/* 宣羽工作台 · 官网发布页
   Paper & ink: warm paper ground, deep ink text, feather-blue accent, gold highlight, forest green for Form Studio. */

@font-face{font-family:"XuanYu Hand";src:url("./assets/hand.otf") format("opentype");font-display:swap}
@font-face{font-family:"Handlee";src:url("./assets/handlee.ttf") format("truetype");font-display:swap}
@font-face{font-family:"XuanYu Wordmark";src:url("./assets/wordmark.otf") format("opentype");font-display:swap}

:root{
  --paper:#f5f1e8;
  --paper-2:#ede7da;
  --card:#fffdf8;
  --ink:#14213d;
  --ink-2:#3a4659;
  --muted:#6e7684;
  --line:#ddd5c5;
  --line-soft:#e8e1d3;
  --blue:#1f6bd6;
  --blue-deep:#1d3f73;
  --gold:#e9a21a;
  --gold-soft:#f6d58f;
  --green:#2f7a55;
  --green-deep:#0f2a20;
  --mint:#bfe6cf;
  --night:#0e1729;

  --sans:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  --hand:"XuanYu Hand","Handlee",cursive;
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Consolas,monospace;

  --ease:cubic-bezier(.2,.7,.2,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --radius:18px;
  --gutter:clamp(16px,4vw,40px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;interpolate-size:allow-keywords}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
/* paper grain */
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .38 0 0 0 0 .28 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
::selection{background:var(--gold-soft);color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.hand{font-family:var(--hand);font-weight:400;letter-spacing:.02em}
.skip{position:fixed;left:16px;top:-60px;z-index:100;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:10px;text-decoration:none;transition:top .2s}
.skip:focus{top:12px}

/* ---------- buttons ---------- */
.btn{--bg:transparent;--fg:var(--ink);--bd:transparent;position:relative;isolation:isolate;overflow:hidden;display:inline-flex;align-items:center;gap:12px;
  padding:12px 20px;border-radius:999px;border:1px solid var(--bd);background:var(--bg);color:var(--fg);
  font-size:14px;font-weight:600;letter-spacing:.02em;text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform .35s var(--ease-out),box-shadow .35s var(--ease-out),color .3s,border-color .3s}
.btn i{font-style:normal;display:inline-block;transition:transform .35s var(--ease-out)}
.btn:hover i{transform:translate(2px,-2px)}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;background:var(--fill,var(--blue));transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease-out)}
.btn:hover::before{transform:scaleX(1)}
.btn-sm{padding:9px 16px;font-size:13px;gap:10px}
.btn-xs{padding:7px 14px;font-size:12px;gap:8px}
.btn-lg{padding:15px 26px;font-size:15px}
.btn-ink{--bg:var(--ink);--fg:var(--paper);--fill:var(--blue);box-shadow:0 10px 24px -12px rgba(20,33,61,.6)}
.btn-ink:hover{box-shadow:0 16px 30px -12px rgba(31,107,214,.55)}
.btn-green{--bg:var(--green);--fg:#fff;--fill:#23603f}
.btn-ghost{--bd:var(--line);--fg:var(--ink);--fill:var(--card);background:rgba(255,253,248,.55);backdrop-filter:blur(6px)}
.btn-ghost:hover{border-color:var(--ink-2)}
.btn-mint{--bg:var(--mint);--fg:var(--green-deep);--fill:#fff}
.btn-light{--bg:var(--paper);--fg:var(--ink);--fill:var(--gold-soft)}
.btn-outline-light{--bd:rgba(245,241,232,.35);--fg:var(--paper);--fill:rgba(245,241,232,.12)}
.btn-outline-light:hover{border-color:rgba(245,241,232,.7)}
.link-arrow{color:var(--mint);font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;padding-bottom:3px;transition:background-size .4s var(--ease-out)}
.link-arrow:hover{background-size:100% 1px}
.link-arrow i{font-style:normal}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .4s,box-shadow .4s,backdrop-filter .4s}
.nav.scrolled{background:rgba(245,241,232,.78);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);box-shadow:0 1px 0 var(--line-soft)}
.nav-inner{max-width:1280px;margin:0 auto;padding:14px var(--gutter);display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:34px;height:34px;transition:transform .6s var(--ease-out)}
.brand:hover img{transform:rotate(-14deg) translateY(-2px)}
.brand-word{font-family:"XuanYu Wordmark",var(--sans);font-size:22px;letter-spacing:.06em;color:var(--ink)}
.nav-links{display:flex;gap:4px;margin:0 auto}
.nav-links a{position:relative;padding:8px 14px;font-size:14px;color:var(--ink-2);text-decoration:none;border-radius:999px;transition:color .25s,background .25s}
.nav-links a:hover{color:var(--ink);background:rgba(20,33,61,.05)}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{content:"";position:absolute;left:50%;bottom:2px;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--blue)}
.nav-cta{display:flex;align-items:center;gap:8px}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--card);cursor:pointer;position:relative}
.menu-toggle span{position:absolute;left:12px;right:12px;height:1.5px;background:var(--ink);transition:transform .3s var(--ease-out)}
.menu-toggle span:first-child{top:16px}.menu-toggle span:last-child{top:22px}
.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(3px) rotate(45deg)}
.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-3px) rotate(-45deg)}
.mobile-menu{display:grid;padding:8px var(--gutter) 18px;background:rgba(245,241,232,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.mobile-menu[hidden]{display:none}
.mobile-menu a{padding:12px 4px;border-bottom:1px solid var(--line-soft);text-decoration:none;font-size:15px}
.mobile-menu a:last-child{border-bottom:0}

/* ---------- shared section heads ---------- */
.section{padding:clamp(88px,12vw,150px) 0}
.sec-head{max-width:720px;margin-bottom:clamp(44px,6vw,72px)}
.sec-head-center{margin-inline:auto;text-align:center}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--blue);text-transform:uppercase;margin-bottom:20px}
.kicker-light{color:var(--mint)}
.sec-head h2,.forms-head h2,.faq-head h2{font-size:clamp(32px,4.6vw,56px);line-height:1.18;font-weight:700;letter-spacing:-.025em}
h2 em{font-style:normal;color:var(--blue-deep);
  background:linear-gradient(transparent 62%,rgba(233,162,26,.32) 62%,rgba(233,162,26,.32) 92%,transparent 92%) 0 0/0% 100% no-repeat;
  transition:background-size 1.1s .35s var(--ease-out)}
.in h2 em,h2.in em{background-size:100% 100%}
.sec-lead{margin-top:22px;font-size:17px;color:var(--ink-2);max-width:560px}
.sec-head-center .sec-lead{margin-inline:auto}

/* reveal on scroll (only when JS is on) */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:120px 0 90px;overflow:hidden}
.hero-rules{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:repeating-linear-gradient(to bottom,transparent 0 47px,rgba(31,107,214,.07) 47px 48px);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 60% 45%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 80% 70% at 60% 45%,#000 20%,transparent 75%)}
.hero-rules::after{content:"";position:absolute;top:0;bottom:0;left:max(24px,calc(50% - 560px));width:1px;background:rgba(200,80,70,.18)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,72px);align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:7px 14px 7px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,253,248,.7);font-size:13px;color:var(--ink-2);margin-bottom:28px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 0 rgba(31,107,214,.5);animation:ping 2.4s infinite}
@keyframes ping{70%{box-shadow:0 0 0 8px rgba(31,107,214,0)}100%{box-shadow:0 0 0 0 rgba(31,107,214,0)}}
h1{position:relative;display:flex;flex-direction:column;gap:4px;font-weight:600}
.h1-typed{font-size:clamp(26px,3.4vw,44px);letter-spacing:-.02em;color:var(--muted);line-height:1.3}
.h1-hand{font-size:clamp(46px,5.6vw,88px);line-height:1.12;color:var(--blue-deep);margin-left:-.04em;white-space:nowrap}
.h1-stroke{width:min(78%,440px);height:22px;margin-top:-8px;overflow:visible}
.h1-stroke path{fill:none;stroke:var(--gold);stroke-width:5;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;opacity:.85}
.hero.go .h1-stroke path{animation:draw 1.1s 1.35s var(--ease-out) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.hero-sub{margin-top:26px;font-size:clamp(16px,1.4vw,18px);color:var(--ink-2);line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-stats{display:flex;gap:clamp(20px,4vw,48px);margin:48px 0 0;padding-top:26px;border-top:1px dashed var(--line)}
.hero-stats dt{font-size:14px;color:var(--ink-2)}
.hero-stats b{font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin-right:2px}
.hero-stats dd{margin:2px 0 0;font-size:13px;color:var(--muted)}

/* char-by-char writing */
[data-write] .ch{display:inline-block;opacity:0;clip-path:inset(-20% 100% -20% 0);transform:translateY(6px)}
[data-write].written .ch{opacity:1;clip-path:inset(-20% -10% -20% 0);transform:none;transition:opacity .25s,clip-path .55s var(--ease),transform .55s var(--ease);transition-delay:var(--cd,0s)}
.no-js [data-write] .ch{opacity:1;clip-path:none;transform:none}

