/* ============================================================
   车映 / AutoCC — cheying.cn landing
   Lightweight, responsive, bilingual. No framework.
   ============================================================ */

:root{
  --void:#08070C;
  --void-2:#0E0C14;
  --panel:#14111C;
  --panel-2:#1B1726;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.14);
  --ink:#F4F1FA;
  --ink-2:#B7B1C7;
  --ink-3:#7E7890;
  --pink:#FF2E93;
  --orange:#FF6A3D;
  --blue:#4D7CFF;
  --ok:#34D399;
  --grad:linear-gradient(120deg,#FF6A3D 0%,#FF2E93 100%);
  --grad-tri:linear-gradient(120deg,#FFB37A 0%,#FF6A3D 32%,#FF2E93 64%,#4D7CFF 100%);
  --grad-ai:linear-gradient(120deg,#4D7CFF 0%,#9B6BFF 100%);
  --r-sm:10px; --r:16px; --r-lg:24px; --r-xl:34px;
  --pad-x:clamp(20px,5vw,80px);
  --maxw:1200px;
  --shadow:0 24px 70px -30px rgba(0,0,0,.8);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:'Sora','IBM Plex Sans',system-ui,-apple-system,Segoe UI,Roboto,'PingFang SC','Microsoft YaHei',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}
:root.zh{ --font:'Noto Sans SC','IBM Plex Sans',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif; }

*{box-sizing:border-box}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} }
body{
  margin:0;
  /* clip not hidden — keeps position:sticky working inside */
  overflow-x:clip;
  background:var(--void);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.defs{position:absolute}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.pad-x{padding-left:var(--pad-x);padding-right:var(--pad-x)}
.cjk{font-family:'Noto Sans SC','PingFang SC',sans-serif}
.mono{font-family:var(--mono);font-size:.78em;letter-spacing:.02em}

.skip{position:fixed;left:-999px;top:8px;z-index:200;background:var(--pink);color:#fff;padding:8px 14px;border-radius:8px}
.skip:focus{left:12px}

/* gradient helpers */
.grad-text,.grad-tri,.signal-text{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.grad-tri{background:var(--grad-tri);-webkit-background-clip:text;background-clip:text}

/* ============================ NAV ============================ */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;transition:background .3s,backdrop-filter .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(8,7,12,.72);backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);border-bottom-color:var(--line)}
.nav-inner{height:68px;display:flex;align-items:center;gap:24px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.mark{border-radius:9px;overflow:hidden}
.wordmark{display:flex;flex-direction:column;line-height:1.04}
.wm-auto{font-weight:800;font-size:17px;letter-spacing:-.02em}
.wm-cn{font-family:'Noto Sans SC',sans-serif;font-weight:700;font-size:11px;color:var(--ink-3);letter-spacing:.32em}
.nav-links{display:flex;gap:30px;margin-left:14px;margin-right:auto}
.nav-links a{font-size:14.5px;color:var(--ink-2);font-weight:500;position:relative;padding:4px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--grad);transition:right .25s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{right:0}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-signin{font-size:14.5px;font-weight:600;color:var(--ink-2);padding:8px 4px;transition:color .2s}
.nav-signin:hover{color:var(--ink)}

.lang-toggle{display:flex;align-items:center;gap:2px;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:3px;cursor:pointer}
.lang-toggle .pill{font-size:12.5px;font-weight:600;color:var(--ink-3);padding:4px 11px;border-radius:999px;transition:.22s var(--ease);line-height:1}
.lang-toggle .pill.cjk{font-size:13px}
:root:not(.zh) .lang-toggle .pill[data-lang="en"],
:root.zh .lang-toggle .pill[data-lang="zh"]{background:var(--grad);color:#fff}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:14.5px;border-radius:999px;padding:10px 20px;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),box-shadow .25s,filter .2s,background .25s;white-space:nowrap;font-family:inherit}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 26px -10px rgba(255,46,147,.7)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 14px 36px -10px rgba(255,46,147,.85)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-2px)}
.btn-lg{padding:14px 26px;font-size:15.5px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--pink);box-shadow:0 0 10px var(--pink);flex-shrink:0}
.dot-white{background:#fff;box-shadow:0 0 10px rgba(255,255,255,.7)}

