/* =========================================================
   ProductLoop · Design System
   ========================================================= */

:root{
  /* 品牌色 */
  --ink:#0B0D12;
  --navy:#0A1122;
  --navy-2:#131E38;
  --accent:#FF6A2B;
  --accent-2:#FF8F4D;
  --accent-soft:#FFF2EA;
  --teal:#0E9384;
  --teal-soft:#E7F6F3;
  --blue:#2F5BEA;
  --blue-soft:#EAF0FF;
  --violet:#6C4DF6;
  --amber:#F5A524;
  --amber-soft:#FFF6E5;
  --red:#E5484D;
  --red-soft:#FDECEC;

  /* 中性 */
  --paper:#FFFFFF;
  --mist:#F5F7FA;
  --mist-2:#EFF2F7;
  --line:#E4E8EF;
  --line-soft:#EFF2F6;
  --text:#0F1319;
  --body:#49525F;
  --muted:#7C8695;

  /* 尺寸 */
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --maxw:1200px;
  --nav-h:70px;

  /* 阴影 */
  --shadow-xs:0 1px 2px rgba(16,19,25,.05);
  --shadow-sm:0 2px 6px rgba(16,19,25,.05),0 8px 20px rgba(16,19,25,.05);
  --shadow:0 10px 34px rgba(16,19,25,.09),0 2px 6px rgba(16,19,25,.04);
  --shadow-lg:0 28px 70px rgba(10,17,34,.16);
  --glow:0 18px 44px rgba(255,106,43,.28);

  --ease:cubic-bezier(.22,.85,.28,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:"Inter","SF Pro Text",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--paper);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.22;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

::selection{background:var(--accent);color:#fff}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:96px 0;position:relative}
.section--tight{padding:64px 0}
.section--mist{background:var(--mist)}
.section--ink{background:var(--navy);color:#fff}
.section--ink .sec-lead{color:rgba(255,255,255,.68)}
.section--ink h2,.section--ink h3{color:#fff}

.sec-head{max-width:760px;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin-bottom:16px;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.section--ink .kicker{color:var(--accent-2)}
.sec-title{font-size:clamp(28px,3.6vw,44px);margin-bottom:18px}
.sec-lead{font-size:17px;color:var(--body);line-height:1.85}

.eyebrow{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .28s var(--ease);white-space:nowrap;line-height:1.4;
}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{background:#F55A16;transform:translateY(-2px);box-shadow:0 22px 50px rgba(255,106,43,.36)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000;transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--text);background:#fff}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(0,0,0,.25)}
.btn-outline-light{border-color:rgba(255,255,255,.32);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn-ghost.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* 文字链接箭头 */
.arrow-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--accent);
}
.arrow-link svg{width:16px;height:16px;transition:transform .25s var(--ease)}
.arrow-link:hover svg{transform:translateX(5px)}
.section--ink .arrow-link{color:var(--accent-2)}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:80;
  display:flex;align-items:center;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid transparent;
  transition:all .3s var(--ease);
}
.nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(16,19,25,.05)}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 28px;width:100%;
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.03em}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--accent),#FFB067);
  display:grid;place-items:center;box-shadow:0 6px 16px rgba(255,106,43,.35);
}
.brand-mark svg{width:19px;height:19px;color:#fff}
.brand small{
  display:block;font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);font-weight:600;line-height:1;margin-top:3px;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 14px;font-size:14.5px;font-weight:500;color:var(--body);
  border-radius:9px;transition:all .22s var(--ease);
}
.nav-links a:hover{color:var(--text);background:var(--mist)}
.nav-links a.active{color:var(--accent);font-weight:600;background:var(--accent-soft)}
.nav-cta{display:flex;align-items:center;gap:12px;margin-left:14px}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);transition:.3s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:var(--nav-h) 0 auto 0;z-index:79;
  background:#fff;border-bottom:1px solid var(--line);
  padding:14px 28px 24px;
  display:none;flex-direction:column;gap:4px;
  box-shadow:var(--shadow);
  max-height:calc(100vh - var(--nav-h));overflow:auto;
}
.drawer.is-open{display:flex;animation:dropIn .3s var(--ease)}
.drawer a{padding:13px 4px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line-soft)}
.drawer a.active{color:var(--accent)}
.drawer .btn{margin-top:16px}
@keyframes dropIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ---------- 首页 Hero ---------- */
.hero{
  position:relative;padding:150px 0 100px;overflow:hidden;
  background:
    radial-gradient(900px 480px at 88% 8%,rgba(255,106,43,.13),transparent 62%),
    radial-gradient(760px 420px at 4% 92%,rgba(47,91,234,.10),transparent 60%),
    linear-gradient(180deg,#fff 0%,var(--mist) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 30%,#000 20%,transparent 100%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 30%,#000 20%,transparent 100%);
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;
  gap:56px;align-items:center;
}
.hero h1{font-size:clamp(38px,5.2vw,62px);letter-spacing:-.035em;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--accent);position:relative;white-space:nowrap}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.28em;
  background:linear-gradient(90deg,rgba(255,106,43,.26),rgba(255,106,43,0));z-index:-1;border-radius:4px;
}
.hero-sub{font-size:19px;color:var(--body);max-width:560px;margin-bottom:16px;line-height:1.8}
.hero-note{font-size:14.5px;color:var(--muted);max-width:520px;margin-bottom:34px}
.hero .btn-row{margin-bottom:40px}

.trust{display:flex;flex-wrap:wrap;gap:36px;padding-top:30px;border-top:1px solid var(--line)}
.trust-item strong{display:block;font-size:29px;font-weight:800;letter-spacing:-.03em;line-height:1.2}
.trust-item span{font-size:13px;color:var(--muted)}
.trust-item strong i{font-style:normal;color:var(--accent)}