/* hero stage */
.hero-stage{position:relative;height:min(620px,72vh);min-height:480px;perspective:1600px}
.stage-tilt{position:absolute;inset:0;transform-style:preserve-3d;transform:rotateX(var(--rx,6deg)) rotateY(var(--ry,-10deg));transition:transform .8s var(--ease-out)}
.sheet{position:absolute;border-radius:4px;box-shadow:0 1px 1px rgba(20,33,61,.05),0 24px 50px -18px rgba(20,33,61,.35),0 50px 80px -40px rgba(20,33,61,.3)}
.sheet-back{width:52%;top:10%;opacity:0;transition:opacity 1s,transform 1.4s var(--ease-out)}
.sheet-b1{left:0;transform:translate3d(30%,4%,-60px) rotate(-3deg)}
.sheet-b2{right:0;transform:translate3d(-30%,6%,-40px) rotate(3deg)}
.hero.go .sheet-b1{opacity:1;transform:translate3d(0,4%,-60px) rotate(-9deg)}
.hero.go .sheet-b2{opacity:1;transform:translate3d(0,8%,-40px) rotate(7deg)}
.sheet-live{left:50%;top:50%;width:min(390px,74%);aspect-ratio:1200/1540;translate:-50% -50%;padding:7% 8%;background:var(--card);
  --lh:9.6cqi;container-type:inline-size;transform:translateZ(40px) rotate(-1.5deg);display:flex;flex-direction:column}
.live-head{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:max(9px,2.6cqi);letter-spacing:.12em;color:var(--muted);height:10cqi;margin-top:-6px}
.live-status{display:inline-flex;align-items:center;gap:6px;color:var(--blue)}
.live-status i{width:6px;height:6px;border-radius:50%;background:currentColor;animation:blink 1.2s infinite}
.hero.done .live-status{color:var(--green)}
.hero.done .live-status i{animation:none}
@keyframes blink{50%{opacity:.25}}
.live-body{flex:1;overflow:hidden;font-size:5.3cqi;line-height:var(--lh);color:var(--blue-deep);background:repeating-linear-gradient(to bottom,transparent 0 calc(var(--lh) - 1px),#e4ded1 calc(var(--lh) - 1px) var(--lh));border-top:1px solid #e4ded1}
.live-body p{white-space:nowrap}
.live-title{text-align:center;font-size:1.3em}
.live-sign{text-align:right;margin-top:4px}
.live-body .ch{display:inline-block;opacity:0;transform:translateY(3px) scale(.96);filter:blur(1.5px);transition:opacity .28s,transform .4s var(--ease-out),filter .4s}
.live-body .ch.on{opacity:1;transform:none;filter:none}
.quill{position:absolute;left:0;top:0;width:17cqi;height:17cqi;pointer-events:none;opacity:0;transform-origin:25.8% 91.8%;
  transition:opacity .4s,translate .16s linear;filter:drop-shadow(0 8px 10px rgba(20,33,61,.25));z-index:3}
.quill.on{opacity:1;animation:scribble .22s infinite alternate ease-in-out}
@keyframes scribble{from{rotate:-2deg}to{rotate:3deg}}
.float-chip{position:absolute;display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:rgba(255,253,248,.88);backdrop-filter:blur(8px);
  border:1px solid var(--line-soft);font-size:12px;color:var(--ink-2);box-shadow:0 12px 30px -16px rgba(20,33,61,.4);transform:translateZ(90px);animation:bob 6s ease-in-out infinite}
.float-chip b{color:var(--ink);font-size:14px}
.chip-a{left:-2%;bottom:14%}
.chip-b{right:0;top:9%;animation-delay:-3s}
.sw{width:12px;height:12px;border-radius:50%;background:var(--c);box-shadow:inset 0 0 0 2px rgba(255,255,255,.5)}
@keyframes bob{50%{translate:0 -10px}}
.scroll-cue{position:absolute;left:50%;bottom:28px;width:26px;height:42px;margin-left:-13px;border:1.5px solid var(--line);border-radius:14px}
.scroll-cue span{position:absolute;left:50%;top:8px;width:3px;height:8px;margin-left:-1.5px;border-radius:2px;background:var(--ink-2);animation:cue 1.8s infinite var(--ease)}
@keyframes cue{0%{opacity:0;transform:translateY(-3px)}40%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;border-block:1px solid var(--line);background:var(--card);padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;width:max-content;animation:marquee 46s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{display:inline-flex;align-items:center;gap:40px;padding-right:40px;font-size:18px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.marquee span::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- works / compare ---------- */
.compare-layout{display:grid;grid-template-columns:minmax(0,min(500px,calc((100svh - 140px) * .78))) minmax(0,1fr);gap:clamp(32px,6vw,88px);align-items:center}
.compare{position:relative;aspect-ratio:1200/1540;border-radius:10px;overflow:hidden;background:var(--card);user-select:none;touch-action:pan-y;
  box-shadow:0 0 0 1px var(--line-soft),0 40px 80px -40px rgba(20,33,61,.45)}
.compare:has(.cmp-range:focus-visible){outline:2px solid var(--blue);outline-offset:4px}
.cmp-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cmp-before-wrap{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.cmp-tag{position:absolute;top:16px;padding:6px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(20,33,61,.82);color:var(--paper);backdrop-filter:blur(6px);pointer-events:none;transition:opacity .3s}
.cmp-tag-l{left:16px}
.cmp-tag-r{right:16px;background:rgba(31,107,214,.9)}
.compare[data-edge=left] .cmp-tag-l,.compare[data-edge=right] .cmp-tag-r{opacity:0}
.cmp-handle{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;margin-left:-1px;background:var(--paper);box-shadow:0 0 0 1px rgba(20,33,61,.15);pointer-events:none}
.cmp-knob{position:absolute;top:50%;left:50%;width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;gap:6px;
  box-shadow:0 10px 24px -8px rgba(20,33,61,.6),0 0 0 6px rgba(245,241,232,.55);transition:transform .3s var(--ease-out)}
.cmp-knob i{font-style:normal;font-size:18px;line-height:1}
.compare:hover .cmp-knob,.compare.dragging .cmp-knob{transform:scale(1.08)}
.cmp-range{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;-webkit-appearance:none;appearance:none;background:transparent}
.cmp-range::-webkit-slider-thumb{-webkit-appearance:none;width:52px;height:100vh}
.cmp-range::-moz-range-thumb{width:52px;height:1000px;border:0}
.compare.swap .cmp-img{animation:swap .6s var(--ease-out)}
@keyframes swap{from{opacity:.2;filter:blur(6px);transform:scale(1.02)}}

.scene-side{display:flex;flex-direction:column;gap:28px;align-items:flex-start}
.scene-tabs{display:flex;flex-direction:column;width:100%;border-top:1px solid var(--line)}
.scene-tabs button{position:relative;display:flex;align-items:center;gap:18px;padding:20px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-size:20px;font-weight:600;color:var(--muted);cursor:pointer;transition:color .3s,padding .4s var(--ease-out)}
.scene-tabs button span{font-family:var(--mono);font-size:12px;font-weight:400;color:var(--muted)}
.scene-tabs button::after{content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--blue);transition:width .6s var(--ease-out)}
.scene-tabs button:hover{color:var(--ink);padding-left:10px}
.scene-tabs button[aria-selected=true]{color:var(--ink);padding-left:10px}
.scene-tabs button[aria-selected=true] span{color:var(--blue)}
.scene-tabs button[aria-selected=true]::after{width:100%}
.scene-card{position:relative;width:100%;padding:28px 28px 26px;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden}
.scene-num{position:absolute;right:18px;top:4px;font-size:84px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1px var(--line);font-variant-numeric:tabular-nums}
.scene-note{position:relative;font-size:22px;font-weight:600;line-height:1.55;white-space:pre-line}
.scene-meta{position:relative;margin-top:14px;font-size:13px;color:var(--muted)}
.scene-card.swap .scene-note,.scene-card.swap .scene-meta,.scene-card.swap .scene-num{animation:rise .6s var(--ease-out) both}
.scene-card.swap .scene-meta{animation-delay:.08s}
@keyframes rise{from{opacity:0;transform:translateY(12px)}}

/* ---------- workspace modes ---------- */
.modes{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(32px,6vw,96px);align-items:start}
.modes-stage{position:sticky;top:calc(50vh - 220px)}
.stage-frame{background:var(--card);border:1px solid var(--line-soft);border-radius:22px;box-shadow:0 40px 80px -40px rgba(20,33,61,.35);overflow:hidden}
.frame-bar{display:flex;align-items:center;gap:6px;padding:14px 18px;border-bottom:1px solid var(--line-soft);font-size:12px;color:var(--muted)}
.frame-bar i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.frame-bar span{margin-left:auto;font-weight:600;color:var(--ink-2)}
.stage-art{position:relative;aspect-ratio:240/156;margin:4% 5%}
.mode-art{position:absolute;inset:0;width:100%;height:100%;opacity:0;transform:scale(.96) translateY(10px);transition:opacity .6s var(--ease-out),transform .8s var(--ease-out)}
.mode-art.is-on{opacity:1;transform:none}
.mode-art .ink-draw{stroke-dasharray:1;stroke-dashoffset:1}
.mode-art.is-on .ink-draw{animation:draw 1.8s .3s var(--ease) forwards}
.mode-art.is-on .art-arrow{animation:nudge 1.6s ease-in-out infinite}
.mode-art.is-on .photo-frame{animation:pulse 2.2s ease-in-out infinite}
.mode-art.is-on .edit-box{animation:drift 3.2s ease-in-out infinite}
.mode-art.is-on .art-cursor{animation:drift 3.2s ease-in-out infinite}
.mode-art.is-on .scan-line{animation:scan 2.6s ease-in-out infinite}
@keyframes nudge{50%{transform:translateX(4px)}}
@keyframes pulse{50%{opacity:.35}}
@keyframes drift{50%{transform:translate(-4px,-3px)}}
@keyframes scan{0%,100%{transform:translateY(0)}50%{transform:translateY(58px)}}
.stage-progress{height:3px;background:var(--line-soft)}
.stage-progress i{display:block;height:100%;width:25%;background:linear-gradient(90deg,var(--blue),var(--gold));transition:width .6s var(--ease-out)}