.hamburger{display:none;flex-direction:column;gap:5px;width:38px;height:38px;align-items:center;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:10px;cursor:pointer}
.hamburger span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s var(--ease)}
.nav.open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .hamburger span:nth-child(2){opacity:0}
.nav.open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-sheet{display:flex;flex-direction:column;gap:6px;padding:12px var(--pad-x) 22px;background:rgba(8,7,12,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-sheet[hidden]{display:none}
.nav-sheet a{padding:13px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);font-weight:500}
.nav-sheet a.btn{justify-content:center;margin-top:10px;border-bottom:none;color:#fff}

/* ============================ HERO ============================ */
.hero{position:relative;padding:128px 0 80px;overflow:hidden}
.two-col{display:grid;gap:clamp(36px,5vw,72px);align-items:center}
.hero-grid{grid-template-columns:1.05fr .95fr;max-width:var(--maxw);margin:0 auto}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0;opacity:.55}
.glow-pink{width:620px;height:620px;background:radial-gradient(circle,rgba(255,46,147,.5),transparent 68%);top:-220px;left:-160px}
.glow-blue{width:560px;height:560px;background:radial-gradient(circle,rgba(77,124,255,.42),transparent 68%);bottom:-260px;right:-180px}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:var(--ink-2);background:rgba(255,255,255,.04);border:1px solid var(--line);padding:7px 14px;border-radius:999px;margin-bottom:24px}
.hero-h{font-size:clamp(40px,6.4vw,74px);line-height:1.02;letter-spacing:-.035em;font-weight:800;margin:0 0 22px}
:root.zh .hero-h{letter-spacing:-.01em;line-height:1.12}
.lead{font-size:clamp(16px,1.7vw,19px);color:var(--ink-2);max-width:30em;margin:0 0 30px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.center-row{justify-content:center}
.stats{display:flex;gap:34px;margin-top:42px}
.stat-n{font-size:30px;font-weight:800;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-l{font-size:12.5px;color:var(--ink-3);margin-top:2px}

/* phone */
.hero-phone{position:relative;z-index:2;display:flex;justify-content:center}
.phone-float{position:relative;animation:float 6s var(--ease) infinite}
@keyframes float{0%,100%{transform:translateY(-9px)}50%{transform:translateY(9px)}}
.phone-glow{position:absolute;inset:-14% -8%;background:var(--grad);filter:blur(56px);opacity:.4;border-radius:50%;z-index:-1}
.phone{position:relative;width:clamp(220px,26vw,272px);aspect-ratio:9/19.5;border-radius:34px;background:linear-gradient(165deg,#181320,#0c0a12);border:1px solid var(--line-2);box-shadow:var(--shadow),inset 0 0 0 4px #000;overflow:hidden;padding:0}
.phone-foot{position:absolute;inset:0;background:
  radial-gradient(120% 60% at 50% 8%,rgba(255,106,61,.28),transparent 60%),
  radial-gradient(120% 70% at 50% 100%,rgba(77,124,255,.3),transparent 55%),
  linear-gradient(180deg,#241a2e,#0a0810);z-index:0}
.phone::before{content:"";position:absolute;top:11px;left:50%;transform:translateX(-50%);width:64px;height:6px;border-radius:6px;background:#000;z-index:5}
.phone-tc{position:absolute;top:30px;left:14px;display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;color:#fff;background:rgba(0,0,0,.45);padding:4px 9px;border-radius:999px;z-index:4}
.phone-cap{position:absolute;left:0;right:0;bottom:96px;text-align:center;font-weight:800;font-size:21px;line-height:1.25;letter-spacing:-.01em;text-shadow:0 2px 16px rgba(0,0,0,.7);z-index:4;padding:0 18px}
.cap-hl{background:var(--grad);padding:1px 8px;border-radius:7px;color:#fff;-webkit-text-fill-color:#fff;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.tl-mini{position:absolute;left:12px;right:12px;bottom:18px;display:flex;flex-direction:column;gap:6px;z-index:4}
.tl-row{display:flex;gap:4px;height:14px}
.seg{height:100%;border-radius:4px;background:rgba(255,255,255,.16);display:block}
.seg.grad{background:var(--grad)}
.seg.ai{background:var(--grad-ai);position:relative}
.tl-vo{height:8px;border-radius:4px;background:repeating-linear-gradient(90deg,rgba(255,255,255,.4) 0 2px,transparent 2px 5px)}

