/* ============================================================
   上海节静材峰建筑科技有限公司 · 官网样式
   ============================================================ */

:root{
  --bg:#07080A;
  --bg2:#0B0D11;
  --surface:#111419;
  --surface2:#161A20;
  --line:rgba(255,255,255,.09);
  --line2:rgba(255,255,255,.16);
  --txt:#EAECEF;
  --txt2:#98A0AA;
  --txt3:#666E78;
  --warm:#F2A05A;
  --cool:#5FD9C9;
  --sky:#8CC7F7;
  --grad:linear-gradient(100deg,#5FD9C9 0%,#8CC7F7 45%,#F2A05A 100%);
  --grad-soft:linear-gradient(100deg,rgba(95,217,201,.16),rgba(140,199,247,.10),rgba(242,160,90,.14));
  --r:14px;
  --r-lg:22px;
  --max:1240px;
  --ease:cubic-bezier(.16,.84,.24,1);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--txt);font-family:var(--font);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
::selection{background:rgba(95,217,201,.28)}
:where(a,button,[role="button"],summary,input,textarea):focus-visible{
  outline:2px solid var(--cool);outline-offset:4px}
main:focus{outline:none}
section[id]{scroll-margin-top:74px}

.skip-link{
  position:fixed;left:18px;top:12px;z-index:400;padding:9px 15px;border-radius:999px;
  color:#06110f;background:var(--cool);font-size:13px;font-weight:700;
  transform:translateY(-180%);transition:transform .2s var(--ease)}
.skip-link:focus{transform:none}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 28px}
.grad{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ---------- 轻量指针反馈 ---------- */
.pointer-aura{
  position:fixed;left:0;top:0;width:32px;height:32px;border-radius:50%;
  border:1px solid rgba(255,255,255,.45);z-index:300;pointer-events:none;
  opacity:0;transform:translate3d(-50%,-50%,0);mix-blend-mode:difference;
  transition:width .25s var(--ease),height .25s var(--ease),opacity .25s,border-color .25s;
}
.pointer-aura.is-visible{opacity:.8}
.pointer-aura.is-active{width:58px;height:58px;border-color:#fff}

/* ---------- 滚动进度 ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:200;pointer-events:none}
.scroll-progress i{display:block;height:100%;width:0;background:var(--grad);
  box-shadow:0 0 12px rgba(95,217,201,.6);transition:width .1s linear}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:150;transition:.4s var(--ease)}
.nav-inner{
  max-width:var(--max);margin:0 auto;padding:20px 28px;
  display:flex;align-items:center;gap:32px;transition:.4s var(--ease);
}
.nav.is-stuck{background:rgba(7,8,10,.78);backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);border-bottom:1px solid var(--line)}
.nav.is-stuck .nav-inner{padding-top:12px;padding-bottom:12px}

.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:34px;opacity:.95;transition:.4s var(--ease)}
.brand:hover .brand-mark{transform:translateY(-2px)}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-size:16.5px;font-weight:700;letter-spacing:.06em}
.brand-txt i{font-size:8.5px;font-style:normal;color:var(--txt3);letter-spacing:.22em;margin-top:2px}

.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{font-size:14px;color:var(--txt2);position:relative;padding:4px 0;transition:.25s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--grad);transition:.3s var(--ease)}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--txt)}
.nav-links a.is-active::after{width:100%}

.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;
  flex-direction:column;justify-content:center;align-items:center;gap:4px}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--txt);transition:.3s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:999px;font-size:14.5px;font-weight:600;
  letter-spacing:.02em;transition:.3s var(--ease);white-space:nowrap;border:1px solid transparent;
}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round;transition:.3s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--grad);color:#06070A;box-shadow:0 6px 28px -8px rgba(95,217,201,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px -8px rgba(95,217,201,.62)}
.btn-line{border-color:var(--line2);color:var(--txt)}
.btn-line:hover{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.04);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line2);color:var(--txt);background:rgba(255,255,255,.03)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32)}
.btn-sm{padding:9px 18px;font-size:13px}
.btn:disabled{opacity:.58;cursor:wait;pointer-events:none;box-shadow:none}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;
  padding:130px 0 90px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-bg>img{width:100%;height:100%;object-fit:cover;object-position:50% 62%;
  filter:grayscale(.2) brightness(.58) contrast(1.06);transform:scale(1.06)}
.hero-veil{position:absolute;inset:0;
  background:
    radial-gradient(110% 85% at 10% 6%,rgba(7,8,10,.72) 0%,rgba(7,8,10,.42) 52%,rgba(7,8,10,.2) 100%),
    linear-gradient(180deg,rgba(7,8,10,.86) 0%,rgba(7,8,10,.28) 36%,rgba(7,8,10,.6) 78%,#07080A 100%);
}
.hero-grid{position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:76px 76px;
  mask-image:radial-gradient(90% 70% at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(90% 70% at 50% 40%,#000 20%,transparent 78%);
}
.hero-glow{position:absolute;width:900px;height:900px;left:-200px;top:-200px;
  background:radial-gradient(circle,rgba(95,217,201,.13) 0%,rgba(242,160,90,.07) 38%,transparent 66%);
  filter:blur(30px);transition:transform .5s cubic-bezier(.2,.7,.2,1);pointer-events:none}

.hero-content{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:7px 16px 7px 12px;
  border:1px solid var(--line2);border-radius:999px;font-size:12.5px;color:var(--txt2);
  letter-spacing:.06em;background:rgba(255,255,255,.03);backdrop-filter:blur(8px)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--cool);
  box-shadow:0 0 0 3px rgba(95,217,201,.18);animation:pulse 2.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.hero-title{margin:26px 0 0;font-size:clamp(42px,7.6vw,90px);line-height:1.08;
  font-weight:800;letter-spacing:.02em}
.hero-title .line{display:block}
.hero-title em{font-style:normal;color:var(--txt3);font-weight:400}
.hero-sub{margin-top:26px;max-width:660px;font-size:clamp(15px,1.35vw,17.5px);
  color:var(--txt2);line-height:1.95}
.hero-sub b{color:var(--txt);font-weight:600}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;
  max-width:820px;border-top:1px solid var(--line);padding-top:28px}
.hero-stats b{display:block;font-size:clamp(24px,2.9vw,34px);font-weight:700;
  letter-spacing:-.01em;background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent}
.hero-stats span{display:block;font-size:12.5px;color:var(--txt3);margin-top:4px}

.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
  width:22px;height:34px;border:1px solid var(--line2);border-radius:12px;z-index:3}
.hero-scroll span{position:absolute;left:50%;top:7px;width:2px;height:7px;border-radius:2px;
  background:var(--cool);transform:translateX(-50%);animation:scr 1.8s infinite}
@keyframes scr{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,13px)}}