.mode-steps{list-style:none;margin:0;padding:0}
.mode-step{position:relative;min-height:56vh;padding:40px 0 40px 28px;border-left:1px solid var(--line);opacity:.32;transition:opacity .5s}
.mode-step::before{content:"";position:absolute;left:-1px;top:40px;width:2px;height:0;background:var(--blue);transition:height .7s var(--ease-out)}
.mode-step.is-active{opacity:1}
.mode-step.is-active::before{height:90px}
.step-idx{font-family:var(--mono);font-size:13px;color:var(--blue)}
.step-kicker{margin-top:14px;font-size:13px;color:var(--muted);letter-spacing:.06em}
.mode-step h3{margin-top:6px;font-size:clamp(28px,3vw,38px);font-weight:700;letter-spacing:-.02em}
.step-title{margin:8px 0 14px;font-size:18px;color:var(--blue-deep);font-weight:600}
.mode-step p{color:var(--ink-2);max-width:460px}
.flow{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0;padding:0;counter-reset:f}
.flow li{counter-increment:f;display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 6px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:13px;color:var(--ink-2)}
.flow li::before{content:counter(f);display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--ink);color:var(--paper);font-size:11px;font-weight:700}
.mode-step .foot{margin-top:16px;font-size:13px;color:var(--muted)}
.step-art{display:none}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.cell{position:relative;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);padding:28px;overflow:hidden;
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out),border-color .3s}
.cap:hover{transform:translateY(-4px);box-shadow:0 26px 50px -30px rgba(20,33,61,.4);border-color:var(--line)}
.cap::after{content:"";position:absolute;left:28px;right:28px;bottom:0;height:2px;background:linear-gradient(90deg,var(--blue),var(--gold));transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease-out)}
.cap:hover::after{transform:scaleX(1)}
.cap-no{font-family:var(--mono);font-size:12px;color:var(--blue)}
.cap h3{margin:18px 0 10px;font-size:20px;font-weight:700}
.cap p{font-size:14px;color:var(--ink-2);line-height:1.8}
.cap small{display:block;margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);font-size:12px;color:var(--muted)}

.lab{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;gap:20px;background:var(--ink);color:var(--paper);border:0;padding:30px}
.lab-top{display:flex;justify-content:space-between;align-items:center}
.lab-top h3{font-size:20px;font-weight:700}
.live{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--mint)}
.live i{width:7px;height:7px;border-radius:50%;background:currentColor;animation:blink 1.4s infinite}
.lab-paper{flex:1;min-height:230px;display:flex;align-items:center;justify-content:center;padding:28px 34px;border-radius:12px;
  background:var(--card) repeating-linear-gradient(to bottom,transparent 0 55px,#e4ded1 55px 56px);box-shadow:inset 0 0 0 1px rgba(0,0,0,.04)}
.lab-text{font-size:34px;line-height:1.6;color:#1d3f73;text-align:center;transition:color .4s,font-size .25s}
.lab-text .ch{display:inline-block;transition:transform .45s var(--ease-out)}
.lab-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px 22px}
.lab-controls label{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13px;color:rgba(245,241,232,.75)}
.lab-controls output{font-family:var(--mono);color:var(--paper)}
.lab-row{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:12px}
.lab .btn-ghost{--fg:var(--paper);--bd:rgba(245,241,232,.25);--fill:rgba(245,241,232,.12);background:transparent}
input[type=range]{width:100%;height:22px;margin:0;background:transparent;-webkit-appearance:none;appearance:none;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;background:rgba(245,241,232,.2)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-6.5px;border-radius:50%;background:var(--gold);border:3px solid var(--ink);box-shadow:0 0 0 1px var(--gold)}
input[type=range]::-moz-range-track{height:3px;border-radius:3px;background:rgba(245,241,232,.2)}
input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:var(--gold);border:3px solid var(--ink)}
.swatches{display:flex;gap:10px}
.swatch{width:30px;height:30px;border-radius:50%;border:0;background:var(--c);cursor:pointer;box-shadow:0 0 0 2px var(--ink),0 0 0 3px rgba(245,241,232,.25);transition:box-shadow .3s,transform .3s var(--ease-out)}
.swatch:hover{transform:scale(1.08)}
.swatch.is-on{box-shadow:0 0 0 2px var(--ink),0 0 0 4px var(--gold)}
.lab-note{font-size:12px;color:rgba(245,241,232,.5)}

.ai{grid-column:span 2;display:flex;gap:28px;align-items:flex-start;background:linear-gradient(135deg,#e9f1fc,var(--card) 60%);border-color:#d6e3f5}
.ai-badge{flex:none;display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--blue);color:#fff;font-size:12px;font-weight:700}
.ai-badge::before{content:"✦";font-size:11px}
.ai h3{font-size:19px;font-weight:700;margin-bottom:8px}
.ai p{font-size:14px;color:var(--ink-2)}

/* ---------- forms ---------- */
.forms{padding-top:clamp(40px,6vw,80px)}
.forms-panel{position:relative;overflow:hidden;border-radius:32px;padding:clamp(28px,6vw,80px);color:#e7f1ea;
  background:radial-gradient(900px 500px at 90% -10%,rgba(126,210,160,.18),transparent 60%),radial-gradient(700px 500px at -10% 110%,rgba(31,107,214,.16),transparent 60%),var(--green-deep)}
.forms-panel::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(191,230,207,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(191,230,207,.06) 1px,transparent 1px);background-size:44px 44px;
  -webkit-mask-image:linear-gradient(#000,transparent 70%);mask-image:linear-gradient(#000,transparent 70%)}
.forms-head{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:end}
.forms-head h2 em{color:var(--mint);background-image:linear-gradient(transparent 62%,rgba(191,230,207,.2) 62%,rgba(191,230,207,.2) 92%,transparent 92%)}
.forms-intro p{color:rgba(231,241,234,.75);margin-bottom:24px}
.map-demo{position:relative;display:grid;grid-template-columns:1fr 150px 1fr;gap:20px;align-items:center;margin:clamp(40px,6vw,64px) 0}
.demo-win{min-width:0;background:#fbfdfb;color:#28402f;border-radius:14px;padding:20px;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.demo-form{transform:rotate(-1.2deg)}
.demo-sheet{transform:rotate(1.2deg)}
.win-bar{display:flex;align-items:center;gap:8px;font-size:12px;color:#557060;margin-bottom:18px}
.win-bar i{width:7px;height:7px;border-radius:50%;background:#3fa36f}
.win-bar small{margin-left:auto;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:#8aa194}
.demo-form h4{text-align:center;font-size:18px;color:#24382b}
.demo-sub{text-align:center;font-size:11px;color:#8a998f;margin:6px 0 14px}
.map-demo table{width:100%;border-collapse:collapse;font-size:13px;text-align:center}
.map-demo td,.map-demo th{border:1px solid #cfdcd3;padding:9px 4px;font-weight:400;white-space:nowrap}
.map-demo th{background:#f1f6f2;font-size:11px;color:#5c7465}
.target{height:40px;background:#f3faf5;box-shadow:inset 0 0 0 1px #9ccaa9;color:#1d3f73;font-size:20px;line-height:1;transition:background .4s}
.target.filled{background:#fff}
.target .ch{display:inline-block;animation:inkin .5s var(--ease-out) both}
@keyframes inkin{from{opacity:0;filter:blur(2px);transform:translateY(4px)}}
.source{background:#e3f3e8;color:#23633d;font-weight:700;transition:background .3s,box-shadow .3s}
.source.pick{background:#bfe6cf;box-shadow:inset 0 0 0 2px #2f7a55}
.demo-cap{display:block;margin-top:12px;font-size:11px;color:#8a998f}
.sheet-range{display:flex;justify-content:space-between;margin-top:14px;font-size:12px;color:#3c8a5b}
.sheet-range span{color:#8a998f}
.map-link{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;color:var(--mint)}
.map-link svg{width:100%;height:40px;overflow:visible}
.flow-line{fill:none;stroke:var(--mint);stroke-width:1.5;stroke-dasharray:4 6;animation:flow 1s linear infinite}
.flow-head{fill:none;stroke:var(--mint);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
@keyframes flow{to{stroke-dashoffset:-20}}
.map-link strong{font-size:14px;font-variant-numeric:tabular-nums}
.map-link small{font-size:11px;opacity:.7}
.fly{position:fixed;z-index:60;pointer-events:none;padding:4px 10px;border-radius:8px;background:#2f7a55;color:#fff;font-size:13px;font-weight:700;box-shadow:0 10px 20px -8px rgba(0,0,0,.5)}
.forms-features{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.forms-features article{padding-top:22px;border-top:1px solid rgba(191,230,207,.2)}
.forms-features span{font-family:var(--mono);font-size:12px;color:var(--mint)}
.forms-features h3{margin:12px 0 8px;font-size:17px;font-weight:700;color:#fff}
.forms-features p{font-size:13px;color:rgba(231,241,234,.68);line-height:1.8}
.bridge{position:relative;display:flex;align-items:center;gap:24px;margin-top:48px;padding:24px 28px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid rgba(191,230,207,.14)}
.bridge-mark{flex:none;display:flex}
.bridge-mark i{width:34px;height:34px;border-radius:50%;mix-blend-mode:screen}
.bridge-mark .b{background:#3d86e8}
.bridge-mark .g{background:#3fa36f;margin-left:-12px}
.bridge h3{font-size:17px;color:#fff;margin-bottom:4px}
.bridge p{font-size:13px;color:rgba(231,241,234,.7)}
.bridge .link-arrow{margin-left:auto}