/* Hero 卡片（浮动界面） */
.hero-visual{position:relative}
.float-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden;
  animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.fc-bar{
  display:flex;align-items:center;gap:7px;padding:13px 16px;
  background:var(--mist);border-bottom:1px solid var(--line);
}
.fc-bar i{width:10px;height:10px;border-radius:50%;background:#D7DCE4;display:block}
.fc-bar i:nth-child(1){background:#FF5F57}
.fc-bar i:nth-child(2){background:#FEBC2E}
.fc-bar i:nth-child(3){background:#28C840}
.fc-bar span{margin-left:8px;font-size:12px;color:var(--muted);font-weight:600}
.fc-body{padding:20px}
.fc-title{font-size:14px;font-weight:700;margin-bottom:4px}
.fc-meta{font-size:12px;color:var(--muted);margin-bottom:16px}
.fc-row{display:flex;align-items:center;gap:10px;margin-bottom:11px;font-size:13px}
.fc-row b{margin-left:auto;font-size:13px;font-weight:700}
.fc-bar-track{height:7px;border-radius:99px;background:var(--mist-2);overflow:hidden;flex:1}
.fc-bar-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--amber));width:0;animation:grow 2.4s var(--ease) forwards}
.fc-bar-fill.blue{background:linear-gradient(90deg,var(--blue),var(--violet))}
.fc-bar-fill.teal{background:linear-gradient(90deg,var(--teal),#57C7B5)}
@keyframes grow{from{width:0}to{width:var(--w,70%)}}
.fc-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line-soft)}
.chip{
  font-size:12px;padding:5px 11px;border-radius:99px;font-weight:600;
  background:var(--accent-soft);color:#C4470F;
}
.chip.blue{background:var(--blue-soft);color:#2647C4}
.chip.teal{background:var(--teal-soft);color:#0A7568}
.chip.gray{background:var(--mist-2);color:var(--body)}
.scan{
  position:absolute;left:0;right:0;height:2px;z-index:3;
  background:linear-gradient(90deg,transparent,rgba(255,106,43,.9),transparent);
  animation:scan 3.6s linear infinite;
}
@keyframes scan{0%{top:12px;opacity:0}12%{opacity:1}88%{opacity:1}100%{top:calc(100% - 12px);opacity:0}}
.badge-float{
  position:absolute;bottom:-22px;left:-26px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow);display:flex;align-items:center;gap:11px;
}
.badge-float .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 5px var(--teal-soft)}
.badge-float b{display:block;font-size:15px;line-height:1.3}
.badge-float span{font-size:12px;color:var(--muted)}

/* ---------- 通用卡片 ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-5{grid-template-columns:repeat(5,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:all .35s var(--ease);position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#D6DCE6}
.card-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);margin-bottom:20px;
}
.card-ico svg{width:22px;height:22px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--body);line-height:1.8}
.card-num{
  position:absolute;top:22px;right:26px;font-size:44px;font-weight:800;
  color:var(--mist-2);letter-spacing:-.05em;line-height:1;
}
.card-link{margin-top:16px;font-size:14px;font-weight:600;color:var(--accent);display:inline-flex;gap:6px;align-items:center}
.card-link svg{width:15px;height:15px}

.card--soft{background:var(--mist);border-color:transparent}
.card--soft:hover{background:#fff;border-color:var(--line)}
.section--ink .card{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.12)}
.section--ink .card:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24)}
.section--ink .card p{color:rgba(255,255,255,.66)}
.section--ink .card-num{color:rgba(255,255,255,.07)}

/* ---------- 流程对比 ---------- */
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:stretch}
.vs-col{border-radius:var(--radius);padding:32px;border:1px solid var(--line)}
.vs-col.old{background:var(--mist)}
.vs-col.new{background:linear-gradient(160deg,#0A1122,#1B2A4E);color:#fff;border-color:transparent;box-shadow:var(--shadow-lg)}
.vs-col h4{font-size:15px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:20px;color:var(--muted)}
.vs-col.new h4{color:var(--accent-2)}
.vs-col ul li{
  display:flex;align-items:center;gap:12px;padding:11px 0;font-size:15px;
  border-bottom:1px dashed var(--line);
}
.vs-col.new ul li{border-bottom-color:rgba(255,255,255,.14)}
.vs-col ul li:last-child{border-bottom:0}
.vs-col .ico{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;flex:none;font-size:13px;font-weight:700}
.vs-col.old .ico{background:#FDECEC;color:var(--red)}
.vs-col.new .ico{background:rgba(255,106,43,.18);color:var(--accent-2)}
.vs-arrow{
  display:grid;place-items:center;width:56px;height:56px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  align-self:center;color:var(--accent);
}
.vs-arrow svg{width:22px;height:22px}

/* ---------- 引擎步骤 ---------- */
.engine{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.engine-step{
  position:relative;padding:30px 26px;background:#fff;border:1px solid var(--line);
  transition:all .35s var(--ease);
}
.engine-step:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.engine-step:last-child{border-radius:0 var(--radius) var(--radius) 0;border-right:1px solid var(--line)}
.engine-step+.engine-step{border-left:0}
.engine-step:hover{background:var(--mist);z-index:2}
.engine-step .step-no{
  font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--accent);margin-bottom:14px;display:block;
}
.engine-step h3{font-size:18px;margin-bottom:10px}
.engine-step p{font-size:14px;color:var(--body);line-height:1.75}
.engine-step ul{margin-top:16px}
.engine-step ul li{font-size:13px;color:var(--muted);padding:5px 0 5px 16px;position:relative}
.engine-step ul li::before{
  content:"";position:absolute;left:0;top:13px;width:5px;height:5px;border-radius:50%;background:var(--accent);
}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:#fff;padding:32px 26px}
.section--ink .stat{background:rgba(255,255,255,.04)}
.stat b{display:block;font-size:38px;font-weight:800;letter-spacing:-.04em;line-height:1.15;margin-bottom:6px}
.stat b i{font-style:normal;color:var(--accent);font-size:.6em;margin-left:2px}
.section--ink .stat b i{color:var(--accent-2)}
.stat span{font-size:14px;color:var(--body)}
.section--ink .stat span{color:rgba(255,255,255,.62)}
.stat small{display:block;margin-top:8px;font-size:12px;color:var(--muted)}