/* ---------- 走马灯 ---------- */
.marquee-sec{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg2);padding:20px 0;overflow:hidden}
.marquee{overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;align-items:center;gap:20px;width:max-content;
  animation:mq 150s linear infinite}
.marquee-track span{font-size:14px;color:var(--txt2);letter-spacing:.1em;white-space:nowrap}
.marquee-track i{color:var(--txt3);font-style:normal}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- 区块通用 ---------- */
.sec{padding:120px 0;position:relative}
.sec-alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:820px;margin-bottom:64px}
.kicker{font-size:12px;letter-spacing:.24em;color:var(--txt3);margin-bottom:20px;text-transform:uppercase}
.sec-head h2{font-size:clamp(28px,4vw,46px);line-height:1.28;font-weight:700;letter-spacing:.01em}
.lead{margin-top:22px;font-size:16px;color:var(--txt2);line-height:1.95}
.lead b{color:var(--txt);font-weight:600}
.tiny{font-size:12.5px;color:var(--txt3);line-height:1.8;margin-top:12px}
.tiny b{color:var(--txt2)}

/* ---------- 关于：卡片 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{padding:32px 28px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);position:relative;overflow:hidden;transition:.4s var(--ease)}
.card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.4s}
.card:hover{transform:translateY(-4px);border-color:var(--line2)}
.card:hover::before{opacity:1}
.card>*{position:relative}
.card-ico{width:38px;height:38px;border-radius:11px;margin-bottom:20px;
  border:1px solid var(--line2);background:rgba(255,255,255,.04);position:relative}
.card-ico::after{content:"";position:absolute;inset:10px;border-radius:3px;background:var(--grad)}
.ico-a::after{clip-path:polygon(50% 0,100% 100%,0 100%)}
.ico-b::after{clip-path:polygon(0 0,100% 0,100% 46%,0 46%,0 54%,100% 54%,100% 100%,0 100%)}
.ico-c::after{border-radius:50%;clip-path:polygon(50% 0,100% 35%,82% 100%,18% 100%,0 35%)}
.ico-d::after{clip-path:polygon(0 0,60% 0,60% 40%,100% 40%,100% 100%,0 100%)}
.ico-e::after{clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.ico-f::after{clip-path:polygon(0 20%,25% 20%,25% 0,75% 0,75% 20%,100% 20%,100% 80%,75% 80%,75% 100%,25% 100%,25% 80%,0 80%)}
.card h3{font-size:17.5px;font-weight:650;margin-bottom:10px}
.card p{font-size:14px;color:var(--txt2);line-height:1.85}

.creed{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:56px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.creed>div{background:var(--bg);padding:26px 24px}
.sec-alt .creed>div{background:var(--bg2)}
.creed span{display:block;font-size:11.5px;letter-spacing:.16em;color:var(--txt3);margin-bottom:9px}
.creed b{font-size:16.5px;font-weight:650;letter-spacing:.04em}

/* ---------- 产品 tabs ---------- */
.tabs{display:flex;gap:8px;margin-bottom:36px;flex-wrap:wrap;
  border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:6px;width:max-content;max-width:100%}
.tab{padding:11px 24px;border-radius:999px;font-size:14.5px;color:var(--txt2);
  transition:.3s var(--ease);white-space:nowrap}
.tab:hover{color:var(--txt)}
.tab.is-on{background:var(--grad);color:#06070A;font-weight:650}

.panel{display:none;animation:fadeUp .55s var(--ease)}
.panel.is-on{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

.panel-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:start}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.badge{font-size:11.5px;padding:5px 12px;border-radius:999px;border:1px solid var(--line2);
  color:var(--txt2);letter-spacing:.03em;background:rgba(255,255,255,.03)}
.badge-cool{border-color:rgba(95,217,201,.34);color:var(--cool);background:rgba(95,217,201,.08)}
.badge-warm{border-color:rgba(242,160,90,.34);color:var(--warm);background:rgba(242,160,90,.08)}
.panel-txt h3{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;margin-bottom:16px}
.panel-txt>p{font-size:15px;color:var(--txt2);line-height:1.95}
.panel-txt>p b{color:var(--txt);font-weight:600}

.feat{margin:28px 0 0;display:grid;gap:2px}
.feat li{position:relative;padding:13px 0 13px 20px;font-size:14.5px;color:var(--txt2);
  line-height:1.8;border-bottom:1px solid var(--line)}
.feat li:first-child{border-top:1px solid var(--line)}
.feat li::before{content:"";position:absolute;left:0;top:22px;width:7px;height:7px;
  border-radius:2px;background:var(--grad)}
.feat li b{color:var(--txt);font-weight:650;margin-right:9px;display:inline-block;
  padding:1px 8px;border-radius:5px;background:rgba(255,255,255,.06);font-size:13px}

.spec{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:30px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.spec>div{background:var(--bg);padding:18px 18px}
.sec-alt .spec>div{background:var(--bg2)}
.spec span{display:block;font-size:11.5px;color:var(--txt3);margin-bottom:7px}
.spec b{display:block;font-size:17px;font-weight:700;color:var(--cool);letter-spacing:.01em}
.spec i{display:block;font-style:normal;font-size:11.5px;color:var(--txt3);margin-top:5px}

.fineprint{margin-top:26px;padding:20px 22px;border:1px dashed var(--line2);border-radius:var(--r);
  font-size:13.5px;color:var(--txt3);line-height:1.9;background:rgba(255,255,255,.02)}
.fineprint b{color:var(--txt2)}

.product-more{
  width:100%;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;
  margin-top:18px;padding:17px 20px;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(100deg,rgba(95,217,201,.08),rgba(255,255,255,.025),rgba(242,160,90,.06));
  text-align:left;overflow:hidden;position:relative;transition:.35s var(--ease)}
.product-more::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:.35s}
.product-more>*{position:relative}
.product-more span{font-size:14px;font-weight:650}
.product-more i{font-size:11.5px;font-style:normal;color:var(--txt3)}
.product-more b{font-size:20px;font-weight:400;color:var(--cool);transition:.35s var(--ease)}
.product-more:hover{border-color:rgba(95,217,201,.45);transform:translateY(-2px)}
.product-more:hover::before{opacity:.045}
.product-more:hover b{transform:translate(3px,-3px)}

