%, rgba(6,8,15,.72));
  pointer-events:none;
}
.hero-float{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  z-index:2;
  padding:14px 16px;
  border-radius:var(--r-img);
  background:rgba(18,24,48,.72);
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.float-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px}
.float-row+.float-row{margin-top:8px}
.float-row span{color:var(--text-3)}
.float-row b{color:var(--text);font-weight:600}
.float-row b.accent{color:var(--accent)}

/* ---------- seg bar ---------- */
.segwrap{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(11,16,36,.42);
}
.segbar{
  display:flex;
  gap:8px;
  padding:14px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.segbar::-webkit-scrollbar{display:none}
.seg{
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.seg:hover{border-color:rgba(53,224,200,.5);color:var(--text)}
.seg.is-active{background:rgba(109,92,231,.2);border-color:rgba(109,92,231,.6);color:#fff;font-weight:600}

/* ---------- section ---------- */
.section{padding:88px 0;position:relative}
.section.alt{background:rgba(11,16,36,.45);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-title{font-size:clamp(26px,3vw,36px);line-height:1.25}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15.5px}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
[id]{scroll-margin-top:140px}

/* ---------- timeline ---------- */
.sticky-col{position:sticky;top:150px}
.tl-head{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.tl-head .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(53,224,200,.8)}
.timeline{list-style:none;position:relative;padding-left:8px}
.timeline li{position:relative;padding:0 0 26px 40px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";
  position:absolute;left:13px;top:32px;bottom:0;
  width:1px;
  background:linear-gradient(180deg, rgba(109,92,231,.6), rgba(140,160,220,.12));
}
.timeline li:last-child::before{display:none}
.tl-index{
  position:absolute;left:0;top:0;
  width:27px;height:27px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  color:#06080F;
  background:linear-gradient(120deg,#8E7BFF,#35E0C8);
  box-shadow:0 0 0 4px rgba(109,92,231,.14);
}
.tl-title{font-size:16.5px;font-weight:600;color:var(--text)}
.tl-text{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7}
.tl-time{display:inline-block;margin-top:8px;font-size:12.5px;color:var(--text-3);border:1px solid var(--line);border-radius:var(--r-pill);padding:2px 10px}

/* ---------- doc cards ---------- */
.doc-list{display:flex;flex-direction:column;gap:20px}
.doc-card{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:20px;
  padding:18px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--sh-1);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.doc-card:hover{border-color:rgba(53,224,200,.45);transform:translateY(-2px);box-shadow:var(--sh-2)}
.doc-thumb{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.doc-thumb img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover}
.doc-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.doc-body h3{font-size:18px;line-height:1.45}
.doc-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.doc-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:10px}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 11px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(140,160,220,.08);
}
.tag.tag-accent{border-color:rgba(53,224,200,.4);color:var(--accent);background:rgba(53,224,200,.08)}
.tag.tag-gold{border-color:rgba(240,196,98,.4);color:var(--gold);background:rgba(240,196,98,.08)}

/* ---------- device list ---------- */
.dev-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.dev-item{
  display:grid;
  grid-template-columns:180px 1fr auto;
  align-items:center;
  gap:18px;
  padding:16px 20px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  transition:border-color var(--t),background var(--t);
}
.dev-item:hover{border-color:rgba(53,224,200,.42);background:rgba(18,24,48,.78)}
.dev-name{font-size:15.5px;font-weight:600;color:var(--text)}
.dev-note{font-size:14px;color:var(--text-2)}
.badge-ok,.badge-warn{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  white-space:nowrap;
}
.badge-ok{color:var(--ok);border:1px solid rgba(75,208,139,.4);background:rgba(75,208,139,.1)}
.badge-warn{color:var(--warn);border:1px solid rgba(240,163,94,.4);background:rgba(240,163,94,.1)}

/* ---------- check list ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px 24px;
}
.check-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 18px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:rgba(18,24,48,.42);
  transition:border-color var(--t);
}
.check-item:hover{border-color:rgba(53,224,200,.4)}
.check-item svg{flex:0 0 auto;margin-top:3px;color:var(--accent)}
.check-item b{display:block;font-size:15px;font-weight:600;color:var(--text)}
.check-item span{display:block;margin-top:4px;font-size:13.5px;color:var(--text-2);line-height:1.65}

/* ---------- accordion / faq ---------- */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--line);--bs-accordion-btn-color:var(--text);--bs-accordion-color:var(--text-2);--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;--bs-accordion-active-color:#fff;--bs-accordion-border-radius:var(--r-card);--bs-accordion-inner-border-radius:var(--r-card)}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line)!important;
  border-radius:var(--r-card)!important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 20px;
  line-height:1.6;
  transition:background var(--t),color var(--t);
}
.accordion-button:not(.collapsed){background:rgba(109,92,231,.12);color:#fff;box-shadow:none}
.accordion-button:hover{background:rgba(109,92,231,.08)}
.accordion-button::after{filter:brightness(0) invert(1);opacity:.6}
.accordion-body{padding:4px 20px 20px;font-size:14.5px;line-height:1.8;color:var(--text-2)}
.accordion-button:focus{box-shadow:none}

