/* =================================================================
   极谱科技 geply-web — 官方网站样式
   配色：品牌蓝 #2945f0 · 深夜蓝 #0a0f20 · 深色文字 #00152a
       · 米白 #fafaf7 · 卡片边 #f1f1f5
================================================================= */

/* ---- Reset & tokens ---- */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
:root{
  --blue:#2945f0;
  --blue-soft:#eef1ff;
  --blue-deep:#1e30c7;
  --navy:#0a0f20;
  --ink:#00152a;
  --ink-2:#0a0f20;
  --text:#0a0f20;
  --text-2:#3b4255;
  --text-3:#6b7385;
  --line:#f1f1f5;
  --line-2:#e7e9ee;
  --cream:#fafaf7;
  --bg:#ffffff;
  --grey-bg:#f5f5f0;
  --dark-bg:#0a0f20;
  --dark-soft:#11172a;
  --dark-line:#1f263d;
  --dark-text:#d8dde8;
  --dark-text-2:#8990a3;
  --dark-text-3:#5d6477;
  --shadow-sm:0 1px 2px rgba(10,15,32,.04),0 1px 3px rgba(10,15,32,.04);
  --shadow-md:0 8px 24px rgba(10,15,32,.06),0 2px 4px rgba(10,15,32,.04);
  --shadow-lg:0 18px 60px rgba(10,15,32,.12),0 6px 16px rgba(10,15,32,.06);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --maxw:1180px;
  --pad:48px;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.6;
  font-size:16px;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:transparent;color:inherit}
img,svg{display:block;max-width:100%}

/* ---- Layout ---- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{padding:104px 0}
.section-grey{background:var(--grey-bg)}

/* ---- Top Nav ---- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(250,250,247,.78);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s, background .25s;
}
.nav.is-scrolled{background:rgba(250,250,247,.92);border-bottom-color:var(--line)}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad);
  gap:32px;
}
.brand{display:flex;align-items:center;gap:0}
.brand-img{
  height:30px;width:auto;display:block;
  /* lift slightly so the optical baseline matches the nav */
  margin-top:2px;
}

.nav-menu{display:flex;align-items:center;gap:36px}
.nav-menu a{
  font-size:14px;color:var(--text-2);
  font-weight:500;
  padding:6px 0;
  position:relative;
  transition:color .15s;
}
.nav-menu a:hover{color:var(--blue)}
.nav-cta{padding:10px 18px;font-size:13.5px}

.nav-toggle{display:none;width:36px;height:36px;border-radius:8px;position:relative}
.nav-toggle span{
  display:block;position:absolute;left:8px;right:8px;height:2px;
  background:var(--ink);border-radius:2px;transition:transform .2s, opacity .2s;
}
.nav-toggle span:nth-child(1){top:12px}
.nav-toggle span:nth-child(2){top:17px}
.nav-toggle span:nth-child(3){top:22px}
.nav-toggle[aria-expanded=true] span:nth-child(1){top:17px;transform:rotate(45deg)}
.nav-toggle[aria-expanded=true] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded=true] span:nth-child(3){top:17px;transform:rotate(-45deg)}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 22px;border-radius:999px;
  font-weight:600;font-size:14.5px;
  transition:transform .15s, background .15s, color .15s, border-color .15s, box-shadow .15s;
  white-space:nowrap;
  cursor:pointer;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--navy);color:#fff;
  box-shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 18px rgba(10,15,32,.18);
}
.btn-primary:hover{background:#1a213a}
.btn-blue{
  background:var(--blue);color:#fff;
  box-shadow:0 8px 22px rgba(41,69,240,.28), inset 0 0 0 1px rgba(255,255,255,.08);
}
.btn-blue:hover{background:var(--blue-deep)}
.btn-ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--line-2);
}
.btn-ghost:hover{border-color:var(--ink);background:#fff}

/* on dark hero, ghost inverts */
.hero .btn-ghost{
  color:#fff;
  border-color:rgba(255,255,255,.22);
}
.hero .btn-ghost:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.4);
}

