/* ============================================================
   融见AI · 设计系统 v2.0
   语言：深色仪器感 / 单一琥珀信号 / 等宽数据字体 / RFS雷达母题
   ============================================================ */

:root{
  /* 色板 */
  --bg:        #0A101C;   /* 深海军蓝黑 */
  --panel:     #101A2E;   /* 面板 */
  --panel-2:   #0D1526;   /* 次面板 */
  --line:      #1E2C48;   /* 1px 发丝线 */
  --signal:    #F0A83C;   /* 琥珀信号色 */
  --signal-dim:#8A6224;
  --pass:      #4EA88E;
  --warn:      #D9A24A;
  --fail:      #D85C46;
  --text:      #F2F5FA;
  --muted:     #9AA7BC;
  --faint:     #5B6880;
  --paper:     #F7F5F0;   /* 文章纸面 */
  --ink:       #16233B;   /* 纸面文字 */

  /* 字体 */
  --sans: "Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  --serif: "Noto Serif SC","Songti SC",serif;
  --mono: "JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;

  /* 尺度 */
  --maxw: 1120px;
  --ease: cubic-bezier(.22,1,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:var(--sans); font-size:16px; line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--signal);color:#0A101C}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 网格底纹（仪器感） ---------- */
.gridbg{position:relative}
.gridbg::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.14;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(10,16,28,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;gap:32px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.02em}
.brand .mark{width:26px;height:26px;border-radius:22%;display:block;object-fit:cover}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:14px;color:var(--muted)}
.nav-links a{padding:6px 2px;border-bottom:2px solid transparent;transition:color .25s}
.nav-links a:hover{color:var(--text)}
.nav-links a.on{color:var(--signal);border-bottom-color:var(--signal)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:14px;padding:10px 22px;border-radius:6px;
  background:var(--signal);color:#0A101C;border:1px solid var(--signal);
  cursor:pointer;transition:box-shadow .3s,transform .2s;
  box-shadow:0 0 0 rgba(240,168,60,0);
  animation:breath 3.4s ease-in-out infinite;
}
.btn:hover{box-shadow:0 0 24px rgba(240,168,60,.35);transform:translateY(-1px)}
@keyframes breath{0%,100%{box-shadow:0 0 0 rgba(240,168,60,0)}50%{box-shadow:0 0 18px rgba(240,168,60,.22)}}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line);animation:none}
.btn.ghost:hover{border-color:var(--signal);color:var(--signal);box-shadow:none}
.nav .btn{padding:8px 18px;animation:none;font-size:13px}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 10px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--text);margin:4px 0}

/* ---------- 章节标记（编辑感） ---------- */
.marker{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  color:var(--signal);text-transform:uppercase;margin-bottom:14px;
  display:flex;align-items:center;gap:12px;
}
.marker::after{content:"";flex:1;max-width:80px;height:1px;background:var(--line)}
h2.sec{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.01em;line-height:1.3;max-width:20ch;text-wrap:balance}
.sec-sub{color:var(--muted);margin-top:12px;max-width:56ch}
section{padding:96px 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:none}

/* ---------- 全站颗粒质感 + 暗角（画面感底层） ---------- */
body::after{
  content:"";position:fixed;inset:0;z-index:120;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body::before{
  content:"";position:fixed;inset:0;z-index:119;pointer-events:none;
  background:radial-gradient(ellipse 130% 100% at 50% 40%,transparent 62%,rgba(4,7,14,.5) 100%);
}