/* ---------- cta band ---------- */
.cta-band{
  margin:0 auto;
  padding:38px 36px;
  border-radius:var(--r-card);
  border:1px solid rgba(109,92,231,.4);
  background:
    radial-gradient(600px 260px at 12% 0%, rgba(109,92,231,.26), transparent 62%),
    radial-gradient(520px 240px at 92% 100%, rgba(53,224,200,.16), transparent 60%),
    rgba(18,24,48,.7);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px)}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:600px}
.cta-band .cta-row{margin-top:0}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(11,16,36,.6), rgba(6,8,15,.95));
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--accent)}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px}
.footer-col{position:relative}
.footer-col+.footer-col{padding-left:36px}
.footer-col+.footer-col::before{
  content:"";
  position:absolute;left:0;top:4px;bottom:4px;
  width:1px;
  background:linear-gradient(180deg, rgba(140,160,220,.05), rgba(140,160,220,.22), rgba(140,160,220,.05));
}
.footer-bar{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bar a{color:var(--text-2);font-size:13px}
.footer-bar a:hover{color:var(--accent)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  z-index:1040;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-2);
  background:rgba(18,24,48,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:var(--text);
  font-size:13.5px;
  box-shadow:var(--sh-1);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),border-color var(--t);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(53,224,200,.55);color:var(--accent)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container-x{max-width:1000px}
  .hero-facts{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:991.98px){
  :root{--h-nav:58px}
  .container-x{padding:0 18px}
  .topline .container-x{height:34px}
  .topline-text{font-size:12.5px}
  .mainnav .nav-row{flex-wrap:wrap;min-height:58px;padding:8px 0 0;gap:12px;align-items:center}
  .chipbar{order:5;flex-basis:100%;width:100%;margin:0 0 8px;border-radius:14px}
  .catbar{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .brand-text small{display:none}
  .section{padding:64px 0}
  .cat-hero{padding:40px 0 48px}
  .sticky-col{position:static;top:auto}
  .doc-card{grid-template-columns:170px 1fr}
  .dev-item{grid-template-columns:150px 1fr auto;gap:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col+.footer-col{padding-left:0}
  .footer-col+.footer-col::before{display:none}
  .cta-band{padding:30px 26px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .container-x{padding:0 16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  h1{font-size:clamp(28px,7.4vw,34px)}
  .hero-lead{font-size:15.5px}
  .hero-facts{grid-template-columns:1fr;gap:10px;margin-top:24px}
  .cta-row{gap:12px}
  .cta-row .btn-main,.cta-row .btn-ghost{width:100%}
  .doc-card{grid-template-columns:1fr;padding:16px}
  .doc-thumb img{aspect-ratio:16/9}
  .dev-item{grid-template-columns:1fr;gap:8px;align-items:flex-start}
  .check-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px}
  .footer-bar{justify-content:flex-start}
  .to-top{right:16px;bottom:16px;padding:10px 14px}
  .cta-band{padding:26px 20px}
}
@media (max-width:575.98px){
  .topline-text{max-width:62vw}
  .brand-text b{font-size:15px}
  .accordion-button{font-size:15px;padding:16px}
  .accordion-body{padding:2px 16px 18px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#06080F;
  --bg-2:#0B1024;
  --panel:rgba(18,24,48,.62);
  --panel-2:rgba(18,24,48,.78);
  --brand:#6D5CE7;
  --brand-2:#8E7BFF;
  --cyan:#35E0C8;
  --gold:#F0C462;
  --text:#E9EDFB;
  --text-2:#A9B3D0;
  --text-3:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-soft:rgba(255,255,255,.08);
  --ok:#4BD08B;
  --warn:#F0A35E;
  --err:#E5636B;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(3,6,18,.45);
  --sh-2:0 12px 34px rgba(3,6,18,.6);
  --sh-glow:0 0 0 1px rgba(109,92,231,.5),0 8px 30px rgba(109,92,231,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(1.2px 1.2px at 12% 18%, rgba(233,237,251,.5) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 78% 12%, rgba(233,237,251,.34) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 42% 62%, rgba(53,224,200,.32) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 88% 74%, rgba(142,123,255,.4) 50%, transparent 51%),
    radial-gradient(1.1px 1.1px at 26% 86%, rgba(233,237,251,.28) 50%, transparent 51%),
    radial-gradient(1200px 700px at 78% -10%, rgba(109,92,231,.18), transparent 60%),
    radial-gradient(900px 600px at 8% 22%, rgba(53,224,200,.08), transparent 62%);
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--text)}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.15}
h2{font-size:clamp(26px,3vw,36px);line-height:1.25}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(109,92,231,.45);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B16}
::-webkit-scrollbar-thumb{background:rgba(109,92,231,.45);border-radius:99px;border:2px solid #080B16}
::-webkit-scrollbar-thumb:hover{background:rgba(142,123,255,.7)}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- top line ---------- */
.topline{
  position:relative;
  z-index:60;
  height:36px;
  background:linear-gradient(90deg,rgba(109,92,231,.22),rgba(53,224,200,.14));
  border-bottom:1px solid var(--line);
}
.topline .container-x{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topline-text{font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topline-link{font-size:13px;color:var(--cyan);border-bottom:1px solid rgba(53,224,200,.4);padding-bottom:1px;white-space:nowrap}
.topline-link:hover{color:#7ff0dd;border-color:#7ff0dd}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,8,15,.86);backdrop-filter:blur(0px);transition:background .22s var(--ease),backdrop-filter .22s var(--ease),box-shadow .22s var(--ease)}
.site-header.is-scrolled{background:rgba(8,11,22,.72);backdrop-filter:blur(14px) saturate(120%);box-shadow:0 1px 0 rgba(255,255,255,.08),0 14px 34px rgba(3,6,18,.5)}
.mainnav{border-bottom:1px solid var(--line)}
.nav-row{height:var(--nav-h);display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;flex:0 0 28px;display:inline-flex}
.brand-mark svg{width:28px;height:28px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16px;font-weight:700;color:var(--text);letter-spacing:0}
.brand-text small{font-size:12px;color:var(--text-3);font-weight:400;margin-top:2px}
.brand:hover .brand-text b{color:#fff}

.chipbar{
  display:flex;
  align-items:center;
  gap:4px;
  padding:4px;
  border-radius:var(--r-pill);
  background:var(--panel);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{color:var(--text);background:rgba(142,123,255,.12)}
.chip.is-active{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--cyan));
  box-shadow:0 4px 18px rgba(109,92,231,.4);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-actions .btn-ghost{font-size:13.5px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-input);
  color:var(--text);
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(53,224,200,.5);color:var(--cyan)}

/* ---------- category bar ---------- */
.catbar{background:rgba(11,16,36,.6);border-bottom:1px solid var(--line)}
.catbar-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.catbar-inner::-webkit-scrollbar{display:none}
.catbar-label{font-size:12px;color:var(--text-3);letter-spacing:.08em;margin-right:6px;flex:0 0 auto}
.cat-link{
  display:inline-flex;align-items:center;gap:7px;
  height:34px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);
  border:1px solid transparent;white-space:nowrap;
  transition:all .18s var(--ease);
}
.cat-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.cat-link:hover{color:var(--text);border-color:rgba(53,224,200,.45);background:rgba(53,224,200,.08)}
.cat-link.is-active{color:#fff;background:rgba(109,92,231,.24);border-color:rgba(142,123,255,.55);box-shadow:0 0 0 1px rgba(109,92,231,.2)}

/* ---------- offcanvas drawer ---------- */
.drawer{background:rgba(9,13,28,.96);backdrop-filter:blur(16px);border-left:1px solid var(--line);color:var(--text);width:320px}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer .offcanvas-title{font-size:15px;font-weight:600;color:var(--text)}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.6}
.drawer .offcanvas-body{padding:18px 20px 28px}
.drawer-group{margin-bottom:22px}
.drawer-group h4{font-size:13px;color:var(--text-3);font-weight:400;letter-spacing:.06em;margin-bottom:10px}
.drawer-group a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:0 14px;border-radius:var(--r-input);font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-group a:hover{color:#fff;background:rgba(109,92,231,.2);border-color:rgba(142,123,255,.4)}
.drawer-group a.is-active{color:#fff;background:linear-gradient(135deg,rgba(109,92,231,.42),rgba(53,224,200,.24));border-color:rgba(142,123,255,.5)}
.drawer .btn-main{width:100%;justify-content:center}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-input);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.btn-main{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--sh-glow)}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,200,.55),0 10px 30px rgba(53,224,200,.3)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:var(--panel);border-color:var(--line-soft);backdrop-filter:blur(14px) saturate(120%)}
.btn-ghost:hover{color:#fff;transform:translateY(-2px);border-color:rgba(53,224,200,.55);box-shadow:0 8px 24px rgba(53,224,200,.16)}
.btn-ghost:active{transform:translateY(0)}
.btn-line{color:var(--text-2);background:transparent;border-color:var(--line)}
.btn-line:hover{color:var(--cyan);border-color:rgba(53,224,200,.5);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding:20px 0 0;position:relative;z-index:2}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:rgba(140,160,220,.4)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--cyan)}
.crumb .current{color:var(--text-3)}