.scrollcue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--ink-3);z-index:2}
.sc-label{font-size:11px;letter-spacing:.28em;text-transform:uppercase}
.sc-mouse{width:22px;height:34px;border:1.5px solid var(--line-2);border-radius:12px;display:flex;justify-content:center;padding-top:6px}
.sc-wheel{width:3px;height:7px;border-radius:3px;background:var(--ink-2);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-4px)}40%{opacity:1}100%{opacity:0;transform:translateY(7px)}}

/* ============================ SECTION SHELL ============================ */
.section{padding:clamp(72px,10vw,128px) 0;position:relative}
.section-tight{padding:clamp(56px,8vw,104px) 0}
.center{max-width:760px;margin:0 auto 56px;text-align:center}
.center-lead{margin-left:auto;margin-right:auto}
.kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--pink);margin-bottom:16px}
.kicker.blue{color:var(--blue)}
.h2{font-size:clamp(28px,4.2vw,46px);line-height:1.08;letter-spacing:-.03em;font-weight:800;margin:0 0 18px}
:root.zh .h2{letter-spacing:-.01em;line-height:1.2}
.h3{font-size:clamp(20px,2.6vw,27px);line-height:1.2;letter-spacing:-.02em;font-weight:700;margin:0 0 12px}
.h3.big{font-size:clamp(24px,3.4vw,38px);margin-bottom:18px}

/* highlight cards */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:var(--maxw);margin:0 auto}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;transition:transform .3s var(--ease),border-color .3s,background .3s}
.card:hover{transform:translateY(-6px);border-color:var(--line-2);background:var(--panel-2)}
.card-ai{background:linear-gradient(165deg,rgba(77,124,255,.12),var(--panel));border-color:rgba(77,124,255,.28)}
.ic{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.ic-pink{background:rgba(255,46,147,.14);color:var(--pink)}
.ic-blue{background:rgba(77,124,255,.16);color:var(--blue)}
.card-t{font-weight:700;font-size:17px;margin-bottom:7px;letter-spacing:-.01em}
.card-b{font-size:14px;color:var(--ink-2);line-height:1.55}

/* ============================ SCROLLYTELLING ============================ */
/* overflow:clip (NOT hidden) — clips without creating a scroll container, so
   the .scrolly-sticky position:sticky inside still pins to the viewport. */
#pipeline{position:relative;overflow:clip;padding-bottom:40px}
.scrolly-head{margin-bottom:8px;padding-top:clamp(56px,8vw,96px)}
.scrolly{max-width:var(--maxw);margin:0 auto}
.scrolly-grid{display:grid;grid-template-columns:0.82fr 1fr;gap:clamp(30px,6vw,90px);align-items:start}
.scrolly-sticky{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;z-index:1}

.progress{display:flex;align-items:center;gap:14px;width:min(300px,72%)}
.progress-track{flex:1;height:5px;border-radius:5px;background:var(--panel-2);overflow:hidden}
.progress-bar{height:100%;width:14%;border-radius:5px;background:var(--grad);transition:width .55s var(--ease)}
.progress-num{font-family:var(--mono);font-size:12px;color:var(--ink-2);letter-spacing:.04em}

.phone-wrap{position:relative}
.phone-wrap .phone{width:clamp(228px,24vw,266px)}
/* layers */
.layer{position:absolute;left:12px;right:12px;transition:opacity .5s var(--ease),transform .5s var(--ease);z-index:3}
.layer[hidden]{display:none}
.layer:not(.on){opacity:0;pointer-events:none}
.layer.on{opacity:1}