/* ---------- Hero · 全屏沉浸仪器舱 ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:max(640px,100svh);
  display:flex;align-items:center;
  padding:120px 0 110px;
}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg img{
  position:absolute;right:0;top:50%;width:min(64vw,1020px);
  transform:translateY(-52%);
  mask-image:linear-gradient(100deg,transparent 0%,#000 34%),linear-gradient(0deg,transparent 0%,#000 22%,#000 80%,transparent 99%);
  -webkit-mask-image:linear-gradient(100deg,transparent 0%,#000 34%),linear-gradient(0deg,transparent 0%,#000 22%,#000 80%,transparent 99%);
  mask-composite:intersect;-webkit-mask-composite:source-in;
  opacity:.95;will-change:transform;
}
.hero-glow{
  position:absolute;z-index:0;pointer-events:none;
  right:-10%;top:-20%;width:70vw;height:90vw;max-width:1100px;max-height:1100px;
  background:radial-gradient(circle,rgba(240,168,60,.14),transparent 60%);
  filter:blur(10px);
}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,72px);align-items:center;width:100%}
.hero h1{font-size:clamp(34px,5vw,56px);font-weight:900;line-height:1.2;letter-spacing:-.02em;text-shadow:0 2px 40px rgba(4,7,14,.8);text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero .lead{color:#B8C3D6;margin:24px 0 36px;max-width:46ch;font-size:clamp(15px,1.3vw,17.5px);text-shadow:0 1px 24px rgba(4,7,14,.9)}
.scroll-cue{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;
  font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--faint);
  display:flex;flex-direction:column;align-items:center;gap:8px;text-transform:uppercase;
}
.scroll-cue::after{content:"";width:1px;height:34px;background:linear-gradient(var(--signal),transparent);animation:cue 2.2s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.float{animation:drift 7s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-10px) rotate(.4deg)}}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.tag{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  border:1px solid var(--line);border-radius:99px;padding:6px 14px;
}
.tag b{color:var(--signal);font-weight:600}

/* ---------- 评分仪器卡（品牌核心组件） ---------- */
.instrument{
  background:linear-gradient(160deg,rgba(16,26,46,.58),rgba(13,21,38,.5));
  backdrop-filter:blur(18px) saturate(1.2);-webkit-backdrop-filter:blur(18px) saturate(1.2);
  border:1px solid rgba(240,168,60,.22);border-radius:14px;padding:28px;
  position:relative;overflow:hidden;
  box-shadow:0 24px 80px rgba(3,6,12,.6),0 0 0 1px rgba(255,255,255,.04) inset,0 0 60px rgba(240,168,60,.06);
}
/* 雷达动态：扫描线旋转 + 节点呼吸 + 数据区绘入 */
.sweep{transform-origin:100px 100px;animation:sweep 4.2s linear infinite}
@keyframes sweep{to{transform:rotate(360deg)}}
.node{animation:nodepulse 2.6s ease-in-out infinite}
.node:nth-child(2){animation-delay:.4s}.node:nth-child(3){animation-delay:.8s}
.node:nth-child(4){animation-delay:1.2s}.node:nth-child(5){animation-delay:1.6s}
@keyframes nodepulse{0%,100%{opacity:1}50%{opacity:.35}}
.data-poly{transform-origin:100px 100px;transition:transform 1.1s var(--ease),opacity .9s ease}
.instrument:not(.live) .data-poly{transform:scale(.55);opacity:0}
.score-bar i,.dim-bar i{transition:width 1.2s var(--ease)}
@media (prefers-reduced-motion:reduce){
  .sweep,.node{animation:none}
  .data-poly,.score-bar i,.dim-bar i{transition:none}
}
.instrument::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 85% -10%,rgba(240,168,60,.09),transparent 55%);
}
.inst-head{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;color:var(--muted);font-family:var(--mono)}
.badge{font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:4px;border:1px solid}
.badge.good{color:var(--warn);border-color:var(--warn)}
.badge.pass{color:var(--pass);border-color:var(--pass)}
.badge.fail{color:var(--fail);border-color:var(--fail)}
.score-row{display:flex;align-items:flex-end;gap:10px;margin:14px 0 4px}
.score-num{font-family:var(--mono);font-size:56px;font-weight:700;line-height:1;color:var(--signal)}
.score-den{color:var(--faint);font-family:var(--mono);margin-bottom:8px}
.score-bar{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin-bottom:22px}
.score-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--signal-dim),var(--signal));border-radius:3px}
.inst-body{display:grid;grid-template-columns:190px 1fr;gap:20px;align-items:center}
.dim-row{display:grid;grid-template-columns:76px 1fr 34px;gap:10px;align-items:center;font-size:12.5px;color:var(--muted);margin:9px 0}
.dim-row .code{font-family:var(--mono);color:var(--faint);font-size:11px}
.dim-bar{height:4px;background:var(--line);border-radius:2px;overflow:hidden}
.dim-bar i{display:block;height:100%;background:var(--signal);opacity:.85;border-radius:2px}
.dim-row .val{font-family:var(--mono);text-align:right;color:var(--text)}

