/* ============================================================
   秀人网 www.xiurennet.cloud — 主题官网样式
   设计：暗夜画廊 · 胶片质感 · 衬线标题
   ============================================================ */
:root{
  --bg:#0a0a0b;
  --bg-1:#101012;
  --bg-2:#16161a;
  --bg-3:#1d1d22;
  --ink:#f4f1ec;
  --ink-2:#c9c5bd;
  --muted:#8d8a83;
  --gold:#c8a45c;
  --gold-2:#e2c78e;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --shadow:0 24px 60px rgba(0,0,0,.55);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --maxw:1240px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--gold);color:#0a0a0b}

/* 全局颗粒质感 */
body::after{
  content:"";position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 通用容器 / 标题 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.sec{padding:112px 0;position:relative}
.sec--alt{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-1) 30%,var(--bg-1) 70%,var(--bg) 100%)}
.sec--deep{background:var(--bg-1);border-block:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--gold);margin-bottom:20px;
}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--gold);opacity:.6}
h2.sec-title{
  font-family:var(--serif);font-weight:600;font-size:clamp(28px,4.2vw,44px);
  line-height:1.28;letter-spacing:.02em;margin-bottom:16px;
}
.sec-sub{color:var(--muted);font-size:16px;max-width:640px}
.sec-head{margin-bottom:56px}
.sec-head.center{text-align:center}
.sec-head.center .sec-sub{margin-inline:auto}
.sec-head.center .eyebrow::after{content:"";width:34px;height:1px;background:var(--gold);opacity:.6}
.sec-head.center .eyebrow::before{display:block}

/* ---------- 顶栏 ---------- */
header.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  transition:background .4s ease,backdrop-filter .4s ease,border-color .4s ease;
  border-bottom:1px solid transparent;
}
header.nav.solid{
  background:rgba(10,10,11,.82);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom-color:var(--line);
}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:0 28px;height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand .mark{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(150deg,#1e1e22,#0d0d0f);border:1px solid var(--line-2);
}
.brand .mark svg{width:22px;height:22px}
.brand-name{font-family:var(--serif);font-size:20px;font-weight:600;letter-spacing:.06em}
.brand-name small{display:block;font-family:var(--sans);font-size:9.5px;letter-spacing:.3em;color:var(--gold);font-weight:500;margin-top:-2px}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{
  font-size:14.5px;color:var(--ink-2);padding:9px 15px;border-radius:8px;
  transition:color .25s,background .25s;position:relative;white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:999px;padding:7px 16px;transition:border-color .3s}
.search-box:focus-within{border-color:var(--gold)}
.search-box input{background:none;border:none;outline:none;color:var(--ink);font-size:13.5px;width:120px;font-family:var(--sans)}
.search-box input::placeholder{color:#6f6c66}
.search-box svg{width:15px;height:15px;stroke:var(--muted);flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:12px 24px;border-radius:999px;
  font-size:14.5px;font-weight:500;letter-spacing:.03em;transition:all .3s cubic-bezier(.2,.8,.3,1);
}
.btn-gold{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#151008;font-weight:600}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(200,164,92,.34)}
.btn-ghost{border:1px solid var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-2);background:rgba(200,164,92,.07)}
.burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:50% 22%;
  filter:grayscale(.55) contrast(1.12) brightness(.62);transform:scale(1.06)}
.hero-mask{position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 72% 35%,rgba(200,164,92,.13),transparent 58%),
    linear-gradient(105deg,rgba(10,10,11,.97) 6%,rgba(10,10,11,.86) 42%,rgba(10,10,11,.42) 72%,rgba(10,10,11,.72) 100%),
    linear-gradient(180deg,rgba(10,10,11,.7) 0%,transparent 26%,transparent 62%,var(--bg) 100%);
}
.hero-fallback{position:absolute;inset:0;
  background:radial-gradient(90% 70% at 70% 30%,#2a2622,#101013 60%,#0a0a0b)}
.hero-in{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:150px 28px 100px;width:100%}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px 7px 8px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);font-size:12.5px;color:var(--ink-2);
  backdrop-filter:blur(8px);margin-bottom:30px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 0 0 rgba(200,164,92,.7);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(200,164,92,0)}100%{box-shadow:0 0 0 0 rgba(200,164,92,0)}}
.hero h1{
  font-family:var(--serif);font-weight:600;letter-spacing:.02em;
  font-size:clamp(38px,7vw,80px);line-height:1.1;margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--gold-2);position:relative}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:.12em;height:2px;
  background:linear-gradient(90deg,var(--gold),transparent);opacity:.5;
}
.hero-en{
  font-family:var(--serif);font-size:13px;letter-spacing:.5em;color:var(--gold);
  margin-bottom:26px;text-transform:uppercase;
}
.hero-desc{font-size:17px;color:var(--ink-2);max-width:560px;line-height:1.95;margin-bottom:40px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:28px;max-width:660px}
.hero-stats div{padding-right:44px;margin-right:44px;border-right:1px solid var(--line)}
.hero-stats div:last-child{border-right:none;padding-right:0;margin-right:0}
.hero-stats b{font-family:var(--serif);font-size:32px;font-weight:600;color:var(--ink);display:block;line-height:1.2}
.hero-stats b span{color:var(--gold);font-size:19px}
.hero-stats small{font-size:12.5px;color:var(--muted);letter-spacing:.08em}
.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:10px;font-size:10.5px;letter-spacing:.3em;color:var(--muted)}
.scroll-hint i{width:1px;height:46px;background:linear-gradient(180deg,var(--gold),transparent);animation:drop 2.2s ease-in-out infinite}
@keyframes drop{0%,100%{transform:scaleY(.4);opacity:.4;transform-origin:top}50%{transform:scaleY(1);opacity:1;transform-origin:top}}

