@font-face{font-family:"Geist";src:url("./fonts/Geist-Variable.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("./fonts/GeistMono-Variable.woff2") format("woff2");font-weight:100 900;font-display:swap}

:root{
  --font-body:"Geist","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"Geist Mono","SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --r-sm:10px;--r-md:14px;--r-lg:22px;
  --text-xs:clamp(.75rem,.72rem + .1vw,.8rem);
  --text-sm:clamp(.84rem,.8rem + .15vw,.9rem);
  --text-base:clamp(.95rem,.92rem + .15vw,1rem);
  --text-lg:clamp(1.12rem,1.05rem + .3vw,1.3rem);
  --text-hero:clamp(2.3rem,1.2rem + 3.6vw,4.4rem);
}
[data-theme=dark]{
  color-scheme:dark;
  --bg:#03050a;
  --text:#e9eef6;
  --muted:#8e9aad;
  --faint:#5d6779;
  --line:rgba(170,200,255,.11);
  --line-strong:rgba(170,200,255,.2);
  --glass:rgba(10,14,24,.42);
  --glass-strong:rgba(12,17,28,.7);
  --field:rgba(255,255,255,.035);
  --accent:#7fe6c8;
  --accent-2:#76a9ff;
  --accent-ink:#04110d;
  --error:#ff8f96;
  --warn:#ffcf7a;
  --shadow:0 30px 80px -30px rgba(0,0,0,.8);
}
[data-theme=light]{
  color-scheme:light;
  --bg:#eef2f7;
  --text:#0d1a2b;
  --muted:#55627a;
  --faint:#8a95a8;
  --line:rgba(20,40,80,.1);
  --line-strong:rgba(20,40,80,.18);
  --glass:rgba(255,255,255,.62);
  --glass-strong:rgba(255,255,255,.84);
  --field:rgba(255,255,255,.6);
  --accent:#0e8a6c;
  --accent-2:#3460d8;
  --accent-ink:#fff;
  --error:#c2333d;
  --warn:#a86a00;
  --shadow:0 30px 70px -35px rgba(20,40,80,.35);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-size-adjust:100%;scroll-behavior:smooth}
body{font:400 var(--text-base)/1.65 var(--font-body);color:var(--text);background:var(--bg);min-height:100dvh;overflow-x:hidden;transition:background .5s var(--ease-out),color .3s}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
a{color:inherit;text-decoration:none}
img,svg{display:block}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--font-mono);font-feature-settings:"zero" 1;letter-spacing:.01em}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--accent);color:var(--accent-ink);padding:8px 14px;border-radius:8px}
.skip:focus{left:12px}

/* ---------- Cosmos ---------- */
.cosmos{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
#globe-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity 1.6s var(--ease-out)}
#globe-canvas.ready{opacity:1}
.cosmos-fallback{position:absolute;left:50%;bottom:-62vmin;width:130vmin;height:130vmin;transform:translateX(-50%);border-radius:50%;
  background:radial-gradient(circle at 50% 20%,rgba(118,169,255,.22),transparent 55%),radial-gradient(circle at 50% 50%,#0a1222 60%,transparent 61%);
  box-shadow:0 -10px 120px 10px rgba(118,169,255,.18),inset 0 30px 80px rgba(127,230,200,.15);opacity:0;transition:opacity 1s}
html.no-webgl .cosmos-fallback{opacity:1}
.cosmos-vignette{position:absolute;inset:0;background:
  radial-gradient(120% 70% at 50% 0%,transparent 40%,color-mix(in srgb,var(--bg) 55%,transparent) 100%),
  linear-gradient(180deg,color-mix(in srgb,var(--bg) 35%,transparent) 0%,transparent 30%)}
[data-theme=light] .cosmos-vignette{background:radial-gradient(120% 80% at 50% 0%,transparent 30%,rgba(238,242,247,.55) 100%)}