/* ---- Eyebrow / Section title ---- */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:13px;color:var(--text-2);
  letter-spacing:.04em;
  margin-bottom:24px;
}
.eyebrow-bar{display:inline-block;width:36px;height:1px;background:var(--text-3)}

.section-title{
  font-size:46px;line-height:1.18;letter-spacing:-.02em;
  font-weight:800;color:var(--ink);
  margin:0 0 28px;
  max-width:780px;
}
.section-lead{
  font-size:16px;color:var(--text-2);
  max-width:760px;margin:0 0 56px;
  line-height:1.85;
}

/* ---- Hero ---- */
.hero{
  background:var(--navy);
  color:#fff;
  padding:88px 0 80px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(41,69,240,.18), transparent 60%),
    radial-gradient(800px 600px at 10% 110%, rgba(41,69,240,.08), transparent 60%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  max-width:var(--maxw);margin:0 auto;
  padding:0 var(--pad);
}
.pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  color:#cdd2e0;font-size:13px;
  font-weight:500;
  margin-bottom:36px;
}
.pill-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--blue);
  box-shadow:0 0 0 4px rgba(41,69,240,.22);
}
.hero-title{
  font-size:64px;line-height:1.16;letter-spacing:-.02em;
  font-weight:800;margin:0 0 32px;
  max-width:880px;
}
.hero-title .hl{color:var(--blue)}
.hero-sub{
  font-size:16.5px;color:#b8bfd1;line-height:1.85;
  max-width:760px;margin:0 0 40px;
}
.hero-sub b{color:#fff;font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:48px}

/* ---- Demo: 豆包对话循环演示 ---- */
.demo{
  margin:8px 0 0;
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.03);
  padding:20px;
}
.demo-head{
  display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;
}
.demo-head-l{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.demo-kicker{
  font-size:11.5px;font-weight:700;color:#fff;
  background:var(--blue);padding:5px 12px;border-radius:999px;
  letter-spacing:.06em;
}
.demo-query{font-size:13px;color:#9aa2b8}
.demo-replay{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  color:#cdd2e0;font-size:12.5px;font-weight:500;
  transition:background .15s,color .15s,border-color .15s;
}
.demo-replay:hover{background:rgba(255,255,255,.07);color:#fff;border-color:rgba(255,255,255,.32)}
.demo-replay svg{opacity:.85}

/* 阶段指示器：优化前 → 极谱 GEO 引擎 → 优化后 */
.demo-steps{
  list-style:none;margin:18px 0;
  padding:0;
  display:flex;align-items:center;justify-content:center;
}
.demo-steps li{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:#5f6779;
  transition:color .35s;
}
.demo-steps li i{
  width:7px;height:7px;border-radius:50%;
  background:#39405c;flex-shrink:0;
  transition:background .35s, box-shadow .35s;
}
.demo-steps li::after{
  content:"";width:46px;height:1px;
  background:#2a3050;margin:0 15px;
  transition:background .35s;
}
.demo-steps li:last-child::after{display:none}
.demo-steps li.done{color:#8a93ad}
.demo-steps li.done i{background:#5f6a8f}
.demo-steps li.done::after{background:rgba(41,69,240,.45)}
.demo-steps li.on{color:#fff;font-weight:600}
.demo-steps li.on i{background:var(--blue);box-shadow:0 0 0 4px rgba(41,69,240,.24)}
.demo-steps li.on.done::after{background:rgba(41,69,240,.45)}