/* ---------- 核心优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:20px;overflow:hidden}
.adv{background:var(--bg);padding:44px 34px;position:relative;transition:background .4s;overflow:hidden;text-align:center}
.adv::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 100% at 50% 0%,rgba(200,164,92,.14),transparent 62%);opacity:0;transition:opacity .5s}
.adv:hover::before{opacity:1}
.adv:hover{background:var(--bg-2)}
.adv-ico{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;margin:0 auto 22px;
  background:linear-gradient(140deg,var(--ic-a),var(--ic-b));
  box-shadow:0 12px 30px -8px var(--ic-glow),inset 0 1px 0 rgba(255,255,255,.35);
  position:relative;transition:transform .4s cubic-bezier(.2,.8,.3,1)}
.adv:hover .adv-ico{transform:translateY(-4px) scale(1.06)}
/* 每张卡独立配色：琥珀 / 湛蓝 / 紫罗兰 / 青碧 / 翠绿 / 玫红 */
.adv:nth-child(1) .adv-ico{--ic-a:#ffd27a;--ic-b:#e89a3c;--ic-glow:rgba(235,160,60,.5)}
.adv:nth-child(2) .adv-ico{--ic-a:#6fcdff;--ic-b:#2e7ce4;--ic-glow:rgba(70,140,235,.5)}
.adv:nth-child(3) .adv-ico{--ic-a:#c19aff;--ic-b:#7a4fe6;--ic-glow:rgba(135,90,235,.5)}
.adv:nth-child(4) .adv-ico{--ic-a:#5fe9c0;--ic-b:#14b189;--ic-glow:rgba(30,190,145,.5)}
.adv:nth-child(5) .adv-ico{--ic-a:#8ce98f;--ic-b:#2aa84f;--ic-glow:rgba(50,180,90,.5)}
.adv:nth-child(6) .adv-ico{--ic-a:#ff9bbb;--ic-b:#e34a85;--ic-glow:rgba(230,80,140,.5)}
.adv-ico svg{width:27px;height:27px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.adv h3{font-family:var(--serif);font-size:19px;font-weight:600;margin-bottom:10px;position:relative}
.adv p{font-size:14.5px;color:var(--muted);line-height:1.85;position:relative;max-width:300px;margin-inline:auto}