.l-raw{top:50%;transform:translateY(-50%);display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.l-raw.on{transform:translateY(-50%) scale(1)}
.raw-h,.raw-s{font-family:var(--mono);font-size:11px;color:var(--ink-2);letter-spacing:.06em}
.raw-strip{display:flex;gap:8px}
.raw-strip i{width:42px;height:62px;border-radius:8px;background:linear-gradient(160deg,#2a2336,#15111d);border:1px solid var(--line-2);transform:rotate(var(--r));box-shadow:0 8px 18px -8px #000}

.l-hook{top:50%;transform:translateY(-50%);background:rgba(10,8,14,.78);backdrop-filter:blur(8px);border:1px solid rgba(255,46,147,.4);border-radius:16px;padding:18px 16px;box-shadow:0 16px 40px -16px rgba(255,46,147,.5)}
.hook-meta{display:flex;justify-content:space-between;margin-bottom:10px}
.hook-q{font-weight:700;font-size:16.5px;line-height:1.32;letter-spacing:-.01em}
.mono.pink{color:var(--pink)} .mono.ok{color:var(--ok)} .mono.mut{color:var(--ink-3)} .mono.blue{color:var(--blue)}

.l-cap{bottom:110px;text-align:center;font-weight:800;font-size:20px;line-height:1.25;padding:0 16px;text-shadow:0 2px 14px rgba(0,0,0,.7)}

.l-tl{bottom:16px;display:flex;flex-direction:column;gap:6px;background:rgba(8,7,12,.5);padding:10px;border-radius:12px;border:1px solid var(--line)}
.l-tl .tl-row{height:13px}
.tl-ai-row{height:13px}
.seg.ai i{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:9px;color:#fff}
.tl-cc{display:flex;gap:4px;height:9px}
.tl-cc span{height:100%;border-radius:3px;background:var(--ink-3)}
.tl-wave{display:flex;align-items:center;gap:2px;height:14px}
.tl-wave span{flex:1;border-radius:2px;background:var(--blue);opacity:.85;height:30%}
.tl-wave span:nth-child(2n){height:70%}.tl-wave span:nth-child(3n){height:100%}.tl-wave span:nth-child(4n){height:45%}.tl-wave span:nth-child(5n){height:85%}
.layer .sub{transition:opacity .45s var(--ease),transform .45s var(--ease)}
.layer .sub:not(.on){opacity:0}

.l-pub{top:50%;transform:translateY(-50%) scale(1);display:flex;flex-direction:column;align-items:center;gap:12px;background:rgba(10,8,14,.82);backdrop-filter:blur(8px);border:1px solid rgba(52,211,153,.4);border-radius:18px;padding:24px 18px}
.pub-check{width:54px;height:54px;border-radius:50%;background:rgba(52,211,153,.16);color:var(--ok);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700}
.pub-t{font-weight:700;font-size:16px}
.pub-chips{display:flex;gap:7px}
.pub-chips span{width:30px;height:30px;border-radius:9px;background:var(--panel-2);border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--ink-2)}

/* steps */
.scrolly-steps{display:flex;flex-direction:column}
.sstep{min-height:78vh;display:flex;flex-direction:column;justify-content:center;padding:24px 0;opacity:.32;transition:opacity .4s var(--ease)}
.sstep:first-child{min-height:62vh}
.sstep:last-child{min-height:70vh}
.sstep.active{opacity:1}
.step-num{font-family:var(--mono);font-weight:600;font-size:14px;width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;border:1px solid var(--line-2)}
.step-num.pink{color:var(--pink);background:rgba(255,46,147,.1);border-color:rgba(255,46,147,.3)}
.step-num.blue{color:var(--blue);background:rgba(77,124,255,.12);border-color:rgba(77,124,255,.34)}
.step-b{font-size:clamp(15px,1.7vw,17.5px);color:var(--ink-2);max-width:30em;line-height:1.6}

/* ============================ FEATURES ============================ */
.feat-row{max-width:var(--maxw);margin:0 auto;grid-template-columns:1fr 1fr;padding:clamp(40px,6vw,72px) 0}
.feat-b{font-size:clamp(15px,1.7vw,17.5px);color:var(--ink-2);margin:0 0 24px;line-height:1.62}
.bullets{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.bullets li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink)}
.b-mark{font-family:var(--mono);flex-shrink:0;margin-top:1px}
.b-mark.pink{color:var(--pink)} .b-mark.blue{color:var(--blue)}
.ord1{order:1}.ord2{order:2}

