/* roulang page: index */
:root{
  --ink-950:#08090E;
  --ink-900:#0D0F16;
  --ink-850:#12141D;
  --ink-800:#171A26;
  --ink-700:#222636;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand-600:#5433E0;
  --brand-500:#6C4BFF;
  --brand-400:#8A6BFF;
  --accent-500:#1FE0A8;
  --accent-400:#45F0BE;
  --hot-500:#FFB020;
  --t1:#F3F5FA;
  --t2:#A6AEC0;
  --t3:#6C7488;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-rest:0 0 0 1px var(--line),0 18px 40px -22px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(108,75,255,.45),0 22px 56px -20px rgba(108,75,255,.5);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-950);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--accent-400);text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:var(--brand-400)}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px;border-radius:6px}
::selection{background:rgba(108,75,255,.5);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
.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}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease),filter 220ms var(--ease);
}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,var(--brand-500),var(--brand-600));
  box-shadow:0 0 0 1px rgba(138,107,255,.35),0 14px 30px -14px rgba(108,75,255,.9);
}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(138,107,255,.6),0 18px 40px -14px rgba(108,75,255,1)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{color:var(--t1);background:rgba(255,255,255,.02);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--t1);background:rgba(255,255,255,.07);border-color:rgba(138,107,255,.55);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-hot{background:var(--hot-500);color:#1B1305;font-weight:700;box-shadow:0 10px 26px -14px rgba(255,176,32,.9)}
.btn-hot:hover{color:#1B1305;filter:brightness(1.07);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--accent-400);font-weight:600;font-size:14px;padding:4px 0}
.btn-text i{transition:transform 220ms var(--ease)}
.btn-text:hover{color:var(--brand-400)}
.btn-text:hover i{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.6;font-weight:600}
.pill-brand{color:var(--accent-400);background:rgba(31,224,168,.12);border:1px solid rgba(31,224,168,.22)}
.pill-hot{color:#1B1305;background:var(--hot-500)}
.pill-muted{color:var(--t2);background:rgba(255,255,255,.06);border:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;font-size:12px;color:var(--t2);background:rgba(255,255,255,.05);border:1px solid var(--line);white-space:nowrap}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(8,9,14,.28);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px -12px rgba(0,0,0,.6);
  transition:background 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{background:rgba(8,9,14,.94);border-bottom-color:var(--line-strong);box-shadow:0 14px 44px -18px rgba(0,0,0,.9)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;height:64px;transition:height 220ms var(--ease)}
@media (min-width:1024px){.nav-wrap{height:76px}}
.site-header.is-scrolled .nav-wrap{height:60px}
@media (min-width:1024px){.site-header.is-scrolled .nav-wrap{height:64px}}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:800;font-size:15px;letter-spacing:-.01em;min-width:0}
.brand:hover{color:var(--t1)}
.brand-mark{position:relative;flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand-500),var(--accent-500));box-shadow:0 0 18px rgba(108,75,255,.55)}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:rgba(8,9,14,.88);transform:rotate(45deg)}
.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (min-width:768px){.brand{font-size:16px}}
.nav-links{display:none}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:4px}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 13px;border-radius:9px;font-size:15px;font-weight:500;color:var(--t2);transition:color 220ms var(--ease),background 220ms var(--ease)}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t1);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:-2px;height:2px;border-radius:2px;background:var(--accent-400)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-search{display:none;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--t3)}
@media (min-width:1280px){.nav-search{display:flex}}
.nav-search input{width:104px;border:0;background:transparent;outline:none;font-size:14px;color:var(--t1)}
.nav-search input::placeholder{color:var(--t3)}
.nav-actions .btn-sm{display:none}
@media (min-width:640px){.nav-actions .btn-sm{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:11px;border:1px solid var(--line-strong);color:var(--t1);font-size:17px;transition:background 220ms var(--ease),border-color 220ms var(--ease)}
.nav-toggle:hover{background:rgba(255,255,255,.07);border-color:rgba(138,107,255,.5)}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-menu{
  position:fixed;left:0;right:0;top:64px;z-index:55;
  background:var(--ink-900);border-bottom:1px solid var(--line-strong);
  padding:14px 20px 22px;
  display:flex;flex-direction:column;gap:6px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease);
}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-menu a{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;font-size:16px;color:var(--t1);border-bottom:1px solid var(--line)}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu a i{color:var(--t3);font-size:13px}
.mobile-menu .btn{margin-top:12px}
@media (min-width:1024px){.mobile-menu{display:none}}

/* ---------- Hero ---------- */
.hero{position:relative;padding:118px 0 68px;overflow:hidden;background:var(--ink-950)}
@media (min-width:1024px){.hero{padding:172px 0 100px}}
.hero-bg{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% 6%,rgba(108,75,255,.20),transparent 66%),
    radial-gradient(560px 400px at 90% 84%,rgba(31,224,168,.15),transparent 66%);
}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.75;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15) 70%,transparent);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15) 70%,transparent);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:42px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.04fr .96fr;gap:56px}}
.hero-copy h1{font-size:clamp(2rem,5.4vw,3.3rem);line-height:1.16;letter-spacing:-.02em;font-weight:800;margin:18px 0 14px;max-width:19ch}
.hero-sub{color:var(--t2);font-size:16px;line-height:1.7;max-width:34ch}
@media (min-width:1024px){.hero-sub{font-size:17px}}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:26px}
.hero-trust li{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--t2)}
.hero-trust i{color:var(--accent-400);font-size:12px}
.hero-visual{position:relative}
.hero-visual>img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:0 0 0 1px var(--line),0 34px 74px -32px rgba(0,0,0,.95);background:linear-gradient(150deg,rgba(108,75,255,.3),rgba(31,224,168,.12))}
.hero-ring{position:absolute;top:-26px;left:-26px;width:132px;height:132px;border-radius:50%;border:1px solid rgba(138,107,255,.28);pointer-events:none}
.hero-ring::after{content:"";position:absolute;inset:22px;border-radius:50%;border:1px solid rgba(31,224,168,.22)}
.float-card{position:absolute;right:4px;bottom:-20px;display:flex;align-items:center;gap:12px;max-width:236px;padding:11px;border-radius:14px;background:rgba(18,20,29,.93);border:1px solid var(--line-strong);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 22px 48px -22px rgba(0,0,0,.95)}
.float-card img{flex:0 0 52px;width:52px;height:68px;object-fit:cover;border-radius:10px;background:linear-gradient(160deg,rgba(108,75,255,.35),rgba(31,224,168,.15))}
.float-meta{display:flex;flex-direction:column;gap:2px;min-width:0}
.float-meta strong{font-size:14px;font-weight:700;color:var(--t1);letter-spacing:.02em}
.float-meta span{font-size:12px;color:var(--t3)}
@media (max-width:520px){.float-card{right:0;bottom:-14px;max-width:200px}.hero-ring{display:none}}
.hero-divider{position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(108,75,255,.4),rgba(31,224,168,.35),transparent)}

/* ---------- 板块 ---------- */
.section{position:relative;padding:62px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section--alt{background:var(--ink-900)}
.section--deep{background:var(--ink-850)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
@media (min-width:1024px){.section-head{margin-bottom:38px}}
.section-title{position:relative;padding-left:16px;font-size:clamp(1.45rem,2.7vw,2.05rem);line-height:1.26;letter-spacing:-.01em}
.section-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:linear-gradient(var(--brand-500),var(--accent-500))}
.section-desc{padding-left:16px;margin-top:10px;max-width:660px;font-size:15px;line-height:1.75;color:var(--t2)}