/* ---------- 关于 ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.about-visual{position:relative}
.about-visual .frame{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line-2);aspect-ratio:4/5}
.about-visual .frame img{width:100%;height:100%;object-fit:cover;filter:grayscale(.4) contrast(1.08) brightness(.85)}
.about-visual .frame::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(10,10,11,.85));}
.about-visual .cap{
  position:absolute;left:22px;bottom:22px;right:22px;z-index:2;font-family:var(--serif);
  font-size:15px;letter-spacing:.2em;color:var(--ink);
}
.about-visual .cap small{display:block;font-family:var(--sans);font-size:11px;letter-spacing:.24em;color:var(--gold);margin-top:6px}
.about-txt p{color:var(--ink-2);font-size:15.5px;margin-bottom:18px;line-height:1.95}
.about-txt p strong{color:var(--ink);font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{padding:6px 15px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;color:var(--ink-2);
  background:rgba(255,255,255,.03);transition:all .3s}
.tag:hover{border-color:var(--gold);color:var(--gold-2)}

/* ---------- 分类导航 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat{
  position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:3/4;display:flex;align-items:flex-end;cursor:pointer;background:var(--bg-2);
}
.cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:grayscale(.6) brightness(.55) contrast(1.1);transition:transform .9s cubic-bezier(.2,.8,.3,1),filter .6s}
.cat:hover img{transform:scale(1.12);filter:grayscale(0) brightness(.72) contrast(1.05)}
.cat::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(6,6,7,.92))}
.cat-body{position:relative;z-index:2;padding:24px;width:100%}
.cat-body .ico{font-size:22px;margin-bottom:8px;display:block}
.cat-body h3{font-family:var(--serif);font-size:18px;font-weight:600;margin-bottom:5px}
.cat-body p{font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.6}
.cat-body .num{position:absolute;top:-8px;right:24px;font-size:11px;letter-spacing:.16em;color:var(--gold)}

/* ---------- 精选作品 ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:38px}
.filters button{padding:8px 20px;border-radius:999px;border:1px solid var(--line);font-size:13.5px;
  color:var(--muted);transition:all .3s}
.filters button:hover{color:var(--ink);border-color:var(--line-2)}
.filters button.on{background:var(--gold);border-color:var(--gold);color:#151008;font-weight:600}
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.work{border-radius:16px;overflow:hidden;background:var(--bg-2);border:1px solid var(--line);
  transition:transform .5s cubic-bezier(.2,.8,.3,1),border-color .4s,box-shadow .5s}
.work:hover{transform:translateY(-8px);border-color:rgba(200,164,92,.45);box-shadow:var(--shadow)}
.work-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,#232328,#111114)}
.work-thumb img{width:100%;height:100%;object-fit:cover;filter:brightness(.82) contrast(1.06);
  transition:transform .9s cubic-bezier(.2,.8,.3,1),filter .5s}
.work:hover .work-thumb img{transform:scale(1.09);filter:brightness(.95)}
.work-thumb .ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,11,.25),rgba(10,10,11,.55))}
.work-thumb .play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;
  background:rgba(10,10,11,.55);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.28);
  display:grid;place-items:center;transition:all .4s;
}
.work:hover .play{background:var(--gold);border-color:var(--gold);transform:translate(-50%,-50%) scale(1.1)}
.work:hover .play svg{stroke:#151008}
.play svg{width:18px;height:18px;fill:var(--ink);stroke:var(--ink);stroke-width:0}
.work-thumb .dur{position:absolute;right:12px;bottom:12px;padding:4px 10px;border-radius:6px;
  background:rgba(10,10,11,.78);font-size:11.5px;letter-spacing:.06em;backdrop-filter:blur(4px)}
.work-thumb .kind{position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:999px;
  background:rgba(10,10,11,.7);backdrop-filter:blur(6px);font-size:12px;border:1px solid rgba(255,255,255,.14)}
.work-thumb .pin{position:absolute;right:12px;top:12px;padding:4px 11px;border-radius:999px;
  background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#151008;font-size:11px;font-weight:700}
.work-body{padding:22px 24px 24px}
.work-body h3{font-family:var(--serif);font-size:18.5px;font-weight:600;line-height:1.45;margin-bottom:10px;transition:color .3s}
.work:hover .work-body h3{color:var(--gold-2)}
.work-body p{font-size:13.8px;color:var(--muted);line-height:1.8;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.work-meta{display:flex;align-items:center;gap:18px;font-size:12.5px;color:var(--muted);
  padding-top:14px;border-top:1px solid var(--line)}
.work-meta span{display:inline-flex;align-items:center;gap:6px}
.work-meta svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.6}
.work-meta .likes{margin-left:auto;color:var(--gold)}