/* ---------- journey ---------- */
.steps3-wrap{position:relative}
.steps-line{position:absolute;left:0;right:0;top:26px;width:100%;height:20px;overflow:visible}
.steps-line path{fill:none;stroke:var(--line);stroke-width:2;stroke-dasharray:1;stroke-dashoffset:1;vector-effect:non-scaling-stroke}
.steps3-wrap.in .steps-line path{animation:draw 1.8s var(--ease) forwards}
.steps3{position:relative;list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:0;padding:0;text-align:center}
.s-no{display:grid;place-items:center;width:56px;height:56px;margin:0 auto 22px;border-radius:50%;background:var(--card);border:1px solid var(--line);font-family:var(--hand);font-size:26px;color:var(--blue-deep);box-shadow:0 0 0 8px var(--paper)}
.steps3 h3{font-size:20px;font-weight:700;margin-bottom:8px}
.steps3 p{font-size:14px;color:var(--ink-2);max-width:280px;margin:0 auto}

/* ---------- faq ---------- */
.faq{padding-top:0}
.faq-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:clamp(32px,6vw,96px);align-items:start}
.faq-head{position:sticky;top:120px}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{position:relative;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 4px;cursor:pointer;list-style:none;font-size:18px;font-weight:600;transition:color .25s}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--blue-deep)}
.faq-list summary i{position:relative;flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);transition:background .3s,border-color .3s,transform .4s var(--ease-out)}
.faq-list summary i::before,.faq-list summary i::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:1.5px;margin:-.75px 0 0 -5.5px;background:var(--ink);transition:transform .4s var(--ease-out),background .3s}
.faq-list summary i::after{transform:rotate(90deg)}
.faq-list details[open] summary i{background:var(--ink);border-color:var(--ink);transform:rotate(180deg)}
.faq-list details[open] summary i::before,.faq-list details[open] summary i::after{background:var(--paper)}
.faq-list details[open] summary i::after{transform:rotate(0)}
.faq-list details::details-content{block-size:0;overflow:hidden;transition:block-size .45s var(--ease-out),content-visibility .45s allow-discrete}
.faq-list details[open]::details-content{block-size:auto}
.ans p{padding:0 60px 26px 4px;color:var(--ink-2);font-size:15px}

/* ---------- author contact ---------- */
.contact{background:var(--paper-2);padding:clamp(80px,10vw,130px) 0}
.contact-card{display:grid;grid-template-columns:1fr 280px;align-items:center;gap:clamp(34px,8vw,120px);max-width:860px}
.contact-card h2{font-size:clamp(48px,7vw,88px);line-height:1.12}
.contact-name{margin-top:26px;font-family:var(--mono);color:var(--ink-2);font-size:15px}
.contact-qr{margin:0;text-align:center}
.contact-qr img{display:block;width:220px;height:auto;margin:0 auto;border-radius:14px;box-shadow:0 12px 28px rgba(14,23,41,.12);background:#fff}
.contact-qr figcaption{margin-top:12px;color:var(--ink-2);font-size:13px}

/* ---------- closing ---------- */
.closing{position:relative;overflow:hidden;background:var(--night);color:var(--paper);padding:clamp(100px,14vw,170px) 0;text-align:center;
  background-image:repeating-linear-gradient(to bottom,transparent 0 63px,rgba(245,241,232,.06) 63px 64px),radial-gradient(800px 400px at 50% 110%,rgba(31,107,214,.35),transparent 70%)}
.closing-inner{display:flex;flex-direction:column;align-items:center}
.closing-logo{width:64px;height:64px;margin-bottom:26px;animation:bob 6s ease-in-out infinite}
.closing-hand{font-size:clamp(52px,9vw,120px);line-height:1.2;color:var(--paper)}
.closing p{margin-top:14px;color:rgba(245,241,232,.65);font-size:17px}
.closing-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:40px}

/* ---------- footer ---------- */
.footer{background:var(--night);color:rgba(245,241,232,.6);border-top:1px solid rgba(245,241,232,.08);font-size:13px}
.footer-inner{display:flex;align-items:center;gap:24px;padding-top:26px;padding-bottom:26px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--paper)}
.footer nav{display:flex;gap:20px;margin-left:auto}
.footer nav a{text-decoration:none;transition:color .2s}
.footer nav a:hover{color:var(--paper)}
.copy{font-family:var(--mono);font-size:12px}

/* ---------- dialog ---------- */
dialog{width:min(820px,calc(100% - 32px));max-height:calc(100dvh - 32px);padding:0;border:0;border-radius:18px;background:var(--card);color:var(--ink);overflow:hidden;box-shadow:0 40px 100px -20px rgba(0,0,0,.5)}
dialog[open]{display:flex;flex-direction:column;animation:pop .45s var(--ease-out)}
dialog::backdrop{background:rgba(14,23,41,.62);backdrop-filter:blur(6px)}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.98)}}
.zoom-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px 14px 24px;border-bottom:1px solid var(--line-soft)}
.zoom-head h2{font-size:16px;font-weight:700}
.zoom-body{overflow:auto}
.close-dialog{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--card);font-size:22px;line-height:1;cursor:pointer;transition:transform .3s var(--ease-out),background .2s}
.close-dialog:hover{transform:rotate(90deg);background:var(--paper-2)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-links{display:none}
  .nav-cta{margin-left:auto}
  .menu-toggle{display:block}
}
@media (max-width:1080px){
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lab{grid-row:auto}
  .ai{grid-column:1/-1}
  .forms-features{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .hero{min-height:auto;padding-top:110px}
  .hero-grid{grid-template-columns:1fr}
  .hero-stage{height:auto;min-height:0;aspect-ratio:1/1;max-height:560px;margin-top:8px}
  .compare-layout{grid-template-columns:1fr}
  .compare{max-width:560px;width:100%;margin:0 auto}
  .scene-side{order:-1}
  .scene-tabs{flex-direction:row;border-top:0;gap:6px}
  .scene-tabs button{flex:1 1 0;min-width:0;justify-content:center;gap:6px;padding:11px 8px;border:1px solid var(--line);border-radius:999px;font-size:14px}
  .scene-tabs button::after{display:none}
  .scene-tabs button[aria-selected=true],.scene-tabs button:hover{padding-left:8px;background:var(--ink);color:var(--paper);border-color:var(--ink)}
  .scene-tabs button[aria-selected=true] span{color:var(--gold-soft)}
  .scene-tabs button span{display:none}
  .scene-card{display:none}
  #zoom-trigger{display:none}
  .modes{grid-template-columns:1fr}
  .modes-stage{display:none}
  .mode-step{min-height:0;opacity:1;padding:32px 0 32px 22px}
  .mode-step::before{height:60px}
  .step-art{display:block;margin-top:24px;padding:14px;background:var(--card);border:1px solid var(--line-soft);border-radius:16px}
  .step-art .mode-art{position:static;opacity:1;transform:none}
  .step-art .ink-draw{stroke-dashoffset:0}
  .forms-head{grid-template-columns:1fr}
  .map-demo{grid-template-columns:1fr}
  .demo-form,.demo-sheet{transform:none}
  .map-link svg{width:90px;transform:rotate(-90deg)}
  .demo-sheet{order:-1}
  .steps3{grid-template-columns:1fr;gap:40px}
  .steps-line{display:none}
  .faq-grid{grid-template-columns:1fr}
  .faq-head{position:static}
}
@media (max-width:650px){
  .contact-card{grid-template-columns:1fr;text-align:center}
  .contact-qr{order:-1}
  .contact-qr img{width:min(220px,70vw)}
}
@media (max-width:640px){
  body{font-size:15px}
  .nav-cta .btn{display:none}
  .brand-word{font-size:19px}
  .hero-stats{gap:18px}
  .hero-stats b{font-size:24px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .chip-a{left:0;bottom:6%}
  .chip-b{right:0;top:2%}
  .bento{grid-template-columns:1fr}
  .lab,.ai{grid-column:auto}
  .lab{padding:22px}
  .lab-paper{padding:20px 16px;min-height:180px}
  .lab-controls{grid-template-columns:1fr}
  .ai{flex-direction:column;gap:16px}
  .forms-panel{border-radius:22px}
  .forms-features{grid-template-columns:1fr;gap:20px}
  .bridge{flex-wrap:wrap}
  .bridge .link-arrow{margin-left:0}
  .ans p{padding-right:8px}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:14px}
  .footer nav{margin-left:0;flex-wrap:wrap;gap:14px}
  .map-demo td,.map-demo th{padding:8px 2px;font-size:12px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0s!important}
  .js .reveal{opacity:1;transform:none}
  .marquee-track{animation:none}
  [data-write] .ch,.live-body .ch{opacity:1!important;clip-path:none!important;transform:none!important;filter:none!important}
  .h1-stroke path,.mode-art .ink-draw,.steps-line path{stroke-dashoffset:0}
  .quill{display:none}
}

/* =====================================================================
   Round 2 — feature showcases
   ===================================================================== */

/* reading progress: an ink line along the top */
.read-progress{position:fixed;inset:0 0 auto;height:3px;z-index:70;pointer-events:none}
.read-progress i{display:block;height:100%;width:100%;transform-origin:left;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--blue),var(--gold));box-shadow:0 0 12px rgba(31,107,214,.35)}