/* ---------- layout blocks ---------- */
.page-main{position:relative;z-index:1}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--cyan);letter-spacing:.08em;margin-bottom:12px}
.section-head .eyebrow::before{content:"";width:18px;height:1px;background:var(--cyan);opacity:.7}
.section-head p{color:var(--text-2);margin-top:14px;font-size:16px;max-width:640px}

/* ---------- hero ---------- */
.page-hero{position:relative;padding:56px 0 72px;overflow:hidden}
.page-hero::after{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(180deg,rgba(6,8,15,.72),rgba(6,8,15,.94)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.9;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-copy h1 .accent{background:linear-gradient(135deg,var(--brand-2),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px}
.hero-stat b{display:block;font-size:26px;font-weight:700;color:#fff;line-height:1.2}
.hero-stat span{font-size:13px;color:var(--text-3)}
.hero-panel{
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2);
  padding:24px;
}
.hero-panel h3{font-size:16px;font-weight:600;color:var(--text-2);margin-bottom:16px}
.hero-panel .rowline{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line)}
.hero-panel .rowline:last-of-type{border-bottom:0}
.hero-panel .rowline span{font-size:14px;color:var(--text-2)}
.hero-panel .rowline b{font-size:14px;color:var(--text);font-weight:600}
.hero-panel .panel-note{font-size:12.5px;color:var(--text-3);margin-top:14px}

/* ---------- chip tabs (decorative in-page) ---------- */
.tabs-line{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.tabs-line a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  background:var(--panel);border:1px solid var(--line-soft);
  backdrop-filter:blur(10px);
  transition:all .18s var(--ease);
}
.tabs-line a:hover{color:#fff;border-color:rgba(53,224,200,.5);transform:translateY(-2px)}
.tabs-line a.is-on{color:#fff;background:linear-gradient(135deg,rgba(109,92,231,.55),rgba(53,224,200,.28));border-color:rgba(142,123,255,.6);box-shadow:0 6px 20px rgba(109,92,231,.3)}

/* ---------- brick masonry ---------- */
.brick-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.b-7{grid-column:span 7}
.b-5{grid-column:span 5}
.b-12{grid-column:span 12}
.brick{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-1);
  padding:26px;
  overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.brick:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.45);box-shadow:0 14px 38px rgba(3,6,18,.62)}
.brick h2,.brick h3{margin-bottom:14px}
.brick p{color:var(--text-2);font-size:15.5px}
.brick .brick-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--cyan);border:1px solid rgba(53,224,200,.35);background:rgba(53,224,200,.08);
  margin-bottom:14px;
}
.brick .brick-tag.gold{color:var(--gold);border-color:rgba(240,196,98,.4);background:rgba(240,196,98,.08)}
.brick-media{border-radius:var(--r-img);overflow:hidden;margin-bottom:20px;border:1px solid var(--line-soft)}
.brick-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.brick-big{background:linear-gradient(160deg,rgba(109,92,231,.22),rgba(18,24,48,.72) 55%),var(--panel-2)}
.brick-big::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(142,123,255,.34),transparent 70%);
  pointer-events:none;
}

/* ---------- key list ---------- */
.key-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.key-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.key-list li svg{flex:0 0 18px;width:18px;height:18px;margin-top:3px;stroke:var(--cyan);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.key-list li b{color:var(--text);font-weight:600}
.key-list.plain li svg{stroke:var(--text-3)}

/* ---------- level rows ---------- */
.level-rows{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.level-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 16px;border-radius:var(--r-input);background:rgba(11,16,36,.7);border:1px solid var(--line)}
.level-row .lv-name{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text)}
.level-row .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px rgba(142,123,255,.8)}
.level-row .lv-name.g2 .dot{background:var(--cyan);box-shadow:0 0 10px rgba(53,224,200,.8)}
.level-row .lv-name.g3 .dot{background:var(--gold);box-shadow:0 0 10px rgba(240,196,98,.8)}
.level-row .lv-name.g4 .dot{background:#E5636B;box-shadow:0 0 10px rgba(229,99,107,.7)}
.level-row .lv-price{font-size:14px;color:var(--text-2);white-space:nowrap}
.level-row.is-hot{border-color:rgba(240,196,98,.45);background:rgba(240,196,98,.06)}
.level-row.is-hot .lv-price{color:var(--gold);font-weight:600}

/* ---------- summary compare card ---------- */
.summary-card{
  grid-column:span 12;
  background:linear-gradient(135deg,rgba(109,92,231,.2),rgba(11,16,36,.85));
  border:1px solid rgba(142,123,255,.35);
  border-radius:var(--r-card);
  padding:28px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2);
}
.summary-card h3{margin-bottom:8px}
.summary-card > p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.summary-item{
  background:rgba(6,8,15,.55);
  border:1px solid var(--line);
  border-radius:var(--r-img);
  padding:18px;
}
.summary-item .si-label{font-size:13px;color:var(--text-3);margin-bottom:8px}
.summary-item .si-value{font-size:22px;font-weight:700;color:#fff;line-height:1.2;margin-bottom:6px}
.summary-item .si-value.gold{color:var(--gold)}
.summary-item .si-value.cyan{color:var(--cyan)}
.summary-item .si-desc{font-size:13px;color:var(--text-2);line-height:1.6}