/* ---------- 案例 Before/After ---------- */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:grid;grid-template-columns:1fr 1fr;box-shadow:var(--shadow-sm);
}
.case-side{padding:26px}
.case-side.before{background:var(--mist);border-right:1px solid var(--line)}
.case-tag{
  display:inline-block;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  padding:4px 10px;border-radius:6px;margin-bottom:14px;
}
.case-tag.b{background:#FDECEC;color:#B4232A}
.case-tag.a{background:var(--teal-soft);color:#0A7568}
.case-side h4{font-size:16px;margin-bottom:12px}
.case-side ul li{font-size:13.5px;color:var(--body);padding:6px 0;display:flex;gap:9px;line-height:1.7}
.case-side ul li::before{content:"−";color:var(--red);font-weight:700}
.case-side.after ul li::before{content:"＋";color:var(--teal)}
.case-photo{
  height:130px;border-radius:12px;margin-bottom:16px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--mist-2),#DDE3EC);color:var(--muted);font-size:12px;position:relative;overflow:hidden;
}
.case-photo.after{background:linear-gradient(135deg,var(--accent-soft),#FFE0CB);color:#B8471A}
.case-foot{
  padding:18px 26px;border-top:1px solid var(--line);background:var(--mist);
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;grid-column:1/-1;
}
.case-foot .k{font-size:12px;color:var(--muted)}
.case-foot .v{font-size:15px;font-weight:700;color:var(--accent)}

/* ---------- 计时/交互演示 ---------- */
.demo-panel{
  background:var(--navy);border-radius:var(--radius-lg);padding:34px;color:#fff;box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.demo-panel::before{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.22),transparent 68%);
}
.demo-input{
  display:flex;gap:10px;flex-wrap:wrap;position:relative;z-index:2;
}
.demo-input input{
  flex:1;min-width:240px;padding:14px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);color:#fff;font-size:15px;outline:none;font-family:inherit;
  transition:border-color .25s;
}
.demo-input input::placeholder{color:rgba(255,255,255,.42)}
.demo-input input:focus{border-color:var(--accent)}
.demo-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px;position:relative;z-index:2}
.dstep{
  padding:14px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.5);transition:all .4s var(--ease);
}
.dstep b{display:block;font-size:12px;letter-spacing:.08em;margin-bottom:5px;color:rgba(255,255,255,.4)}
.dstep.active{background:rgba(255,106,43,.18);border-color:rgba(255,106,43,.5);color:#fff;transform:translateY(-3px)}
.dstep.done{color:rgba(255,255,255,.78);border-color:rgba(14,147,132,.45)}
.dstep.active.done b,.dstep.done b{color:var(--accent-2)}
.demo-out{
  margin-top:24px;padding:22px;border-radius:14px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);position:relative;z-index:2;min-height:110px;
}
.demo-out .line{
  display:flex;gap:12px;align-items:center;font-size:14px;color:rgba(255,255,255,.82);
  padding:8px 0;opacity:0;transform:translateY(6px);animation:lineIn .5s var(--ease) forwards;
}
@keyframes lineIn{to{opacity:1;transform:none}}
.demo-out .line .k{width:96px;flex:none;color:rgba(255,255,255,.45);font-size:13px}
.demo-out .line .v{font-weight:600}
.demo-out .line .v em{font-style:normal;color:var(--accent-2)}
.demo-hint{font-size:12.5px;color:rgba(255,255,255,.42);margin-top:14px}

/* ---------- 标签页 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:30px;border-bottom:1px solid var(--line);padding-bottom:0}
.tab{
  padding:11px 18px;border-radius:10px 10px 0 0;font-size:14.5px;font-weight:600;color:var(--body);
  cursor:pointer;border:1px solid transparent;border-bottom:none;background:none;
  transition:all .22s var(--ease);margin-bottom:-1px;
}
.tab:hover{color:var(--text)}
.tab.active{color:var(--accent);border-color:var(--line);border-bottom-color:#fff;background:#fff}
.section--ink .tab{color:rgba(255,255,255,.6)}
.section--ink .tab.active{color:var(--accent-2);border-color:rgba(255,255,255,.14);background:rgba(255,255,255,.06)}
.panel{display:none;animation:fadeUp .45s var(--ease)}
.panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- 折叠面板 ---------- */
.acc{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.acc-item+.acc-item{border-top:1px solid var(--line)}
.acc-head{
  width:100%;display:flex;align-items:center;gap:18px;padding:22px 26px;cursor:pointer;
  background:none;border:0;text-align:left;font-size:16.5px;font-weight:700;color:var(--text);
  transition:background .25s;
}
.acc-head:hover{background:var(--mist)}
.acc-idx{
  width:28px;height:28px;border-radius:8px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-size:13px;font-weight:800;flex:none;
}
.acc-head .q{flex:1}
.acc-head .plus{
  width:24px;height:24px;flex:none;position:relative;
}
.acc-head .plus::before,.acc-head .plus::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;transition:.3s var(--ease);
}
.acc-head .plus::before{left:2px;right:2px;top:11px;height:2px}
.acc-head .plus::after{top:2px;bottom:2px;left:11px;width:2px}
.acc-item.open .acc-head .plus::after{transform:rotate(90deg);opacity:0}
.acc-item.open .acc-head{background:var(--mist)}
.acc-body{display:none;padding:0 26px 26px 72px}
.acc-item.open .acc-body{display:block;animation:fadeUp .4s var(--ease)}
.acc-body .row{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:9px 0;font-size:14.5px;align-items:start}
.acc-body .row .lb{color:var(--muted);font-size:13px;font-weight:600;padding-top:2px}
.acc-body .row .tx{color:var(--body);line-height:1.8}
.acc-body .row .tx b{color:var(--text)}
.pill{display:inline-block;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:700;background:var(--teal-soft);color:#0A7568;margin-right:6px}
.pill.o{background:var(--accent-soft);color:#C4470F}
.pill.r{background:var(--red-soft);color:#B4232A}