.panel-media{display:grid;gap:14px;position:sticky;top:100px}
.ph{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);position:relative}
.ph img{width:100%;transition:.7s var(--ease)}
.ph:hover img{transform:scale(1.04)}
.ph-tall img{aspect-ratio:4/5;object-fit:cover}
.ph:not(.ph-tall) img{aspect-ratio:16/10;object-fit:cover}
.ph figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 18px 14px;font-size:12px;
  color:var(--txt2);background:linear-gradient(transparent,rgba(6,7,10,.92))}

/* 使用成本对比条 */
.compare{margin-top:30px;padding:24px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface)}
.compare-head{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:baseline;margin-bottom:20px}
.compare-head b{font-size:15px}
.compare-head span{font-size:12px;color:var(--txt3)}
.bar{display:grid;grid-template-columns:126px 1fr;align-items:center;gap:14px;margin-bottom:11px}
.bar>span{font-size:13px;color:var(--txt2)}
.bar>i{display:block;height:34px;border-radius:8px;background:rgba(255,255,255,.06);position:relative;overflow:hidden}
.bar>i::before{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--w);
  background:linear-gradient(90deg,rgba(255,255,255,.13),rgba(255,255,255,.06));
  border-radius:8px;transform:scaleX(0);transform-origin:left;transition:transform 1.1s var(--ease)}
.compare.is-in .bar>i::before{transform:scaleX(1)}
.bar>i em{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-style:normal;
  font-size:13px;font-weight:650;z-index:2}
.bar.is-hi>i::before{background:var(--grad);opacity:.9}
.bar.is-hi>i em{color:#06070A}
.compare .note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--txt3);line-height:1.85}

/* 其他代理 */
.other{margin-top:56px;padding:32px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface)}
.other h4{font-size:16px;margin-bottom:8px}
.other p{font-size:13.5px;color:var(--txt3);margin-bottom:18px}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips span{font-size:13px;padding:8px 15px;border-radius:999px;border:1px solid var(--line2);
  color:var(--txt2);background:rgba(255,255,255,.03);transition:.3s}
.chips span:hover{border-color:rgba(95,217,201,.4);color:var(--txt)}
.chips-sm span{font-size:12px;padding:5px 12px}
.chips-line span{border-style:dashed}

/* ---------- 快速方案匹配 ---------- */
.sec-matcher{
  overflow:hidden;background:
  radial-gradient(70% 90% at 0% 50%,rgba(95,217,201,.08),transparent 60%),
  radial-gradient(60% 80% at 100% 30%,rgba(242,160,90,.075),transparent 65%),var(--bg)}
.sec-matcher::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.32;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(90deg,#000,transparent 82%);
}
.matcher-head{position:relative}
.matcher-shell{
  position:relative;display:grid;grid-template-columns:minmax(320px,.82fr) 1.18fr;
  min-height:620px;border:1px solid var(--line2);border-radius:32px;overflow:hidden;
  background:rgba(11,13,17,.88);box-shadow:0 40px 100px rgba(0,0,0,.36)}
.matcher-visual{
  position:relative;min-height:620px;overflow:hidden;
  background:radial-gradient(circle at 50% 48%,rgba(95,217,201,.14),transparent 35%),
    linear-gradient(145deg,rgba(255,255,255,.025),transparent)}
.matcher-visual::before{
  content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,transparent 49.8%,rgba(255,255,255,.07) 50%,transparent 50.2%),
  linear-gradient(transparent 49.8%,rgba(255,255,255,.07) 50%,transparent 50.2%)}
.matcher-orbit{position:absolute;left:50%;top:50%;border:1px solid rgba(255,255,255,.13);
  border-radius:50%;transform:translate(-50%,-50%) rotate(-16deg)}
.orbit-a{width:72%;aspect-ratio:1}
.orbit-b{width:46%;aspect-ratio:1;transform:translate(-50%,-50%) rotate(28deg)}
.matcher-orbit::before,.matcher-orbit::after{content:"";position:absolute;width:7px;height:7px;
  border-radius:50%;background:var(--cool);box-shadow:0 0 18px rgba(95,217,201,.8)}
.matcher-orbit::before{left:14%;top:17%}.matcher-orbit::after{right:9%;bottom:24%;background:var(--warm)}
.matcher-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:156px;height:156px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.22);background:rgba(7,8,10,.65);
  box-shadow:0 0 0 28px rgba(255,255,255,.025),0 0 80px rgba(95,217,201,.11)}
.matcher-core i{font-style:normal;font-size:58px;font-weight:200;letter-spacing:-.06em}
.matcher-signals{position:absolute;inset:30px;display:flex;flex-direction:column;
  justify-content:space-between;align-items:flex-start}
.matcher-signals i{font-size:9px;font-style:normal;letter-spacing:.22em;color:var(--txt3)}
.matcher-signals i:nth-child(2){align-self:flex-end}
.matcher-ui{padding:54px 58px;display:flex;flex-direction:column;justify-content:center;
  border-left:1px solid var(--line)}
.matcher-top{display:flex;justify-content:space-between;align-items:center;
  font-size:10.5px;letter-spacing:.15em;color:var(--txt3)}
.matcher-top button{font-size:12px;letter-spacing:0;color:var(--txt2);transition:.25s}
.matcher-top button:hover{color:var(--txt)}
.matcher-top button:disabled{opacity:.25;cursor:default}
.matcher-progress{height:2px;background:var(--line);margin:14px 0 44px;overflow:hidden}
.matcher-progress i{display:block;width:33.333%;height:100%;background:var(--grad);transition:width .45s var(--ease)}
.matcher-question>p,.matcher-result>p{font-size:10px;letter-spacing:.22em;color:var(--cool);margin-bottom:13px}
.matcher-question h3,.matcher-result h3{font-size:clamp(26px,3.2vw,42px);line-height:1.25;margin-bottom:30px}
.matcher-options{display:grid;gap:10px}
.matcher-option{
  display:grid;grid-template-columns:34px 1fr auto;gap:14px;align-items:center;
  padding:17px 18px;border:1px solid var(--line);border-radius:14px;text-align:left;
  background:rgba(255,255,255,.02);transition:.3s var(--ease)}
.matcher-option>span{width:28px;height:28px;border:1px solid var(--line2);border-radius:50%;
  display:grid;place-items:center;font-size:10px;color:var(--txt3)}
.matcher-option b{font-size:14.5px;font-weight:600}
.matcher-option i{font-size:11.5px;font-style:normal;color:var(--txt3)}
.matcher-option::after{content:"→";color:var(--txt3);transition:.3s}
.matcher-option:hover{border-color:rgba(95,217,201,.42);background:rgba(95,217,201,.055);transform:translateX(4px)}
.matcher-option:hover::after{color:var(--cool);transform:translateX(3px)}
.matcher-result-no{display:block;font-size:11px;letter-spacing:.18em;color:var(--txt3);margin-bottom:12px}
.matcher-result-tags{display:flex;gap:8px;flex-wrap:wrap;margin:-10px 0 24px}
.matcher-result-tags span{font-size:11px;padding:5px 11px;border:1px solid rgba(95,217,201,.3);
  color:var(--cool);border-radius:999px;background:rgba(95,217,201,.06)}
.matcher-result-copy{font-size:15px;color:var(--txt2);line-height:1.9}
.matcher-reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:26px 0}
.matcher-reasons span{padding:12px;border:1px solid var(--line);border-radius:11px;font-size:12px;color:var(--txt2)}
.matcher-actions{display:flex;gap:10px;flex-wrap:wrap}
.matcher-result small{display:block;margin-top:18px;font-size:11.5px;color:var(--txt3);line-height:1.7}