/* ---------- use-case cards ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:24px;
  backdrop-filter:blur(12px) saturate(120%);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.case-card:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.45);box-shadow:0 14px 34px rgba(3,6,18,.6)}
.case-card .case-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(109,92,231,.22);border:1px solid rgba(142,123,255,.4);margin-bottom:18px;
}
.case-card .case-icon svg{width:22px;height:22px;stroke:var(--cyan);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.case-card h3{font-size:18px;margin-bottom:10px}
.case-card p{font-size:14.5px;color:var(--text-2);margin-bottom:16px}
.case-card .case-meta{font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px;display:flex;justify-content:space-between;gap:10px}
.case-card .case-meta b{color:var(--cyan);font-weight:600}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  backdrop-filter:blur(12px) saturate(120%);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.step:hover{border-color:rgba(53,224,200,.45);transform:translateY(-2px)}
.step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 6px 18px rgba(109,92,231,.4);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--text-2)}
.step::after{
  content:"";position:absolute;right:-14px;top:44px;width:14px;height:1px;
  background:linear-gradient(90deg,rgba(142,123,255,.6),transparent);
}
.step:last-child::after{display:none}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion-item{
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card)!important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(12px) saturate(120%);
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  padding:20px 24px;
  box-shadow:none!important;
  border:0;
}
.accordion-button:not(.collapsed){color:#fff;background:rgba(109,92,231,.16)}
.accordion-button::after{
  width:16px;height:16px;background-size:16px;
  filter:invert(1) sepia(1) saturate(4) hue-rotate(120deg);
  opacity:.75;
}
.accordion-button:hover{color:var(--cyan)}
.accordion-body{padding:4px 24px 22px;color:var(--text-2);font-size:15px;line-height:1.8}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(135deg,rgba(109,92,231,.26),rgba(53,224,200,.12)),var(--panel-2);
  border:1px solid rgba(142,123,255,.35);
  border-radius:var(--r-card);
  padding:44px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-120px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,200,.22),transparent 70%);pointer-events:none;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{position:relative;z-index:1;margin-top:24px;background:#070A14;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:320px;line-height:1.8}
.footer-col h4{font-size:14px;color:var(--text-3);font-weight:400;letter-spacing:.06em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14.5px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--cyan)}
.footer-bar{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}
.footer-bar a{color:var(--text-2)}
.footer-bar a:hover{color:var(--cyan)}

/* ---------- back to top ---------- */
#backTop{
  position:fixed;right:24px;bottom:28px;z-index:80;
  width:46px;height:46px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:var(--panel);border:1px solid var(--line-soft);
  backdrop-filter:blur(14px) saturate(120%);
  color:var(--text);cursor:pointer;
  box-shadow:var(--sh-2);
  transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
#backTop.show{display:inline-flex}
#backTop:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.55);color:var(--cyan)}
#backTop svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:32px}
  .summary-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  :root{--nav-h:58px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .chipbar{
    position:absolute;left:0;right:0;top:calc(100% + 8px);
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
    margin:0 24px;padding:4px;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
  }
  .chipbar::-webkit-scrollbar{display:none}
  .nav-row{position:relative}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .mainnav{border-bottom:1px solid var(--line)}
  .nav-row{padding-bottom:0}
  .catbar{margin-top:56px}
  .hero-grid{grid-template-columns:1fr}
  .page-hero{padding:40px 0 56px}
  .b-7,.b-5{grid-column:span 12}
  .case-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:767px){
  .container-x{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:44px 0}
  .brick-grid{gap:16px}
  .brick{padding:20px}
  .summary-grid{grid-template-columns:1fr}
  .summary-card{padding:22px}
  .hero-stats{gap:22px}
  .hero-stat b{font-size:22px}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bar{flex-direction:column;align-items:flex-start;gap:10px}
  .topline-text{font-size:12px}
  .cta-band{padding:26px}
  .accordion-button{font-size:15.5px;padding:18px 18px}
  .accordion-body{padding:2px 18px 20px}
}
@media (max-width:575px){
  .brand-text small{display:none}
  .hero-panel{padding:18px}
  .level-row{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#06080F;
  --bg-soft:#0B1024;
  --primary:#6D5CE7;
  --primary-2:#8E7BFF;
  --cyan:#35E0C8;
  --gold:#F0C462;
  --text:#E9EDFB;
  --muted:#A9B3D0;
  --dim:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-strong:rgba(140,160,220,.28);
  --glass:rgba(18,24,48,.62);
  --glass-2:rgba(18,24,48,.42);
  --r-card:18px;
  --r-cover:14px;
  --r-btn:12px;
  --r-input:12px;
  --shadow-1:0 4px 18px rgba(4,6,14,.45),0 0 0 1px rgba(140,160,220,.10);
  --shadow-2:0 12px 34px rgba(4,6,14,.58),0 0 0 1px rgba(53,224,200,.16);
  --shadow-glow:0 0 0 1px rgba(109,92,231,.5),0 8px 30px rgba(109,92,231,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-bg:#06080F;
  --bs-body-color:#E9EDFB;
  --bs-border-color:rgba(140,160,220,.16);
  --bs-link-color:#35E0C8;
  --bs-link-hover-color:#6FF0DC;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(900px 500px at 12% -8%,rgba(109,92,231,.16),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(53,224,200,.10),transparent 60%),
    radial-gradient(1200px 700px at 50% 110%,rgba(109,92,231,.10),transparent 65%),
    var(--bg);
  pointer-events:none;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#6FF0DC}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:0;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(109,92,231,.5);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B16}
::-webkit-scrollbar-thumb{background:rgba(109,92,231,.45);border-radius:999px;border:2px solid #080B16}
::-webkit-scrollbar-thumb:hover{background:rgba(53,224,200,.5)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{
  background:linear-gradient(180deg,rgba(11,16,36,0),rgba(11,16,36,.86) 18%,rgba(11,16,36,.86) 82%,rgba(11,16,36,0));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:clamp(26px,3vw,36px);line-height:1.25;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:16px;line-height:1.8}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(6,8,15,.76);border-bottom:1px solid transparent;transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease)}
.site-header.is-scrolled{background:rgba(6,8,15,.9);border-bottom-color:var(--line);backdrop-filter:blur(14px) saturate(120%)}
.topline{height:36px;display:flex;align-items:center;background:rgba(109,92,231,.08);border-bottom:1px solid var(--line)}
.topline .container-x{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topline-text{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topline-link{font-size:13px;color:var(--cyan);white-space:nowrap}
.mainnav{padding:0}
.nav-row{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{width:28px;height:28px;flex:0 0 28px;display:inline-block}
.brand-mark svg{width:100%;height:100%;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:0}
.brand-text small{font-size:12px;color:var(--dim);font-weight:400}
.chipbar{
  display:flex;align-items:center;gap:2px;
  padding:4px;border-radius:999px;
  background:var(--glass-2);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:13.5px;color:var(--muted);
  white-space:nowrap;transition:color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{color:var(--text);background:rgba(255,255,255,.06)}
.chip.is-active{
  color:#0B1024;
  font-weight:600;
  background:linear-gradient(135deg,var(--primary-2),var(--cyan));
  box-shadow:0 0 18px rgba(109,92,231,.45);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn-main,.btn-glass,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.btn-main{
  color:#fff;
  background:linear-gradient(135deg,var(--primary-2),var(--primary));
  box-shadow:var(--shadow-glow);
}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,200,.5),0 10px 32px rgba(109,92,231,.45),0 0 24px rgba(53,224,200,.35)}
.btn-main:active{transform:translateY(0)}
.btn-glass{
  color:var(--text);
  background:var(--glass-2);
  border-color:rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(120%);
}
.btn-glass:hover{color:var(--text);border-color:rgba(53,224,200,.6);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,200,.25)}
.btn-ghost{color:var(--muted);background:transparent;border-color:transparent;padding:10px 6px}
.btn-ghost:hover{color:var(--cyan)}
.btn-sm{padding:10px 18px;font-size:14px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--glass-2);border:1px solid rgba(255,255,255,.10);
  color:var(--text);cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(53,224,200,.5)}
.catbar{border-top:1px solid var(--line);background:rgba(8,11,22,.5)}
.catbar-inner{display:flex;align-items:center;gap:10px;min-height:46px;overflow-x:auto;scrollbar-width:none}
.catbar-inner::-webkit-scrollbar{display:none}
.catbar-label{font-size:12px;color:var(--dim);letter-spacing:.06em;white-space:nowrap;padding-right:6px;border-right:1px solid var(--line)}
.cat-link{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  font-size:13.5px;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.cat-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.cat-link.is-active{color:var(--cyan);border-color:rgba(53,224,200,.45);background:rgba(53,224,200,.08)}