/* ---------- Header ---------- */
.header{position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:20px clamp(18px,4vw,48px)}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{color:var(--text)}
.brand-text{display:flex;flex-direction:column;line-height:1.1;font-weight:650;letter-spacing:.06em;font-size:.95rem}
.brand-sub{font-weight:450;letter-spacing:.02em;color:var(--muted);font-size:.72rem;margin-top:2px}
.header-right{display:flex;align-items:center;gap:12px}
.secure{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-xs);color:var(--muted);padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.secure svg{color:var(--accent)}
.theme{width:36px;height:36px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--muted);transition:color .2s,border-color .2s,transform .4s var(--ease-spring)}
.theme:hover{color:var(--text);border-color:var(--line-strong)}
.theme:active{transform:rotate(25deg) scale(.92)}
[data-theme=dark] .i-sun,[data-theme=light] .i-moon{display:none}

/* ---------- Layout ---------- */
.layout{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:clamp(32px,6vw,96px);align-items:start;
  max-width:1280px;margin:0 auto;padding:clamp(16px,4vh,48px) clamp(18px,4vw,48px) 64px}

/* ---------- Intro ---------- */
.intro{padding-top:clamp(8px,3vh,40px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font:500 .72rem/1 var(--font-mono);letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35;transform:scale(.8)}}
.hero-title{margin:22px 0 18px;font-size:var(--text-hero);line-height:1.08;font-weight:650;letter-spacing:-.02em}
.hero-grad{background:linear-gradient(100deg,var(--text) 10%,var(--accent) 55%,var(--accent-2) 95%);-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% 100%;animation:sheen 9s ease-in-out infinite}
@keyframes sheen{50%{background-position:100% 0}}
.lead{max-width:30em;color:var(--muted);font-size:var(--text-lg);line-height:1.7}

.stats{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;margin-top:36px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(10px) saturate(1.2);-webkit-backdrop-filter:blur(10px) saturate(1.2);overflow:hidden}
.stat{padding:18px 18px 16px;display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line);min-width:0}
.stat:first-child{border-left:0}
.stat-label{font-size:var(--text-xs);color:var(--muted);white-space:nowrap}
.stat-num{font-size:clamp(1.4rem,1rem + 1vw,1.9rem);font-weight:600;line-height:1.15;letter-spacing:-.01em;display:flex;align-items:baseline;gap:4px;font-variant-numeric:tabular-nums}
.stat-num small{font-size:.8rem;color:var(--muted);font-weight:450}
.stat-plan .stat-num{color:var(--accent)}
.stat-sub{font-size:.72rem;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.metrics-note{margin-top:10px;font-size:.72rem;color:var(--faint)}

.guide{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:28px}
.guide li{position:relative;padding:14px 14px 14px;border-radius:var(--r-md);border:1px solid var(--line);background:color-mix(in srgb,var(--glass) 60%,transparent);display:flex;flex-direction:column;gap:8px;transition:border-color .5s,background .5s}
.guide li>span{font-size:.72rem;color:var(--faint);transition:color .5s}
.guide strong{font-size:var(--text-sm);font-weight:600}
.guide p{font-size:.78rem;color:var(--muted);line-height:1.5;margin-top:2px}
.guide li.on{border-color:color-mix(in srgb,var(--accent) 45%,transparent);background:color-mix(in srgb,var(--accent) 7%,var(--glass))}
.guide li.on>span{color:var(--accent)}
.guide li.done>span::after{content:" ✓";color:var(--accent)}

.faq{margin-top:22px;display:grid;gap:2px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:14px 2px;font-size:var(--text-sm);cursor:pointer;color:var(--text)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{width:10px;height:10px;position:relative;flex:none}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;inset:4px 0 auto;height:1.5px;background:var(--muted);transition:transform .35s var(--ease-out)}
.faq summary i::after{transform:rotate(90deg)}
.faq details[open] summary i::after{transform:rotate(0)}
.faq details p{font-size:var(--text-sm);color:var(--muted);padding:0 2px 16px;animation:fadeDown .4s var(--ease-out)}
@keyframes fadeDown{from{opacity:0;transform:translateY(-6px)}}