/* ---- doubao window mock ---- */
.demo-stage{max-width:720px;margin:0 auto}
.db{
  position:relative;
  display:flex;flex-direction:column;
  background:#fff;border-radius:14px;overflow:hidden;
  border:1px solid rgba(0,0,0,.06);
  box-shadow:0 24px 60px rgba(0,0,0,.34);
}
.db-bar{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
  height:38px;padding:0 12px;
  background:#f4f5f7;border-bottom:1px solid #eceef1;
}
.db-dots{display:inline-flex;gap:5px}
.db-dots i{width:9px;height:9px;border-radius:50%;background:#dcdfe4;display:block}
.db-name{
  display:inline-flex;align-items:center;gap:6px;
  margin-left:4px;font-size:12.5px;font-weight:600;color:#1f2329;
}
.db-mark{
  width:18px;height:18px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,#5b8cff,#7b5bff 46%,#ff7ab6);
  color:#fff;font-size:10px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}
.db-model{
  margin-left:auto;font-size:11px;color:#8a9099;
  background:#fff;border:1px solid #e6e8ec;
  padding:3px 8px;border-radius:6px;white-space:nowrap;
}

.db-body{
  position:relative;
  padding:16px 14px;display:flex;flex-direction:column;gap:14px;
  background:#fff;
}
.db-msg{display:flex;gap:8px;align-items:flex-start}
.db-msg.me{justify-content:flex-end}
.db-bubble{
  display:inline-block;max-width:88%;
  background:linear-gradient(135deg,#4e6ef2,#6d8bff);
  color:#fff;font-size:13px;line-height:1.7;
  padding:9px 13px;border-radius:14px 14px 4px 14px;
  min-height:38px;
}
.db-bubble.typing::after{
  content:"";display:inline-block;
  width:2px;height:13px;margin-left:2px;vertical-align:-2px;
  background:rgba(255,255,255,.9);
  animation:caret .7s steps(1) infinite;
}
@keyframes caret{0%,49%{opacity:1}50%,100%{opacity:0}}

.db-av{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,#5b8cff,#7b5bff 46%,#ff7ab6);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
}
/* 两套答案叠放，高度取两者最大值，切换时窗口不跳动 */
.db-answer{
  flex:1;min-width:0;
  display:grid;
  background:#f5f6f8;border-radius:4px 14px 14px 14px;
  padding:12px 14px;
  font-size:13px;line-height:1.85;color:#1f2329;
}
.aset{
  grid-area:1 / 1;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;
  transition:opacity .32s ease;
}
.aset.on{opacity:1;visibility:visible}
.aset > * + *{margin-top:9px}
.aset p{margin:0}
.aset ol{margin:0;padding-left:17px;display:flex;flex-direction:column;gap:5px}
.aset li{line-height:1.8}
.aset b{font-weight:700;color:#0b1020}
.aset b.brand{color:var(--blue)}

.db-src{
  margin-top:10px;padding-top:9px;border-top:1px solid #e6e8ec;
  display:flex;align-items:center;gap:6px;flex-wrap:wrap;
  font-size:11px;color:#8a9099;
}
.db-src-t{color:#61666e;font-weight:600}
.db-cite{
  padding:2px 7px;border-radius:4px;
  background:#fff;border:1px solid #e6e8ec;color:#61666e;font-size:10.5px;
}