.feat-media{position:relative;display:flex;flex-direction:column;gap:12px;background:linear-gradient(165deg,var(--panel),var(--void-2));border:1px solid var(--line);border-radius:var(--r-lg);padding:24px}
.mock-hook{background:rgba(8,7,12,.6);border:1px solid rgba(255,46,147,.32);border-radius:14px;padding:16px}
.mh-meta{display:flex;gap:12px;margin-bottom:10px;align-items:center}
.mh-q{font-weight:700;font-size:18px;line-height:1.34;letter-spacing:-.01em}
.mock-var{font-size:13.5px;color:var(--ink-2);background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:11px;padding:12px 14px;display:flex;justify-content:space-between;gap:10px;align-items:center}

.mock-prompt{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-2);background:rgba(77,124,255,.08);border:1px solid rgba(77,124,255,.28);border-radius:12px;padding:13px 15px;font-family:var(--mono);line-height:1.5}
.mock-prompt .blue{color:var(--blue)}
.mock-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.gt{aspect-ratio:16/10;border-radius:12px;background:linear-gradient(150deg,#241c33,#120f1b);border:1px solid var(--line);position:relative;overflow:hidden}
.gt::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 70% 10%,rgba(77,124,255,.25),transparent 60%)}
.gt.sel{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.gt-tag{position:absolute;top:8px;left:8px;z-index:2;font-family:var(--mono);font-size:10px;color:#fff;background:var(--blue);padding:3px 7px;border-radius:6px}
.gt.gen{display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:22px;background:rgba(77,124,255,.08);border-style:dashed}

.voice-row{display:flex;align-items:center;gap:13px;background:rgba(8,7,12,.5);border:1px solid var(--line);border-radius:14px;padding:14px}
.va{width:42px;height:42px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;flex-shrink:0}
.vi{flex:1}.vn{font-weight:700;font-size:15px}
.wave{display:flex;align-items:center;gap:3px;height:30px}
.wave span{width:3px;border-radius:3px;background:var(--pink);animation:eq 1.1s var(--ease) infinite}
.wave span:nth-child(1){height:40%;animation-delay:0s}.wave span:nth-child(2){height:90%;animation-delay:.15s}.wave span:nth-child(3){height:60%;animation-delay:.3s}.wave span:nth-child(4){height:100%;animation-delay:.45s}.wave span:nth-child(5){height:50%;animation-delay:.6s}
@keyframes eq{0%,100%{transform:scaleY(.5)}50%{transform:scaleY(1)}}
.cc-list{display:flex;flex-direction:column;gap:8px}
.cc{display:flex;gap:12px;align-items:center;font-size:14px;color:var(--ink-2);background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:11px;padding:11px 14px}
.cc.active{color:var(--ink);border-color:rgba(255,46,147,.34);background:rgba(255,46,147,.06)}