/* ---------- 数据条（诚实版） ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.stat{background:var(--panel-2);padding:28px 24px}
.stat .n{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--text)}
.stat .n em{font-style:normal;color:var(--signal)}
.stat .l{font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- 能力列表（非卡片，编辑式） ---------- */
.cap-list{border-top:1px solid var(--line)}
.cap{
  display:grid;grid-template-columns:70px 1fr auto;gap:28px;align-items:center;
  padding:34px 8px;border-bottom:1px solid var(--line);
  transition:background .3s,padding .3s var(--ease);
}
.cap:hover{background:var(--panel-2);padding-left:20px}
.cap .idx{font-family:var(--mono);color:var(--faint);font-size:13px}
.cap h3{font-size:21px;font-weight:800;margin-bottom:6px}
.cap p{color:var(--muted);font-size:14.5px;max-width:60ch}
.cap .go{color:var(--signal);font-family:var(--mono);font-size:13px;white-space:nowrap}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;counter-reset:step}
.step{background:var(--panel-2);padding:28px 22px;position:relative}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--mono);font-size:12px;color:var(--signal);letter-spacing:.15em;
}
.step h4{font-size:16px;font-weight:700;margin:12px 0 8px}
.step p{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 报告预览（Tab） ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:32px 0 0;flex-wrap:wrap}
.tab{
  font-family:var(--mono);font-size:13px;color:var(--muted);
  padding:10px 18px;cursor:pointer;border:none;background:none;
  border-bottom:2px solid transparent;transition:color .2s;
}
.tab:hover{color:var(--text)}
.tab.on{color:var(--signal);border-bottom-color:var(--signal)}
.tabpane{display:none;padding:34px 0}
.tabpane.on{display:block}
.q-list{counter-reset:q;border-top:1px solid var(--line)}
.q-item{padding:18px 4px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:44px 1fr;gap:14px;font-size:15px}
.q-item::before{counter-increment:q;content:"Q" counter(q);font-family:var(--mono);font-size:12px;color:var(--signal);padding-top:4px}
.risk{display:grid;grid-template-columns:64px 1fr;gap:16px;padding:16px 4px;border-bottom:1px solid var(--line);align-items:start}
.risk .lv{font-family:var(--mono);font-size:11px;padding:3px 8px;border-radius:4px;border:1px solid;text-align:center;margin-top:2px}
.risk .lv.hi{color:var(--fail);border-color:var(--fail)}
.risk .lv.md{color:var(--warn);border-color:var(--warn)}
.risk .lv.lo{color:var(--pass);border-color:var(--pass)}
.act{display:grid;grid-template-columns:44px 1fr auto;gap:14px;padding:16px 4px;border-bottom:1px solid var(--line);align-items:center;font-size:14.5px}
.act .prio{font-family:var(--mono);font-size:11px;color:var(--signal)}
.act a{color:var(--muted);font-size:13px;border-bottom:1px dashed var(--faint)}
.act a:hover{color:var(--signal)}