/* ---------- 表格 ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:auto;background:#fff}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line-soft)}
th{background:var(--mist);font-size:13px;font-weight:700;color:var(--body);letter-spacing:.02em;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#FAFBFD}
td.num{font-variant-numeric:tabular-nums;font-weight:600}
td .up{color:var(--accent);font-weight:700}
.hl-row{background:var(--accent-soft)!important}
.hl-row td{font-weight:700}

/* ---------- 时间轴 / 路线图 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--accent),rgba(47,91,234,.35),transparent);
}
.tl-item{position:relative;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);box-shadow:0 0 0 4px var(--accent-soft);
}
.tl-item .ph{font-size:12.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.tl-item h4{font-size:18px;margin-bottom:8px}
.tl-item p{font-size:14.5px;color:var(--body);line-height:1.8;max-width:720px}
.tl-item ul{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.section--ink .timeline::before{background:linear-gradient(180deg,var(--accent-2),rgba(255,255,255,.15),transparent)}
.section--ink .tl-item::before{background:var(--navy);border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(255,143,77,.18)}
.section--ink .tl-item p{color:rgba(255,255,255,.66)}
.section--ink .tl-item .ph{color:var(--accent-2)}

/* ---------- 图集 / 截图 ---------- */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.shot{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  cursor:zoom-in;transition:all .35s var(--ease);box-shadow:var(--shadow-xs);
}
.shot:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#D6DCE6}
.shot-cap{padding:18px 22px 22px;border-top:1px solid var(--line)}
.shot-cap h4{font-size:16px;margin-bottom:6px}
.shot-cap p{font-size:13.5px;color:var(--body);line-height:1.7}
.shot-cap .tags{margin-top:12px;display:flex;gap:6px;flex-wrap:wrap}

/* 模拟界面 */
.ui{
  background:var(--mist);border-bottom:1px solid var(--line);
  font-size:12px;color:var(--text);
}
.ui-top{
  display:flex;align-items:center;gap:8px;padding:9px 14px;background:#fff;border-bottom:1px solid var(--line);
}
.ui-top .dots{display:flex;gap:5px}
.ui-top .dots i{width:8px;height:8px;border-radius:50%;background:#DDE2E9;display:block}
.ui-top .dots i:nth-child(1){background:#FF5F57}
.ui-top .dots i:nth-child(2){background:#FEBC2E}
.ui-top .dots i:nth-child(3){background:#28C840}
.ui-top .url{
  flex:1;margin-left:8px;height:20px;border-radius:6px;background:var(--mist-2);
  display:flex;align-items:center;padding:0 10px;color:var(--muted);font-size:10.5px;overflow:hidden;white-space:nowrap;
}
.ui-body{display:grid;grid-template-columns:132px 1fr;min-height:250px}
.ui-side{background:#fff;border-right:1px solid var(--line);padding:14px 10px}
.ui-side .lg{font-weight:800;font-size:12px;padding:6px 8px;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.ui-side .lg i{width:14px;height:14px;border-radius:4px;background:linear-gradient(135deg,var(--accent),#FFB067);display:block}
.ui-side a{display:flex;align-items:center;gap:7px;padding:7px 8px;border-radius:7px;color:var(--body);font-size:11.5px}
.ui-side a.on{background:var(--accent-soft);color:#C4470F;font-weight:700}
.ui-side a i{width:6px;height:6px;border-radius:2px;background:#D3D9E2;flex:none}
.ui-side a.on i{background:var(--accent)}
.ui-main{padding:14px;background:var(--mist)}
.ui-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.ui-h b{font-size:13px}
.ui-h .uibtn{font-size:10.5px;padding:4px 10px;border-radius:6px;background:var(--accent);color:#fff;font-weight:700}
.ui-h .uibtn.g{background:#fff;color:var(--body);border:1px solid var(--line)}
.ui-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-bottom:12px}
.ui-c{background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px}
.ui-c .t{font-size:10px;color:var(--muted);margin-bottom:5px}
.ui-c .n{font-size:16px;font-weight:800;letter-spacing:-.02em}
.ui-c .n small{font-size:9.5px;font-weight:600;color:var(--teal);margin-left:3px}
.ui-c .n small.d{color:var(--red)}
.ui-box{background:#fff;border:1px solid var(--line);border-radius:9px;padding:12px;margin-bottom:10px}
.ui-box .bt{font-size:11.5px;font-weight:700;margin-bottom:9px;display:flex;justify-content:space-between}
.ui-box .bt span{font-size:10px;color:var(--muted);font-weight:500}
.spark{display:flex;align-items:flex-end;gap:3px;height:52px}
.spark i{flex:1;background:linear-gradient(180deg,var(--accent),rgba(255,106,43,.25));border-radius:2px 2px 0 0;display:block}
.spark.blue i{background:linear-gradient(180deg,var(--blue),rgba(47,91,234,.22))}
.spark.teal i{background:linear-gradient(180deg,var(--teal),rgba(14,147,132,.22))}
.bars{display:flex;flex-direction:column;gap:8px}
.bars .b{display:flex;align-items:center;gap:8px;font-size:10.5px}
.bars .b .lab{width:52px;color:var(--body);flex:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bars .b .tr{flex:1;height:7px;background:var(--mist-2);border-radius:99px;overflow:hidden}
.bars .b .fi{height:100%;border-radius:99px;background:var(--accent)}
.bars .b:nth-child(2) .fi{background:var(--blue)}
.bars .b:nth-child(3) .fi{background:var(--teal)}
.bars .b:nth-child(4) .fi{background:var(--amber)}
.bars .b:nth-child(5) .fi{background:var(--violet)}
.bars .b .pc{width:30px;text-align:right;font-weight:700;flex:none}
.rev{display:flex;flex-direction:column;gap:8px}
.rev .r{background:var(--mist);border-radius:7px;padding:8px 9px;font-size:10.5px;line-height:1.6;border-left:2.5px solid var(--muted)}
.rev .r.neg{border-left-color:var(--red);background:var(--red-soft)}
.rev .r.pos{border-left-color:var(--teal);background:var(--teal-soft)}
.rev .r b{display:block;font-size:9.5px;color:var(--muted);margin-bottom:2px;font-weight:600}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.polar{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.polar .p{background:var(--mist);border-radius:7px;padding:8px;text-align:center}
.polar .p b{display:block;font-size:14px;font-weight:800}
.polar .p span{font-size:9px;color:var(--muted)}
.polar .p.hot{background:var(--accent-soft);color:#C4470F}