/* ============================ DEVICE / PURA X ============================ */
.device{position:relative;overflow:hidden;padding:clamp(72px,10vw,128px) 0}
.glow-blue-c{width:760px;height:760px;background:radial-gradient(circle,rgba(77,124,255,.3),transparent 66%);top:50%;left:50%;transform:translate(-50%,-50%);opacity:.5}
.device-inner{max-width:var(--maxw);margin:0 auto;position:relative;z-index:2}
.device-frame{max-width:980px;margin:0 auto;border-radius:26px;padding:12px;background:linear-gradient(160deg,#2a2238,#0c0a12);border:1px solid var(--line-2);box-shadow:var(--shadow)}
.device-screen{position:relative;aspect-ratio:16/10;border-radius:18px;overflow:hidden;background:var(--void-2);display:flex;flex-direction:column;border:1px solid #000}
.notch{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:9px;height:9px;border-radius:50%;background:#000;border:1px solid #222;z-index:6}
.dv-top{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.dv-proj{font-family:var(--mono);font-size:12px;color:var(--ink-2)}
.dv-auto{margin-left:auto;font-size:11px;font-weight:600;color:#fff;background:var(--grad);padding:5px 11px;border-radius:999px}
.dv-work{flex:1;display:grid;grid-template-columns:88px 1fr 124px;min-height:0}
.dv-media{display:flex;flex-direction:column;gap:6px;padding:10px;border-right:1px solid var(--line);overflow:hidden}
.dv-media i{height:34px;border-radius:7px;background:linear-gradient(150deg,#241c33,#14101e);border:1px solid var(--line)}
.dv-media i.ai{background:linear-gradient(150deg,rgba(77,124,255,.3),rgba(77,124,255,.08));border-color:rgba(77,124,255,.4)}
.dv-stage{display:flex;align-items:center;justify-content:center;padding:14px;position:relative;background:radial-gradient(120% 90% at 50% 0%,rgba(255,106,61,.12),transparent 55%)}
.dv-preview{width:min(40%,108px);aspect-ratio:9/16;border-radius:12px;background:linear-gradient(170deg,#241a2e,#0a0810);border:1px solid var(--line-2);position:relative;box-shadow:0 14px 34px -16px #000;overflow:hidden}
.dv-cap{position:absolute;left:0;right:0;bottom:14px;text-align:center;font-weight:800;font-size:12px;padding:0 8px;text-shadow:0 2px 8px #000}
.dv-insp{padding:10px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:9px;background:rgba(255,255,255,.015)}
.dv-clip{font-size:10px}
.dv-slider{height:5px;border-radius:5px;background:var(--panel-2);overflow:hidden}
.dv-slider i{display:block;height:100%;background:var(--grad);border-radius:5px}
.dv-chips{display:flex;gap:6px;margin-top:2px}
.dv-chips span{width:22px;height:13px;border-radius:999px;background:var(--panel-2);border:1px solid var(--line-2);position:relative}
.dv-chips span.on{background:var(--grad)}
.dv-tl{padding:10px 14px 14px;border-top:1px solid var(--line);background:rgba(0,0,0,.25)}
.dv-tl-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px}
.chip{padding:3px 9px;border:1px solid var(--line-2);border-radius:999px;font-size:10px}
.dv-tracks{position:relative;display:flex;flex-direction:column;gap:6px}
.dt{display:flex;gap:4px;height:14px}
.dt .seg{height:100%}
.seg.neutral{background:rgba(255,255,255,.16)}
.seg.dt-hook{background:var(--grad)}
.seg.cc{background:var(--ink-3)}
.seg.vo{background:linear-gradient(90deg,rgba(77,124,255,.5),rgba(77,124,255,.2));position:relative}
.seg.vo::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.35) 0 2px,transparent 2px 6px)}
.dv-play{position:absolute;left:38%;top:-4px;bottom:-4px;width:2px;background:var(--pink);box-shadow:0 0 10px var(--pink)}
.dv-play i{position:absolute;top:-3px;left:-3px;width:8px;height:8px;border-radius:50%;background:var(--pink)}

/* ============================ CHANNELS ============================ */
.ch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:var(--maxw);margin:0 auto}
.ch{display:flex;align-items:center;gap:15px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;transition:transform .25s var(--ease),border-color .25s,background .25s}
.ch:hover{transform:translateY(-4px);border-color:var(--line-2);background:var(--panel-2)}
.ch-mono{width:46px;height:46px;border-radius:13px;background:linear-gradient(150deg,var(--panel-2),#0e0b15);border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;color:var(--ink);flex-shrink:0}
.ch-mono.cjk{font-size:20px;font-weight:700}
.ch-n{font-weight:700;font-size:15.5px}
.ch-en{font-weight:500;font-size:12px;color:var(--ink-3)}
.ch-s{font-size:12.5px;color:var(--ink-3);margin-top:2px}

/* ============================ CTA ============================ */
.cta-card{position:relative;overflow:hidden;max-width:var(--maxw);margin:0 auto;border-radius:var(--r-xl);border:1px solid var(--line-2);background:linear-gradient(160deg,rgba(255,46,147,.1),rgba(77,124,255,.08),var(--panel));padding:clamp(48px,7vw,84px) clamp(24px,5vw,64px);text-align:center}
.glow-cta{width:600px;height:600px;background:radial-gradient(circle,rgba(255,46,147,.4),transparent 65%);top:-200px;left:50%;transform:translateX(-50%);opacity:.6}
.cta-body{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center}
.cta-mark{margin-bottom:24px;border-radius:16px}
.cta-card .lead{margin-bottom:32px}