/* ---------- 研究所卡片（真实视觉封面） ---------- */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.art{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  background:var(--panel-2);transition:border-color .3s,transform .3s var(--ease),box-shadow .3s;
  display:flex;flex-direction:column;
}
.art:hover{border-color:var(--signal-dim);transform:translateY(-4px);box-shadow:0 18px 50px rgba(3,6,12,.55)}
.art .cover{aspect-ratio:16/10;background:var(--panel);position:relative;overflow:hidden}
.art .cover img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.art:hover .cover img{transform:scale(1.05)}
.art .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(10,16,28,.55))}
.art .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.art .cat{font-family:var(--mono);font-size:11px;color:var(--signal);letter-spacing:.14em}
.art h3{font-size:17px;font-weight:800;line-height:1.5}
.art .desc{font-size:13px;color:var(--muted);line-height:1.7}
.art .meta{margin-top:auto;padding-top:10px;font-family:var(--mono);font-size:11px;color:var(--faint);display:flex;justify-content:space-between}

/* ---------- 分类过滤 ---------- */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:30px 0 38px}
.chip{
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
  border:1px solid var(--line);background:none;border-radius:99px;
  padding:8px 18px;cursor:pointer;transition:all .25s;
}
.chip:hover{color:var(--text);border-color:var(--faint)}
.chip.on{color:#0A101C;background:var(--signal);border-color:var(--signal);font-weight:700}
.empty{
  display:none;border:1px dashed var(--line);border-radius:12px;
  padding:56px 24px;text-align:center;color:var(--faint);font-size:14px;
}
.empty.show{display:block}

/* ---------- FAQ（GEO 原生组件） ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 4px;
  display:grid;grid-template-columns:44px 1fr 24px;gap:14px;align-items:center;
  font-weight:700;font-size:16px;transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .no{font-family:var(--mono);font-size:12px;color:var(--faint)}
.faq summary:hover{color:var(--signal)}
.faq summary .pm{font-family:var(--mono);color:var(--faint);transition:transform .3s;text-align:center}
.faq details[open] summary .pm{transform:rotate(45deg);color:var(--signal)}
.faq .ans{padding:0 4px 26px 58px;color:var(--muted);font-size:14.5px;max-width:70ch}
.faq .ans b{color:var(--text)}

/* ---------- 大 CTA ---------- */
.bigcta{
  border:1px solid var(--line);border-radius:16px;padding:72px 40px;text-align:center;
  background:
    radial-gradient(ellipse 60% 90% at 50% 120%,rgba(240,168,60,.12),transparent 60%),
    var(--panel-2);
  position:relative;overflow:hidden;
}
.bigcta h2{font-size:clamp(24px,3vw,36px);font-weight:900;max-width:24ch;margin:0 auto 14px}
.bigcta p{color:var(--muted);margin-bottom:32px}
.bigcta .fine{margin-top:22px;font-size:12px;color:var(--faint)}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);padding:56px 0 40px;background:var(--panel-2)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr auto;gap:40px;align-items:start}
.foot-grid h5{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--faint);margin-bottom:14px;text-transform:uppercase}
.foot-grid a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color .2s}
.foot-grid a:hover{color:var(--signal)}
.foot-brand p{color:var(--muted);font-size:13.5px;max-width:32ch;margin-top:12px}
.qr{width:92px;height:92px;border:1px solid var(--line);border-radius:8px;padding:6px;background:#fff}
.qr-cap{font-size:11px;color:var(--faint);margin-top:8px;font-family:var(--mono)}
.foot-legal{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--faint);
}
.foot-legal a{color:var(--faint)}
.foot-legal a:hover{color:var(--muted)}