/* ---------- 技术：3D 剖面 ---------- */
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.stack-legend{display:grid;gap:2px}
.stack-legend li{display:flex;gap:16px;padding:16px 18px;border-radius:var(--r);
  cursor:pointer;transition:.3s var(--ease);border:1px solid transparent}
.stack-legend li:hover,.stack-legend li.is-on{background:var(--surface);border-color:rgba(95,217,201,.35)}
.sl-no{font-size:12px;color:var(--txt3);font-weight:700;letter-spacing:.06em;padding-top:3px;
  transition:.3s}
.stack-legend li.is-on .sl-no{color:var(--cool)}
.stack-legend b{display:block;font-size:15.5px;font-weight:650;margin-bottom:4px}
.stack-legend i{display:block;font-style:normal;font-size:13px;color:var(--txt3);line-height:1.75}

.stack-wrap{display:flex;flex-direction:column;align-items:center;gap:22px}

/* 剖面插画 + 区域高亮 */
.cutaway{position:relative;width:100%;max-width:440px;border-radius:var(--r-lg);
  overflow:hidden;border:1px solid var(--line);background:#0a0b0d}
.cutaway img{display:block;width:100%;height:auto}
.layer-marks{position:absolute;inset:0;margin:0;padding:0;list-style:none;pointer-events:none}
.layer-marks li{
  position:absolute;left:4.5%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;letter-spacing:.04em;
  color:var(--txt);background:rgba(10,11,13,.78);
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 4px 16px rgba(0,0,0,.45);
  pointer-events:auto;cursor:pointer;
  transition:transform .25s var(--ease),background .25s,border-color .25s,color .25s,box-shadow .25s}
.layer-marks li:hover,.layer-marks li.is-on{
  color:#06110f;background:var(--cool);border-color:var(--cool);
  box-shadow:0 0 0 4px rgba(95,217,201,.22),0 0 22px rgba(95,217,201,.45);
  transform:translateY(-50%) scale(1.08)}
.layer-marks li:focus-visible{outline:2px solid #fff;outline-offset:3px}
.layer-marks li[data-i="1"].is-on,.layer-marks li[data-i="1"]:hover{
  color:#1a1208;background:#f2a05a;border-color:#f2a05a;
  box-shadow:0 0 0 4px rgba(242,160,90,.22),0 0 22px rgba(242,160,90,.4)}

.stack-cap{font-size:12px;color:var(--txt3);text-align:center}

.tech-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:80px}
.tcard{padding:30px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface);transition:.4s var(--ease)}
.tcard:hover{transform:translateY(-3px);border-color:var(--line2)}
.tcard h4{font-size:17px;font-weight:650;margin-bottom:14px;display:flex;
  align-items:baseline;gap:10px;flex-wrap:wrap}
.tcard h4 span{font-size:11px;color:var(--txt3);letter-spacing:.1em;font-weight:400;
  border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.tcard p{font-size:14px;color:var(--txt2);line-height:1.9}
.tcard p b{color:var(--cool);font-weight:650}
.tcard p i{display:block;font-style:normal;font-size:12px;color:var(--txt3);margin-top:10px}

/* 干湿对比表 */
.vs{margin-top:76px}
.vs h4{font-size:19px;font-weight:650;margin-bottom:22px}
.vs h4 em{font-style:normal;color:var(--txt3);font-weight:400;margin:0 6px}
.vs-table{width:100%;border-collapse:collapse;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden}
.vs-table th,.vs-table td{padding:15px 20px;text-align:left;font-size:14px;
  border-bottom:1px solid var(--line)}
.vs-table thead th{font-size:12.5px;color:var(--txt3);font-weight:500;letter-spacing:.06em;
  background:rgba(255,255,255,.03)}
.vs-table thead th.on{color:var(--cool)}
.vs-table td{color:var(--txt2)}
.vs-table td:first-child{color:var(--txt3);width:180px}
.vs-table td.on{color:var(--txt);font-weight:650;background:rgba(95,217,201,.055)}
.vs-table tbody tr:last-child th,.vs-table tbody tr:last-child td{border-bottom:0}

/* ---------- 服务流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.steps li{padding:26px 22px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--bg);position:relative;overflow:hidden;transition:.4s var(--ease);cursor:pointer}
.steps li::after{content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:var(--grad);transition:.5s var(--ease)}
.steps li:hover,.steps li.is-on{border-color:rgba(95,217,201,.36);transform:translateY(-3px)}
.steps li:hover::after,.steps li.is-on::after{width:100%}
.steps li.is-on{background:linear-gradient(145deg,rgba(95,217,201,.075),var(--bg))}
.steps li:focus-visible{outline:2px solid var(--cool);outline-offset:3px}
.steps span{display:block;font-size:12px;color:var(--txt3);letter-spacing:.14em;
  font-weight:700;margin-bottom:14px}
.steps b{display:block;font-size:16px;font-weight:650;margin-bottom:9px}
.steps p{font-size:13px;color:var(--txt2);line-height:1.8}