/* ---------- 筛选 pill 行 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filter-row a{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:500;color:var(--t2);background:rgba(255,255,255,.04);border:1px solid var(--line);transition:all 220ms var(--ease)}
.filter-row a:hover{color:var(--t1);border-color:rgba(138,107,255,.5);background:rgba(108,75,255,.12);transform:translateY(-2px)}
.filter-row a.is-on{color:#fff;border-color:transparent;background:linear-gradient(120deg,var(--brand-500),var(--brand-600));box-shadow:0 12px 28px -14px rgba(108,75,255,.9)}

/* ---------- 游戏卡片 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (min-width:768px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
@media (min-width:1024px){.grid-cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}}
.game-card{display:flex;flex-direction:column;gap:12px;padding:13px;border-radius:var(--r-card);background:var(--ink-800);border:1px solid var(--line);box-shadow:0 18px 40px -24px rgba(0,0,0,.9);transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease)}
.game-card:hover{transform:translateY(-4px);border-color:rgba(108,75,255,.45);box-shadow:var(--shadow-hover)}
.game-thumb{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:3/4;background:linear-gradient(160deg,rgba(108,75,255,.28),rgba(31,224,168,.12))}
.game-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.game-card:hover .game-thumb img{transform:scale(1.05)}
.game-thumb .badge-hot{position:absolute;top:9px;left:9px}
.game-title{font-size:16px;font-weight:600;line-height:1.42;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.84em}
.game-tags{display:flex;flex-wrap:wrap;gap:6px}
.game-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto}
.rate{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--hot-500)}
.rate span{color:var(--t3);font-weight:500}
.game-card .btn-hot{height:34px;padding:0 12px;font-size:13px;border-radius:9px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}}
.news-card{display:flex;flex-direction:column;gap:12px;padding:20px;border-radius:var(--r-card);background:var(--ink-800);border:1px solid var(--line);box-shadow:var(--shadow-rest);transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:rgba(108,75,255,.45);box-shadow:var(--shadow-hover)}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px;color:var(--t3)}
.news-title{font-size:17px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-title{color:var(--brand-400)}
.news-sum{font-size:14px;line-height:1.7;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--accent-400)}
.news-card:hover .news-more i{transform:translateX(3px)}
.news-more i{transition:transform 220ms var(--ease)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:180px;padding:28px;border-radius:var(--r-card);border:1px dashed var(--line-strong);background:rgba(255,255,255,.02);text-align:center}
.empty-state i{font-size:26px;color:var(--t3)}
.empty-state p{font-size:14px;color:var(--t2)}

/* ---------- 评价 ---------- */
.review-panel{background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 0}
@media (min-width:1024px){.review-panel{padding:34px 0}}
.review-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 20px 14px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
@media (min-width:1024px){.review-track{padding:4px 32px 14px}}
.review-card{flex:0 0 82%;max-width:330px;scroll-snap-align:start;display:flex;flex-direction:column;gap:12px;padding:18px;border-radius:var(--r-card);background:var(--ink-800);border:1px solid var(--line)}
@media (min-width:768px){.review-card{flex:0 0 44%}}
@media (min-width:1024px){.review-card{flex:0 0 31%}}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;flex:0 0 44px;border-radius:12px;display:grid;place-items:center;font-weight:700;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--brand-500),var(--accent-500))}
.review-name{font-size:15px;font-weight:600}
.review-src{font-size:12px;color:var(--t3)}
.review-text{font-size:14px;line-height:1.75;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.review-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 20px;margin-top:6px}
@media (min-width:1024px){.review-nav{padding:0 32px}}
.review-nav .hint{font-size:13px;color:var(--t3)}
.review-arrows{display:flex;gap:8px}
.review-arrows button{width:44px;height:44px;border-radius:11px;border:1px solid var(--line-strong);color:var(--t1);display:grid;place-items:center;transition:background 220ms var(--ease),border-color 220ms var(--ease)}
.review-arrows button:hover{background:rgba(108,75,255,.16);border-color:rgba(138,107,255,.55)}

/* ---------- 保障条 ---------- */
.guarantee{background:linear-gradient(120deg,var(--brand-500),var(--accent-500));color:#0A0C12}
.guarantee-inner{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 14px;padding:26px 0}
@media (min-width:768px){.guarantee-inner{grid-template-columns:repeat(4,minmax(0,1fr));padding:30px 0}}
.guard-item{display:flex;align-items:center;gap:11px;font-size:14px;font-weight:700;letter-spacing:.01em}
.guard-item i{font-size:17px}
@media (min-width:768px){.guard-item{justify-content:center}}

/* ---------- CTA 大区块 ---------- */
.cta-panel{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--ink-900);padding:44px 24px;text-align:center}
@media (min-width:1024px){.cta-panel{padding:66px 40px}}
.cta-panel::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(520px 300px at 50% 0%,rgba(108,75,255,.22),transparent 70%)}
.cta-panel h2{position:relative;font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.3}
.cta-panel p{position:relative;margin-top:12px;color:var(--t2);font-size:15px}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}
.cta-points{position:relative;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:22px}
.cta-points li{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--t2)}
.cta-points i{color:var(--accent-400);font-size:12px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:26px}
@media (min-width:1024px){.faq-layout{grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:48px;align-items:start}}
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:800px}
.faq-item{border-radius:12px;background:var(--ink-850);border:1px solid var(--line);overflow:hidden;transition:border-color 220ms var(--ease)}
.faq-item[open]{border-color:rgba(108,75,255,.4)}
.faq-item summary{position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px 16px 21px;font-size:16px;font-weight:600;color:var(--t1);cursor:pointer;list-style:none;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;background:transparent;transition:background 220ms var(--ease)}
.faq-item[open] summary::before{background:var(--brand-500)}
.faq-item summary i{flex:0 0 auto;color:var(--t3);font-size:13px;transition:transform 220ms var(--ease)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--accent-400)}
.faq-answer{padding:0 18px 18px 21px;font-size:15px;line-height:1.8;color:var(--t2);max-width:800px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line);padding:52px 0 0}
@media (min-width:1024px){.site-footer{padding:68px 0 0}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:var(--t1)}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:var(--t2);max-width:360px}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--t2);transition:color 220ms var(--ease),transform 220ms var(--ease)}
.footer-links a:hover{color:var(--accent-400);transform:translateX(-2px)}
.footer-bottom{margin-top:44px;padding:20px 0 28px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3)}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--accent-400)}