/* ---------- 表单页 ---------- */
.formcard{
  max-width:720px;margin:0 auto;background:var(--panel);
  border:1px solid var(--line);border-radius:14px;padding:44px;
}
.field{margin-bottom:26px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.field label .req{color:var(--fail);margin-left:3px}
.field .hint{font-weight:400;color:var(--faint);font-size:12.5px;margin-left:8px}
.field input,.field textarea,.field select{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:8px;
  color:var(--text);font-family:var(--sans);font-size:14.5px;padding:13px 16px;
  transition:border-color .2s;outline:none;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--signal)}
.field textarea{min-height:110px;resize:vertical}
.field .err{display:none;color:var(--fail);font-size:12.5px;margin-top:6px}
.field.invalid input,.field.invalid textarea,.field.invalid select{border-color:var(--fail)}
.field.invalid .err{display:block}
.segs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.seg{
  border:1px solid var(--line);border-radius:8px;background:none;color:var(--muted);
  font-size:14px;padding:12px;cursor:pointer;font-family:var(--sans);transition:all .2s;
}
.seg:hover{border-color:var(--faint);color:var(--text)}
.seg.on{border-color:var(--signal);color:var(--signal);background:rgba(240,168,60,.08);font-weight:700}
.upload{
  border:1px dashed var(--line);border-radius:10px;padding:30px;text-align:center;
  color:var(--muted);font-size:13.5px;cursor:pointer;transition:border-color .2s;
}
.upload:hover{border-color:var(--signal)}
.upload .mono{font-family:var(--mono);font-size:11px;color:var(--faint);margin-top:6px}
.privacy-note{
  display:flex;gap:10px;align-items:flex-start;font-size:12.5px;color:var(--muted);
  background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin-bottom:28px;
}
.privacy-note a{color:var(--signal)}

/* ---------- 报告页 ---------- */
.report-head{border-bottom:1px solid var(--line);padding:56px 0 40px}
.report-head .pname{font-size:clamp(26px,3.4vw,40px);font-weight:900;margin-top:10px}
.report-meta{font-family:var(--mono);font-size:12px;color:var(--faint);margin-top:12px;display:flex;gap:22px;flex-wrap:wrap}
.report-grid{display:grid;grid-template-columns:340px 1fr;gap:40px;padding:48px 0}
.verdict{
  border:1px solid var(--line);border-radius:14px;padding:28px;text-align:center;
  background:linear-gradient(170deg,var(--panel),var(--panel-2));
  position:sticky;top:88px;align-self:start;
}
.dial{width:180px;margin:14px auto 6px}
.verdict .vd{font-size:13px;color:var(--muted)}
.report-sec h3{font-size:19px;font-weight:800;margin:38px 0 6px;display:flex;align-items:baseline;gap:12px}
.report-sec h3 .no{font-family:var(--mono);font-size:12px;color:var(--signal)}
.report-sec .sub{font-size:13px;color:var(--faint);margin-bottom:14px}

/* ---------- 文章页（纸面编辑） ---------- */
.article-hero{padding:80px 0 48px;border-bottom:1px solid var(--line)}
.article-hero h1{font-family:var(--serif);font-size:clamp(28px,4vw,44px);font-weight:900;line-height:1.35;max-width:22ch;margin-top:16px}
.article-meta{font-family:var(--mono);font-size:12px;color:var(--faint);margin-top:20px;display:flex;gap:20px;flex-wrap:wrap}
.paper{background:var(--paper);color:var(--ink)}
.paper-in{max-width:720px;margin:0 auto;padding:64px 24px 80px}
.paper h2{font-family:var(--serif);font-size:24px;font-weight:900;margin:48px 0 18px;padding-left:16px;border-left:4px solid var(--signal)}
.paper p{margin:18px 0;font-size:16.5px;line-height:2;color:#2A3A57}
.paper .lede{font-size:18px;color:var(--ink);border-left:4px solid var(--signal);padding:6px 0 6px 20px;margin:28px 0;background:linear-gradient(90deg,rgba(240,168,60,.08),transparent)}
.paper blockquote{margin:28px 0;padding:20px 24px;background:#fff;border:1px solid #E4E0D5;border-radius:8px;color:#44536E;font-size:15px}
.paper ul{margin:18px 0 18px 22px;color:#2A3A57;line-height:2}
.paper .rfs-table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14px;background:#fff}
.paper .rfs-table th{background:var(--ink);color:#F7F5F0;padding:10px 14px;text-align:left;font-family:var(--mono);font-size:12px;letter-spacing:.08em}
.paper .rfs-table td{padding:10px 14px;border:1px solid #E4E0D5;color:#2A3A57}
.paper .takeaway{background:var(--ink);color:#F7F5F0;border-radius:10px;padding:28px 30px;margin:40px 0}
.paper .takeaway h3{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--signal);margin-bottom:12px}
.paper .takeaway p{color:#C7D2E4;font-size:15px;margin:8px 0}
.art-cta{background:var(--panel-2);border-top:1px solid var(--line);padding:56px 0;text-align:center}
.toc{font-family:var(--mono);font-size:12.5px;color:var(--muted);border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:30px 0;line-height:2.1}
.toc b{color:var(--faint);letter-spacing:.14em;display:block;margin-bottom:6px}
.toc a{color:var(--muted)}
.toc a:hover{color:var(--signal)}