/* ---- 转场：极谱 GEO 引擎（铺满对话区，像在聊天框里放一段视频） ---- */
.db-trans{
  position:absolute;inset:0;
  z-index:3;
  background:linear-gradient(135deg,#0a0f20 0%,#14275f 52%,#2945f0 100%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;overflow:hidden;
  opacity:0;visibility:hidden;
  transition:opacity .4s ease, visibility .4s, transform .4s ease;
  transform:scale(.985);
}
/* 视频进度条：随循环填充，强化“在放一段视频”的观感 */
.db-progress{
  position:absolute;left:0;bottom:0;height:3px;width:0;z-index:4;
  background:linear-gradient(90deg,#4e6ef2,#8fa0ff);
  box-shadow:0 0 8px rgba(78,110,242,.8);
  animation:scrub 10.8s linear infinite;
}
@keyframes scrub{from{width:0}to{width:100%}}
.db-trans.on{opacity:1;visibility:visible;transform:none}
.db-trans::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 300px at 50% 38%, rgba(123,139,255,.22), transparent 70%);
  pointer-events:none;
}
.db-trans::after{
  content:"";position:absolute;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);
  animation:scan 1.6s ease-in-out infinite;
}
@keyframes scan{
  0%{top:0;opacity:0}
  12%{opacity:1}
  88%{opacity:1}
  100%{top:100%;opacity:0}
}
.trans-core{
  position:relative;width:84px;height:84px;
  display:flex;align-items:center;justify-content:center;
}
.trans-ring{
  position:absolute;inset:0;border-radius:50%;
  border:2px solid rgba(255,255,255,.12);
  border-top-color:#8fa0ff;
  border-right-color:#8fa0ff;
  animation:spin 1.1s linear infinite;
}
.trans-ring.r2{inset:10px;animation-duration:1.7s;animation-direction:reverse;border-top-color:rgba(255,255,255,.5)}
@keyframes spin{to{transform:rotate(360deg)}}
.trans-logo{width:38px;height:38px;display:block;position:relative;filter:drop-shadow(0 2px 6px rgba(0,0,0,.3))}
.trans-t{font-size:15.5px;font-weight:800;color:#fff;letter-spacing:.01em;position:relative}
.trans-s{font-size:11.5px;color:#b9c2e6;position:relative}
.trans-cap{
  display:flex;align-items:center;gap:10px;
  margin-top:2px;font-size:12px;color:#cdd4f0;position:relative;
}
.trans-cap span{padding:3px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.2)}
.trans-cap span:last-child{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35);font-weight:700;color:#fff}
.trans-cap i{width:30px;height:1px;background:rgba(255,255,255,.4);position:relative}
.trans-cap i::after{content:"→";position:absolute;right:-2px;top:-9px;color:#fff;font-size:12px}

.db-input{
  flex-shrink:0;
  margin:0 14px;height:38px;border-radius:19px;
  background:#f4f5f7;border:1px solid #eceef1;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 6px 0 16px;font-size:12.5px;color:#a5abb3;
}
.db-send{
  width:28px;height:28px;border-radius:50%;
  background:#c9cfd8;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
}

.db-verdict{
  flex-shrink:0;display:grid;
  border-top:1px solid #eceef1;
  transition:background .38s ease, border-color .38s ease;
}
.db-verdict[data-v="a"]{background:#fafbfc;border-top-color:#eceef1}
.db-verdict[data-v="b"]{background:#eef1ff;border-top-color:#dfe4ff}
.vd-set{
  grid-area:1 / 1;
  display:flex;align-items:center;gap:8px;
  padding:11px 14px;
  font-size:12.5px;
  opacity:0;visibility:hidden;
  transition:opacity .32s ease;
}
.vd-set.show{opacity:1;visibility:visible}
.vd-set.off{color:#61666e}
.vd-set.off b{color:#1f2329;font-weight:700}
.vd-dot{width:8px;height:8px;border-radius:50%;background:#c2c7d0;flex-shrink:0}
.vd-set.on{color:#2b3560}
.vd-set.on b{color:var(--blue)}
.vd-set.on .vd-dot{background:var(--blue);box-shadow:0 0 0 4px rgba(41,69,240,.18)}

.demo-foot{
  margin:16px 0 0;font-size:12px;color:#6f7689;line-height:1.7;
  text-align:center;
}

/* ---- 播放状态：有 JS 时由脚本驱动 ---- */
.js .anim{
  opacity:0;transform:translateY(8px);
  transition:opacity .45s cubic-bezier(.22,.61,.36,1), transform .45s cubic-bezier(.22,.61,.36,1);
}
.js .anim.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .anim{transition:none}
  .db-bubble.typing::after,.trans-ring,.db-trans::after{animation:none}
}