/* ---------- 滚动出现 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink-950:#08090E; --ink-900:#0D0F16; --ink-850:#12141D; --ink-800:#171A26; --ink-700:#222636;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --brand-600:#5433E0; --brand-500:#6C4BFF; --brand-400:#8A6BFF;
  --accent-500:#1FE0A8; --accent-400:#45F0BE; --hot-500:#FFB020;
  --t1:#F3F5FA; --t2:#A6AEC0; --t3:#6C7488;
  --danger:#FF5C6C;
  --r-card:16px; --r-panel:20px; --r-img:12px; --r-btn:10px;
  --shadow-card:0 0 0 1px var(--line), 0 18px 40px -22px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(108,75,255,.45), 0 22px 56px -20px rgba(108,75,255,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--ink-950);color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.4;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--accent-400);text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--brand-400);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media(min-width:768px){.container{padding:0 24px;}}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;height:var(--nav-h);
  background:rgba(8,9,14,.28);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px -12px rgba(0,0,0,.6);
  transition:background 260ms var(--ease),height 260ms var(--ease),border-color 260ms var(--ease),box-shadow 260ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,9,14,.94);height:64px;
  border-bottom-color:var(--line-strong);
  box-shadow:0 12px 44px -18px rgba(0,0,0,.95);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:28px;height:28px;flex:0 0 auto;border-radius:9px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent-500));
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 8px 22px -8px rgba(108,75,255,.9);
  transform:rotate(45deg);
}
.brand-text{font-size:16.5px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 12px;border-radius:9px;
  color:var(--t2);font-size:15px;font-weight:500;white-space:nowrap;
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--t1);position:relative;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent-500),var(--brand-500));
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-search{
  display:none;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:10px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--t3);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search:focus-within{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(31,224,168,.14);}
.nav-search input{width:130px;background:none;border:0;outline:none;font-size:14px;color:var(--t1);}
.nav-search input::placeholder{color:var(--t3);}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--t1);border-radius:2px;transition:transform 220ms var(--ease),opacity 220ms var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:95;
  background:var(--ink-900);border-left:1px solid var(--line-strong);
  padding:88px 20px 24px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform 300ms var(--ease);
  box-shadow:-24px 0 60px -20px rgba(0,0,0,.9);
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a.drawer-link{
  display:flex;align-items:center;min-height:52px;padding:0 14px;border-radius:12px;
  color:var(--t2);font-size:16px;font-weight:500;border:1px solid transparent;
}
.nav-drawer a.drawer-link:hover{background:var(--ink-800);color:var(--t1);border-color:var(--line);}
.nav-drawer .drawer-cta{margin-top:auto;width:100%;justify-content:center;}
.drawer-mask{position:fixed;inset:0;z-index:94;background:rgba(4,5,9,.7);opacity:0;visibility:hidden;transition:opacity 260ms var(--ease),visibility 260ms var(--ease);}
.drawer-mask.is-open{opacity:1;visibility:visible;}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .nav-search{display:inline-flex;}
  .nav-toggle{display:none;}
  .nav-drawer,.drawer-mask{display:none;}
}
@media(max-width:767px){
  .brand-text{font-size:15px;}
  .btn-sm.hide-sm{display:none;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;color:var(--t1);
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand-500),var(--brand-600));
  box-shadow:0 0 0 1px rgba(255,255,255,.10),0 14px 34px -16px rgba(108,75,255,.95);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,255,255,.16),0 20px 44px -16px rgba(108,75,255,1);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--t1);}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:var(--brand-500);color:var(--t1);transform:translateY(-2px);}
.btn-hot{background:var(--hot-500);color:#1A1206;font-weight:700;}
.btn-hot:hover{background:#FFC24D;color:#1A1206;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 15px;font-size:14.5px;border-radius:9px;}
.btn-block{width:100%;}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent-400);font-weight:600;font-size:15px;}
.btn-link i{transition:transform 200ms var(--ease);}
.btn-link:hover{color:var(--brand-400);}
.btn-link:hover i{transform:translateX(3px);}

/* ============ 标签 / 徽章 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  color:var(--accent-400);background:rgba(31,224,168,.12);border:1px solid rgba(31,224,168,.22);
}
.pill-brand{color:#CFC2FF;background:rgba(108,75,255,.16);border-color:rgba(108,75,255,.34);}
.pill-hot{color:#FFD68A;background:rgba(255,176,32,.16);border-color:rgba(255,176,32,.3);}
.rating{display:inline-flex;align-items:center;gap:4px;color:var(--hot-500);font-size:13px;font-weight:700;}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;padding:calc(var(--nav-h) + 44px) 0 44px;
  background:
    linear-gradient(180deg,rgba(8,9,14,.86) 0%,rgba(13,15,22,.94) 62%,var(--ink-950) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-head::after{
  content:"";position:absolute;left:-140px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,75,255,.22),transparent 68%);pointer-events:none;
}
.article-head .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--accent-400);}
.breadcrumb .sep{color:var(--accent-500);}
.breadcrumb .current{color:var(--t1);max-width:min(100%,520px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  margin:16px 0 18px;max-width:900px;
  font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.24;font-weight:800;letter-spacing:-.02em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--t3);display:inline-block;}
.meta-row strong{color:var(--t2);font-weight:600;}

/* ============ 封面 ============ */
.article-cover-wrap{padding:34px 0 0;}
.cover-figure{
  position:relative;margin:0;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);aspect-ratio:21/9;background:linear-gradient(135deg,rgba(108,75,255,.28),rgba(31,224,168,.16));
  box-shadow:var(--shadow-card);
}
.cover-figure img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease);}
.cover-figure:hover img{transform:scale(1.02);}
@media(max-width:640px){.cover-figure{aspect-ratio:16/10;}}

/* ============ 主体布局 ============ */
.article-main{padding:44px 0 80px;}
.article-shell{display:grid;grid-template-columns:1fr;gap:36px;}
@media(min-width:1024px){.article-shell{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:44px;}}
.article-panel{
  background:var(--ink-900);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:26px 22px;box-shadow:var(--shadow-card);
}
@media(min-width:768px){.article-panel{padding:38px 40px;}}
.article-body{max-width:780px;font-size:16.5px;line-height:1.9;color:var(--t2);word-wrap:break-word;overflow-wrap:break-word;}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body strong,.article-body b{color:var(--t1);font-weight:700;}
.article-body em{color:var(--accent-400);font-style:normal;}
.article-body h2{
  position:relative;margin:2.1em 0 .8em;padding-left:15px;
  font-size:clamp(1.24rem,2vw,1.5rem);line-height:1.35;font-weight:700;color:var(--t1);scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:1em;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--accent-500));
}
.article-body h3{margin:1.7em 0 .6em;font-size:1.08rem;font-weight:700;color:var(--accent-400);line-height:1.5;scroll-margin-top:96px;}
.article-body h4{margin:1.4em 0 .5em;font-size:1rem;color:var(--t1);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:6px 0;line-height:1.75;}
.article-body ul li::marker{color:var(--brand-400);}
.article-body ol li::marker{color:var(--accent-500);font-weight:700;}
.article-body blockquote{
  margin:1.5em 0;padding:14px 18px;border-left:4px solid var(--accent-500);
  background:var(--ink-850);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--t1);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line);margin:1.4em auto;height:auto;}
.article-body a{color:var(--accent-400);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-400);}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;}
.article-body th{background:var(--ink-700);color:var(--t1);font-weight:700;text-align:left;}
.article-body th,.article-body td{padding:10px 13px;border:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025);}
.article-body code{background:var(--ink-950);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:.9em;color:var(--accent-400);}
.article-body pre{background:var(--ink-950);border:1px solid var(--line);border-radius:var(--r-img);padding:16px;overflow-x:auto;margin:1.5em 0;}
.article-body pre code{border:0;background:none;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{margin-top:8px;text-align:center;font-size:13px;color:var(--t3);}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;text-align:center;padding:32px 20px;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--ink-850);
}
.empty-state i{font-size:30px;color:var(--brand-400);}
.empty-state p{font-size:14.5px;color:var(--t2);}