/* ---------- 使用指南 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.step{background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:34px 28px;position:relative;overflow:hidden}
.step::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--gold),transparent);opacity:0;transition:opacity .4s;
}
.step:hover::before{opacity:1}
.step-no{font-family:var(--serif);font-size:13px;letter-spacing:.24em;color:var(--gold);margin-bottom:16px;display:block}
.step-ico{width:46px;height:46px;border-radius:12px;background:rgba(200,164,92,.1);border:1px solid rgba(200,164,92,.24);
  display:grid;place-items:center;margin-bottom:18px}
.step-ico svg{width:22px;height:22px;stroke:var(--gold-2);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.step h3{font-family:var(--serif);font-size:17.5px;font-weight:600;margin-bottom:9px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 资讯 ---------- */
.news{display:grid;grid-template-columns:1.4fr 1fr;gap:22px}
.news-main{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--bg-2);
  display:flex;flex-direction:column;cursor:pointer;transition:border-color .4s}
.news-main:hover{border-color:rgba(200,164,92,.42)}
.news-main .pic{aspect-ratio:16/9;overflow:hidden;position:relative}
.news-main .pic img{width:100%;height:100%;object-fit:cover;filter:brightness(.8);transition:transform .9s}
.news-main:hover .pic img{transform:scale(1.07)}
.news-main .txt{padding:28px 30px 30px}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{display:flex;gap:16px;padding:18px;border-radius:14px;border:1px solid var(--line);
  background:var(--bg-2);cursor:pointer;transition:all .35s}
.news-item:hover{border-color:rgba(200,164,92,.4);transform:translateX(5px)}
.news-item .thumb{width:96px;height:72px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--bg-3)}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;filter:brightness(.82)}
.news-item h4{font-family:var(--serif);font-size:15.5px;font-weight:600;line-height:1.55;margin-bottom:6px}
.news-item time{font-size:11.5px;color:var(--gold);letter-spacing:.1em}
.news-item .ncat{font-size:11.5px;color:var(--muted);margin-left:10px}
.date{font-size:11.5px;color:var(--gold);letter-spacing:.14em}

/* ---------- 用户评价 ---------- */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.voice{background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:30px 28px;
  position:relative;transition:transform .4s,border-color .4s}
.voice:hover{transform:translateY(-5px);border-color:rgba(200,164,92,.38)}
.voice .quote{font-family:var(--serif);font-size:42px;color:var(--gold);opacity:.28;line-height:1;position:absolute;top:20px;right:26px}
.voice p{font-size:14.6px;color:var(--ink-2);line-height:1.9;margin-bottom:22px;position:relative}
.voice .who{display:flex;align-items:center;gap:12px}
.voice .ava{width:42px;height:42px;border-radius:50%;background:linear-gradient(140deg,#33333a,#1a1a1f);
  border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--serif);font-size:16px;color:var(--gold-2)}
.voice .who b{font-size:14px;font-weight:600;display:block}
.voice .who small{font-size:12px;color:var(--muted)}
.stars{color:var(--gold);font-size:12px;letter-spacing:2px;margin-bottom:14px}
.voice-form{max-width:720px;margin:44px auto 0;background:var(--bg-2);border:1px solid var(--line);
  border-radius:18px;padding:28px}
.voice-form .row{display:flex;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.voice-form input,.voice-form textarea{
  background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 16px;
  color:var(--ink);font-size:14px;font-family:var(--sans);outline:none;transition:border-color .3s;
}
.voice-form input:focus,.voice-form textarea:focus{border-color:var(--gold)}
.voice-form input{flex:1;min-width:150px}
.voice-form textarea{width:100%;resize:vertical;min-height:88px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;gap:18px;padding:24px 4px;text-align:left;
  font-family:var(--serif);font-size:17px;font-weight:600;transition:color .3s}
.faq-q:hover{color:var(--gold-2)}
.faq-q .idx{font-family:var(--sans);font-size:12px;color:var(--gold);letter-spacing:.14em;flex-shrink:0}
.faq-q .sign{margin-left:auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-2);
  display:grid;place-items:center;flex-shrink:0;transition:all .35s;position:relative}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--ink-2);transition:all .35s}
.faq-q .sign::before{width:11px;height:1.4px}
.faq-q .sign::after{width:1.4px;height:11px}
.faq-item.open .faq-q{color:var(--gold-2)}
.faq-item.open .sign{border-color:var(--gold);transform:rotate(180deg)}
.faq-item.open .sign::after{opacity:0}
.faq-item.open .sign::before{background:var(--gold)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s cubic-bezier(.2,.8,.3,1)}
.faq-a p{font-size:14.8px;color:var(--muted);line-height:1.95;padding:0 4px 26px 46px}