/* ---------- font gallery ---------- */
.fonts{padding-bottom:clamp(60px,8vw,110px);overflow:hidden}
.font-rows{display:grid;gap:16px;padding:8px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.font-track{display:flex;gap:16px;width:max-content;animation:marquee var(--dur,60s) linear infinite}
.font-track.rev{animation-direction:reverse}
.font-rows:hover .font-track{animation-play-state:paused}
.font-card{position:relative;flex:none;width:300px;margin:0;padding:18px 18px 14px;background:var(--card);border:1px solid var(--line-soft);border-radius:16px;
  transition:transform .45s var(--ease-out),box-shadow .45s var(--ease-out),border-color .3s}
.font-card:hover{transform:translateY(-6px) rotate(-.6deg);box-shadow:0 24px 44px -26px rgba(20,33,61,.45);border-color:var(--line)}
.font-card .fc-img{height:62px;display:flex;align-items:center;overflow:hidden;border-bottom:1px dashed var(--line);margin-bottom:12px}
.font-card img{max-height:58px;width:auto;max-width:100%;object-fit:contain;object-position:left center}
.font-card figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.font-card b{font-size:15px}
.font-card span{font-size:12px;color:var(--muted);white-space:nowrap}
.font-card .fc-lang{position:absolute;top:12px;right:12px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;padding:2px 7px;border-radius:999px;background:rgba(31,107,214,.1);color:var(--blue)}
.font-card.en .fc-lang{background:rgba(233,162,26,.16);color:#9a6a0c}
.font-legend{display:flex;flex-wrap:wrap;gap:22px;align-items:center;margin-top:26px;font-size:13px;color:var(--ink-2)}
.font-legend span{display:inline-flex;align-items:center;gap:8px}
.lg{width:10px;height:10px;border-radius:3px}
.lg-zh{background:var(--blue)}.lg-en{background:var(--gold)}
.font-hint{margin-left:auto;color:var(--muted)}

/* ---------- playground shell ---------- */
.play-shell{background:var(--card);border:1px solid var(--line-soft);border-radius:28px;box-shadow:0 50px 90px -60px rgba(20,33,61,.45);overflow:hidden}
.play-tabs{position:relative;display:flex;gap:4px;padding:10px;border-bottom:1px solid var(--line-soft);overflow-x:auto;scrollbar-width:none}
.play-tabs::-webkit-scrollbar{display:none}
.play-tabs button{position:relative;z-index:1;flex:1 0 auto;display:flex;align-items:center;justify-content:center;gap:10px;padding:13px 18px;border:0;border-radius:14px;background:none;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--muted);transition:color .3s}
.play-tabs button b{font-family:var(--mono);font-size:11px;font-weight:400;opacity:.7}
.play-tabs button:hover{color:var(--ink)}
.play-tabs button[aria-selected=true]{color:var(--paper)}
.play-ink{position:absolute;z-index:0;top:10px;bottom:10px;left:0;width:0;border-radius:14px;background:var(--ink);transition:transform .55s var(--ease-out),width .55s var(--ease-out)}
.play-panel{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);min-height:520px}
.play-panel[hidden]{display:none}
.play-panel.is-on .play-copy>*{animation:rise .6s var(--ease-out) both}
.play-panel.is-on .play-copy>*:nth-child(2){animation-delay:.05s}
.play-panel.is-on .play-copy>*:nth-child(3){animation-delay:.1s}
.play-panel.is-on .play-copy>*:nth-child(4){animation-delay:.15s}
.play-panel.is-on .play-stage>*{animation:stagein .7s var(--ease-out) both}
@keyframes stagein{from{opacity:0;transform:translateY(16px) scale(.985)}}
.play-copy{display:flex;flex-direction:column;align-items:flex-start;gap:18px;padding:clamp(26px,4vw,48px)}
.play-copy h3{font-size:clamp(24px,2.4vw,30px);font-weight:700;letter-spacing:-.02em}
.play-copy>p{color:var(--ink-2);font-size:15px}
.play-stage{position:relative;display:flex;align-items:center;justify-content:center;padding:clamp(18px,3vw,40px);background:
  radial-gradient(circle at 1px 1px,rgba(20,33,61,.09) 1px,transparent 0) 0 0/18px 18px,var(--paper-2)}
.chip-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.chip{padding:8px 15px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:13px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:all .3s var(--ease-out)}
.chip:hover{border-color:var(--ink-2);color:var(--ink)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.cg-label{font-size:12px;color:var(--muted);margin-right:4px}
.dot-swatch{width:24px;height:24px;border-radius:50%;border:0;background:var(--c);cursor:pointer;box-shadow:0 0 0 2px var(--card),0 0 0 3px var(--line);transition:box-shadow .3s}
.dot-swatch.is-on{box-shadow:0 0 0 2px var(--card),0 0 0 4px var(--c)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px}
.hint{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.hint-dot{width:10px;height:10px;border-radius:50%;border:2px solid #2fae6c;background:#fff;animation:ping-g 1.8s infinite}
@keyframes ping-g{0%{box-shadow:0 0 0 0 rgba(47,174,108,.5)}80%,100%{box-shadow:0 0 0 8px rgba(47,174,108,0)}}

/* 01 paper switcher */
.pp-sheet{--rule:#b5473d;--cell:40px;--cols:11;--pad:36px;position:relative;width:calc(var(--cell) * var(--cols) + var(--pad) * 2);max-width:100%;padding:var(--pad);border-radius:4px;background:#fffdf7;
  box-shadow:0 1px 2px rgba(20,33,61,.06),0 26px 50px -24px rgba(20,33,61,.35);transition:background-color .5s}
.pp-text{--lh:var(--cell);width:calc(var(--cell) * var(--cols));max-width:100%;font-size:calc(var(--cell) * .64);line-height:var(--lh);color:var(--blue-deep);min-height:calc(var(--cell) * 6)}
.pp-text .ch{display:inline-block;text-align:center}
.pp-sheet[data-paper=lined] .pp-text,.pp-sheet[data-paper=letter] .pp-text,.pp-sheet[data-paper=kraft] .pp-text{
  background:repeating-linear-gradient(to bottom,transparent 0 calc(var(--lh) - 1px),color-mix(in srgb,var(--rule) 55%,transparent) calc(var(--lh) - 1px) var(--lh));border-top:1px solid color-mix(in srgb,var(--rule) 55%,transparent)}
.pp-sheet[data-paper=grid] .pp-text .ch{width:var(--cell)}
.pp-sheet[data-paper=grid] .pp-text{background:
  linear-gradient(color-mix(in srgb,var(--rule) 50%,transparent) 1px,transparent 1px) 0 0/var(--cell) var(--cell),
  linear-gradient(90deg,color-mix(in srgb,var(--rule) 50%,transparent) 1px,transparent 1px) 0 0/var(--cell) var(--cell);
  box-shadow:inset -1px -1px 0 color-mix(in srgb,var(--rule) 50%,transparent)}
.pp-sheet[data-paper=letter]{padding-left:calc(var(--pad) + 14px)}
.pp-sheet[data-paper=letter]::before{content:"";position:absolute;top:0;bottom:0;left:calc(var(--pad) + 2px);width:5px;border-inline:1px solid color-mix(in srgb,var(--rule) 70%,transparent)}
.pp-sheet[data-paper=letter]::after{content:"";position:absolute;left:var(--pad);right:var(--pad);top:calc(var(--pad) / 2 - 2px);height:4px;border-block:1px solid color-mix(in srgb,var(--rule) 45%,transparent)}
.pp-sheet[data-paper=dots] .pp-text{background:radial-gradient(circle at calc(var(--cell) / 2) calc(var(--cell) - 2px),color-mix(in srgb,var(--rule) 70%,transparent) 1.4px,transparent 1.8px) 0 0/var(--cell) var(--cell)}
.pp-sheet[data-paper=kraft]{background:#d6bd93 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .25 0 0 0 0 .12 0 0 0 .22 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.pp-sheet[data-paper=kraft] .pp-text{color:#2b2418}
.pp-sheet.swap .ch{animation:inkin .5s var(--ease-out) both;animation-delay:calc(var(--i) * 12ms)}

/* 02 corrections */
.fix-sheet{width:min(100%,520px);padding:34px 36px 26px;border-radius:4px;background:#fffdf7;box-shadow:0 26px 50px -24px rgba(20,33,61,.35)}
.fix-line{--lh:84px;font-size:36px;line-height:var(--lh);color:var(--blue-deep);white-space:nowrap;background:linear-gradient(transparent calc(var(--lh) - 1px),#e2dbcd calc(var(--lh) - 1px)) 0 0/100% var(--lh)}
.fx-wrong{position:relative;display:inline-block}
.fx-word{display:inline-block;transition:opacity .5s,filter .5s}
.fx-svg{position:absolute;left:-10%;top:18%;width:120%;height:64%;overflow:visible;pointer-events:none}
.fx-svg path,.fx-svg ellipse{fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;vector-effect:non-scaling-stroke}
.fx-svg .draw{animation:draw var(--dur,.7s) var(--ease) forwards;animation-delay:var(--delay,0s)}
.fx-fix{position:absolute;left:50%;bottom:66%;font-size:.74em;line-height:1;white-space:nowrap;translate:-50% 0;rotate:-5deg;opacity:0;color:var(--blue-deep)}
.fx-fix.show{animation:fixin .6s var(--ease-out) forwards}
@keyframes fixin{from{opacity:0;filter:blur(3px);transform:translateY(6px)}to{opacity:1;filter:none;transform:none}}
.fx-wrong[data-style=erase] .fx-word{opacity:.2;filter:blur(.8px)}
.fx-wrong[data-style=erase] .fx-fix{left:0;bottom:auto;top:0;font-size:1em;line-height:var(--lh);translate:0 0;rotate:0deg}
.fix-cap{margin-top:14px;font-size:12px;color:var(--muted)}