/* ============ 标签区 ============ */
.tag-block{margin-top:34px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-block .tag-title{font-size:13px;color:var(--t3);margin-right:4px;}
.tag{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:500;color:var(--t2);background:var(--ink-800);border:1px solid var(--line);transition:all 220ms var(--ease);}
.tag:hover{color:var(--t1);border-color:var(--brand-500);transform:translateY(-2px);}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;}
@media(min-width:1024px){.article-side{position:sticky;top:92px;align-self:start;}}
.side-card{background:var(--ink-900);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card);}
.side-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--t1);margin-bottom:14px;}
.side-title::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent-500);box-shadow:0 0 10px rgba(31,224,168,.8);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto;}
.toc-list a{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--t2);border-left:2px solid transparent;line-height:1.55;}
.toc-list a:hover{background:var(--ink-800);color:var(--t1);border-left-color:var(--brand-500);}
.toc-list a.is-sub{padding-left:22px;font-size:13.5px;color:var(--t3);}
.toc-hint{font-size:13px;color:var(--t3);line-height:1.7;}
.hot-list{display:flex;flex-direction:column;gap:10px;}
.hot-item{display:flex;gap:11px;align-items:flex-start;padding:9px 8px;border-radius:10px;transition:background 200ms var(--ease);}
.hot-item:hover{background:var(--ink-800);}
.hot-rank{flex:0 0 auto;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font-size:12px;font-weight:800;color:#CFC2FF;background:rgba(108,75,255,.18);border:1px solid rgba(108,75,255,.3);}
.hot-item:nth-child(-n+3) .hot-rank{color:#FFD68A;background:rgba(255,176,32,.16);border-color:rgba(255,176,32,.3);}
.hot-item h4{font-size:14.5px;font-weight:600;line-height:1.5;color:var(--t1);margin-bottom:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.hot-item span{font-size:12px;color:var(--t3);}
.side-cta{
  background:linear-gradient(150deg,rgba(108,75,255,.22),rgba(31,224,168,.10)),var(--ink-850);
  border:1px solid rgba(108,75,255,.34);border-radius:var(--r-card);padding:22px;
}
.side-cta h3{font-size:17px;font-weight:700;color:var(--t1);margin-bottom:8px;}
.side-cta p{font-size:14px;color:var(--t2);line-height:1.75;margin-bottom:16px;}

/* ============ 上下篇 / 继续浏览 ============ */
.nav-pair{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px;}
@media(min-width:768px){.nav-pair{grid-template-columns:1fr 1fr;}}
.nav-card{
  display:flex;align-items:center;gap:14px;padding:18px;border-radius:var(--r-card);
  background:var(--ink-850);border:1px dashed var(--line-strong);transition:all 240ms var(--ease);
}
.nav-card:hover{border-color:rgba(108,75,255,.5);transform:translateY(-2px);background:var(--ink-800);}
.nav-card .nav-ic{flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(108,75,255,.14);border:1px solid rgba(108,75,255,.3);color:var(--brand-400);font-size:16px;}
.nav-card .nav-txt{min-width:0;}
.nav-card .nav-label{font-size:12px;color:var(--t3);margin-bottom:3px;}
.nav-card .nav-name{font-size:15px;font-weight:600;color:var(--t1);line-height:1.5;}

/* ============ 相关推荐 ============ */
.rel-section{padding:0 0 76px;}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rel-card{
  display:flex;flex-direction:column;background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,75,255,.45);}
.rel-thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,rgba(108,75,255,.35),rgba(31,224,168,.18));overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 520ms var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{padding:16px;display:flex;flex-direction:column;gap:8px;}
.rel-body h3{font-size:16.5px;font-weight:600;line-height:1.45;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body p{font-size:13.5px;color:var(--t2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-foot{display:flex;align-items:center;justify-content:space-between;padding:0 16px 16px;font-size:12.5px;color:var(--t3);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.section-head h2{position:relative;padding-left:15px;font-size:clamp(1.25rem,2.4vw,1.75rem);line-height:1.3;}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:linear-gradient(180deg,var(--brand-500),var(--accent-500));}
.section-head p{font-size:14px;color:var(--t3);margin-top:8px;}

/* 返回条 */
.back-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;
  padding:30px 22px;border-radius:var(--r-panel);text-align:center;
  background:linear-gradient(140deg,rgba(108,75,255,.20),rgba(31,224,168,.08)),var(--ink-900);
  border:1px solid var(--line-strong);
}
.back-cta .back-txt{width:100%;margin-bottom:6px;}
.back-cta h3{font-size:clamp(1.1rem,2vw,1.4rem);}
.back-cta p{font-size:14px;color:var(--t2);margin-top:8px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line);padding:56px 0 26px;position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:44px;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--t1);margin-bottom:14px;}
.footer-brand .brand-mark{width:24px;height:24px;border-radius:8px;}
.footer-about{font-size:14px;color:var(--t2);line-height:1.8;max-width:420px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--t2);transition:color 200ms var(--ease),transform 200ms var(--ease);}
.footer-links a:hover{color:var(--accent-400);transform:translateX(2px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);
}
@media(max-width:520px){
  .btn{height:44px;padding:0 18px;font-size:15px;}
  .article-head{padding-top:calc(var(--nav-h) + 30px);}
  .article-panel{padding:20px 16px;}
}

/* roulang page: category1 */
:root{
  --ink-950:#08090E;--ink-900:#0D0F16;--ink-850:#12141D;--ink-800:#171A26;--ink-700:#222636;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --brand-600:#5433E0;--brand-500:#6C4BFF;--brand-400:#8A6BFF;
  --accent-500:#1FE0A8;--accent-400:#45F0BE;--hot-500:#FFB020;
  --t1:#F3F5FA;--t2:#A6AEC0;--t3:#6C7488;
  --r-card:16px;--r-panel:20px;--r-img:12px;--r-btn:10px;
  --shadow-card:0 0 0 1px var(--line),0 18px 40px -22px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(108,75,255,.45),0 22px 56px -20px rgba(108,75,255,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --grad-brand:linear-gradient(120deg,var(--brand-500),var(--brand-600));
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink-950);color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:var(--accent-400)}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t1)}
p{margin:0}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(8,9,14,.28);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px -12px rgba(0,0,0,.6);
  transition:background 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,9,14,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 14px 44px -18px rgba(0,0,0,.9);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
@media(min-width:1024px){.header-inner{height:76px}}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:-.01em;white-space:nowrap;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:24px;height:24px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-400),var(--accent-500));
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 8px 20px -8px rgba(108,75,255,.9);
  transform:rotate(45deg);
}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:18px}
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--t2);
  transition:color 220ms var(--ease),background 220ms var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t1);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  border-radius:2px;background:var(--accent-400);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{
  display:none;align-items:center;gap:8px;height:38px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.search-box:focus-within{border-color:var(--accent-400);box-shadow:0 0 0 3px rgba(69,240,190,.14)}
.search-box i{color:var(--t3);font-size:13px}
.search-box input{width:160px;background:transparent;border:0;outline:none;font-size:14px}
.search-box input::placeholder{color:var(--t3)}
@media(min-width:1024px){.search-box{display:flex}}
.header-cta{display:none}
@media(min-width:1024px){.header-cta{display:inline-flex}}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);color:var(--t1);
  transition:background 220ms var(--ease),border-color 220ms var(--ease);
}
.menu-toggle:hover{background:rgba(255,255,255,.09);border-color:var(--brand-400)}
@media(min-width:1024px){.menu-toggle{display:none}}
.mobile-menu{
  position:fixed;top:64px;left:0;right:0;bottom:0;z-index:55;
  display:flex;flex-direction:column;gap:6px;padding:16px 20px 32px;
  background:var(--ink-900);border-top:1px solid var(--line);overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease);
}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-menu .m-link{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:12px;
  font-size:16px;font-weight:500;color:var(--t2);border:1px solid transparent;
}
.mobile-menu .m-link:hover,.mobile-menu .m-link.is-active{
  background:var(--ink-800);color:var(--t1);border-color:var(--line);
}
.mobile-cta{margin-top:16px;display:flex;flex-direction:column;gap:10px}
@media(min-width:1024px){.mobile-menu{display:none}}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),filter 220ms var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 30px -16px rgba(108,75,255,.95),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{color:#fff;filter:brightness(1.08);box-shadow:0 18px 44px -16px rgba(108,75,255,1)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t1)}
.btn-ghost:hover{border-color:var(--brand-400);background:rgba(255,255,255,.06);color:var(--t1)}
.btn-hot{background:var(--hot-500);color:#20160A;font-weight:700;box-shadow:0 12px 30px -18px rgba(255,176,32,.9)}
.btn-hot:hover{color:#20160A;filter:brightness(1.06)}
.btn-sm{height:38px;min-height:38px;padding:0 16px;font-size:14px}
.link-btn{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-400)}
.link-btn i{transition:transform 220ms var(--ease)}
.link-btn:hover i{transform:translateX(3px)}