/* 灯箱 */
.lightbox{
  position:fixed;inset:0;z-index:120;background:rgba(8,10,16,.86);
  backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:32px;
}
.lightbox.on{display:flex;animation:fadeUp .3s var(--ease)}
.lb-inner{max-width:1120px;width:100%;max-height:88vh;overflow:auto;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.lb-close{
  position:absolute;top:22px;right:26px;width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#fff;
  cursor:pointer;display:grid;place-items:center;font-size:20px;line-height:1;
}
.lb-close:hover{background:rgba(255,255,255,.26)}
.lb-cap{padding:18px 26px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.lb-cap h4{font-size:16px;margin-bottom:4px}
.lb-cap p{font-size:13px;color:var(--body)}

/* ---------- 视频播放器 ---------- */
.player-shell{display:grid;grid-template-columns:1fr 320px;gap:26px;align-items:start}
.player{
  background:#05070C;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative;
}
.stage{position:relative;aspect-ratio:16/9;background:#0A0E16;overflow:hidden}
.scene{position:absolute;inset:0;opacity:0;transition:opacity .5s var(--ease);padding:3.2% 4%;display:flex;flex-direction:column;gap:10px}
.scene.on{opacity:1}
.scene .sc-tag{
  align-self:flex-start;font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  background:rgba(255,106,43,.16);color:var(--accent-2);padding:5px 11px;border-radius:6px;border:1px solid rgba(255,143,77,.3);
}
.scene .sc-t{color:#fff;font-size:clamp(15px,2vw,25px);font-weight:800;letter-spacing:-.02em;line-height:1.3}
.scene .sc-s{color:rgba(255,255,255,.6);font-size:clamp(10px,1.1vw,13px);line-height:1.7;max-width:70%}
.scene .sc-panel{
  flex:1;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;
  padding:14px;display:flex;flex-direction:column;gap:9px;overflow:hidden;
}
.scene .sc-row{display:flex;align-items:center;gap:10px;font-size:clamp(9px,1vw,12px);color:rgba(255,255,255,.75)}
.scene .sc-row .lab{width:66px;flex:none;color:rgba(255,255,255,.42)}
.scene .sc-tr{flex:1;height:6px;background:rgba(255,255,255,.1);border-radius:99px;overflow:hidden}
.scene .sc-fi{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--amber));width:0;transition:width 1.6s var(--ease)}
.scene.on .sc-fi{width:var(--w,70%)}
.scene .sc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.scene .sc-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);border-radius:9px;padding:10px}
.scene .sc-card b{display:block;color:#fff;font-size:clamp(11px,1.3vw,15px);font-weight:800}
.scene .sc-card span{font-size:clamp(8px,.9vw,10px);color:rgba(255,255,255,.45)}
.scene .sc-cursor{
  position:absolute;width:16px;height:16px;border-radius:50%;background:rgba(255,106,43,.9);
  box-shadow:0 0 0 6px rgba(255,106,43,.22);animation:cursorMove 4s ease-in-out infinite;
}
@keyframes cursorMove{0%{left:22%;top:62%}35%{left:52%;top:44%}70%{left:70%;top:70%}100%{left:22%;top:62%}}

.play-overlay{
  position:absolute;inset:0;display:grid;place-items:center;cursor:pointer;
  background:linear-gradient(180deg,rgba(5,7,12,.35),rgba(5,7,12,.75));transition:opacity .4s;
}
.play-overlay.hide{opacity:0;pointer-events:none}
.play-btn{
  width:78px;height:78px;border-radius:50%;background:var(--accent);display:grid;place-items:center;
  box-shadow:0 0 0 14px rgba(255,106,43,.16),0 18px 40px rgba(0,0,0,.4);transition:transform .3s var(--ease);
}
.play-overlay:hover .play-btn{transform:scale(1.07)}
.play-btn svg{width:26px;height:26px;color:#fff;margin-left:4px}
.poster-meta{position:absolute;left:0;right:0;bottom:0;padding:22px 26px;display:flex;justify-content:space-between;align-items:flex-end;gap:16px}
.poster-meta h3{color:#fff;font-size:clamp(15px,1.8vw,22px);margin-bottom:6px}
.poster-meta p{color:rgba(255,255,255,.6);font-size:12px}

.ctrl{display:flex;align-items:center;gap:14px;padding:12px 18px;background:#05070C;border-top:1px solid rgba(255,255,255,.08)}
.ctrl button{
  background:none;border:0;color:#fff;cursor:pointer;display:grid;place-items:center;
  width:32px;height:32px;border-radius:8px;transition:background .2s;
}
.ctrl button:hover{background:rgba(255,255,255,.1)}
.ctrl button svg{width:17px;height:17px}
.track{
  flex:1;height:5px;background:rgba(255,255,255,.16);border-radius:99px;position:relative;cursor:pointer;
}
.track .fill{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--accent);border-radius:99px}
.track .mk{position:absolute;top:-3px;width:2px;height:11px;background:rgba(255,255,255,.5);border-radius:2px}
.track:hover .fill::after{
  content:"";position:absolute;right:-6px;top:-2.5px;width:10px;height:10px;border-radius:50%;background:#fff;
}
.time{font-size:12px;color:rgba(255,255,255,.7);font-variant-numeric:tabular-nums;flex:none}