/* ---------- drawer ---------- */
.drawer{background:rgba(11,16,36,.97);color:var(--text);border-left:1px solid var(--line);width:320px}
.drawer .offcanvas-header{border-bottom:1px solid var(--line)}
.drawer .offcanvas-title{font-size:15px;font-weight:700}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.8);opacity:.7}
.drawer-list{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-list a{display:block;padding:12px 14px;border-radius:var(--r-btn);color:var(--muted);font-size:15px;border:1px solid transparent}
.drawer-list a:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line)}
.drawer-list a.is-active{color:var(--cyan);border-color:rgba(53,224,200,.4);background:rgba(53,224,200,.08)}

/* ---------- breadcrumb ---------- */
.crumbs{padding:24px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--dim);opacity:.6}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--dim)}

/* ---------- hero ---------- */
.cat-hero{padding:44px 0 64px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--cyan);
  background:rgba(53,224,200,.08);
  border:1px solid rgba(53,224,200,.32);
  margin-bottom:22px;
}
.cat-hero h1{font-size:clamp(34px,4.4vw,52px);line-height:1.15;font-weight:700;margin-bottom:20px;max-width:14em}
.hero-sub{font-size:17px;color:var(--muted);line-height:1.85;max-width:34em;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats b{font-size:28px;font-weight:700;line-height:1.1;color:var(--text)}
.hero-stats span{font-size:13px;color:var(--dim)}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-2)}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;filter:saturate(1.05) brightness(.86)}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(6,8,15,.15),rgba(6,8,15,.72))}
.glass-float{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  padding:16px 18px;border-radius:var(--r-cover);
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(120%);
  display:flex;flex-direction:column;gap:8px;
}
.gf-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px}
.gf-row span{color:var(--dim)}
.gf-row b{color:var(--text);font-weight:600}

/* ---------- segbar ---------- */
.segbar{padding:0 0 8px}
.seg-inner{
  display:flex;align-items:center;gap:4px;
  padding:4px;border-radius:999px;
  background:var(--glass-2);
  border:1px solid rgba(255,255,255,.08);
  overflow-x:auto;scrollbar-width:none;
}
.seg-inner::-webkit-scrollbar{display:none}

/* ---------- rail ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  padding:4px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  cursor:grab;
}
.rail.is-dragging{cursor:grabbing;scroll-snap-type:none}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(109,92,231,.5);border:0;border-radius:999px}
.rail::-webkit-scrollbar-track{background:rgba(140,160,220,.08);border-radius:999px}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
  padding:16px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rail-card:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.5);box-shadow:var(--shadow-2)}
.rail-card img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-cover);margin-bottom:16px;filter:brightness(.92)}
.rail-card .rc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.rc-num{font-size:12px;color:var(--primary-2);letter-spacing:.08em}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;color:var(--muted);
  background:rgba(140,160,220,.10);
  border:1px solid var(--line);
}
.tag-cyan{color:var(--cyan);border-color:rgba(53,224,200,.35);background:rgba(53,224,200,.08)}
.rail-card h3{font-size:17px;line-height:1.45;margin-bottom:8px}
.rail-card p{font-size:14px;color:var(--muted);line-height:1.7}
.rail-fade{position:absolute;top:0;bottom:22px;width:48px;pointer-events:none;z-index:2}
.rail-fade-l{left:0;background:linear-gradient(90deg,var(--bg),rgba(6,8,15,0))}
.rail-fade-r{right:0;background:linear-gradient(270deg,var(--bg),rgba(6,8,15,0))}
.section-alt .rail-fade-l{background:linear-gradient(90deg,#0B1024,rgba(11,16,36,0))}
.section-alt .rail-fade-r{background:linear-gradient(270deg,#0B1024,rgba(11,16,36,0))}
.rail-hint{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-top:4px}
.rail-hint svg{width:16px;height:16px;flex:0 0 16px}

/* ---------- step cards ---------- */
.step-card{
  height:100%;
  background:var(--glass-2);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
  padding:26px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.step-card:hover{transform:translateY(-2px);border-color:rgba(53,224,200,.5);box-shadow:var(--shadow-2)}
.step-num{
  display:block;
  font-size:40px;font-weight:700;line-height:1;
  color:transparent;
  background:linear-gradient(135deg,var(--primary-2),var(--cyan));
  -webkit-background-clip:text;background-clip:text;
  margin-bottom:16px;
}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{font-size:15px;color:var(--muted);line-height:1.8}
.step-note{display:block;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--dim)}

/* ---------- figure block ---------- */
.figure-img{width:100%;border-radius:var(--r-card);border:1px solid rgba(255,255,255,.08);object-fit:cover;aspect-ratio:4/3;box-shadow:var(--shadow-1);filter:brightness(.92)}
.block-title{font-size:clamp(26px,3vw,36px);line-height:1.25;margin-bottom:16px}
.block-lead{font-size:16px;color:var(--muted);line-height:1.85;margin-bottom:24px;max-width:36em}
.tick-list{display:flex;flex-direction:column;gap:14px;margin-bottom:30px}
.tick-list li{display:flex;gap:12px;font-size:15px;color:var(--muted);line-height:1.75}
.tick-list svg{width:20px;height:20px;flex:0 0 20px;margin-top:3px;color:var(--cyan)}

/* ---------- check list ---------- */
.check-list{display:flex;flex-direction:column;gap:14px}
.check-list li{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--glass-2);
  border:1px solid rgba(255,255,255,.08);
  transition:border-color .2s var(--ease),transform .2s var(--ease)
}
.check-list li:hover{border-color:rgba(53,224,200,.45);transform:translateX(2px)}
.check-idx{
  flex:0 0 44px;font-size:15px;font-weight:700;color:var(--cyan);
  padding-top:2px;letter-spacing:.06em
}
.check-body{flex:1 1 auto;min-width:0}
.check-body h3{font-size:17px;margin-bottom:6px}
.check-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.check-list .tag{flex:0 0 auto;margin-top:4px}