/* ============ 通用板块 ============ */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-alt{background:var(--ink-900);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.h2{display:flex;align-items:center;gap:12px;font-size:clamp(1.45rem,2.3vw,2rem);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--brand-500);flex:0 0 auto}
.h3{font-size:18px;font-weight:600;line-height:1.4}
.lead{color:var(--t2);font-size:15px;line-height:1.8;max-width:780px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--accent-400);background:rgba(31,224,168,.10);border:1px solid rgba(31,224,168,.24);
}
.pill{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;
  color:var(--accent-400);background:rgba(31,224,168,.12);border:1px solid rgba(31,224,168,.22)}
.pill-hot{color:var(--hot-500);background:rgba(255,176,32,.14);border-color:rgba(255,176,32,.28)}
.rating{font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--hot-500)}
.meta{font-size:12px;color:var(--t3)}

/* ============ Banner ============ */
.cat-banner{
  position:relative;overflow:hidden;
  padding:118px 0 64px;
  background-color:var(--ink-950);
  background-image:linear-gradient(105deg,rgba(8,9,14,.95) 0%,rgba(20,16,48,.86) 46%,rgba(84,51,224,.52) 100%),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 82% 18%,rgba(69,240,190,.16),transparent 46%),
                   radial-gradient(circle at 12% 88%,rgba(108,75,255,.20),transparent 50%);
}
.cat-banner .container{position:relative;z-index:2}
@media(min-width:1024px){.cat-banner{padding:150px 0 84px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:22px}
.crumbs a{color:var(--t2)}
.crumbs a:hover{color:var(--accent-400)}
.crumbs .sep{color:var(--accent-500)}
.banner-title{
  font-size:clamp(2.1rem,4vw,3.3rem);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin:18px 0 16px;max-width:820px;
}
.banner-lead{color:var(--t2);font-size:16px;line-height:1.85;max-width:660px}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:36px;max-width:820px}
@media(min-width:768px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{
  padding:14px 16px;border-radius:14px;border:1px solid var(--line);
  background:rgba(13,15,22,.62);backdrop-filter:blur(8px);
}
.stat b{display:block;font-size:22px;font-weight:800;letter-spacing:.02em}
.stat span{font-size:12px;color:var(--t3)}

/* ============ 标签行 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag-chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--t2);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
  transition:color 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
}
.tag-chip:hover{color:var(--t1);border-color:var(--brand-400);background:rgba(108,75,255,.12)}
.tag-chip.is-on{color:var(--t1);border-color:rgba(69,240,190,.5);background:rgba(31,224,168,.12)}

/* ============ 游戏卡片 ============ */
.card-grid{display:grid;gap:22px;grid-template-columns:minmax(0,1fr)}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.game-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.game-card:hover{transform:translateY(-4px);border-color:rgba(108,75,255,.45);box-shadow:var(--shadow-hover)}
.game-card__cover{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,rgba(108,75,255,.35),rgba(31,224,168,.28));overflow:hidden}
.game-card__cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.game-card__badge{
  position:absolute;top:10px;left:10px;padding:3px 10px;border-radius:999px;
  font-size:11px;font-weight:700;color:#20160A;background:var(--hot-500);
}
.game-card__badge.cool{color:#062018;background:var(--accent-400)}
.game-card__body{display:flex;flex-direction:column;flex:1;padding:16px 18px 18px}
.game-card__title{font-size:18px;font-weight:600;line-height:1.4;margin-bottom:8px}
.game-card__desc{font-size:14px;color:var(--t2);line-height:1.7;margin-bottom:14px}
.game-card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.game-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.game-card__stats{display:flex;flex-direction:column;gap:2px}

/* ============ 排行卡 ============ */
.rank-grid{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
@media(min-width:768px){.rank-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rank-card{
  display:flex;gap:16px;align-items:flex-start;padding:18px;
  background:linear-gradient(150deg,rgba(23,26,38,.96),rgba(13,15,22,.96));
  border:1px solid var(--line);border-radius:var(--r-panel);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.rank-card:hover{transform:translateY(-4px);border-color:rgba(108,75,255,.45);box-shadow:var(--shadow-hover)}
.rank-num{font-size:26px;font-weight:800;line-height:1;letter-spacing:.02em;color:transparent;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text}
.rank-thumb{width:64px;height:64px;flex:0 0 auto;border-radius:12px;overflow:hidden;background:rgba(108,75,255,.25)}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-body{min-width:0}
.rank-body h3{font-size:16px;font-weight:600;margin-bottom:6px}
.rank-body p{font-size:13px;color:var(--t2);line-height:1.7;margin-bottom:10px}
.rank-body .rating{margin-right:10px}