/* ---------- 登录浮层 / 弹窗 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;
  background:rgba(4,7,14,.72);backdrop-filter:blur(8px);padding:20px;
}
.modal-mask.show{display:flex}
.modal{
  width:min(420px,100%);background:linear-gradient(165deg,rgba(16,26,46,.96),rgba(13,21,38,.96));
  border:1px solid rgba(240,168,60,.25);border-radius:16px;padding:34px 32px 28px;position:relative;
  box-shadow:0 40px 120px rgba(0,0,0,.7);
  animation:modalin .35s var(--ease);
}
@keyframes modalin{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
.modal-x{
  position:absolute;top:12px;right:14px;background:none;border:none;color:var(--faint);
  font-size:24px;cursor:pointer;line-height:1;padding:4px 8px;
}
.modal-x:hover{color:var(--text)}
.modal h3{font-size:22px;font-weight:800;margin-bottom:8px}
.modal-sub{color:var(--muted);font-size:13.5px;margin-bottom:24px}
.code-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.code-row .btn{white-space:nowrap;padding:12px 16px;font-size:13px}
.mock-hint{font-family:var(--mono);font-size:11px;color:var(--signal);margin-top:8px}
.modal-go{width:100%;justify-content:center;padding:14px;font-size:15px;margin-top:6px}
.modal-fine{font-size:12px;color:var(--faint);text-align:center;margin-top:16px}
.modal-fine a{color:var(--muted);border-bottom:1px dashed var(--faint)}

/* ---------- 报告锁定态 ---------- */
.locked-sec{
  border:1px dashed var(--line);border-radius:12px;padding:26px;position:relative;
  background:var(--panel-2);margin:14px 0;overflow:hidden;
}
.locked-sec .blur{filter:blur(6px);opacity:.5;pointer-events:none;user-select:none}
.locked-sec .lock-tag{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:var(--muted);font-size:13px;background:rgba(10,16,28,.35);
}
.locked-sec .lock-tag .k{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--signal)}
.paywall-banner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  border:1px solid rgba(240,168,60,.4);border-radius:12px;padding:20px 24px;margin:28px 0;
  background:linear-gradient(90deg,rgba(240,168,60,.1),rgba(240,168,60,.03));
}
.paywall-banner .t{font-size:15px;font-weight:700}
.paywall-banner .p{font-family:var(--mono);color:var(--signal);font-size:13px;margin-top:4px}
.mode-badge{
  font-family:var(--mono);font-size:11px;color:var(--warn);border:1px solid var(--warn);
  border-radius:4px;padding:3px 10px;margin-left:12px;vertical-align:middle;
}
/* 任务进度浮层 */
.task-mask{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:rgba(4,7,14,.8);backdrop-filter:blur(8px)}
.task-mask.show{display:flex}
.task-box{text-align:center;padding:40px}
.task-box .spin{
  width:56px;height:56px;margin:0 auto 22px;border-radius:50%;
  border:2px solid var(--line);border-top-color:var(--signal);
  animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.task-box .hint{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.1em}
.task-box .sub{font-size:12px;color:var(--faint);margin-top:10px}