/* ---------- Redeem card (3D) ---------- */
.flow{position:relative;display:flex;flex-direction:column;gap:22px}
.card-stage{position:relative;perspective:1200px;padding:0 14px;height:clamp(200px,24vw,258px)}
.rcard{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .9s var(--ease-out);
  --rx:0deg;--ry:0deg;--mx:50%;--my:30%;transform:rotateX(var(--rx)) rotateY(var(--ry));will-change:transform}
.rcard.flipped{transform:rotateX(var(--rx)) rotateY(calc(180deg + var(--ry)))}
.rcard.tilting{transition:transform .18s linear}
.rcard-face{position:absolute;inset:0;border-radius:20px;padding:20px 22px;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;display:flex;flex-direction:column;
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(127,230,200,.22),transparent 45%),
    radial-gradient(120% 140% at 100% 100%,rgba(118,169,255,.26),transparent 50%),
    linear-gradient(135deg,#0d1626,#0a0f1b 60%,#0c1424);
  border:1px solid rgba(190,220,255,.18);color:#eaf1fb;
  box-shadow:0 1px 0 rgba(255,255,255,.12) inset,0 40px 80px -30px rgba(0,0,0,.85),0 0 0 1px rgba(0,0,0,.4)}
[data-theme=light] .rcard-face{box-shadow:0 1px 0 rgba(255,255,255,.12) inset,0 40px 70px -30px rgba(20,40,80,.5)}
.rcard-back{transform:rotateY(180deg);background:
    radial-gradient(120% 140% at 100% 0%,rgba(127,230,200,.32),transparent 50%),
    radial-gradient(120% 140% at 0% 100%,rgba(118,169,255,.22),transparent 50%),
    linear-gradient(135deg,#0b1a1a,#0a1018 60%,#0c1726)}
.rcard-sheen{position:absolute;inset:0;pointer-events:none;mix-blend-mode:screen;opacity:.75;
  background:radial-gradient(circle at var(--mx) var(--my),rgba(255,255,255,.2),transparent 40%),
    conic-gradient(from 200deg at var(--mx) var(--my),transparent,rgba(127,230,200,.08),rgba(118,169,255,.1),rgba(255,140,220,.06),transparent 60%)}
.rcard-grid{position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:22px 22px;
  mask-image:radial-gradient(circle at 80% 20%,#000,transparent 70%);-webkit-mask-image:radial-gradient(circle at 80% 20%,#000,transparent 70%)}
.rcard-top{position:relative;display:flex;justify-content:space-between;align-items:center}
.rcard-brand{display:flex;align-items:center;gap:8px;font-weight:650;letter-spacing:.12em;font-size:.82rem}
.rcard-status{font:500 .66rem/1 var(--font-mono);letter-spacing:.12em;padding:6px 9px;border-radius:999px;border:1px solid rgba(255,255,255,.16);color:#aab6c8;transition:all .4s}
.rcard-status.ok{color:#7fe6c8;border-color:rgba(127,230,200,.45);background:rgba(127,230,200,.08)}
.rcard-status.warn{color:#ffcf7a;border-color:rgba(255,207,122,.45)}
.rcard-status.err{color:#ff8f96;border-color:rgba(255,143,150,.5)}
.rcard-plan{position:relative;margin-top:auto;display:flex;flex-direction:column;gap:2px}
.rcard-plan-name{font-size:1.25rem;font-weight:650;letter-spacing:-.01em}
.rcard-plan-term{font-size:.68rem;letter-spacing:.18em;color:#91a0b6}