/* 03 perspective */
.warp-stage{position:relative;width:100%;max-width:680px;aspect-ratio:910/640;border-radius:16px;overflow:hidden;background:#2b1f16;touch-action:none;user-select:none;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.warp-bg{position:absolute;inset:-30px;background:url("./assets/photos/v7-folded-sheet.jpg") center/cover;filter:blur(22px) brightness(.5) saturate(1.2)}
.warp-photo,.warp-text{position:absolute;left:0;top:0;transform-origin:0 0;max-width:none}
.warp-photo{width:910px;height:598px}
.warp-text{width:300px;height:420px;padding:30px 26px;font-size:30px;line-height:44px;color:#1d3f73;mix-blend-mode:multiply;white-space:nowrap}
.warp-text .wt{text-align:center}
.warp-text .ws{text-align:right;font-size:24px}
.warp-quad{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.warp-quad polygon{fill:rgba(63,191,127,.05);transition:fill .5s,stroke .5s;stroke:#3fbf7f;stroke-width:1.5;stroke-dasharray:6 5;animation:flow 1.2s linear infinite}
.warp-h{position:absolute;left:0;top:0;width:22px;height:22px;margin:-11px 0 0 -11px;padding:0;border-radius:50%;border:3px solid #2fae6c;background:#fff;cursor:grab;touch-action:none;
  box-shadow:0 4px 10px rgba(0,0,0,.35);transition:transform .2s}
.warp-h::after{content:"";position:absolute;inset:-12px;border-radius:50%}
.warp-h:hover,.warp-h.drag{transform:scale(1.25)}
.warp-h.drag{cursor:grabbing}
.warp-stage.fitted .warp-quad polygon{fill:transparent;stroke:rgba(123,224,172,.55)}

/* 04 line detection */
.lines-stage{--h:380;position:relative;width:100%;max-width:560px;aspect-ratio:910/620;border-radius:12px;overflow:hidden;background:#eef3f7;box-shadow:0 26px 50px -24px rgba(20,33,61,.4)}
.lines-stage img{position:absolute;left:0;top:0;width:100%;height:auto}
.lines-overlay{position:absolute;inset:0}
.ln{position:absolute;left:15.9%;right:4.5%;height:0;border-top:2px solid #20a86b;transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease-out)}
.ln.on{transform:scaleX(1)}
.ln b{position:absolute;right:calc(100% + 6px);top:-9px;font-family:var(--mono);font-size:9px;font-weight:400;color:#fff;background:#20a86b;padding:1px 5px;border-radius:4px;opacity:0;transition:opacity .3s .2s}
.ln.on b{opacity:1}
.ln-text{position:absolute;left:18%;font-size:clamp(14px,2.6vw,21px);line-height:1;color:#1d3f73;white-space:nowrap;transform:translateY(-100%);padding-bottom:3px}
.write-area{position:absolute;left:15.2%;right:3.8%;top:13.5%;bottom:-2%;border:1.5px dashed #20a86b;border-radius:4px;background:rgba(32,168,107,.04);opacity:0;transition:opacity .5s}
.write-area.on{opacity:1}
.lines-beam{position:absolute;left:0;right:0;top:0;height:90px;transform:translateY(-100%);pointer-events:none;
  background:linear-gradient(to bottom,transparent,rgba(31,107,214,.18) 85%,rgba(31,107,214,.55));border-bottom:2px solid #1f6bd6;opacity:0}
.lines-stage.scanning .lines-beam{opacity:1;animation:beam 2.2s var(--ease) forwards}
@keyframes beam{to{transform:translateY(calc(var(--h) * 1px))}}
.scan-stats{display:flex;gap:28px;margin:4px 0 0}
.scan-stats dt{font-size:12px;color:var(--muted)}
.scan-stats dd{margin:0;font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}

/* 05 OCR replace */
.ocr-doc{position:relative;width:min(100%,480px);padding:34px 34px 24px;background:#fff;border-radius:4px;color:#23262b;font-family:"SimSun","Songti SC",serif;box-shadow:0 26px 50px -24px rgba(20,33,61,.35);overflow:hidden}
.ocr-row{display:flex;align-items:flex-end;gap:14px;min-height:56px;border-bottom:1px solid #d9d9d9;padding:10px 0 6px}
.ocr-title{justify-content:center;border-bottom:2px solid #23262b;font-size:22px;font-weight:700;letter-spacing:.2em}
.ocr-foot{justify-content:flex-end;border-bottom:0;font-size:12px;color:#666;min-height:40px}
.ocr-label{flex:none;width:44px;font-size:15px;color:#555}
.ocr-field{position:relative;flex:1;min-width:0;font-size:17px}
.ocr-print{position:relative;display:inline-block;padding:2px 4px;border-radius:3px;transition:opacity .5s,filter .5s,box-shadow .4s,background .4s}
.ocr-print::after{content:attr(data-tag);position:absolute;left:-1px;bottom:calc(100% + 3px);padding:1px 6px;border-radius:3px;font:600 10px/1.5 var(--sans);letter-spacing:.04em;color:#fff;white-space:nowrap;opacity:0;transform:translateY(4px);transition:opacity .3s,transform .3s}
.ocr-print.boxed{box-shadow:0 0 0 1.5px var(--bx)}
.ocr-print.boxed::after{opacity:1;transform:none;background:var(--bx)}
.ocr-print[data-role=keep]{--bx:#9aa1ab}
.ocr-print[data-role=swap]{--bx:var(--blue)}
.ocr-print[data-role=swap].boxed{background:rgba(31,107,214,.06)}
.ocr-print.gone{opacity:0;filter:blur(4px)}
.ocr-print.gone::after{opacity:0}
.ocr-hand{position:absolute;left:4px;bottom:0;font-family:var(--hand);font-size:1.45em;line-height:1.2;color:#1d3f73;white-space:nowrap;pointer-events:none}
.ocr-legend{display:flex;gap:18px;margin-top:14px;font:12px var(--sans);color:#777}
.ocr-legend span{display:inline-flex;align-items:center;gap:6px}
.ocr-legend i{width:12px;height:12px;border-radius:3px;border:1.5px solid}
.ocr-legend .k{border-color:#9aa1ab}.ocr-legend .s{border-color:var(--blue);background:rgba(31,107,214,.1)}
.ocr-doc .scanline{position:absolute;left:0;right:0;top:0;height:3px;background:var(--blue);box-shadow:0 0 18px 4px rgba(31,107,214,.35);animation:ocrscan 1.1s var(--ease) forwards}
@keyframes ocrscan{from{top:0}to{top:100%}}
.ocr-steps{display:flex;flex-direction:column;gap:8px;width:100%;max-width:280px}
.ocr-step{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--card);font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;text-align:left;transition:all .3s var(--ease-out)}
.ocr-step b{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--paper-2);font-size:12px}
.ocr-step:disabled{opacity:.45;cursor:not-allowed}
.ocr-step.done:disabled{opacity:.8}
.ocr-step.is-next{border-color:var(--ink);box-shadow:0 10px 20px -14px rgba(20,33,61,.6)}
.ocr-step.is-next b{background:var(--ink);color:var(--paper)}
.ocr-step.done b{background:var(--green);color:#fff}

/* lab density & footer note */
.footer-note{padding-bottom:22px;color:rgba(245,241,232,.4);font-size:12px}
.lab-controls{grid-template-columns:repeat(2,minmax(0,1fr))}

@media (max-width:900px){
  .play-panel{grid-template-columns:1fr;min-height:0}
  .play-copy{padding:24px 22px 8px}
  .play-stage{padding:22px 16px 26px}
  .play-tabs button{flex:0 0 auto;padding:11px 14px;font-size:14px}
  .ocr-steps{flex-direction:row;flex-wrap:wrap;max-width:none}
  .ocr-step{flex:1 1 auto;padding:10px 12px;font-size:13px}
  .font-hint{margin-left:0}
}
@media (max-width:640px){
  .pp-sheet{--cell:26px;--pad:16px}
  .fix-sheet{padding:24px 18px 18px}
  .fix-line{--lh:62px;font-size:26px}
  .font-card{width:240px}
  .ocr-doc{padding:24px 18px 18px}
  .ocr-field{font-size:15px}
  .lab-controls{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .font-track{animation:none}
  .font-rows{overflow-x:auto}
}

/* =====================================================================
   Round 3 — visual refresh: ambient light, section textures, margin notes,
   real-interface showcase. Fills the empty right side of section heads and
   gives each band its own surface instead of one flat paper tone.
   ===================================================================== */

@property --a1{syntax:"<color>";inherits:true;initial-value:rgba(246,213,143,.55)}
@property --a2{syntax:"<color>";inherits:true;initial-value:rgba(150,186,235,.45)}
@property --a3{syntax:"<color>";inherits:true;initial-value:rgba(170,215,190,.34)}

/* ambient light: three slow, soft pools of colour under the paper grain */
.ambient{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;
  transition:--a1 1.6s var(--ease),--a2 1.6s var(--ease),--a3 1.6s var(--ease)}
.ambient i{position:absolute;width:72vmax;height:72vmax;border-radius:50%;will-change:transform}
.ambient i:nth-child(1){left:-24vmax;top:-30vmax;background:radial-gradient(closest-side,var(--a1),transparent);animation:amb1 34s ease-in-out infinite alternate}
.ambient i:nth-child(2){right:-30vmax;top:4vh;background:radial-gradient(closest-side,var(--a2),transparent);animation:amb2 42s ease-in-out infinite alternate}
.ambient i:nth-child(3){left:14vw;bottom:-44vmax;background:radial-gradient(closest-side,var(--a3),transparent);animation:amb3 50s ease-in-out infinite alternate}
@keyframes amb1{to{transform:translate(18vw,14vh) scale(1.15)}}
@keyframes amb2{to{transform:translate(-16vw,22vh) scale(.9)}}
@keyframes amb3{to{transform:translate(20vw,-12vh) scale(1.1)}}
/* tone follows the section in view (set by site.js) */
.ambient[data-tone=gold]{--a1:rgba(246,206,120,.6);--a2:rgba(244,184,140,.36);--a3:rgba(200,220,170,.3)}
.ambient[data-tone=blue]{--a1:rgba(190,212,245,.55);--a2:rgba(150,186,235,.5);--a3:rgba(246,213,143,.32)}
.ambient[data-tone=green]{--a1:rgba(170,220,190,.5);--a2:rgba(150,200,220,.4);--a3:rgba(246,213,143,.3)}
.ambient[data-tone=rose]{--a1:rgba(246,190,170,.45);--a2:rgba(200,190,240,.38);--a3:rgba(246,213,143,.34)}