/* ---------- 页脚 ---------- */
footer.foot{border-top:1px solid var(--line);padding:66px 0 30px;background:var(--bg)}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-brand p{font-size:13.8px;color:var(--muted);line-height:1.85;margin-top:18px;max-width:300px}
.foot h5{font-size:13px;letter-spacing:.16em;color:var(--ink);margin-bottom:18px;font-weight:600}
.foot ul{list-style:none}
.foot ul li{margin-bottom:11px}
.foot ul a{font-size:13.8px;color:var(--muted);transition:color .3s}
.foot ul a:hover{color:var(--gold-2)}
.foot-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot-bottom p{font-size:12.8px;color:#6f6c66}
.disclaimer{font-size:12.5px;color:#6f6c66;line-height:1.9;margin-top:22px;max-width:900px}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:9999;background:rgba(6,6,7,.94);backdrop-filter:blur(10px);
  display:none;align-items:center;justify-content:center;padding:40px}
.lightbox.on{display:flex;animation:fade .35s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-in{max-width:900px;width:100%;border-radius:16px;overflow:hidden;border:1px solid var(--line-2);background:var(--bg-2)}
.lb-in img{width:100%;max-height:66vh;object-fit:cover}
.lb-cap{padding:24px 28px}
.lb-cap h3{font-family:var(--serif);font-size:20px;font-weight:600;margin-bottom:8px}
.lb-cap p{font-size:14px;color:var(--muted)}
.lb-close{position:absolute;top:26px;right:30px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line-2);display:grid;place-items:center;font-size:20px;color:var(--ink);transition:all .3s}
.lb-close:hover{background:var(--gold);color:#151008;border-color:var(--gold)}

/* ---------- 滚动揭示 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .85s cubic-bezier(.2,.8,.3,1),transform .85s cubic-bezier(.2,.8,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .works{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .voices{grid-template-columns:1fr}
  .news{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .nav-links,.search-box{display:none}
  .burger{display:flex}
  .nav-links.open{
    display:flex;flex-direction:column;position:absolute;top:76px;left:0;right:0;
    background:rgba(12,12,14,.97);backdrop-filter:blur(18px);padding:14px 22px 22px;
    border-bottom:1px solid var(--line);gap:2px;
  }
  .nav-links.open a{padding:14px 6px;font-size:16px;border-bottom:1px solid var(--line)}
  .sec{padding:76px 0}
  .scroll-hint{display:none}
  .hero-in{padding-bottom:110px}
  .about{grid-template-columns:1fr;gap:44px}
  .about-visual{max-width:420px}
  .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 16px;max-width:none;padding-top:24px}
  .hero-stats div{border-right:none;padding:0;margin:0}
  .hero-stats b{font-size:24px}
  .hero-stats b span{font-size:15px}
  .hero-stats small{font-size:11.5px}
}
@media (max-width:560px){
  .adv-grid,.cat-grid,.works,.steps,.news-list{grid-template-columns:1fr}
  .wrap{padding:0 20px}
  .hero-in{padding:130px 20px 90px}
  .foot-top{grid-template-columns:1fr;gap:30px}
  .hero-cta .btn{width:100%;justify-content:center}
}