/* ---------- FAQ ---------- */
.faq-x .accordion-item{
  background:var(--glass-2);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card)!important;
  margin-bottom:14px;
  overflow:hidden;
}
.faq-x .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16.5px;font-weight:600;
  padding:20px 24px;
  box-shadow:none;
}
.faq-x .accordion-button:not(.collapsed){color:var(--cyan);background:rgba(109,92,231,.08)}
.faq-x .accordion-button::after{
  width:16px;height:16px;background-size:16px;
  filter:invert(72%) sepia(28%) saturate(1400%) hue-rotate(122deg) brightness(95%);
}
.faq-x .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-x .accordion-button:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.faq-x .accordion-body{padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- CTA band ---------- */
.cta-band{
  border-radius:var(--r-card);
  padding:48px;
  background:linear-gradient(135deg,rgba(109,92,231,.20),rgba(53,224,200,.10)),var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(120%);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--muted);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{margin-top:0;padding:72px 0 32px;background:rgba(8,11,22,.72);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line)}
.footer-col h4{font-size:14px;margin-bottom:18px;color:var(--text);letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--cyan)}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:18px;max-width:30em}
.footer-brand .brand{margin-bottom:0}
.footer-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:26px;font-size:13px;color:var(--dim)}
.footer-bar a{color:var(--muted);font-size:13px}
.footer-bar a:hover{color:var(--cyan)}

/* ---------- float top ---------- */
#floatTop{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid rgba(255,255,255,.12);
  color:var(--text);cursor:pointer;
  backdrop-filter:blur(14px) saturate(120%);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
#floatTop.is-show{opacity:1;visibility:visible;transform:translateY(0)}
#floatTop:hover{border-color:rgba(53,224,200,.6);box-shadow:0 0 20px rgba(53,224,200,.28)}

/* ---------- reveal ---------- */
html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  html.js .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container-x{padding:0 22px}
}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .nav-row{flex-wrap:wrap;gap:16px;padding:12px 0}
  .chipbar{order:3;width:100%;overflow-x:auto;scrollbar-width:none}
  .chipbar::-webkit-scrollbar{display:none}
  .nav-toggle{display:inline-flex}
  .btn-ghost{display:none}
  .cat-hero{padding:32px 0 48px}
  .cat-hero h1{max-width:none}
  .hero-stats{gap:28px}
  .cta-band{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .container-x{padding:0 16px}
  .section{padding:48px 0}
  .topline-text{font-size:12px}
  .topline-link{display:none}
  .hero-stats{gap:20px}
  .hero-stats li{flex:1 1 40%}
  .hero-cta .btn-main,.hero-cta .btn-glass{flex:1 1 100%}
  .rail-card{flex:0 0 260px}
  .rail-fade{width:28px}
  .check-list li{flex-direction:column;gap:12px}
  .check-idx{flex:0 0 auto}
  .cta-band{padding:28px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-glass{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  #floatTop{right:16px;bottom:16px}
}
@media (max-width:575.98px){
  .brand-text small{display:none}
  .hero-stats{gap:16px}
  .step-card{padding:22px}
  .rail-card{flex:0 0 232px}
}

/* roulang page: category4 */
:root{
  --bg:#06080F;
  --bg-2:#0B1024;
  --panel:rgba(18,24,48,.62);
  --panel-solid:rgba(13,18,38,.92);
  --violet:#6D5CE7;
  --violet-2:#8E7BFF;
  --cyan:#35E0C8;
  --gold:#F0C462;
  --ok:#4BD08B;
  --warn:#F0A35E;
  --err:#E5636B;
  --text:#E9EDFB;
  --muted:#A9B3D0;
  --dim:#6D7796;
  --line:rgba(140,160,220,.16);
  --line-strong:rgba(140,160,220,.3);
  --r-card:18px;
  --r-inner:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.03), 0 8px 24px rgba(3,6,18,.5);
  --sh-2:0 1px 0 rgba(255,255,255,.06), 0 14px 38px rgba(3,6,18,.6);
  --sh-3:0 24px 60px rgba(3,6,18,.7);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:transparent;
  --bs-body-color:#E9EDFB;
  --bs-link-color:#A9B3D0;
  --bs-link-hover-color:#35E0C8;
  --bs-border-color:rgba(140,160,220,.16);
  --bs-gutter-x:24px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.005em;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 10% -12%, rgba(109,92,231,.18), transparent 70%),
    radial-gradient(760px 440px at 94% 4%, rgba(53,224,200,.10), transparent 72%),
    radial-gradient(680px 620px at 55% 118%, rgba(109,92,231,.12), transparent 70%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--cyan)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:0;color:var(--text)}
p{margin:0}
::selection{background:rgba(109,92,231,.42);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080B18}
::-webkit-scrollbar-thumb{background:rgba(109,92,231,.5);border-radius:999px;border:2px solid #080B18}
::-webkit-scrollbar-thumb:hover{background:rgba(142,123,255,.7)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:relative;z-index:1030}
.topline{
  background:linear-gradient(90deg, rgba(109,92,231,.18), rgba(53,224,200,.10));
  border-bottom:1px solid var(--line);
}
.topline .container-x{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topline-text{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topline-link{font-size:13px;color:var(--cyan);white-space:nowrap;border-bottom:1px solid rgba(53,224,200,.35);padding-bottom:1px}
.topline-link:hover{color:#7CF0DF}

.mainnav{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,8,15,.42);
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  border-bottom:1px solid transparent;
}
.mainnav.is-scrolled{
  background:rgba(6,8,15,.74);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(3,6,18,.55);
}
.nav-row{display:flex;align-items:center;gap:24px;height:68px}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;flex:0 0 28px;display:inline-flex}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15.5px;font-weight:700;color:var(--text);letter-spacing:0}
.brand-text small{font-size:12px;color:var(--dim);font-weight:400;margin-top:2px}
.brand:hover .brand-text b{color:var(--cyan)}

.chipbar{
  display:flex;align-items:center;gap:4px;padding:4px;
  border-radius:var(--r-pill);
  background:rgba(18,24,48,.62);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  max-width:100%;
}
.chipbar::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--muted);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.chip:hover{color:var(--text);background:rgba(140,160,220,.10)}
.chip.is-active{
  color:#0A0B16;font-weight:600;
  background:linear-gradient(135deg,var(--violet-2),var(--cyan));
  box-shadow:0 0 0 1px rgba(109,92,231,.5),0 6px 18px rgba(109,92,231,.32);
}
.chip.is-active:hover{color:#0A0B16}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-input);
  background:rgba(18,24,48,.7);border:1px solid var(--line);color:var(--text);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(53,224,200,.5);color:var(--cyan)}