.rcard-code{position:relative;margin:14px 0 14px;font-size:clamp(.9rem,.7rem + .6vw,1.08rem);letter-spacing:.14em;min-height:1.6em;white-space:nowrap;overflow:hidden;text-overflow:clip;color:#f3f8ff;text-shadow:0 0 18px rgba(127,230,200,.35)}
.rcard-code .ph{color:rgba(255,255,255,.22)}
.rcard-code .ch{display:inline-block;animation:engrave .5s var(--ease-out) both}
.rcard-code .gap{display:inline-block;width:.5em}
@keyframes engrave{from{opacity:0;transform:translateY(-.5em) rotateX(80deg);filter:blur(4px);color:#7fe6c8}to{opacity:1;transform:none;filter:none}}
.rcard-bottom{position:relative;display:flex;justify-content:space-between;align-items:flex-end;gap:12px}
.rcard-bottom>div:first-child{display:flex;flex-direction:column;min-width:0}
.rcard-k{font-size:.64rem;color:#7d8aa0;letter-spacing:.08em}
.rcard-v{font-size:.8rem;color:#d3ddeb;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}
.rcard-chip{width:42px;height:32px;border-radius:7px;background:linear-gradient(135deg,#d9e6f5,#8fa4bf 50%,#e8f0fa);display:grid;grid-template-rows:repeat(3,1fr);padding:5px;gap:3px;opacity:.9;box-shadow:inset 0 0 0 1px rgba(0,0,0,.2)}
.rcard-chip i{border-radius:2px;background:rgba(0,0,0,.18)}
.rcard-scan{position:absolute;left:0;right:0;top:-30%;height:30%;background:linear-gradient(180deg,transparent,rgba(127,230,200,.22),transparent);opacity:0;pointer-events:none}
.rcard[data-state=processing] .rcard-scan{opacity:1;animation:scan 1.6s linear infinite}
@keyframes scan{to{top:100%}}
.rcard[data-state=error]{animation:shake .5s var(--ease-out)}
.rcard[data-state=error] .rcard-front{border-color:rgba(255,143,150,.55)}
@keyframes shake{20%{translate:-10px 0}40%{translate:8px 0}60%{translate:-5px 0}80%{translate:3px 0}}
.rcard[data-state=valid] .rcard-front,.rcard[data-state=email] .rcard-front,.rcard[data-state=otp] .rcard-front,.rcard[data-state=confirm] .rcard-front{border-color:rgba(127,230,200,.4)}
.rcard-check{position:relative;display:flex;gap:14px;align-items:center;margin-top:18px;color:#7fe6c8}
.rcard-check>div{display:flex;flex-direction:column;color:#eaf1fb}
.rcard.flipped .ck{stroke-dasharray:40;stroke-dashoffset:40;animation:draw .7s .55s var(--ease-out) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.rcard-rows{position:relative;margin-top:auto;display:grid;gap:6px}
.rcard-rows div{display:flex;justify-content:space-between;gap:12px;font-size:.78rem;border-top:1px dashed rgba(255,255,255,.12);padding-top:6px}
.rcard-rows dt{color:#7d8aa0}
.rcard-rows dd{color:#e3ebf6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-shadow{position:absolute;left:14%;right:14%;bottom:-18px;height:30px;border-radius:50%;background:radial-gradient(closest-side,rgba(118,169,255,.35),transparent);filter:blur(10px);opacity:.6}
[data-theme=light] .card-shadow{background:radial-gradient(closest-side,rgba(20,40,80,.35),transparent)}