/* tighter rhythm: less dead air between bands */
.section{position:relative;isolation:isolate;padding:clamp(72px,9vw,124px) 0}
.section>.wrap{position:relative}

/* hero: a warm glow behind the paper stack */
.hero-stage::before{content:"";position:absolute;inset:-8% -12% -4% -6%;z-index:-1;border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side at 52% 50%,rgba(246,213,143,.55),rgba(190,212,245,.35) 55%,transparent);filter:blur(10px)}

/* margin notes: big hollow numeral + a handwritten aside on the right */
.sec-deco{position:absolute;right:var(--gutter);top:-18px;display:flex;flex-direction:column;align-items:flex-end;pointer-events:none;user-select:none}
.sec-deco b{font:800 clamp(120px,14vw,210px)/.82 var(--sans);letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.5px rgba(31,107,214,.22);
  background:linear-gradient(180deg,rgba(31,107,214,.1),rgba(233,162,26,.06) 60%,transparent 85%);-webkit-background-clip:text;background-clip:text}
.sec-deco span{position:relative;display:flex;align-items:flex-end;gap:8px;margin:6px 6% 0 0;font-family:var(--hand);font-size:clamp(20px,1.9vw,27px);color:var(--blue-deep);rotate:-4deg;white-space:nowrap}
.sec-deco span::after{content:"";position:absolute;left:58px;right:-4px;bottom:-4px;height:9px;border-radius:9px;background:rgba(233,162,26,.28);z-index:-1}
.sec-deco svg{width:52px;height:36px;flex:none;margin-bottom:-16px;fill:none;stroke:var(--gold);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.js .sec-deco{opacity:0;transform:translateY(18px);transition:opacity 1s .2s var(--ease-out),transform 1.2s .2s var(--ease-out)}
.js .section.seen .sec-deco{opacity:1;transform:none}

/* section surfaces */
.section::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none}
.fonts::before{background:
  repeating-linear-gradient(to bottom,transparent 0 39px,rgba(181,71,61,.07) 39px 40px),
  linear-gradient(180deg,transparent,rgba(237,231,218,.75) 22%,rgba(237,231,218,.75) 80%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.workspace::before{background:radial-gradient(circle at 1px 1px,rgba(20,33,61,.13) 1px,transparent 0) 0 0/22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 30% 40%,#000,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 30% 40%,#000,transparent 75%)}
.details::before{background:
  linear-gradient(rgba(31,107,214,.07) 1px,transparent 1px) 0 0/36px 36px,
  linear-gradient(90deg,rgba(31,107,214,.07) 1px,transparent 1px) 0 0/36px 36px;
  -webkit-mask-image:radial-gradient(ellipse 60% 55% at 70% 30%,#000,transparent 72%);mask-image:radial-gradient(ellipse 60% 55% at 70% 30%,#000,transparent 72%)}
.journey::before{background:radial-gradient(ellipse 50% 70% at 50% 60%,rgba(255,253,248,.8),transparent 70%)}

/* glassy cards so the ambient light shows through */
.cell,.scene-card,.font-card,.play-shell,.stage-frame{background:rgba(255,253,248,.82);backdrop-filter:blur(10px) saturate(1.2);-webkit-backdrop-filter:blur(10px) saturate(1.2)}
.cell.lab{background:var(--ink)}
.cell.ai{background:linear-gradient(135deg,rgba(233,241,252,.92),rgba(255,253,248,.82) 60%)}
.lab>*{position:relative}
.cell.lab::before{content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(closest-side,rgba(31,107,214,.45),transparent);pointer-events:none}
.marquee{background:rgba(255,253,248,.7);backdrop-filter:blur(8px)}

/* mode steps: shorter, so the sticky stage isn't followed by a blank column */
.mode-step{min-height:44vh;opacity:.4}
.modes-stage::before{content:"";position:absolute;inset:-10% -8%;z-index:-1;border-radius:40px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(246,213,143,.45),rgba(190,212,245,.25) 60%,transparent)}

/* journey: steps become cards */
.steps3 li{position:relative;padding:34px 26px 30px;border:1px solid var(--line-soft);border-radius:22px;background:rgba(255,253,248,.78);backdrop-filter:blur(8px);
  box-shadow:0 30px 60px -44px rgba(20,33,61,.45);transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out)}
.steps3 li:hover{transform:translateY(-6px);box-shadow:0 40px 70px -40px rgba(20,33,61,.5)}
.steps-line{top:60px}
.s-no{box-shadow:0 0 0 8px rgba(255,253,248,.9)}

/* faq now sits above the contact band */
.faq{padding-top:clamp(40px,6vw,80px)}

/* ---------- real-interface showcase ---------- */
.showcase{padding-top:clamp(64px,8vw,110px)}
.showcase::before{background:radial-gradient(ellipse 60% 50% at 50% 62%,rgba(31,107,214,.12),transparent 70%)}
.shot-stage{position:relative;max-width:1100px;margin:0 auto;padding:0 0 15%;perspective:1800px}
.shot-win{margin:0;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 0 0 1px rgba(20,33,61,.08),0 50px 100px -40px rgba(20,33,61,.5),0 20px 40px -30px rgba(20,33,61,.3)}
.shot-bar{display:flex;align-items:center;gap:7px;height:34px;padding:0 14px;background:#ece7dc}
.shot-bar i{width:10px;height:10px;border-radius:50%}
.shot-bar i:nth-child(1){background:#ff5f57}.shot-bar i:nth-child(2){background:#febc2e}.shot-bar i:nth-child(3){background:#28c840}
.shot-bar span{margin-left:12px;padding:2px 14px;border-radius:999px;background:#fff;font:12px var(--mono);color:var(--muted)}
.shot-bar.g{background:#1c4a36}.shot-bar.g span{background:rgba(255,255,255,.12);color:#cfe8d8}
.shot-win img{width:100%;height:auto}
.shot-main{width:84%;transform:rotateX(8deg) rotateY(6deg) rotateZ(-1deg);transform-origin:50% 100%;transition:transform 1.4s var(--ease-out)}
.shot-side{position:absolute;right:0;bottom:0;width:54%;transform:translate(4%,6%) rotate(2.5deg);transition:transform 1.4s .15s var(--ease-out)}
.shot-stage.in .shot-main{transform:rotateX(0) rotateY(0) rotateZ(-1deg)}
.shot-stage.in .shot-side{transform:translate(0,0) rotate(2deg)}
.shot-tag{position:absolute;z-index:2;padding:8px 18px;border-radius:999px;background:rgba(255,253,248,.95);box-shadow:0 14px 30px -14px rgba(20,33,61,.5),0 0 0 1px var(--line-soft);
  font-size:clamp(17px,1.8vw,24px);color:var(--blue-deep);white-space:nowrap;animation:bob 6s ease-in-out infinite}
.shot-tag::before{content:"";display:inline-block;width:8px;height:8px;margin-right:10px;border-radius:50%;background:var(--gold);vertical-align:middle}
.t1{right:12%;top:4%;rotate:3deg}
.t2{left:-3%;top:44%;rotate:-4deg;animation-delay:-2s}
.t3{right:-2%;bottom:40%;rotate:-2deg;animation-delay:-4s;color:var(--green)}
.t3::before{background:#3fa36f}
.shot-points{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;max-width:1100px;margin:clamp(36px,5vw,56px) auto 0;padding:0}
.shot-points li{padding:20px 22px;border-radius:18px;border:1px solid var(--line-soft);background:rgba(255,253,248,.75);backdrop-filter:blur(8px)}
.shot-points b{display:block;font-size:17px}
.shot-points b::before{content:"✓";display:inline-grid;place-items:center;width:22px;height:22px;margin-right:10px;border-radius:50%;background:var(--ink);color:var(--paper);font-size:12px;vertical-align:1px}
.shot-points span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6}

@media (max-width:1080px){
  .sec-deco b{font-size:110px}
  .shot-points{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .sec-deco{display:none}
  .mode-step{min-height:0;opacity:1}
  .t2{left:0}.t3{right:0}
}
@media (max-width:640px){
  .shot-stage{padding-bottom:22%}
  .shot-main{width:96%}
  .shot-side{width:62%}
  .shot-bar{height:24px;padding:0 10px;gap:5px}
  .shot-bar i{width:7px;height:7px}
  .shot-bar span{display:none}
  .shot-tag{font-size:15px;padding:6px 12px}
  .t1{right:2%;top:-6%}
  .t2{display:none}
  .t3{bottom:auto;top:58%}
  .shot-points{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .shot-points li{padding:14px 14px}
  .shot-points b{font-size:15px}
  .shot-points b::before{width:18px;height:18px;margin-right:6px;font-size:10px}
  .shot-points span{font-size:12px}
  .ambient i{width:110vmax;height:110vmax}
}
@media (prefers-reduced-motion:reduce){
  .ambient i,.shot-tag{animation:none}
  .js .sec-deco{opacity:1;transform:none}
}