/* ---- Capability cards ---- */
.cap-card{
  margin-top:32px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px;
  display:grid;grid-template-columns:1fr 1.4fr;
  gap:48px;
  align-items:start;
}
.cap-card.reverse{grid-template-columns:1.4fr 1fr}
.cap-card.reverse .cap-text{order:2}
.cap-card.reverse .cap-shot{order:1}
.cap-tag{
  display:inline-block;
  font-size:13px;color:var(--blue);font-weight:600;
  letter-spacing:.02em;margin-bottom:16px;
}
.cap-title{
  font-size:28px;font-weight:800;color:var(--ink);
  letter-spacing:-.015em;margin:0 0 16px;line-height:1.3;
}
.cap-text p{color:var(--text-2);font-size:14.5px;line-height:1.85;margin:0 0 20px}
.cap-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.cap-list li{
  display:flex;align-items:flex-start;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;
}
.cap-list li b{color:var(--blue);font-weight:700;font-size:14px;flex-shrink:0}
.cap-list li span{color:var(--text);font-size:14.5px;font-weight:500}

.cap-mini-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;
}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:16px;
  display:flex;flex-direction:column;gap:6px;
}
.mini-card b{color:var(--ink);font-size:14px;font-weight:700}
.mini-card span{color:var(--text-2);font-size:13px;line-height:1.55}

/* ---- Platform screenshot mock ---- */
.cap-shot{margin:0}
.shot-frame{
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;background:#fff;
  display:flex;
  box-shadow:var(--shadow-sm);
  min-height:420px;
}
.shot-side{
  width:170px;background:#0c1226;color:#aab1c4;
  padding:14px 0;flex-shrink:0;
  border-right:1px solid rgba(255,255,255,.04);
  font-size:12.5px;
}
.shot-logo-mark{width:22px;height:22px;display:block;flex-shrink:0}
.shot-logo{
  display:flex;align-items:center;gap:8px;
  padding:0 14px 14px;
  border-bottom:1px solid rgba(255,255,255,.06);
  margin-bottom:10px;
  color:#e6e9f3;font-weight:600;font-size:13px;
}
.shot-nav{list-style:none;margin:0;padding:0}
.shot-nav li{
  padding:8px 14px;cursor:default;
  display:flex;align-items:center;gap:6px;
}
.shot-nav li.ind{padding-left:30px;font-size:12px;color:#7e8597}
.shot-nav li.active{
  background:rgba(41,69,240,.18);color:#fff;
  border-left:2px solid var(--blue);
  padding-left:12px;
}
.shot-main{flex:1;padding:18px 18px 20px;display:flex;flex-direction:column;gap:14px}
.shot-h{display:flex;flex-direction:column;gap:4px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.shot-h-t{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:14px}
.shot-h-mark{
  width:26px;height:26px;border-radius:7px;
  background:var(--blue-soft);color:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
}
.shot-h-t b{font-weight:700}
.shot-h-actions{margin-left:auto;font-size:11px;color:var(--blue)}
.shot-h-sub{color:var(--text-3);font-size:12px}

.shot-input{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:14px;display:flex;flex-direction:column;gap:10px;
}
.shot-input-line{height:14px;background:linear-gradient(90deg,#eef1ff,#f8f9ff);border-radius:6px}
.shot-input-foot{display:flex;align-items:center;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 10px;border-radius:6px;background:var(--cream);
  color:var(--text-2);font-size:12px;border:1px solid var(--line);
}
.btn-mini{
  margin-left:auto;
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:6px;background:var(--blue);color:#fff;font-size:12px;
}
.shot-tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{
  font-size:11.5px;color:var(--text-2);
  padding:5px 10px;border-radius:6px;background:var(--cream);
  border:1px solid var(--line);
}

/* shot cards (ranking) */
.shot-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.shot-stat{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:12px;display:flex;flex-direction:column;gap:4px;
}
.shot-stat-h{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);flex-wrap:wrap}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot.blue{background:var(--blue)}
.dot.orange{background:#f59e0b}
.badges{display:inline-flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.b{
  font-size:10px;padding:2px 6px;border-radius:4px;
  background:#f0f1f5;color:#3b4255;
}
.shot-stat-big{font-size:28px;font-weight:800;color:var(--ink);font-feature-settings:"tnum";line-height:1.1}
.shot-stat-meta{font-size:11px;color:var(--text-3)}
.spark{width:100%;height:36px}