/* ---------- Flow box ---------- */
.flow-box{position:relative;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass-strong);backdrop-filter:blur(24px) saturate(1.3);-webkit-backdrop-filter:blur(24px) saturate(1.3);box-shadow:var(--shadow);padding:8px 22px 18px;overflow:hidden}
.flow-box::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(140deg,color-mix(in srgb,var(--accent) 45%,transparent),transparent 30%,transparent 70%,color-mix(in srgb,var(--accent-2) 40%,transparent));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;opacity:.6}
.nav-tabs{position:relative;display:grid;grid-template-columns:1fr 1fr;margin:6px -12px 14px;padding:4px;border-radius:12px;background:var(--field);border:1px solid var(--line)}
.nav-tabs button{position:relative;z-index:1;padding:9px 0;font-size:var(--text-sm);color:var(--muted);border-radius:9px;transition:color .3s}
.nav-tabs button.selected{color:var(--text);font-weight:550}
.tab-ink{position:absolute;z-index:0;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:9px;background:color-mix(in srgb,var(--text) 9%,transparent);border:1px solid var(--line-strong);transition:transform .5s var(--ease-out)}
.nav-tabs.q .tab-ink{transform:translateX(100%)}

.flow-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.step-label{font-size:.72rem;color:var(--muted)}
.progress{position:relative;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:22px;padding-bottom:12px}
.progress li{display:flex;align-items:center;gap:7px;font-size:.78rem;color:var(--faint);transition:color .4s}
.progress li i{width:7px;height:7px;border-radius:50%;border:1.5px solid currentColor;transition:all .4s var(--ease-spring)}
.progress li.active{color:var(--text)}
.progress li.active i{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent);transform:scale(1.15)}
.progress li.done{color:var(--muted)}
.progress li.done i{background:var(--accent);border-color:var(--accent)}
.progress-bar{position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--line)}
.progress-bar span{position:absolute;inset:0 auto 0 0;width:12.5%;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 12px color-mix(in srgb,var(--accent) 60%,transparent);transition:width .8s var(--ease-out)}
.flow-box.query-mode .flow-header,.flow-box.query-mode .progress{display:none}

.message{margin:-6px 0 16px;padding:10px 12px;border-radius:var(--r-sm);font-size:var(--text-sm);border:1px solid color-mix(in srgb,var(--error) 40%,transparent);background:color-mix(in srgb,var(--error) 9%,transparent);color:var(--error);animation:fadeDown .35s var(--ease-out)}
.message.info{border-color:color-mix(in srgb,var(--accent) 35%,transparent);background:color-mix(in srgb,var(--accent) 8%,transparent);color:var(--accent)}

.panels{position:relative}
.panel{display:flex;flex-direction:column;gap:14px}
.panel h2{font-size:var(--text-lg);font-weight:620;letter-spacing:-.01em}
.panel .muted{color:var(--muted);font-size:var(--text-sm);margin-top:-8px}
.footnote{font-size:.76rem;color:var(--faint);line-height:1.55}
.account{font-size:var(--text-sm);padding:8px 12px;border-radius:var(--r-sm);background:var(--field);border:1px solid var(--line);color:var(--text);word-break:break-all}

/* fields with floating labels */
.field{position:relative}
.field input{width:100%;height:56px;padding:22px 64px 6px 16px;border-radius:var(--r-md);border:1px solid var(--line-strong);background:var(--field);outline:none;font-size:1rem;transition:border-color .3s,background .3s,box-shadow .3s}
.field input.mono{letter-spacing:.08em}
.field label{position:absolute;left:17px;top:17px;font-size:var(--text-sm);color:var(--muted);pointer-events:none;transform-origin:left top;transition:transform .35s var(--ease-out),color .3s}
.field input:focus+label,.field input:not(:placeholder-shown)+label{transform:translateY(-10px) scale(.78);color:var(--faint)}
.field input:focus+label{color:var(--accent)}
.field input:focus{border-color:color-mix(in srgb,var(--accent) 70%,transparent);background:color-mix(in srgb,var(--accent) 4%,var(--field));box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 12%,transparent)}
.field-glow{position:absolute;left:14px;right:14px;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:0;transform:scaleX(.2);transition:all .5s var(--ease-out);pointer-events:none}
.field input:focus~.field-glow{opacity:1;transform:scaleX(1)}
.field.invalid input{border-color:color-mix(in srgb,var(--error) 70%,transparent);box-shadow:0 0 0 4px color-mix(in srgb,var(--error) 12%,transparent)}
.field.invalid{animation:shake .45s var(--ease-out)}
.field-action{position:absolute;right:10px;top:12px;height:32px;padding:0 12px;border-radius:8px;font-size:.78rem;color:var(--muted);border:1px solid var(--line);background:var(--field);transition:all .2s}
.field-action:hover{color:var(--text);border-color:var(--line-strong)}
.match{position:absolute;right:14px;top:18px;color:var(--accent);opacity:0;transform:scale(.4) rotate(-30deg);transition:all .45s var(--ease-spring)}
#confirm-field.ok .match{opacity:1;transform:none}
#confirm-field.ok input{border-color:color-mix(in srgb,var(--accent) 55%,transparent)}
#confirm-field.bad input{border-color:color-mix(in srgb,var(--error) 60%,transparent)}
.match-bar{position:absolute;left:16px;right:16px;bottom:6px;height:2px;border-radius:2px;overflow:hidden;opacity:0;transition:opacity .3s}
#confirm-field.typing .match-bar{opacity:1}
.match-bar span{display:block;height:100%;width:0;background:var(--accent);transition:width .3s var(--ease-out),background .3s}
#confirm-field.bad .match-bar span{background:var(--error)}