/* ============ 场景 / 流程 / 评价 ============ */
.tri-grid{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
@media(min-width:768px){.tri-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.soft-card{
  padding:22px;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.soft-card:hover{transform:translateY(-4px);border-color:rgba(31,224,168,.4);box-shadow:0 22px 56px -24px rgba(31,224,168,.35)}
.soft-card h3{font-size:17px;font-weight:600;margin:14px 0 10px}
.soft-card p{font-size:14px;color:var(--t2);line-height:1.8}
.icon-box{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;
  font-size:17px;color:var(--accent-400);background:rgba(31,224,168,.12);border:1px solid rgba(31,224,168,.24);
}
.steps{display:grid;gap:20px;grid-template-columns:minmax(0,1fr);counter-reset:step}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step{
  position:relative;padding:22px 20px;border-radius:var(--r-card);
  background:var(--ink-850);border:1px solid var(--line);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand-400);margin-bottom:10px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--t2);line-height:1.75}
.review-card{
  padding:22px;border-radius:var(--r-card);background:var(--ink-850);border:1px solid var(--line);
  display:flex;flex-direction:column;gap:12px;
}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;
  font-size:15px;font-weight:700;color:#0A1A16;background:linear-gradient(135deg,var(--accent-400),var(--accent-500));
}
.review-card p{font-size:14px;color:var(--t2);line-height:1.8}
.review-name{font-size:14px;font-weight:600}
.stars{font-size:12px;color:var(--hot-500);letter-spacing:.08em}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:28px;grid-template-columns:minmax(0,1fr)}
@media(min-width:1024px){.faq-wrap{grid-template-columns:.85fr 1.4fr;gap:48px}}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--ink-850);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color 220ms var(--ease)}
.faq-item.is-open{border-color:rgba(108,75,255,.5)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--t1);min-height:52px;
}
.faq-q i{color:var(--t3);font-size:13px;transition:transform 220ms var(--ease),color 220ms var(--ease)}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--accent-400)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a p{padding:0 18px 18px;font-size:15px;line-height:1.8;color:var(--t2);max-width:820px}
.faq-item.is-open{padding-left:0;border-left:3px solid transparent}
.faq-item{border-left:3px solid transparent}
.faq-item.is-open{border-left-color:var(--brand-500)}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--line-strong);padding:40px 24px;text-align:center;
  background-color:var(--ink-900);
  background-image:radial-gradient(circle at 50% 0%,rgba(108,75,255,.30),transparent 62%),
                   linear-gradient(180deg,rgba(18,20,29,.9),rgba(8,9,14,.96));
}
@media(min-width:768px){.cta-panel{padding:56px 48px}}
.cta-panel h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.25;margin-bottom:14px}
.cta-panel p{color:var(--t2);font-size:15px;line-height:1.8;max-width:620px;margin:0 auto}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:24px;font-size:13px;color:var(--t3)}
.trust-row span{display:inline-flex;align-items:center;gap:6px}
.trust-row i{color:var(--accent-400);font-size:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:64px}
.footer-grid{display:grid;gap:32px;grid-template-columns:minmax(0,1fr)}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:14px}
.footer-about{font-size:14px;color:var(--t2);line-height:1.85;max-width:420px}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--t1)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2);transition:color 220ms var(--ease),transform 220ms var(--ease);display:inline-block}
.footer-links a:hover{color:var(--accent-400);transform:translateX(-2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
@media(max-width:520px){
  .banner-title{font-size:1.85rem}
  .btn{width:100%}
  .banner-actions .btn,.cta-actions .btn{width:100%}
  .game-card__foot{flex-direction:column;align-items:flex-start}
  .game-card__foot .btn-sm{width:100%}
}

/* roulang page: category2 */
:root{
  --ink-950:#08090E;
  --ink-900:#0D0F16;
  --ink-850:#12141D;
  --ink-800:#171A26;
  --ink-700:#222636;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand-600:#5433E0;
  --brand-500:#6C4BFF;
  --brand-400:#8A6BFF;
  --accent-500:#1FE0A8;
  --accent-400:#45F0BE;
  --hot-500:#FFB020;
  --t1:#F3F5FA;
  --t2:#A6AEC0;
  --t3:#6C7488;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-idle:0 0 0 1px var(--line), 0 18px 40px -22px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(108,75,255,.45), 0 22px 56px -20px rgba(108,75,255,.5);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-950);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding:0;list-style:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--accent-400);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(8,9,14,.28);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px -12px rgba(0,0,0,.6);
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,9,14,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 14px 44px -16px rgba(0,0,0,.9);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;transition:height var(--ease)}
@media(min-width:1024px){.header-inner{height:76px}}
.site-header.is-scrolled .header-inner{height:60px}
@media(min-width:1024px){.site-header.is-scrolled .header-inner{height:64px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:20px;height:20px;border-radius:6px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent-500));
  transform:rotate(45deg);
  box-shadow:0 0 0 1px rgba(255,255,255,.16),0 6px 18px -6px rgba(108,75,255,.9);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;
  padding:8px 13px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--t2);
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t1)}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent-400);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.header-actions{margin-left:0}}
.search-box{display:none}
@media(min-width:1024px){
  .search-box{display:block}
  .search-box input{
    width:190px;height:40px;padding:0 14px;
    background:var(--ink-700);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    font-size:14px;color:var(--t1);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .search-box input::placeholder{color:var(--t3)}
  .search-box input:focus{
    border-color:var(--accent-500);
    box-shadow:0 0 0 3px rgba(31,224,168,.16);
    outline:none;
  }
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand-500),var(--brand-600));
  color:var(--t1);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 10px 30px -14px rgba(108,75,255,.95);
}
.btn-primary:hover{filter:brightness(1.1);box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 16px 40px -14px rgba(108,75,255,1)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--brand-400);background:rgba(255,255,255,.06)}
.btn-hot{
  background:var(--hot-500);color:#161207;font-weight:700;
}
.btn-hot:hover{filter:brightness(1.06)}
.btn-hot:active{transform:scale(.98)}
.header-cta{display:none}
@media(min-width:640px){.header-cta{display:inline-flex}}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  cursor:pointer;
}
@media(min-width:1024px){.menu-toggle{display:none}}
.menu-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);position:relative;
}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t1);
  transition:transform var(--ease);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.menu-toggle.is-open span{background:transparent}
.menu-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.menu-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{
  display:none;
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:12px 0 24px;
}
.mobile-panel.is-open{display:block}
@media(min-width:1024px){.mobile-panel.is-open{display:none}}
.mobile-panel .nav-link{
  display:block;padding:14px 20px;border-radius:10px;font-size:16px;line-height:1.4;
}
.mobile-panel .nav-link.is-active{background:rgba(31,224,168,.1);color:var(--accent-400)}
.mobile-panel .nav-link.is-active::after{display:none}
.mobile-cta{margin:16px 20px 0}

/* ---------- 页面头部 ---------- */
.page-head{
  position:relative;
  padding:126px 0 52px;
  background-color:var(--ink-950);
  background-image:
    radial-gradient(760px 420px at 12% 0%,rgba(108,75,255,.24),transparent 62%),
    radial-gradient(620px 380px at 92% 22%,rgba(31,224,168,.16),transparent 60%),
    linear-gradient(180deg,rgba(8,9,14,.82),rgba(8,9,14,.96)),
    url('/assets/images/backpic/back-1.webp');
  background-size:auto,auto,auto,cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
@media(min-width:1024px){.page-head{padding:164px 0 68px}}
.page-head::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(108,75,255,.7),transparent);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px}
.crumb a{color:var(--t2);transition:color var(--ease)}
.crumb a:hover{color:var(--accent-400)}
.crumb .sep{color:var(--accent-500)}
.crumb .current{color:var(--t2)}
.page-head h1{
  font-size:clamp(2rem,3.4vw,3rem);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  max-width:840px;
}
.page-lead{
  margin-top:18px;max-width:720px;
  font-size:16px;line-height:1.85;color:var(--t2);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--accent-400);
  background:rgba(31,224,168,.12);
  border:1px solid rgba(31,224,168,.22);
}
.pill-warm{color:var(--hot-500);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.26)}
.pill-plain{color:var(--t2);background:rgba(255,255,255,.05);border-color:var(--line-strong)}
.stats-bar{
  margin-top:34px;
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
  padding:20px;
  background:rgba(18,20,29,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  backdrop-filter:blur(8px);
}
@media(min-width:768px){.stats-bar{grid-template-columns:repeat(4,1fr);gap:20px;padding:24px 28px}}
.stat-item{border-left:2px solid rgba(108,75,255,.5);padding-left:14px}
.stat-num{font-size:26px;font-weight:800;letter-spacing:.02em;line-height:1.2}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--accent-400);margin-left:2px}
.stat-label{margin-top:4px;font-size:13px;color:var(--t3)}