.shot-table{
  border:1px solid var(--line);border-radius:10px;overflow:hidden;
  font-size:11.5px;color:var(--text);
}
.shot-table-h,.shot-table-row{
  display:grid;grid-template-columns:2fr .5fr .5fr 1.5fr 1.4fr .8fr;
  gap:8px;padding:8px 10px;align-items:center;
}
.shot-table-h{background:var(--cream);color:var(--text-3);font-weight:600}
.shot-table-row{border-top:1px solid var(--line)}
.shot-table-row .bar{position:relative;height:14px;background:var(--cream);border-radius:3px;overflow:hidden}
.shot-table-row .bar i{position:absolute;left:0;top:0;bottom:0;display:block;border-radius:3px}
.shot-table-row .bar em{
  position:absolute;left:8px;top:50%;transform:translateY(-50%);
  font-style:normal;font-size:10px;color:var(--ink);font-weight:600;z-index:1;
}
.shot-table-row .link{color:var(--blue);font-weight:600}

.cap-shot figcaption{
  display:block;margin-top:14px;
  font-size:12.5px;color:var(--text-3);line-height:1.5;
}

/* ---- Footer CTA ---- */
.cta-dark{
  background:var(--dark-bg);color:#fff;
  padding:120px 0 0;
  position:relative;
  overflow:hidden;
}
.cta-dark::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 500px at 90% 0%, rgba(41,69,240,.14), transparent 60%),
    radial-gradient(700px 400px at 0% 100%, rgba(41,69,240,.06), transparent 60%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:grid;grid-template-columns:1.6fr 1fr;gap:64px;align-items:end;
}
.cta-title{
  font-size:46px;line-height:1.18;letter-spacing:-.02em;
  font-weight:800;margin:0 0 24px;
}
.cta-text p{color:#b8bfd1;font-size:16px;line-height:1.85;margin:0 0 32px;max-width:540px}
.cta-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.cta-wechat{color:#b8bfd1;font-size:14.5px}
.cta-wechat b{color:#fff;font-weight:600;margin-left:6px}

/* ---- 合作方式 ---- */
.coop{
  grid-column:1 / -1;
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  margin-top:64px;padding-top:36px;
  border-top:1px solid var(--dark-line);
}
.coop-item{padding-right:56px}
.coop-item + .coop-item{border-left:1px solid var(--dark-line);padding-left:56px;padding-right:0}
.coop-label{
  display:block;font-size:12px;color:#7a819a;
  letter-spacing:.06em;font-weight:600;margin-bottom:10px;
}
.coop-item p{margin:0;color:#b8bfd1;font-size:14.5px;line-height:1.85}

.cta-qr{display:flex;justify-content:flex-end}
.qr-frame{
  width:180px;height:180px;
  background:#fff;color:var(--ink);
  border-radius:var(--r-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;text-align:center;padding:14px;
  gap:4px;
}
.qr-sub{color:var(--text-3);font-size:11px;font-weight:400;opacity:.8}

.foot{
  border-top:1px solid var(--dark-line);
  padding:32px 0;margin-top:80px;
  position:relative;
}
.foot-inner{
  display:flex;justify-content:space-between;align-items:center;
  color:var(--dark-text-2);font-size:13px;
  flex-wrap:wrap;gap:20px;
}
.foot-logo{
  height:56px;width:auto;display:block;
  /* invert dark text to white while preserving the G-mark brand colors */
  filter:invert(1) hue-rotate(180deg);
}
.foot-meta{display:flex;flex-direction:column;gap:4px;text-align:right}

/* ---- Responsive ---- */
@media (max-width:980px){
  :root{--pad:28px}
  .section{padding:80px 0}
  .section-title{font-size:36px}
  .hero-title{font-size:42px}
  .cta-title{font-size:34px}