.process-focus{
  display:grid;grid-template-columns:170px 1fr auto;gap:34px;align-items:center;
  margin-top:18px;padding:32px 34px;border:1px solid rgba(95,217,201,.26);
  border-radius:var(--r-lg);background:
  linear-gradient(110deg,rgba(95,217,201,.07),rgba(255,255,255,.015) 50%,rgba(242,160,90,.045));
  box-shadow:0 24px 60px rgba(0,0,0,.18)}
.process-focus-no{align-self:stretch;display:flex;flex-direction:column;justify-content:space-between;
  padding-right:28px;border-right:1px solid var(--line)}
.process-focus-no span{font-size:9px;letter-spacing:.2em;color:var(--txt3)}
.process-focus-no b{font-size:30px;font-weight:300;letter-spacing:-.04em;color:var(--cool)}
.process-focus-main>p:first-child{font-size:10px;letter-spacing:.16em;color:var(--warm);margin-bottom:6px}
.process-focus-main h3{font-size:22px;margin-bottom:8px}
.process-focus-main>p:not(:first-child){font-size:13.5px;color:var(--txt2);line-height:1.8}
.process-output{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.process-output span{font-size:11.5px;padding:5px 11px;border:1px solid var(--line);
  border-radius:999px;color:var(--txt3);background:rgba(255,255,255,.025)}
.process-focus-nav{display:flex;gap:8px}
.process-focus-nav button{width:42px;height:42px;border:1px solid var(--line2);border-radius:50%;
  transition:.25s var(--ease);font-size:17px}
.process-focus-nav button:hover{background:var(--txt);color:var(--bg);transform:scale(1.05)}

.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
.ibox{padding:28px 26px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.ibox h4{font-size:16px;font-weight:650;margin-bottom:14px;padding-bottom:14px;
  border-bottom:1px solid var(--line)}
.ibox p{font-size:13.5px;color:var(--txt2);line-height:1.85}
.ibox p b{color:var(--cool);font-weight:650}
.ibox p+p{margin-top:12px}
.mini{display:grid;gap:1px;background:var(--line);border-radius:10px;overflow:hidden}
.mini li{background:var(--surface);display:flex;justify-content:space-between;
  align-items:baseline;gap:12px;padding:11px 13px}
.mini span{font-size:12.5px;color:var(--txt3)}
.mini b{font-size:13.5px;color:var(--cool);font-weight:650;text-align:right}

.accept{margin-top:44px;padding:34px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface)}
.accept h4{font-size:17px;font-weight:650;margin-bottom:20px}

/* ---------- 现场影像 ---------- */
.sec-film{
  overflow:hidden;background:
  radial-gradient(70% 70% at 10% 15%,rgba(95,217,201,.075),transparent 65%),
  radial-gradient(55% 65% at 100% 90%,rgba(242,160,90,.065),transparent 70%),var(--bg)}
.film-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(290px,.65fr);
  gap:18px;align-items:start}
.film-card{border:1px solid var(--line);border-radius:26px;overflow:hidden;background:var(--surface);
  transition:border-color .35s var(--ease),transform .35s var(--ease),box-shadow .35s var(--ease)}
.film-card:hover{border-color:rgba(95,217,201,.3);transform:translateY(-3px);
  box-shadow:0 30px 70px rgba(0,0,0,.25)}
.film-media{position:relative;background:#030405;overflow:hidden}
.film-wide .film-media{aspect-ratio:16/9}
.film-tall .film-media{aspect-ratio:9/16}
.site-video{width:100%;height:100%;display:block;object-fit:cover;background:#030405}
.site-video::cue{color:#fff;background:rgba(5,7,9,.78);font-size:14px}
.film-stamp{position:absolute;left:18px;top:18px;z-index:2;padding:6px 11px;border-radius:999px;
  border:1px solid rgba(255,255,255,.2);background:rgba(7,8,10,.65);backdrop-filter:blur(8px);
  color:rgba(255,255,255,.75);font-size:9px;letter-spacing:.18em;pointer-events:none}
.film-copy{padding:26px 28px 28px;display:flex;flex-direction:column;gap:20px}
.film-copy>div>span{display:block;font-size:10px;letter-spacing:.15em;color:var(--txt3);margin-bottom:8px}
.film-copy h3{font-size:clamp(19px,2vw,26px);line-height:1.35;margin-bottom:10px}
.film-copy p{font-size:13.5px;color:var(--txt2);line-height:1.85}
.film-tags{display:flex;gap:7px;flex-wrap:wrap}
.film-tags i{font-style:normal;font-size:10.5px;padding:5px 10px;border:1px solid var(--line);
  border-radius:999px;color:var(--txt3);background:rgba(255,255,255,.025)}
.film-note{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;
  margin-top:18px;padding:18px 22px;border:1px dashed var(--line2);border-radius:var(--r);
  background:rgba(255,255,255,.018)}
.film-note>span{font-size:9px;letter-spacing:.18em;color:var(--warm)}
.film-note p{font-size:12px;color:var(--txt3);line-height:1.7}
.film-note a{font-size:12.5px;color:var(--cool);white-space:nowrap}
.film-note a:hover{color:var(--txt)}

/* ---------- 产品详情抽屉 ---------- */
.product-dialog{
  width:min(1160px,calc(100vw - 42px));max-height:min(860px,calc(100vh - 42px));
  margin:auto;padding:0;border:1px solid var(--line2);border-radius:28px;color:var(--txt);
  background:rgba(9,11,14,.97);box-shadow:0 50px 160px rgba(0,0,0,.72);overflow:hidden}
.product-dialog::backdrop{background:rgba(2,3,5,.82);backdrop-filter:blur(10px)}
.product-dialog[open]{display:grid;grid-template-columns:.82fr 1.18fr;animation:dialogIn .45s var(--ease)}
@keyframes dialogIn{from{opacity:0;transform:translateY(24px) scale(.985)}to{opacity:1;transform:none}}
.dialog-close{position:absolute;right:20px;top:20px;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line2);background:rgba(7,8,10,.72);z-index:3;font-size:25px;line-height:1;transition:.25s}
.dialog-close:hover{background:var(--txt);color:var(--bg);transform:rotate(90deg)}
.dialog-visual{position:relative;min-height:700px;overflow:hidden;background:#08090b}
.dialog-visual::after{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(6,7,9,.05),rgba(6,7,9,.7)),
  radial-gradient(circle at 50% 40%,transparent,rgba(6,7,9,.42))}
.dialog-visual img{width:100%;height:100%;object-fit:cover;filter:saturate(.75) contrast(1.08)}
.dialog-visual>span{position:absolute;left:28px;top:26px;z-index:2;font-size:10px;
  letter-spacing:.2em;color:var(--txt2);padding:6px 12px;border:1px solid var(--line2);border-radius:999px;
  background:rgba(7,8,10,.55);backdrop-filter:blur(8px)}
.dialog-visual-word{position:absolute;left:22px;bottom:8px;z-index:2;font-size:clamp(62px,8vw,108px);
  line-height:.85;font-weight:800;letter-spacing:-.08em;color:rgba(255,255,255,.13)}
.dialog-content{padding:62px 56px;overflow:auto}
.dialog-kicker{font-size:10px;letter-spacing:.22em;color:var(--cool);margin-bottom:14px}
.dialog-content>h2{font-size:clamp(28px,3.4vw,44px);line-height:1.22;margin-bottom:18px}
.dialog-lead{font-size:14.5px;color:var(--txt2);line-height:1.9}
.dialog-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:28px 0;
  background:var(--line);border:1px solid var(--line);border-radius:13px;overflow:hidden}
.dialog-metrics div{padding:16px;background:var(--surface)}
.dialog-metrics span{display:block;font-size:10px;color:var(--txt3);margin-bottom:5px}
.dialog-metrics b{font-size:15px;color:var(--cool)}
.dialog-columns{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:28px}
.dialog-columns h3{font-size:13px;margin-bottom:12px}
.dialog-columns ul{display:grid;gap:8px}
.dialog-columns li{position:relative;padding-left:16px;font-size:12.5px;color:var(--txt2);line-height:1.7}
.dialog-columns li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--cool)}
.dialog-columns>div:last-child li::before{background:var(--warm)}
.dialog-proof{margin-top:28px;padding:20px;border-left:2px solid var(--cool);background:rgba(95,217,201,.045)}
.dialog-proof span{display:block;font-size:9px;letter-spacing:.2em;color:var(--cool);margin-bottom:7px}
.dialog-proof p{font-size:12.5px;color:var(--txt2);line-height:1.8}
.dialog-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}