/* ---------- 主体两栏 ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:48px 0}
@media(min-width:1024px){.section-tight{padding:64px 0}}
.content-layout{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:1024px){
  .content-layout{grid-template-columns:268px minmax(0,1fr);gap:52px;align-items:start}
}
.sidebar{
  position:sticky;top:96px;
  padding:22px 20px;
  background:var(--ink-900);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  box-shadow:var(--shadow-idle);
}
.sidebar h2{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--t3);text-transform:uppercase}
.toc{margin-top:16px;display:flex;flex-direction:column;gap:4px}
.toc-link{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  transition:background var(--ease),color var(--ease),padding var(--ease);
}
.toc-link i{
  font-style:normal;font-size:12px;font-weight:700;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.toc-link:hover{background:rgba(255,255,255,.06);color:var(--t1);padding-left:14px}
.toc-link:hover i{color:var(--accent-400)}
.sidebar-tip{
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.7;color:var(--t3);
}
.sidebar-tip strong{display:block;color:var(--t2);font-size:14px;margin-bottom:6px}

/* ---------- 分组与横向卡片 ---------- */
.group{margin-bottom:52px}
.group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:22px}
.group-index{
  flex-shrink:0;
  min-width:44px;height:44px;padding:0 10px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  font-size:15px;font-weight:800;letter-spacing:.02em;
  color:var(--accent-400);
  background:rgba(31,224,168,.1);
  border:1px solid rgba(31,224,168,.22);
}
.group-title-wrap h2{
  font-size:22px;font-weight:700;line-height:1.3;
}
@media(min-width:768px){.group-title-wrap h2{font-size:26px}}
.group-title-wrap p{margin-top:6px;font-size:14px;color:var(--t3);line-height:1.7}
.group-title-wrap h2::before{
  content:"";display:inline-block;width:4px;height:18px;border-radius:2px;
  background:var(--brand-500);margin-right:10px;vertical-align:-2px;
}
.row-list{display:flex;flex-direction:column;gap:14px}
.row-card{
  display:grid;grid-template-columns:1fr;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-idle);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
@media(min-width:640px){.row-card{grid-template-columns:196px minmax(0,1fr)}}
.row-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,75,255,.4)}
.row-card-media{
  position:relative;
  background:linear-gradient(140deg,rgba(108,75,255,.35),rgba(31,224,168,.18));
  min-height:150px;
}
.row-card-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
@media(min-width:640px){.row-card-media img{aspect-ratio:auto;height:100%;min-height:150px}}
.row-card-body{padding:18px 20px;display:flex;flex-direction:column;gap:10px}
.row-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.row-card-title{font-size:17px;font-weight:600;line-height:1.45}
@media(min-width:768px){.row-card-title{font-size:18px}}
.step-no{
  flex-shrink:0;font-size:12px;font-weight:800;letter-spacing:.04em;
  color:var(--brand-400);
  padding:2px 8px;border-radius:999px;
  background:rgba(108,75,255,.14);
  border:1px solid rgba(108,75,255,.3);
}
.row-card-desc{font-size:14.5px;line-height:1.8;color:var(--t2)}
.row-card-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:2px}
.meta{font-size:12px;color:var(--t3);letter-spacing:.02em}
.meta-sep{color:var(--line-strong)}

/* ---------- 流程四步 ---------- */
.flow-band{
  background:var(--ink-900);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.flow-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media(min-width:640px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr);gap:20px}}
.flow-card{
  position:relative;
  padding:22px 20px;
  background:var(--ink-850);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,75,255,.4)}
.flow-num{
  font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--hot-500);
}
.flow-card h3{margin-top:10px;font-size:16px;font-weight:600;line-height:1.45}
.flow-card p{margin-top:8px;font-size:13.5px;line-height:1.75;color:var(--t2)}

/* ---------- 保障条 ---------- */
.guard-band{
  background:linear-gradient(120deg,var(--brand-500),var(--accent-500));
  color:#07090D;
  padding:26px 0;
}
.guard-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(min-width:1024px){.guard-grid{grid-template-columns:repeat(4,1fr)}}
.guard-item{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700}
.guard-dot{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;
  background:rgba(7,9,13,.85);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--accent-400);font-size:12px;font-weight:800;
}

/* ---------- 通栏说明面板 ---------- */
.note-panel{
  display:grid;grid-template-columns:1fr;gap:0;
  background:var(--ink-850);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  overflow:hidden;
  box-shadow:var(--shadow-idle);
}
@media(min-width:1024px){.note-panel{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}}
.note-media{position:relative;min-height:220px;background:linear-gradient(140deg,rgba(108,75,255,.35),rgba(31,224,168,.16))}
.note-media img{width:100%;height:100%;object-fit:cover;min-height:220px}
.note-body{padding:28px 24px}
@media(min-width:1024px){.note-body{padding:40px 38px}}
.note-body h2{font-size:23px;font-weight:700;line-height:1.35}
.note-body h2::before{content:"";display:inline-block;width:4px;height:18px;border-radius:2px;background:var(--accent-500);margin-right:10px;vertical-align:-2px}
.note-body p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--t2)}
.note-points{margin-top:20px;display:grid;gap:10px}
.note-points li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--t2)}
.note-points li span{
  flex-shrink:0;width:20px;height:20px;border-radius:6px;
  background:rgba(108,75,255,.18);border:1px solid rgba(108,75,255,.34);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:800;color:var(--brand-400);
}