.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-input);border:0;
  font-size:15px;font-weight:600;line-height:1.2;color:#0A0B16;
  background:linear-gradient(135deg,var(--violet-2),var(--cyan));
  box-shadow:0 0 0 1px rgba(109,92,231,.5), 0 8px 30px rgba(109,92,231,.35);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  cursor:pointer;text-align:center;
}
.btn-main:hover{
  color:#07080F;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(109,92,231,.6), 0 10px 34px rgba(109,92,231,.45), 0 0 24px rgba(53,224,200,.45);
}
.btn-main:active{transform:translateY(0)}
.btn-main.btn-sm{padding:9px 16px;font-size:14px}
.btn-main.btn-block{width:100%}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-input);
  font-size:14.5px;font-weight:500;color:var(--text);
  background:rgba(18,24,48,.62);border:1px solid rgba(255,255,255,.1);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-ghost:hover{
  color:var(--text);border-color:rgba(53,224,200,.55);transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(3,6,18,.5), 0 0 18px rgba(53,224,200,.22);
}
.btn-ghost.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-ghost.btn-block{width:100%}

.btn-plain{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--cyan);
  border-bottom:1px solid rgba(53,224,200,.35);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.btn-plain:hover{color:#7CF0DF;border-color:rgba(124,240,223,.7)}

/* ---------- catbar ---------- */
.catbar{border-top:1px solid var(--line);background:rgba(8,11,24,.5)}
.catbar-inner{
  display:flex;align-items:center;gap:10px;
  padding:9px 0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.catbar-inner::-webkit-scrollbar{display:none}
.catbar-label{font-size:12.5px;color:var(--dim);white-space:nowrap;padding-right:4px;border-right:1px solid var(--line);margin-right:2px}
.cat-link{
  display:inline-flex;align-items:center;
  padding:6px 15px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--muted);white-space:nowrap;
  background:rgba(18,24,48,.5);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.cat-link:hover{color:var(--text);border-color:rgba(53,224,200,.45)}
.cat-link.is-active{color:var(--cyan);border-color:rgba(53,224,200,.45);background:rgba(53,224,200,.08)}

/* ---------- drawer ---------- */
.nav-drawer{
  background:var(--panel-solid);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  backdrop-filter:blur(18px) saturate(120%);
  border-left:1px solid var(--line);color:var(--text);
  --bs-offcanvas-width:320px;
}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.nav-drawer .offcanvas-title{font-size:15px;color:var(--text)}
.nav-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.7}
.nav-drawer .offcanvas-body{padding:18px 20px 28px}
.drawer-label{font-size:12.5px;color:var(--dim);letter-spacing:.06em;margin:18px 0 10px}
.drawer-label:first-child{margin-top:0}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;margin-bottom:8px;border-radius:var(--r-input);
  font-size:14.5px;color:var(--text);
  background:rgba(18,24,48,.6);border:1px solid var(--line);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover{border-color:rgba(53,224,200,.5);color:var(--cyan)}
.drawer-link span{font-size:12px;color:var(--dim)}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding:26px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:rgba(140,160,220,.4)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--cyan)}
.crumb .current{color:var(--dim)}

/* ---------- hero ---------- */
.page-hero{padding:34px 0 20px}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero-copy{grid-column:span 7}
.hero-visual{grid-column:span 5}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--gold);
  background:rgba(240,196,98,.10);border:1px solid rgba(240,196,98,.3);
  margin-bottom:18px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 10px rgba(240,196,98,.8)}
h1.page-title{
  font-size:clamp(34px,4.4vw,52px);line-height:1.15;font-weight:700;
  margin-bottom:18px;
}
h1.page-title em{
  font-style:normal;
  background:linear-gradient(120deg,var(--violet-2),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-sub{font-size:16.5px;color:var(--muted);max-width:38em;margin-bottom:24px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.metric{
  flex:1 1 150px;padding:14px 16px;border-radius:var(--r-inner);
  background:rgba(18,24,48,.55);border:1px solid var(--line);
}
.metric b{display:block;font-size:20px;font-weight:700;color:var(--text);line-height:1.2}
.metric span{font-size:12.5px;color:var(--dim)}

.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:22px;border:1px solid var(--line-strong);
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;left:-14px;bottom:-18px;width:min(272px,88%);
  padding:16px 18px;
}
.glass{
  background:var(--panel);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.float-row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted)}
.float-row+.float-row{margin-top:8px;padding-top:8px;border-top:1px solid rgba(140,160,220,.14)}
.float-row b{color:var(--cyan);font-weight:600;font-size:13.5px}
.float-row b.gold{color:var(--gold)}

/* ---------- filter chips ---------- */
.filter-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.fchip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--muted);
  background:rgba(18,24,48,.5);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.fchip:hover{color:var(--text);border-color:rgba(53,224,200,.45)}
.fchip.is-active{color:var(--cyan);background:rgba(53,224,200,.1);border-color:rgba(53,224,200,.45)}

/* ---------- section ---------- */
.section{padding:88px 0}
.section.tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;color:var(--cyan);
  margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(26px,3vw,36px);line-height:1.25;margin-bottom:12px}
.section-head p{font-size:15.5px;color:var(--muted)}

/* ---------- feed ---------- */
.feed-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:start}
.feed-col{grid-column:span 8}
.side-col{grid-column:span 4}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}

.feed-list{display:flex;flex-direction:column;gap:14px}
.feed-item{
  display:grid;grid-template-columns:104px 1fr;gap:20px;
  padding:20px 24px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.feed-item:hover{
  border-color:rgba(53,224,200,.45);
  transform:translateY(-2px);
  box-shadow:var(--sh-2), 0 0 20px rgba(53,224,200,.16);
}
.feed-meta{display:flex;flex-direction:column;gap:6px}
.feed-no{
  font-size:12px;color:var(--dim);letter-spacing:.1em;
}
.feed-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.feed-body h3{font-size:17px;line-height:1.5;margin-bottom:8px;font-weight:600}
.feed-item:hover .feed-body h3{color:var(--cyan)}
.feed-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feed-foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--muted);
  background:rgba(140,160,220,.08);border:1px solid var(--line);
}
.tag.t-violet{color:#BFB4FF;border-color:rgba(142,123,255,.35);background:rgba(109,92,231,.12)}
.tag.t-cyan{color:#8DF0E2;border-color:rgba(53,224,200,.35);background:rgba(53,224,200,.1)}
.tag.t-gold{color:var(--gold);border-color:rgba(240,196,98,.32);background:rgba(240,196,98,.1)}
.feed-more{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:24px;padding:18px 24px;border-radius:var(--r-card);background:rgba(18,24,48,.4);border:1px dashed var(--line-strong)}
.feed-more span{font-size:14px;color:var(--dim)}

.side-card{padding:20px 22px}
.side-card h3{font-size:15.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 .bar{width:3px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--violet-2),var(--cyan))}
.side-links{display:flex;flex-direction:column;gap:6px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px;border-radius:var(--r-input);
  font-size:14px;color:var(--muted);background:rgba(10,14,30,.5);
  border:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.side-links a:hover{color:var(--cyan);border-color:rgba(53,224,200,.35);background:rgba(53,224,200,.06)}
.side-links a em{font-style:normal;font-size:12px;color:var(--dim)}
.side-links a:hover em{color:var(--cyan)}