/* ---------- 服务网络 ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tier{padding:32px 28px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface);position:relative;overflow:hidden;transition:.4s var(--ease)}
.tier::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.4s}
.tier:hover{transform:translateY(-4px);border-color:var(--line2)}
.tier:hover::before{opacity:1}
.tier>*{position:relative}
.tier-no{display:inline-block;font-size:11.5px;letter-spacing:.14em;color:var(--txt3);
  border:1px solid var(--line2);border-radius:999px;padding:4px 13px;margin-bottom:18px}
.tier h3{font-size:21px;font-weight:700;margin-bottom:14px}
.tier-way{font-size:14px;color:var(--txt2);line-height:1.9;min-height:76px}
.tier-way b{color:var(--txt);font-weight:650}
.tier-tag{display:inline-block;margin:16px 0;font-size:12px;padding:6px 13px;border-radius:8px;
  background:rgba(255,255,255,.05);color:var(--txt2)}
.tag-ok{background:rgba(95,217,201,.13);color:var(--cool)}
.tag-warn{background:rgba(242,160,90,.13);color:var(--warm)}

.proof-quote{margin-top:36px;padding:34px 38px;border-left:2px solid;
  border-image:var(--grad) 1;background:var(--surface);border-radius:0 var(--r-lg) var(--r-lg) 0}
.proof-quote p{font-size:16px;color:var(--txt2);line-height:1.95}
.proof-quote b{color:var(--txt);font-weight:650}

.showroom{margin-top:56px}
.showroom h4{font-size:19px;font-weight:650;margin-bottom:12px}
.showroom>p{font-size:14px;color:var(--txt2);line-height:1.9;max-width:820px}
.showroom>p b{color:var(--txt);font-weight:600}
.deal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:24px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.deal-grid>div{background:var(--bg);padding:22px 24px}
.sec-alt .deal-grid>div{background:var(--bg2)}
.deal-grid span{display:block;font-size:11.5px;color:var(--txt3);letter-spacing:.12em;margin-bottom:8px}
.deal-grid b{font-size:15.5px;font-weight:650}

/* ---------- 案例 ---------- */
.case-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:760px;
  margin:-18px 0 44px;border-top:1px solid var(--line);padding-top:26px}
.case-stats b{display:block;font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.01em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.case-stats span{display:block;font-size:12.5px;color:var(--txt3);margin-top:4px}

/* 脱敏条：源码中不含真实地址，仅为视觉占位 */
.ccard .mask{display:block;height:15px;margin:3px 0 11px;border-radius:4px;
  background:repeating-linear-gradient(-45deg,rgba(255,255,255,.16) 0 5px,rgba(255,255,255,.05) 5px 10px);
  position:relative;overflow:hidden}
.ccard .mask::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.09),transparent);
  transform:translateX(-100%);animation:maskShine 3.2s ease-in-out infinite}
.mask-a{width:64%}
.mask-b{width:78%}
.mask-c{width:52%}
@keyframes maskShine{55%,100%{transform:translateX(100%)}}

.case-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.cf{padding:8px 18px;border-radius:999px;border:1px solid var(--line);font-size:13px;
  color:var(--txt2);transition:.3s var(--ease)}
.cf:hover{border-color:var(--line2);color:var(--txt)}
.cf.is-on{background:var(--txt);color:#06070A;border-color:var(--txt);font-weight:650}
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.ccard{padding:20px 20px 18px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--bg);transition:.35s var(--ease)}
.ccard.is-hide{display:none}
.ccard:hover{border-color:rgba(95,217,201,.4);background:var(--surface);transform:translateY(-2px)}
.ccard .ct{display:block;font-size:11.5px;color:var(--txt3);letter-spacing:.08em;margin-bottom:7px}
.ccard b{display:block;font-size:15.5px;font-weight:650;margin-bottom:8px}
.ccard i{display:block;font-style:normal;font-size:12px;color:var(--txt2)}
.ccard.is-hl{border-color:rgba(242,160,90,.4);background:rgba(242,160,90,.05)}
.ccard.is-hl .ct{color:var(--warm)}

.channels{display:grid;grid-template-columns:1fr 1.25fr;gap:40px;align-items:center;
  margin-top:52px;padding:38px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface)}
.ch-txt h4{font-size:20px;font-weight:650;margin-bottom:10px}
.ch-txt p{font-size:14px;color:var(--txt2);line-height:1.9}
.ch-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.chc{display:flex;gap:16px;align-items:center;padding:20px;border:1px solid var(--line);
  border-radius:var(--r);background:var(--bg2);transition:.35s var(--ease)}
.chc:hover{border-color:var(--line2);transform:translateY(-2px)}
.chc-ico{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;
  justify-content:center;font-size:10px;font-weight:700;flex-shrink:0;text-align:center;
  line-height:1.2;letter-spacing:.02em}
.chc-ico.xhs{background:linear-gradient(135deg,#FF3B57,#FF6B7F);color:#fff}
.chc-ico.bili{background:linear-gradient(135deg,#00A1D6,#38C7F0);color:#fff}
.chc>div span{display:block;font-size:11.5px;color:var(--txt3);margin-bottom:4px}
.chc>div b{display:block;font-size:16px;font-weight:700;letter-spacing:.02em}
.chc>div i{display:block;font-style:normal;font-size:11.5px;color:var(--txt3);margin-top:3px}