/* ---------- FAQ ---------- */
.faq-list{margin-top:28px;display:flex;flex-direction:column;gap:10px;max-width:880px}
.faq-item{
  background:var(--ink-850);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:rgba(108,75,255,.42);background:var(--ink-800)}
.faq-item summary{
  position:relative;
  list-style:none;cursor:pointer;
  padding:16px 52px 16px 20px;
  font-size:16px;font-weight:600;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;background:var(--brand-500);
}
.faq-icon{
  position:absolute;right:20px;top:50%;
  width:12px;height:12px;margin-top:-6px;
  border-right:2px solid var(--t2);border-bottom:2px solid var(--t2);
  transform:rotate(45deg);
  transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(-135deg);border-color:var(--accent-400)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--t2);max-width:800px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  padding:56px 0;
  background-color:var(--ink-900);
  background-image:radial-gradient(640px 320px at 50% 0%,rgba(108,75,255,.28),transparent 66%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band h2{font-size:26px;font-weight:800;line-height:1.3;letter-spacing:-.01em}
@media(min-width:768px){.cta-band h2{font-size:32px}}
.cta-band p{margin:14px auto 0;max-width:620px;font-size:15.5px;line-height:1.85;color:var(--t2)}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-mini{margin-top:20px;display:flex;flex-wrap:wrap;gap:18px;justify-content:center;font-size:13px;color:var(--t3)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--ink-950);
  border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em}
.footer-about{margin-top:14px;max-width:420px;font-size:14px;line-height:1.8;color:var(--t2)}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--t1)}
.footer-links{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:var(--t2);
  transition:color var(--ease),transform var(--ease);
  width:fit-content;
}
.footer-links a:hover{color:var(--accent-400);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --ink-950:#08090E;
  --ink-900:#0D0F16;
  --ink-850:#12141D;
  --ink-800:#171A26;
  --ink-700:#222636;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand-600:#5433E0;
  --brand-500:#6C4BFF;
  --brand-400:#8A6BFF;
  --accent-500:#1FE0A8;
  --accent-400:#45F0BE;
  --hot-500:#FFB020;
  --t1:#F3F5FA;
  --t2:#A6AEC0;
  --t3:#6C7488;
  --danger:#FF5C6C;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 0 0 1px var(--line), 0 18px 40px -22px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(108,75,255,.45), 0 22px 56px -20px rgba(108,75,255,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background-color:var(--ink-950);
  background-image:
    radial-gradient(720px 420px at 12% -5%, rgba(108,75,255,.16), transparent 62%),
    radial-gradient(600px 380px at 92% 8%, rgba(31,224,168,.10), transparent 60%),
    radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:auto,auto,22px 22px;
  background-attachment:fixed,fixed,fixed;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--accent-400);text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--brand-400);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(8,9,14,.28);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px -12px rgba(0,0,0,.6);
  transition:background 260ms var(--ease),box-shadow 260ms var(--ease),border-color 260ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,9,14,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 14px 40px -16px rgba(0,0,0,.85);
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent-500));
  box-shadow:0 0 0 1px rgba(255,255,255,.18),0 8px 22px -10px rgba(108,75,255,.9);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;
  background:var(--ink-950);transform:rotate(45deg);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--t2);border-radius:8px;
  transition:color 200ms var(--ease),background 200ms var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--t1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent-500);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.nav-search:focus-within{border-color:var(--accent-500);background:rgba(31,224,168,.06);}
.nav-search svg{width:15px;height:15px;stroke:var(--t3);fill:none;stroke-width:1.8;}
.nav-search input{
  width:130px;border:0;background:transparent;color:var(--t1);font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--t3);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-panel{
  display:none;background:var(--ink-900);border-top:1px solid var(--line);
  padding:12px 20px 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;height:52px;padding:0 4px;color:var(--t2);
  font-size:16px;font-weight:500;border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--accent-400);}
.mobile-panel .btn{width:100%;height:48px;justify-content:center;margin-top:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,var(--brand-500),var(--brand-600));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 12px 28px -16px rgba(108,75,255,.95);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 18px 40px -14px rgba(108,75,255,1);
}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  color:var(--t1);border:1px solid var(--line-strong);background:transparent;
}
.btn-ghost:hover{color:var(--t1);border-color:var(--brand-400);background:rgba(255,255,255,.06);transform:translateY(-2px);}
.btn-hot{
  color:#12141D;background:var(--hot-500);font-weight:700;
  box-shadow:0 12px 26px -16px rgba(255,176,32,.9);
}
.btn-hot:hover{color:#12141D;transform:translateY(-2px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-400);
}
.link-arrow span{transition:transform 220ms var(--ease);}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- 通用 ---------- */
main{padding-top:64px;}
.section{padding:64px 0;}
.section-sm{padding:48px 0;}
.section-title{
  display:flex;align-items:center;gap:12px;
  font-size:26px;font-weight:700;line-height:1.25;color:var(--t1);
}
.section-title::before{
  content:"";width:4px;height:20px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-400),var(--accent-500));
}
.section-lead{margin-top:10px;color:var(--t2);font-size:15px;max-width:760px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--accent-400);background:rgba(31,224,168,.12);
  border:1px solid rgba(31,224,168,.22);
}
.pill-hot{color:var(--hot-500);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.26);}
.pill-brand{color:var(--brand-400);background:rgba(108,75,255,.14);border-color:rgba(108,75,255,.3);}

/* ---------- 顶部信息区 ---------- */
.intro{padding:44px 0 8px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--accent-400);}
.breadcrumb .sep{color:var(--accent-500);}
.breadcrumb .current{color:var(--t1);}
.intro h1{
  margin-top:18px;
  font-size:clamp(2rem,3.6vw,3rem);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  max-width:880px;
}
.intro-lead{margin-top:16px;max-width:820px;color:var(--t2);font-size:16px;line-height:1.85;}
.stat-bar{
  margin-top:32px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
}
.stat-cell{background:var(--ink-850);padding:20px 22px;}
.stat-num{font-size:26px;font-weight:800;letter-spacing:.02em;color:var(--t1);font-family:"Inter",system-ui,sans-serif;}
.stat-num em{font-style:normal;font-size:15px;color:var(--accent-400);margin-left:4px;}
.stat-label{margin-top:4px;font-size:13px;color:var(--t3);}

/* ---------- 分组卡片 ---------- */
.group-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;justify-content:space-between;}
.group-head h2{
  display:flex;align-items:center;gap:12px;
  font-size:24px;font-weight:700;color:var(--t1);
}
.group-head h2::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--accent-500);
  box-shadow:0 0 0 4px rgba(31,224,168,.14);
}
.group-head p{color:var(--t2);font-size:14px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:22px;}
.sec-card{
  display:flex;gap:16px;padding:18px;
  background:var(--ink-800);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.sec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.sec-thumb{
  flex:0 0 96px;width:96px;height:96px;border-radius:12px;overflow:hidden;
  background:linear-gradient(135deg,rgba(108,75,255,.35),rgba(31,224,168,.22));
  border:1px solid var(--line);
}
.sec-thumb img{width:100%;height:100%;object-fit:cover;}
.sec-body{min-width:0;flex:1 1 auto;display:flex;flex-direction:column;gap:8px;}
.sec-body h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--t1);}
.sec-body p{font-size:14px;line-height:1.7;color:var(--t2);}
.sec-body .link-arrow{margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:24px;display:flex;flex-direction:column;gap:10px;}
.faq-item{
  background:var(--ink-850);border:1px solid var(--line);border-radius:12px;overflow:hidden;
  transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.is-open{border-color:rgba(108,75,255,.4);background:var(--ink-800);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:16px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--t1);
}
.faq-q .chev{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  border:1px solid var(--line-strong);position:relative;
  transition:transform 240ms var(--ease),border-color 240ms var(--ease);
}
.faq-q .chev::before{
  content:"";position:absolute;left:6px;top:5px;width:6px;height:6px;
  border-right:1.6px solid var(--t2);border-bottom:1.6px solid var(--t2);
  transform:rotate(45deg);
}
.faq-item.is-open .chev{transform:rotate(180deg);border-color:var(--accent-500);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.faq-a-inner{
  padding:0 20px 18px 20px;font-size:15px;line-height:1.85;color:var(--t2);max-width:820px;
  border-left:3px solid var(--accent-500);margin-left:20px;padding-left:16px;
}
.faq-item.is-open .faq-a{max-height:340px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  padding:52px 40px;text-align:center;
  background-image:linear-gradient(rgba(8,9,14,.78),rgba(8,9,14,.9)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(460px 260px at 50% 0%, rgba(108,75,255,.35), transparent 70%);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:28px;font-weight:800;letter-spacing:-.01em;}
.cta-band p{margin-top:12px;color:var(--t2);font-size:15px;max-width:640px;margin-left:auto;margin-right:auto;}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-points{margin-top:24px;display:flex;flex-wrap:wrap;gap:22px;justify-content:center;font-size:13px;color:var(--t3);}
.cta-points span{display:inline-flex;align-items:center;gap:7px;}
.cta-points span::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;background:var(--ink-950);border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--t1);}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:var(--t2);max-width:420px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--t1);letter-spacing:.02em;}
.footer-links{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--t2);transition:color 200ms var(--ease),transform 200ms var(--ease);}
.footer-links a:hover{color:var(--accent-400);transform:translateX(-2px);}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .menu-toggle{display:flex;}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .header-inner{height:60px;}
  .brand-text{font-size:15px;}
  main{padding-top:60px;}
  .section{padding:52px 0;}
  .intro{padding:32px 0 4px;}
  .intro h1{font-size:clamp(1.75rem,7vw,2.2rem);}
  .card-grid{grid-template-columns:1fr;}
  .sec-thumb{flex:0 0 80px;width:80px;height:80px;}
  .cta-band{padding:40px 22px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .stat-cell{padding:16px 14px;}
  .stat-num{font-size:22px;}
  .sec-card{flex-direction:row;padding:14px;gap:12px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .header-actions .btn-sm{width:auto;}
}