/* ---------- free badge, live stats, video ---------- */
.free-tag{display:inline-grid;place-items:center;height:22px;padding:0 10px;margin-left:-6px;border-radius:999px;background:var(--gold);color:#fff;font-size:12px;font-weight:800;letter-spacing:.08em;
  box-shadow:0 6px 14px -6px rgba(233,162,26,.8)}
.eyebrow{font-weight:600;color:var(--ink)}
.hero-stats{gap:clamp(18px,3vw,40px);flex-wrap:wrap}
.hero-stats>div[hidden]{display:none}
.hero-stats [data-live] b{color:var(--blue-deep)}

.video-card{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:clamp(24px,4vw,48px);align-items:center;max-width:1100px;margin:clamp(48px,7vw,88px) auto 0;
  padding:clamp(22px,3vw,36px);border-radius:28px;color:var(--paper);
  background:radial-gradient(600px 300px at 0% 0%,rgba(31,107,214,.35),transparent 70%),radial-gradient(500px 300px at 100% 100%,rgba(233,162,26,.18),transparent 70%),var(--night);
  box-shadow:0 50px 90px -50px rgba(14,23,41,.7)}
.video-copy h3{margin:6px 0 14px;font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.02em}
.video-copy p{color:rgba(245,241,232,.7);font-size:15px;margin-bottom:20px}
.video-copy .kicker{color:var(--gold-soft);margin-bottom:8px}
.video-frame{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#000;box-shadow:0 0 0 1px rgba(245,241,232,.12)}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
@media (max-width:900px){
  .video-card{grid-template-columns:1fr}
}
@media (max-width:640px){
  .hero-stats{gap:14px 22px}
  .hero-stats>div{flex:1 1 40%}
  .video-card{padding:18px;border-radius:22px}
}
/* video: copy beside an iPhone-style frame. The Douyin player only lays out correctly at its own
   portrait size (~330×714), so the screen keeps that size and the whole phone is scaled to fit. */
.video-card{grid-template-columns:minmax(0,1fr) auto;gap:clamp(28px,6vw,96px);padding:clamp(28px,5vw,64px) clamp(24px,6vw,88px)}
.video-copy h3{font-size:clamp(28px,3.4vw,44px)}
.video-copy p{font-size:16px;max-width:420px}
.video-list{list-style:none;display:grid;gap:10px;margin:26px 0 30px;padding:0}
.video-list li{display:flex;align-items:center;gap:12px;font-size:14px;color:rgba(245,241,232,.82)}
.video-list b{font:12px var(--mono);color:var(--gold-soft);min-width:44px}
.phone-wrap{--s:1;width:calc(354px * var(--s));height:calc(796px * var(--s));justify-self:center}
.phone{position:relative;width:354px;height:796px;padding:12px;border-radius:60px;transform:scale(var(--s));transform-origin:0 0;
  background:linear-gradient(145deg,#2c2c2f,#0d0d0f 40%,#1b1b1e);
  box-shadow:0 0 0 2px #6e6e73,0 0 0 4px #2a2a2d,inset 0 0 0 2px #3c3c40,0 60px 90px -30px rgba(0,0,0,.75),0 30px 50px -30px rgba(31,107,214,.35)}
.phone-btn{position:absolute;width:4px;border-radius:2px;background:linear-gradient(90deg,#55555a,#2a2a2d)}
.b-action{left:-6px;top:118px;height:30px}.b-up{left:-6px;top:172px;height:58px}.b-down{left:-6px;top:242px;height:58px}
.b-power{right:-6px;left:auto;top:200px;height:92px;background:linear-gradient(270deg,#55555a,#2a2a2d)}
.phone-screen{position:relative;width:330px;height:772px;border-radius:48px;overflow:hidden;background:#000;isolation:isolate}
.phone-status{position:relative;z-index:3;display:flex;align-items:center;justify-content:space-between;height:40px;padding:0 28px 0 34px;color:#fff;font:600 15px/1 -apple-system,"SF Pro Text",var(--sans)}
.ps-island{position:absolute;left:50%;top:10px;width:104px;height:30px;margin-left:-52px;border-radius:20px;background:#000;box-shadow:inset 0 0 0 1px #111}
.ps-island::after{content:"";position:absolute;right:20px;top:10px;width:10px;height:10px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#2b3a5c,#05070c 70%)}
.ps-icons{display:flex;align-items:center;gap:6px}
.ps-signal{width:17px;height:11px;background:linear-gradient(to top,#fff 30%,transparent 30%) 0 100%/3px 100% no-repeat,linear-gradient(to top,#fff 55%,transparent 55%) 4.5px 100%/3px 100% no-repeat,linear-gradient(to top,#fff 78%,transparent 78%) 9px 100%/3px 100% no-repeat,linear-gradient(#fff,#fff) 13.5px 100%/3px 100% no-repeat}
.ps-wifi{width:15px;height:11px;background:#fff;clip-path:polygon(50% 100%,0 30%,10% 18%,30% 6%,50% 2%,70% 6%,90% 18%,100% 30%)}
.ps-batt{position:relative;width:25px;height:12px;border-radius:4px;box-shadow:inset 0 0 0 1.2px rgba(255,255,255,.45)}
.ps-batt::before{content:"";position:absolute;left:2px;top:2px;bottom:2px;width:16px;border-radius:2px;background:#fff}
.ps-batt::after{content:"";position:absolute;right:-3px;top:4px;width:2px;height:4px;border-radius:0 1px 1px 0;background:rgba(255,255,255,.45)}
.phone-screen .video-frame{position:absolute;left:0;right:0;top:40px;bottom:18px;aspect-ratio:auto;border-radius:0;box-shadow:none;background:#000}
.phone-screen .video-poster img{object-fit:contain}
.phone-home{position:absolute;z-index:3;left:50%;bottom:7px;width:120px;height:5px;margin-left:-60px;border-radius:3px;background:rgba(20,20,22,.85);pointer-events:none}
.video-play{position:absolute;left:50%;top:50%;width:72px;height:72px;margin:-36px 0 0 -36px;border-radius:50%;background:rgba(14,23,41,.6);backdrop-filter:blur(6px);box-shadow:0 0 0 8px rgba(245,241,232,.16)}
.video-play::after{content:"";position:absolute;left:29px;top:22px;border-style:solid;border-width:14px 0 14px 22px;border-color:transparent transparent transparent #fff}
.video-poster{position:absolute;inset:0;display:block}
.video-poster img{width:100%;height:100%;transition:transform .8s var(--ease-out)}
.video-poster:hover img{transform:scale(1.03)}
@media (max-width:900px){
  .video-card{grid-template-columns:1fr;text-align:left}
}
.video-frame.playing .video-poster{visibility:hidden}
.phone-screen .video-frame iframe{background:#000}
.phone-home{background:rgba(255,255,255,.75)}

/* ---------- about: one factual definition ---------- */
.about{padding-bottom:clamp(24px,4vw,48px)}
.about-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,72px);align-items:center}
.about h2{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;letter-spacing:-.02em}
.about-def{margin-top:20px;padding:20px 24px;border-left:4px solid var(--gold);border-radius:0 16px 16px 0;background:rgba(255,253,248,.85);font-size:16px;line-height:1.9;color:var(--ink-2)}
.about-def strong{color:var(--blue-deep)}
.about-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.about-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;border-radius:20px;overflow:hidden;background:var(--line-soft);border:1px solid var(--line-soft);box-shadow:0 40px 70px -50px rgba(20,33,61,.45)}
.about-facts div{padding:18px 20px;background:rgba(255,253,248,.92)}
.about-facts dt{font-size:12px;color:var(--muted)}
.about-facts dd{margin:4px 0 0;font-size:15px;font-weight:600;color:var(--ink)}
@media (max-width:900px){.about-grid{grid-template-columns:1fr}}
@media (max-width:420px){.about-facts{grid-template-columns:1fr}}

/* ---------- why: advantages vs. typical tools ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.why-card{position:relative;padding:26px 26px 24px;border-radius:22px;border:1px solid var(--line-soft);background:rgba(255,253,248,.82);backdrop-filter:blur(10px);
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out)}
.why-card:hover{transform:translateY(-4px);box-shadow:0 30px 60px -40px rgba(20,33,61,.5)}
.why-tag{display:inline-block;padding:4px 12px;border-radius:999px;background:rgba(31,107,214,.1);color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.04em}
.why-card h3{margin:14px 0 8px;font-size:19px;font-weight:700;letter-spacing:-.01em}
.why-card p{font-size:14px;color:var(--ink-2);line-height:1.8}
.why-photo{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(22px,4vw,48px);align-items:center;padding:clamp(24px,3.4vw,40px);
  background:linear-gradient(135deg,rgba(255,253,248,.92),rgba(233,241,252,.9));border-color:#d6e3f5}
.why-photo .why-tag{background:var(--gold);color:#fff}
.why-photo h3{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
.why-photo p{font-size:15px}
.link-more{display:inline-block;margin-top:16px;font-size:14px;font-weight:700;color:var(--blue-deep);text-decoration:none}
.link-more:hover{text-decoration:underline}
.why-shot{margin:0;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 0 0 1px rgba(20,33,61,.08),0 40px 70px -40px rgba(20,33,61,.55);rotate:1deg}
.why-shot img{width:100%}
.why-shot figcaption{padding:9px 14px;font-size:12px;color:var(--muted);background:var(--card);border-top:1px solid var(--line-soft)}
.why-more{margin-top:28px;text-align:center}
@media (max-width:1080px){.why-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){.why-photo{grid-template-columns:1fr}.why-shot{rotate:0deg}}
@media (max-width:640px){.why-grid{grid-template-columns:1fr}}

/* nav: keep one line; collapse into the menu before it gets crowded */
.nav-links a,.brand-word{white-space:nowrap}
@media (max-width:1320px){.nav-links{display:none}.nav-cta{margin-left:auto}.menu-toggle{display:block}}