/* ============================ FOOTER ============================ */
.footer{display:flex;align-items:center;gap:14px;flex-wrap:wrap;max-width:var(--maxw);margin:0 auto;padding-top:36px;padding-bottom:48px;border-top:1px solid var(--line);color:var(--ink-3);font-size:13.5px}
.ft-wm{font-weight:800;font-size:16px;color:var(--ink)}
.ft-cn{font-family:'Noto Sans SC',sans-serif;font-weight:700;letter-spacing:.2em;color:var(--ink-2)}
.ft-dom{color:var(--ink-3)}
.ft-copy{margin-left:auto}

/* ============================ REVEAL ANIMATIONS ============================ */
.rv,.rv-l,.rv-r,.rv-sc{opacity:0;transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s);will-change:transform,opacity}
.rv{transform:translateY(26px)}
.rv-l{transform:translateX(-30px)}
.rv-r{transform:translateX(30px)}
.rv-sc{transform:scale(.96)}
.rv.in,.rv-l.in,.rv-r.in,.rv-sc.in{opacity:1;transform:none}
/* hero intro */
.hin{opacity:0;transform:translateY(20px);animation:hin .8s var(--ease) forwards}
.hero-copy .hin:nth-child(1){animation-delay:.05s}
.hero-copy .hin:nth-child(2){animation-delay:.14s}
.hero-copy .hin:nth-child(3){animation-delay:.23s}
.hero-copy .hin:nth-child(4){animation-delay:.32s}
.hero-copy .hin:nth-child(5){animation-delay:.41s}
.hero-phone.hin{animation-delay:.3s}
@keyframes hin{to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  .rv,.rv-l,.rv-r,.rv-sc,.hin{opacity:1!important;transform:none!important;animation:none!important;transition:none!important}
  .phone-float,.sc-wheel,.wave span{animation:none!important}
  .layer{transition:opacity .2s linear!important}
}

/* ============================ RESPONSIVE ============================ */
@media (max-width:1000px){
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .ch-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-signin{display:none}
  .hamburger{display:flex}
  .hero{padding-top:108px}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-copy{display:flex;flex-direction:column;align-items:center}
  .lead{margin-left:auto;margin-right:auto}
  .cta-row{justify-content:center}
  .stats{justify-content:center}
  .hero-phone{order:-1;margin-bottom:10px}
  .scrollcue{display:none}

  /* scrollytelling → mobile: phone pins at top, steps flow under */
  .scrolly-grid{grid-template-columns:1fr;gap:0}
  .scrolly-sticky{height:auto;position:sticky;top:60px;padding:14px 0 18px;background:linear-gradient(180deg,var(--void) 72%,transparent);gap:14px;margin-bottom:4px}
  .phone-wrap .phone{width:200px}
  .sstep{min-height:64vh;text-align:left;align-items:flex-start}
  .sstep:first-child{min-height:30vh;padding-top:6px}

  .feat-row{grid-template-columns:1fr;gap:28px}
  .feat-media{order:2!important}
  .feat-copy{order:1!important}
  .feat-copy{text-align:left}
}
@media (max-width:560px){
  :root{--pad-x:18px}
  .cards-4{grid-template-columns:1fr}
  .ch-grid{grid-template-columns:1fr}
  .stats{gap:22px;flex-wrap:wrap}
  .hero-h{font-size:clamp(34px,11vw,46px)}
  .btn-lg{padding:13px 20px;font-size:14.5px}
  .cta-row .btn{flex:1;min-width:140px}
  .footer{flex-direction:column;align-items:flex-start;gap:10px}
  .ft-copy{margin-left:0}
  .device-screen{aspect-ratio:auto;min-height:340px}
  .dv-work{grid-template-columns:60px 1fr}
  .dv-insp{display:none}
  .phone-wrap .phone{width:178px}
  .scrolly-sticky{top:58px}
}