/* ---------- 场景 ---------- */
.sec-scene .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.scene{background:var(--bg);padding:30px 28px;transition:.4s var(--ease)}
.scene:hover{background:var(--surface)}
.scene b{display:block;font-size:16px;font-weight:650;margin-bottom:10px}
.scene p{font-size:13.5px;color:var(--txt2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:10px;max-width:960px}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:var(--bg);
  transition:.3s var(--ease);overflow:hidden}
.sec-alt .faq details{background:var(--bg)}
.faq details[open]{border-color:var(--line2);background:var(--surface)}
.faq summary{padding:22px 56px 22px 26px;font-size:16px;font-weight:600;cursor:pointer;
  position:relative;list-style:none;line-height:1.6}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:26px;top:29px;width:11px;height:11px;
  border-right:1.6px solid var(--txt2);border-bottom:1.6px solid var(--txt2);
  transform:rotate(45deg);transition:.35s var(--ease)}
.faq details[open] summary::after{transform:rotate(225deg);border-color:var(--cool)}
.faq summary:hover{color:#fff}
.faq details>div{padding:0 26px 26px;font-size:14.5px;color:var(--txt2);line-height:1.95}
.faq details>div b{color:var(--txt);font-weight:650}

/* ---------- 联系 ---------- */
.sec-contact{background:
  radial-gradient(80% 60% at 15% 0%,rgba(95,217,201,.09),transparent 60%),
  radial-gradient(70% 60% at 90% 100%,rgba(242,160,90,.08),transparent 60%),var(--bg2);
  border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-left .lead{max-width:520px}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:38px}
.cc{padding:20px 22px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.cc span{display:block;font-size:11.5px;color:var(--txt3);letter-spacing:.1em;margin-bottom:8px}
.cc b{font-size:15px;font-weight:650;line-height:1.6;word-break:break-all}
.cc b a:hover{color:var(--cool)}
.cc-main{grid-column:1/-1;background:linear-gradient(135deg,rgba(95,217,201,.11),rgba(242,160,90,.07));
  border-color:rgba(95,217,201,.3)}
.cc-main b{font-size:30px;font-weight:800;letter-spacing:.04em;display:block;margin-bottom:16px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.cc-acts{display:flex;gap:10px;flex-wrap:wrap}
.cc-bot{grid-column:1/-1;display:grid;grid-template-columns:132px 1fr;gap:22px;align-items:center;
  background:linear-gradient(135deg,rgba(95,217,201,.08),rgba(255,255,255,.02));
  border-color:rgba(95,217,201,.24)}
.cc-bot-qr{display:block;padding:7px;border-radius:15px;background:#fff;
  box-shadow:0 12px 30px rgba(0,0,0,.28);transition:.3s var(--ease)}
.cc-bot-qr:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(0,0,0,.36)}
.cc-bot-qr img{display:block;width:100%;height:auto;border-radius:8px}
.cc-bot-copy b{display:block;font-size:16px;word-break:normal}
.cc-bot-copy p{margin:8px 0 12px;color:var(--txt3);font-size:12.5px;line-height:1.75}
.cc-bot-link{display:inline-flex;align-items:center;gap:6px;color:var(--cool);font-size:12.5px;
  font-weight:650;transition:.25s var(--ease)}
.cc-bot-link:hover{color:#fff;transform:translateX(3px)}

.contact-form{padding:38px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--surface);display:grid;gap:18px}
.contact-form h3{font-size:20px;font-weight:700;margin-bottom:2px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:block;font-size:12.5px;color:var(--txt3);letter-spacing:.04em}
.contact-form label em{color:var(--warm);font-style:normal}
.contact-form input[type=text],.contact-form textarea{
  width:100%;margin-top:8px;padding:13px 15px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg);color:var(--txt);font-family:inherit;font-size:14.5px;
  transition:.3s var(--ease);resize:vertical}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:rgba(95,217,201,.6);
  box-shadow:0 0 0 3px rgba(95,217,201,.1)}
.contact-form input.err,.contact-form textarea.err{border-color:rgba(242,120,90,.8)}
.contact-form ::placeholder{color:var(--txt3);opacity:.65}
.checks{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.ck{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border:1px solid var(--line);
  border-radius:999px;cursor:pointer;transition:.3s var(--ease);font-size:13px!important;color:var(--txt2)!important}
.ck:hover{border-color:var(--line2)}
.ck input{accent-color:#5FD9C9;width:14px;height:14px;cursor:pointer}
.ck:has(input:checked){border-color:rgba(95,217,201,.55);background:rgba(95,217,201,.09);color:var(--txt)!important}
.fsubmit{display:flex;gap:12px;flex-wrap:wrap;margin-top:4px}
.ftip{font-size:12px;color:var(--txt3);line-height:1.8}
.ftip b{color:var(--txt2)}
.form-honey{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;
  opacity:0!important;pointer-events:none!important}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:76px 0 30px}
.foot-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:44px;
  padding-bottom:44px;border-bottom:1px solid var(--line)}
.foot-logo{width:230px;opacity:.9;margin-bottom:22px}
.foot-brand p{font-size:13px;color:var(--txt3);line-height:1.9;max-width:400px}
.creed-mini{margin-top:18px;font-size:12px;color:var(--txt3);letter-spacing:.1em}
.foot-col h5{font-size:12px;letter-spacing:.16em;color:var(--txt2);margin-bottom:18px;font-weight:600}
.foot-col a,.foot-col span{display:block;font-size:13px;color:var(--txt3);
  line-height:1.6;margin-bottom:11px;transition:.25s}
.foot-col a:hover{color:var(--cool)}
.foot-bot{display:flex;justify-content:space-between;gap:36px;padding-top:26px;
  font-size:12px;color:var(--txt3);line-height:1.85}
.foot-bot .dim{color:#4E545C;max-width:620px}
.foot-bot a{color:#6B7280;text-decoration:none;transition:.25s}
.foot-bot a:hover{color:var(--txt2)}
.br-m{display:none}

/* ---------- 移动底栏 / toast ---------- */
.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:140;
  background:rgba(7,8,10,.92);backdrop-filter:blur(16px);border-top:1px solid var(--line);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));gap:10px}
.mbar a{flex:1;text-align:center;padding:13px;border-radius:12px;border:1px solid var(--line2);
  font-size:14.5px;font-weight:650}
.mbar-main{background:var(--grad);color:#06070A!important;border-color:transparent!important}

.toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);z-index:300;
  padding:13px 24px;border-radius:999px;background:rgba(15,18,22,.96);border:1px solid var(--line2);
  font-size:14px;opacity:0;pointer-events:none;transition:.35s var(--ease);
  backdrop-filter:blur(12px);box-shadow:0 12px 40px -10px rgba(0,0,0,.8)}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- 滚动进场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}
.reveal[data-delay="5"]{transition-delay:.4s}
.reveal[data-delay="6"]{transition-delay:.48s}
.reveal[data-delay="7"]{transition-delay:.56s}
.reveal[data-delay="8"]{transition-delay:.64s}

@media (prefers-reduced-motion:reduce){
  /* 无限循环动画必须直接停掉：只压短时长会变成高频闪烁 */
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .marquee-track,.eyebrow .dot,.hero-scroll span,.ccard .mask::after{animation:none!important}
  .reveal{opacity:1;transform:none}
  .pointer-aura{display:none}
  html{scroll-behavior:auto}
}

@media (pointer:coarse){
  .pointer-aura{display:none}
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .value-grid,.tiers,.sec-scene .scene-grid,.deal-grid{grid-template-columns:repeat(2,1fr)}
  .steps,.info-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(3,1fr)}
  .creed{grid-template-columns:repeat(2,1fr)}
  .panel-grid{grid-template-columns:1fr;gap:34px}
  .panel-media{position:static;grid-template-columns:1fr 1fr}
  .ph-tall img{aspect-ratio:16/11}
  .tech-grid{grid-template-columns:1fr;gap:40px}
  .stack-wrap{order:-1}
  .foot-top{grid-template-columns:1fr 1fr;gap:36px}
  .channels{grid-template-columns:1fr;gap:26px}
  .contact-grid{grid-template-columns:1fr;gap:44px}
  .matcher-shell{grid-template-columns:.72fr 1.28fr}
  .matcher-ui{padding:46px 42px}
  .film-grid{grid-template-columns:minmax(0,1.3fr) minmax(270px,.7fr)}
}

@media (max-width:900px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,82vw);
    background:rgba(9,11,14,.97);backdrop-filter:blur(20px);
    flex-direction:column;gap:0;padding:96px 30px 30px;margin:0;
    border-left:1px solid var(--line);transform:translateX(100%);
    transition:transform .45s var(--ease);z-index:145
  }
  .nav-links.is-open{transform:none}
  .nav-links a{font-size:17px;padding:16px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-toggle{display:flex;position:relative;z-index:146}
  .nav-cta .btn-ghost{display:none}
  .sec{padding:84px 0}
  .sec-head{margin-bottom:44px}
  .hero{min-height:auto;padding:118px 0 76px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 16px;margin-top:44px}
  .case-stats{grid-template-columns:repeat(2,1fr);gap:20px 16px}
  .hero-scroll{display:none}
  .mbar{display:flex}
  body{padding-bottom:74px}
  .toast{bottom:96px}
  .tcard,.vs-table td:first-child{width:auto}
  .tech-cards{grid-template-columns:1fr}
  .proof-quote{padding:26px 24px}
  .matcher-shell{grid-template-columns:1fr}
  .matcher-visual{min-height:360px}
  .matcher-core{width:132px;height:132px}
  .matcher-core i{font-size:48px}
  .matcher-ui{border-left:0;border-top:1px solid var(--line);padding:42px}
  .process-focus{grid-template-columns:120px 1fr}
  .process-focus-nav{grid-column:2}
  .product-dialog[open]{grid-template-columns:1fr;overflow:auto}
  .dialog-visual{min-height:300px;max-height:340px}
  .dialog-content{overflow:visible;padding:44px 38px}
  .film-grid{grid-template-columns:1fr}
  .film-tall{width:min(100%,430px);margin:0 auto}
}

@media (max-width:680px){
  .wrap{padding:0 20px}
  .value-grid,.tiers,.sec-scene .scene-grid,.steps,.info-grid,.creed,.deal-grid,
  .case-grid,.spec,.contact-cards,.ch-cards,.frow,.panel-media{grid-template-columns:1fr}
  .spec{border-radius:var(--r)}
  .hero-title{font-size:clamp(34px,10vw,52px)}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats b{font-size:26px}
  .btn{padding:13px 22px;font-size:14px}
  .hero-actions .btn{flex:1;min-width:180px}
  .tabs{width:100%;border-radius:var(--r);flex-direction:column}
  .tab{width:100%;border-radius:10px;text-align:center}
  .contact-form{padding:26px 22px}
  .accept,.other,.channels,.compare{padding:24px 20px}
  .cutaway{max-width:100%}
  .bar{grid-template-columns:100px 1fr;gap:10px}
  .bar>span{font-size:12px}
  .foot-top{grid-template-columns:1fr;gap:30px}
  .foot-bot{flex-direction:column;gap:14px}
  .br-m{display:block}
  .faq summary{padding:19px 48px 19px 20px;font-size:15px}
  .faq details>div{padding:0 20px 22px;font-size:14px}
  .vs{overflow-x:auto;padding-bottom:8px}
  .vs h4{position:sticky;left:0}
  .vs-table{min-width:680px}
  .vs-table th,.vs-table td{padding:12px 13px;font-size:13px}
  .cc-main b{font-size:26px}
  .cc-bot{grid-template-columns:96px 1fr;gap:16px;padding:18px}
  .cc-bot-copy p{font-size:12px}
  .tier-way{min-height:0}
  .product-more{grid-template-columns:1fr auto}
  .product-more i{display:none}
  .matcher-shell{border-radius:22px}
  .matcher-visual{min-height:280px}
  .matcher-signals{inset:22px}
  .matcher-ui{padding:30px 22px 34px}
  .matcher-progress{margin-bottom:32px}
  .matcher-question h3,.matcher-result h3{font-size:27px}
  .matcher-option{grid-template-columns:30px 1fr;padding:15px}
  .matcher-option i{display:none}
  .matcher-reasons{grid-template-columns:1fr}
  .matcher-actions .btn{width:100%}
  .process-focus{grid-template-columns:1fr;padding:26px 22px;gap:20px}
  .process-focus-no{min-height:54px;flex-direction:row;align-items:center;padding:0 0 16px;
    border-right:0;border-bottom:1px solid var(--line)}
  .process-focus-nav{grid-column:1}
  .product-dialog{width:calc(100vw - 20px);max-height:calc(100vh - 20px);border-radius:20px}
  .dialog-visual{min-height:240px}
  .dialog-content{padding:34px 22px}
  .dialog-metrics{grid-template-columns:1fr}
  .dialog-columns{grid-template-columns:1fr;gap:24px}
  .dialog-actions .btn{width:100%}
  .dialog-close{right:14px;top:14px}
  .film-card{border-radius:20px}
  .film-copy{padding:22px 20px}
  .film-note{grid-template-columns:1fr;gap:8px;padding:18px}
}