.chapters{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.chapters .ch-h{padding:15px 20px;background:var(--mist);border-bottom:1px solid var(--line);font-size:13px;font-weight:700}
.ch-item{
  display:flex;gap:12px;padding:13px 20px;cursor:pointer;border-bottom:1px solid var(--line-soft);
  transition:background .22s;align-items:flex-start;
}
.ch-item:last-child{border-bottom:0}
.ch-item:hover{background:var(--mist)}
.ch-item.on{background:var(--accent-soft)}
.ch-item .tm{font-size:12px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;flex:none;padding-top:2px}
.ch-item .tx b{display:block;font-size:13.5px;font-weight:700;margin-bottom:2px}
.ch-item .tx span{font-size:12px;color:var(--muted);line-height:1.6}
.transcript{margin-top:22px;border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.transcript h4{font-size:14px;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center}
.transcript h4 span{font-size:12px;color:var(--muted);font-weight:500}
.tline{padding:9px 12px;border-radius:10px;font-size:14px;color:var(--body);line-height:1.8;transition:all .3s;border-left:3px solid transparent}
.tline.on{background:var(--accent-soft);color:var(--text);border-left-color:var(--accent);font-weight:500}
.tline b{color:var(--muted);font-weight:600;margin-right:8px;font-variant-numeric:tabular-nums;font-size:12px}

/* ---------- 表单 ---------- */
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px;box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--text)}
.field label i{color:var(--accent);font-style:normal}
.field input,.field select,.field textarea{
  padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:15px;font-family:inherit;color:var(--text);background:#fff;outline:none;
  transition:all .25s var(--ease);width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);box-shadow:0 0 0 4px rgba(255,106,43,.12);
}
.field textarea{resize:vertical;min-height:110px}
.field .err{font-size:12.5px;color:var(--red);display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--red);background:#FFFBFB}
.field.invalid .err{display:block}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:13px;color:var(--body);line-height:1.7}
.consent input{margin-top:3px;width:16px;height:16px;accent-color:var(--accent);flex:none}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-ok{
  display:none;padding:26px;border-radius:var(--radius);background:var(--teal-soft);
  border:1px solid rgba(14,147,132,.3);text-align:center;
}
.form-ok.show{display:block;animation:fadeUp .45s var(--ease)}
.form-ok .ok-ico{
  width:54px;height:54px;border-radius:50%;background:var(--teal);color:#fff;display:grid;place-items:center;
  margin:0 auto 14px;
}
.form-ok .ok-ico svg{width:26px;height:26px}
.form-ok h4{font-size:19px;margin-bottom:8px}
.form-ok p{font-size:14px;color:var(--body)}
.form-ok .again{margin-top:16px}

.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,90px);z-index:200;
  background:var(--ink);color:#fff;padding:14px 26px;border-radius:999px;font-size:14.5px;font-weight:500;
  box-shadow:var(--shadow-lg);opacity:0;transition:all .4s var(--ease);display:flex;gap:10px;align-items:center;
}
.toast.on{transform:translate(-50%,0);opacity:1}

/* ---------- 联系卡片 ---------- */
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  display:flex;gap:18px;align-items:flex-start;transition:all .3s var(--ease);
}
.contact-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.cc-ico{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:none}
.cc-ico svg{width:20px;height:20px}
.cc-ico.blue{background:var(--blue-soft);color:var(--blue)}
.cc-ico.teal{background:var(--teal-soft);color:var(--teal)}
.cc-ico.violet{background:#F1EDFF;color:var(--violet)}
.contact-card .k{font-size:12.5px;color:var(--muted);margin-bottom:4px}
.contact-card .v{font-size:16px;font-weight:700;letter-spacing:-.01em;word-break:break-all}
.contact-card .s{font-size:13px;color:var(--body);margin-top:6px;line-height:1.7}

.qr-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center;
}
.qr-box svg{width:150px;height:150px;margin:0 auto 12px;display:block;image-rendering:pixelated}
.qr-box b{display:block;font-size:15px;margin-bottom:5px}
.qr-box span{font-size:12.5px;color:var(--muted);line-height:1.7}