/* ---------- 全幅视觉段（产品/关于页画面感） ---------- */
.visual{
  position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(240,168,60,.16);
  box-shadow:0 30px 90px rgba(3,6,12,.6);
}
.visual img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:21/10}
.visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,16,28,.05) 55%,rgba(10,16,28,.5))}
.visual .cap-tag{
  position:absolute;left:22px;bottom:18px;z-index:2;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:rgba(240,168,60,.9);text-transform:uppercase;
}
.visual.tall img{aspect-ratio:16/8}

/* ---------- 文章头图 ---------- */
.article-cover{border-radius:14px;overflow:hidden;border:1px solid var(--line);margin-top:36px;box-shadow:0 24px 70px rgba(3,6,12,.5)}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;display:block}

/* ---------- 首屏下方渐隐过渡带 ---------- */
.fadeband{height:120px;background:linear-gradient(180deg,transparent,var(--bg));margin-top:-120px;position:relative;z-index:3;pointer-events:none}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .btn{animation:none}
}

/* ---------- 响应式 · 流体优先 ---------- */
.wrap{padding:0 clamp(18px,4vw,40px)}

/* 平板（竖屏）及以下 */
@media(max-width:1100px){
  .hero-bg img{right:-24%;width:110vw;opacity:.55}
  .hero-glow{right:-30%}
  .hero-in{grid-template-columns:1fr;gap:44px}
  .hero .lead{max-width:56ch}
  .instrument{max-width:560px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .art-grid{grid-template-columns:repeat(2,1fr)}
  .report-grid{grid-template-columns:1fr}
  .verdict{position:static;max-width:420px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
/* 手机 */
@media(max-width:720px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(13,21,38,.97);backdrop-filter:blur(16px);
    flex-direction:column;padding:18px 24px;gap:6px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .burger{display:block}
  section{padding:64px 0}
  .hero{min-height:0;padding:96px 0 84px}
  .hero-bg img{right:-45%;width:170vw;opacity:.4}
  .scroll-cue{display:none}
  .art-grid{grid-template-columns:1fr}
  .inst-body{grid-template-columns:1fr}
  .cap{grid-template-columns:44px 1fr;gap:16px}
  .cap .go{display:none}
  .formcard{padding:28px 22px}
  .segs{grid-template-columns:repeat(2,1fr)}
  .faq summary{grid-template-columns:30px 1fr 20px}
  .faq .ans{padding-left:44px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .bigcta{padding:52px 22px}
  .visual img{aspect-ratio:16/10}
  .article-cover img{aspect-ratio:16/10}
  .stats .stat{padding:20px 16px}
  .stat .n{font-size:26px}
}
/* 手机横屏专项：压低首屏高度、横排利用宽度 */
@media(max-height:520px) and (orientation:landscape){
  .hero{min-height:0;padding:88px 0 60px}
  .hero-in{grid-template-columns:1fr 1fr;gap:32px}
  .hero h1{font-size:clamp(26px,4.2vh,34px)}
  .hero .lead{margin:14px 0 22px;font-size:14px}
  .hero-tags{margin-top:18px}
  .hero-bg img{width:56vw;right:-4%}
  .scroll-cue{display:none}
  .instrument{padding:18px;max-width:none}
  .score-num{font-size:38px}
  .inst-body{grid-template-columns:150px 1fr;gap:14px}
  section{padding:56px 0}
}
/* 超宽屏：收紧最大宽度节奏，避免元素漂移 */
@media(min-width:1600px){
  :root{--maxw:1280px}
  .hero-bg img{width:min(54vw,1100px);right:2%}
}