.level-mini{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.level-mini-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 13px;border-radius:var(--r-input);
  background:rgba(10,14,30,.55);border:1px solid var(--line);
}
.level-mini-row .name{font-size:13.5px;color:var(--text)}
.level-mini-row .price{font-size:14px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums}
.level-mini-row .price.free{color:var(--cyan)}
.level-mini-row.is-hot{border-color:rgba(240,196,98,.4);box-shadow:0 0 0 1px rgba(240,196,98,.18), 0 0 18px rgba(240,196,98,.12)}

/* ---------- rhythm ---------- */
.rhythm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rhythm-card{padding:26px 24px;position:relative;overflow:hidden}
.rhythm-card::after{
  content:"";position:absolute;inset:auto -30px -40px auto;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle, rgba(109,92,231,.28), transparent 70%);pointer-events:none;
}
.rhythm-card .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  font-size:14px;font-weight:700;color:#0A0B16;
  background:linear-gradient(135deg,var(--violet-2),var(--cyan));
}
.rhythm-card h3{font-size:17px;margin-bottom:10px}
.rhythm-card p{font-size:14px;color:var(--muted)}
.rhythm-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.rhythm-card li{display:flex;gap:8px;font-size:13.5px;color:var(--muted)}
.rhythm-card li svg{flex:0 0 16px;margin-top:4px}

/* ---------- notify ---------- */
.notify{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
  padding:36px;border-radius:22px;
  background:linear-gradient(135deg, rgba(109,92,231,.16), rgba(53,224,200,.08));
  border:1px solid rgba(255,255,255,.1);
}
.notify h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:12px}
.notify p{font-size:15px;color:var(--muted);margin-bottom:18px}
.notify-list{display:flex;flex-direction:column;gap:10px}
.notify-list li{display:flex;gap:10px;font-size:14px;color:var(--muted)}
.notify-list svg{flex:0 0 16px;margin-top:4px}
.form-card{padding:24px;background:rgba(10,14,30,.6);border:1px solid var(--line);border-radius:var(--r-card)}
.field{display:block;margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field .help{display:block;font-size:12.5px;color:var(--dim);margin-top:6px}
.input,.select{
  width:100%;padding:12px 14px;
  font-size:15px;color:var(--text);font-family:inherit;
  background:rgba(6,8,15,.7);
  border:1px solid var(--line);border-radius:var(--r-input);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  appearance:none;
}
.select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
  padding-right:40px;
}
.input::placeholder{color:var(--dim)}
.input:focus,.select:focus{
  outline:none;border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,224,200,.18), 0 0 18px rgba(53,224,200,.16);
}
.select option{background:#0B1024;color:var(--text)}
.form-note{font-size:12.5px;color:var(--dim);margin-top:12px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:start}
.faq-intro{grid-column:span 4}
.faq-list{grid-column:span 8}
.faq-intro h2{font-size:clamp(26px,3vw,36px);line-height:1.25;margin-bottom:14px}
.faq-intro p{font-size:15px;color:var(--muted);margin-bottom:20px}
.accordion-item{
  background:var(--panel);border:1px solid var(--line) !important;border-radius:var(--r-card) !important;
  overflow:hidden;margin-bottom:12px;
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
}
.accordion-button{
  background:transparent !important;color:var(--text) !important;
  font-size:16px;font-weight:600;padding:18px 22px;box-shadow:none !important;
  transition:color .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--cyan) !important}
.accordion-button::after{
  background-image:none;width:14px;height:14px;flex:0 0 14px;
  border-right:1.8px solid currentColor;border-bottom:1.8px solid currentColor;
  transform:rotate(45deg);margin-top:-8px;
  transition:transform .24s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:0}
.accordion-button:hover{color:var(--cyan) !important}
.accordion-body{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:38px 40px;border-radius:22px;
  background:linear-gradient(120deg, rgba(109,92,231,.26), rgba(53,224,200,.12));
  border:1px solid rgba(255,255,255,.1);
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:clamp(24px,2.8vw,32px);line-height:1.3;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--muted);max-width:46em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;padding:64px 0 28px;
  background:linear-gradient(180deg, rgba(11,16,36,.6), rgba(6,8,15,.9));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--cyan)}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:var(--dim);max-width:34em;line-height:1.8}
.footer-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--dim);
}
.footer-bar a{font-size:13px;color:var(--muted)}
.footer-bar a:hover{color:var(--cyan)}

/* ---------- backtop ---------- */
#backTop{
  position:fixed;right:22px;bottom:26px;z-index:1050;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,24,48,.8);border:1px solid var(--line-strong);color:var(--text);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s,border-color .2s var(--ease);
}
#backTop.is-on{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{border-color:rgba(53,224,200,.6);color:var(--cyan)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-copy{grid-column:span 7}
  .hero-visual{grid-column:span 5}
  .feed-col{grid-column:span 7}
  .side-col{grid-column:span 5}
}
@media (max-width:991.98px){
  .nav-row{flex-wrap:wrap;height:auto;padding:10px 0;gap:12px}
  .brand{order:1}
  .nav-actions{order:2;margin-left:auto}
  .chipbar{
    order:3;width:100%;border-radius:var(--r-pill);
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 14px),transparent);
    mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 14px),transparent);
  }
  .nav-toggle{display:inline-flex}
  .btn-ghost{display:none}
  .nav-actions .btn-main{display:inline-flex}
  .hero-grid{gap:28px}
  .hero-copy{grid-column:span 12}
  .hero-visual{grid-column:span 12;margin-top:8px}
  .hero-float{left:14px;bottom:14px}
  .feed-col{grid-column:span 12}
  .side-col{grid-column:span 12}
  .side-sticky{position:static}
  .faq-intro{grid-column:span 12}
  .faq-list{grid-column:span 12}
  .notify{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .section.tight{padding:44px 0}
}
@media (max-width:767.98px){
  .container-x{padding:0 16px;--bs-gutter-x:16px}
  body{font-size:15.5px}
  .topline-text{font-size:12.5px}
  .hero-grid,.feed-layout,.faq-wrap{display:block}
  .hero-visual{margin-top:22px}
  .hero-float{position:static;width:100%;margin-top:16px;left:auto;bottom:auto}
  .rhythm-grid{grid-template-columns:1fr}
  .feed-item{grid-template-columns:1fr;gap:12px;padding:18px 18px}
  .feed-meta{flex-direction:row;align-items:center;gap:12px}
  h1.page-title{font-size:clamp(28px,8vw,36px)}
  .section{padding:48px 0}
  .section.tight{padding:36px 0}
  .cta-band{padding:26px 22px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bar{flex-direction:column;align-items:flex-start}
  #backTop{right:16px;bottom:18px;width:44px;height:44px}
}
@media (max-width:575.98px){
  .brand-text small{display:none}
  .hero-metrics{gap:10px}
  .metric{flex:1 1 100%}
  .notify{padding:22px}
  .feed-more{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}