.map-box{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--mist);
  height:100%;min-height:280px;position:relative;
}
.map-box .mtx{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(16,19,25,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(16,19,25,.06) 1px,transparent 1px);
  background-size:38px 38px;
}
.map-box .road{position:absolute;background:#fff;box-shadow:0 0 0 1px var(--line)}
.map-pin{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-100%);z-index:3;text-align:center;
}
.map-pin .pn{
  width:42px;height:42px;border-radius:50% 50% 50% 0;transform:rotate(-45deg);
  background:var(--accent);display:grid;place-items:center;box-shadow:0 10px 22px rgba(255,106,43,.4);margin:0 auto;
}
.map-pin .pn i{width:12px;height:12px;background:#fff;border-radius:50%;display:block;transform:rotate(45deg)}
.map-pin .lb{background:#fff;border:1px solid var(--line);border-radius:9px;padding:7px 12px;font-size:12px;font-weight:700;margin-top:8px;box-shadow:var(--shadow-sm);white-space:nowrap}
.map-box .mtag{position:absolute;left:18px;bottom:16px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 13px;font-size:12px;font-weight:600;box-shadow:var(--shadow-sm)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:linear-gradient(135deg,#0A1122 0%,#1A2748 55%,#0A1122 100%);
  border-radius:var(--radius-lg);padding:58px 56px;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.28),transparent 70%);
}
.cta-band::after{
  content:"";position:absolute;width:380px;height:380px;left:-140px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,91,234,.24),transparent 70%);
}
.cta-band .inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr auto;gap:36px;align-items:center}
.cta-band h2{font-size:clamp(26px,3.2vw,38px);margin-bottom:14px;color:#fff}
.cta-band p{color:rgba(255,255,255,.7);font-size:16px;max-width:620px}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#fff;padding:76px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer .brand{color:#fff;margin-bottom:18px}
.footer .brand small{color:rgba(255,255,255,.42)}
.foot-about{font-size:14px;color:rgba(255,255,255,.55);line-height:1.85;max-width:340px}
.foot-col h5{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.42);margin-bottom:18px;font-weight:700}
.foot-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .22s}
.foot-col a:hover{color:var(--accent-2)}
.foot-bottom{
  padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.42);
}
.foot-bottom .links{display:flex;gap:22px;flex-wrap:wrap}
.foot-bottom a:hover{color:#fff}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
.reveal.d5{transition-delay:.4s}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- 页面头部（内页） ---------- */
.page-head{
  position:relative;padding:132px 0 72px;overflow:hidden;
  background:linear-gradient(150deg,#0A1122 0%,#16213F 60%,#0A1122 100%);color:#fff;
}
.page-head::before{
  content:"";position:absolute;width:600px;height:600px;right:-180px;top:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.22),transparent 68%);
}
.page-head::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(60% 70% at 60% 20%,#000,transparent 100%);
  -webkit-mask-image:radial-gradient(60% 70% at 60% 20%,#000,transparent 100%);
}
.page-head .wrap{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.5);margin-bottom:20px}
.crumb a:hover{color:#fff}
.crumb svg{width:13px;height:13px;opacity:.5}
.page-head h1{font-size:clamp(32px,4.4vw,52px);margin-bottom:18px;letter-spacing:-.035em}
.page-head .lead{font-size:18px;color:rgba(255,255,255,.72);max-width:680px;line-height:1.85}
.page-head .btn-row{margin-top:32px}
.head-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}
.head-tags span{
  font-size:12.5px;padding:6px 13px;border-radius:99px;font-weight:600;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.8);
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:540px}
  .engine{grid-template-columns:repeat(2,1fr)}
  .engine-step:nth-child(1){border-radius:var(--radius) 0 0 0}
  .engine-step:nth-child(2){border-radius:0 var(--radius) 0 0;border-right:1px solid var(--line)}
  .engine-step:nth-child(3){border-radius:0 0 0 var(--radius);border-left:1px solid var(--line);border-top:0}
  .engine-step:nth-child(4){border-radius:0 0 var(--radius) 0;border-top:0}
  .g-4,.g-5{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .player-shell{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr}
  .vs-arrow{transform:rotate(90deg);margin:0 auto}
}
@media (max-width:860px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .section{padding:70px 0}
  .g-3,.g-4,.g-5,.shots,.form-grid{grid-template-columns:1fr}
  .demo-steps{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:40px 28px}
  .cta-band .inner{grid-template-columns:1fr;text-align:left}
  .ui-body{grid-template-columns:1fr}
  .ui-side{display:none}
  .case-card{grid-template-columns:1fr}
  .case-side.before{border-right:0;border-bottom:1px solid var(--line)}
  .badge-float{left:10px;bottom:-16px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .hero{padding:118px 0 72px}
  .stats{grid-template-columns:1fr}
  .engine{grid-template-columns:1fr}
  .engine-step{border-radius:var(--radius)!important;border-left:1px solid var(--line)!important;border-right:1px solid var(--line)!important}
  .engine-step+.engine-step{border-top:0}
  .trust{gap:22px}
  .trust-item strong{font-size:24px}
  .form-card{padding:24px}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .acc-body{padding-left:26px}
  .acc-body .row{grid-template-columns:1fr;gap:4px}
  .ui-cards{grid-template-columns:repeat(2,1fr)}
  .scene .sc-grid{grid-template-columns:1fr}
}

/* =========================================================
   V5.2 · 商业定位校正版组件
   ========================================================= */

/* ---------- 品牌层级 ---------- */
.brand-stack{display:block}
.bs-cn{font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--accent)}
.bs-en{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:5px}
.bs-method{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13.5px;color:var(--body);line-height:1.75;
}
.bs-method b{color:var(--text);font-weight:700}
.section--ink .bs-cn{color:var(--accent-2)}
.section--ink .bs-en{color:rgba(255,255,255,.45)}
.section--ink .bs-method{border-top-color:rgba(255,255,255,.14);color:rgba(255,255,255,.66)}
.section--ink .bs-method b{color:#fff}
.bs-big .bs-cn{font-size:20px}
.bs-big .bs-en{font-size:13.5px}

/* ---------- 机会推理链（横向） ---------- */
.chain{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.chain-node{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;
  transition:all .32s var(--ease);position:relative;
}
.chain-node:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow)}
.chain-node .cn-n{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--accent);margin-bottom:11px}
.chain-node h4{font-size:16.5px;margin-bottom:9px}
.chain-node p{font-size:13.5px;color:var(--body);line-height:1.8}
.chain-node .cn-out{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-size:12.5px;color:var(--muted);
}
.chain-node .cn-out b{color:var(--text);font-weight:700}
.section--ink .chain-node{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.13)}
.section--ink .chain-node:hover{border-color:rgba(255,143,77,.6)}
.section--ink .chain-node h4{color:#fff}
.section--ink .chain-node p{color:rgba(255,255,255,.62)}
.section--ink .chain-node .cn-out{border-top-color:rgba(255,255,255,.14);color:rgba(255,255,255,.5)}
.section--ink .chain-node .cn-out b{color:#fff}

/* ---------- 机会推理链（纵向 / 首页 Hero） ---------- */
.chain-v{display:flex;flex-direction:column;gap:0}
.cv-item{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-bottom:1px dashed rgba(0,0,0,.08)}
.cv-item:last-child{border-bottom:0}
.cv-item .cv-i{
  width:26px;height:26px;border-radius:8px;flex:none;display:grid;place-items:center;
  font-size:12px;font-weight:800;background:var(--mist-2);color:var(--body);
}
.cv-item.done .cv-i{background:var(--accent-soft);color:var(--accent)}
.cv-item.final .cv-i{background:var(--accent);color:#fff}
.cv-item .cv-t{font-size:14px;font-weight:700;line-height:1.5}
.cv-item .cv-s{font-size:13px;color:var(--body);line-height:1.7;margin-top:3px}
.cv-item.final .cv-s{color:var(--text);font-weight:600}