  .nav-menu{display:none;position:absolute;top:64px;left:0;right:0;
    background:var(--cream);border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:14px 0;align-items:stretch;
    box-shadow:var(--shadow-md);
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:14px 28px;font-size:15px}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .hero{padding:64px 0 56px}
  /* demo: single-window loop, just tighten up */
  .demo{padding:16px}
  .demo-steps li::after{width:30px;margin:0 10px}
  .coop{grid-template-columns:1fr;gap:24px;padding-top:28px;margin-top:40px}
  .coop-item{padding-right:0}
  .coop-item + .coop-item{border-left:0;padding-left:0}

  .cap-card,.cap-card.reverse{grid-template-columns:1fr;padding:28px;gap:24px;min-width:0;overflow:hidden;position:relative}
  .cap-card.reverse .cap-text{order:1}
  .cap-card.reverse .cap-shot{order:2;min-width:0;max-width:100%;position:relative}
  .cap-text,.cap-shot{min-width:0;max-width:100%;position:relative}
  .cap-title{font-size:22px}
  .shot-frame{flex-direction:column;min-width:0;width:100%;max-width:100%;overflow:hidden}
  .shot-side{width:100%;padding:10px 0;flex-shrink:0;overflow:hidden}
  .shot-main{min-width:0;width:100%;max-width:100%;overflow:hidden}
  .shot-nav{display:flex;overflow-x:auto;gap:0;padding:0 10px;-webkit-overflow-scrolling:touch}
  .shot-nav li{white-space:nowrap;padding:6px 10px}
  .shot-nav li.ind{padding-left:10px}
  .shot-nav li.active{border-left:0;border-bottom:2px solid var(--blue);padding-left:10px}
  .shot-cards{grid-template-columns:1fr;min-width:0;max-width:100%}
  .shot-stat{min-width:0;max-width:100%;overflow:hidden}
  .shot-stat-h{flex-wrap:wrap}
  .badges{display:none}  /* too wide for narrow screens; restore at desktop */
  .shot-table{overflow-x:auto;max-width:100%;display:block;-webkit-overflow-scrolling:touch}
  .shot-table-h,.shot-table-row{font-size:11px;min-width:480px}
  .shot-table-h,.shot-table-row{grid-template-columns:1.6fr .4fr .4fr 1.2fr 1.2fr .7fr}
  .cta-inner{grid-template-columns:1fr;gap:32px;align-items:start}
  .cta-qr{justify-content:flex-start}
  .foot-inner{flex-direction:column;align-items:flex-start;gap:16px}
  .foot-meta{text-align:left}
}
@media (max-width:560px){
  :root{--pad:20px}
  .hero{padding:52px 0 44px}
  .hero-title{font-size:28px;line-height:1.3}
  .section-title,.cta-title{font-size:26px;line-height:1.3}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{justify-content:center}
  .demo{padding:14px;border-radius:18px}
  .demo-head{gap:12px}
  .demo-query{font-size:12px}
  .demo-steps{gap:0;margin:14px 0}
  .demo-steps li{font-size:11.5px}
  .demo-steps li::after{width:16px;margin:0 8px}
  .db-answer{font-size:12.5px;padding:11px 12px;line-height:1.8}
  .db-bubble{font-size:12.5px}
  .db-body{padding:14px 11px;gap:12px}
  .db-input{margin:0 11px;padding-left:13px}
  .trans-core{width:64px;height:64px}
  .trans-logo{width:30px;height:30px}
  .db-trans{gap:10px}
  .trans-s{font-size:11px}
  .pill{font-size:12px;padding:7px 14px}
  .hero-sub{font-size:14.5px}
  .section-lead{font-size:14.5px;margin-bottom:36px}
  .cap-card,.cap-card.reverse{padding:24px 20px}
  .shot-table-h,.shot-table-row{grid-template-columns:1.4fr .4fr .4fr 1fr 1fr .7fr;font-size:10.5px}
  .cta-inner{gap:24px}
  .qr-frame{width:160px;height:160px}
}