/* ---------- 判断卡 ---------- */
.verdict{
  border-radius:var(--radius-lg);padding:26px;color:#fff;
  background:linear-gradient(160deg,#0A1122 0%,#1B2A4E 100%);
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.verdict::before{
  content:"";position:absolute;width:320px;height:320px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.24),transparent 70%);
}
.verdict .v-in{position:relative;z-index:2}
.verdict .v-h{font-size:11.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:12px}
.verdict .v-v{font-size:27px;font-weight:800;letter-spacing:-.03em;margin-bottom:12px;line-height:1.3}
.verdict .v-v small{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.55);margin-top:8px;letter-spacing:0}
.verdict .v-p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.85}
.verdict .v-m{
  margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.13);
  display:flex;gap:26px;flex-wrap:wrap;
}
.verdict .v-m div b{display:block;font-size:19px;font-weight:800;letter-spacing:-.02em}
.verdict .v-m div span{font-size:12px;color:rgba(255,255,255,.5)}

/* ---------- 消费者证据 ---------- */
.evid{
  border-left:3px solid var(--red);background:var(--red-soft);
  border-radius:0 10px 10px 0;padding:13px 17px;margin-bottom:11px;
}
.evid.pos{border-left-color:var(--teal);background:var(--teal-soft)}
.evid.neu{border-left-color:var(--blue);background:var(--blue-soft)}
.evid .e-t{font-size:12px;font-weight:700;color:var(--muted);margin-bottom:5px}
.evid .e-q{font-size:14.5px;color:var(--text);line-height:1.85}
.evid .e-n{margin-top:6px;font-size:12.5px;color:var(--muted)}

/* ---------- 过程视图（引擎页：左说明 + 右视图） ---------- */
.process{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;
  padding:30px 0;border-bottom:1px dashed var(--line-soft);
}
.process:last-child{border-bottom:0}
.process .p-n{
  display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.14em;
  color:var(--accent);margin-bottom:12px;
}
.process .p-t{font-size:22px;margin-bottom:12px;letter-spacing:-.02em}
.process .p-d{font-size:15px;color:var(--body);line-height:1.85}
.process .p-q{margin-top:16px;font-size:14px;color:var(--muted);padding-left:13px;border-left:2px solid var(--accent);line-height:1.8}
.process .p-q b{color:var(--text)}
.process .p-view{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}

/* ---------- 阅读区 ---------- */
.narrow{max-width:840px}
.lead-lg{font-size:19px;line-height:1.9;color:var(--body)}
.section--ink .lead-lg{color:rgba(255,255,255,.72)}
.statement{
  font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.55;letter-spacing:-.025em;
  padding:30px 0;
}
.statement em{font-style:normal;color:var(--accent)}
.section--ink .statement{color:#fff}
.section--ink .statement em{color:var(--accent-2)}

/* ---------- 角色收口 ---------- */
.focus-role{
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;background:#fff;
  box-shadow:var(--shadow-sm);
}
.focus-role .fr-tag{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:5px 12px;border-radius:7px;margin-bottom:18px;
}
.focus-role h3{font-size:24px;margin-bottom:14px}
.focus-role ul{margin-top:18px}
.focus-role ul li{padding:8px 0 8px 22px;position:relative;font-size:15px;color:var(--body);line-height:1.8}
.focus-role ul li::before{
  content:"";position:absolute;left:0;top:16px;width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.stage-2{margin-top:26px;padding-top:22px;border-top:1px solid var(--line-soft)}
.stage-2 .s2-t{font-size:13px;font-weight:700;color:var(--muted);margin-bottom:12px;letter-spacing:.04em}
.stage-2 .s2-items{display:flex;flex-wrap:wrap;gap:9px}

/* ---------- 飞轮 ---------- */
.flywheel{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.fw-diagram{position:relative;display:grid;place-items:center;min-height:340px}
.fw-ring{
  position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.12);
}
.fw-ring.r1{width:330px;height:330px}
.fw-ring.r2{width:240px;height:240px;border-style:dashed}
.fw-core{
  position:relative;width:172px;height:172px;border-radius:50%;
  background:linear-gradient(150deg,var(--accent),#FFB067);color:#fff;
  display:grid;place-items:center;text-align:center;padding:20px;
  box-shadow:0 22px 50px rgba(255,106,43,.34);
}
.fw-core b{display:block;font-size:17px;font-weight:800;line-height:1.4}
.fw-core span{font-size:11.5px;opacity:.85;margin-top:6px;display:block}
.fw-node{
  position:absolute;width:150px;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  text-align:center;backdrop-filter:blur(4px);
}
.fw-node b{display:block;font-size:13.5px;color:#fff;margin-bottom:3px}
.fw-node span{font-size:11.5px;color:rgba(255,255,255,.55);line-height:1.5}
.fw-node.n1{top:8px;left:50%;transform:translateX(-50%)}
.fw-node.n2{top:50%;right:0;transform:translateY(-50%)}
.fw-node.n3{bottom:8px;left:50%;transform:translateX(-50%)}
.fw-node.n4{top:50%;left:0;transform:translateY(-50%)}
@media (max-width:1080px){
  .chain{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:1fr;gap:22px}
  .flywheel{grid-template-columns:1fr;gap:30px}
}
@media (max-width:640px){
  .chain{grid-template-columns:1fr}
  .lead-lg{font-size:17px}
  .focus-role{padding:26px}
  .fw-diagram{min-height:300px}
  .fw-ring.r1{width:280px;height:280px}
  .fw-ring.r2{width:210px;height:210px}
  .fw-core{width:150px;height:150px}
  .fw-node{width:126px;padding:10px}
}

/* Product Intelligence OS authority-core revision */
.brand small{max-width:280px;white-space:normal;line-height:1.25}
.page-head .lead{max-width:860px}
.card p{line-height:1.78}
@media (max-width:760px){.brand small{max-width:190px}.hero h1{font-size:clamp(42px,13vw,66px)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

#leadForm input,#leadForm textarea{box-sizing:border-box;width:100%;margin:8px 0 18px;padding:13px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font:inherit}
#leadForm textarea{resize:vertical;min-height:120px}
#leadForm input:focus,#leadForm textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
#leadForm button:disabled{opacity:.55;cursor:wait}