.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:.78rem;color:var(--muted);line-height:1.6;cursor:pointer}
.checkbox input{position:absolute;opacity:0;width:1px;height:1px}
.checkbox .box{flex:none;width:18px;height:18px;margin-top:2px;border-radius:6px;border:1.5px solid var(--line-strong);background:var(--field);position:relative;transition:all .3s var(--ease-spring)}
.checkbox .box::after{content:"";position:absolute;left:5px;top:1.5px;width:5px;height:10px;border:solid var(--accent-ink);border-width:0 2px 2px 0;transform:rotate(45deg) scale(0);transition:transform .35s var(--ease-spring)}
.checkbox input:checked+.box{background:var(--accent);border-color:var(--accent)}
.checkbox input:checked+.box::after{transform:rotate(45deg) scale(1)}
.checkbox input:focus-visible+.box{outline:2px solid var(--accent);outline-offset:2px}
.checkbox.invalid .box{border-color:var(--error);animation:shake .45s}

/* buttons */
.primary{position:relative;height:52px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:var(--text-base);color:var(--accent-ink);
  background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 100%,#fff 12%),var(--accent));box-shadow:0 10px 30px -10px color-mix(in srgb,var(--accent) 70%,transparent),inset 0 1px 0 rgba(255,255,255,.35);overflow:hidden;transition:transform .25s var(--ease-out),box-shadow .3s,filter .3s}
.primary::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-120%);transition:transform .9s var(--ease-out)}
.primary:hover{box-shadow:0 14px 40px -10px color-mix(in srgb,var(--accent) 85%,transparent),inset 0 1px 0 rgba(255,255,255,.35)}
.primary:hover::after{transform:translateX(120%)}
.primary:active{transform:scale(.98)}
.primary:disabled{filter:saturate(.4) brightness(.8);cursor:progress}
.btn-arrow{transition:transform .35s var(--ease-out)}
.primary:hover .btn-arrow{transform:translateX(4px)}
.primary.launch:hover .btn-arrow{transform:translate(3px,-3px)}
.primary.loading{color:transparent}
.primary.loading::before{content:"";position:absolute;width:20px;height:20px;border-radius:50%;border:2px solid color-mix(in srgb,var(--accent-ink) 30%,transparent);border-top-color:var(--accent-ink);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.5);transform:scale(0);animation:ripple .7s var(--ease-out) forwards;pointer-events:none}
@keyframes ripple{to{transform:scale(4);opacity:0}}
.secondary{height:46px;border-radius:var(--r-md);border:1px solid var(--line-strong);background:var(--field);font-size:var(--text-sm);color:var(--text);transition:border-color .2s,background .2s}
.secondary:hover{border-color:color-mix(in srgb,var(--accent) 50%,transparent)}
.actions{display:flex;justify-content:space-between;margin-top:-4px}
.text-button{font-size:var(--text-sm);color:var(--muted);padding:4px 2px;transition:color .2s}
.text-button:hover{color:var(--text)}
.text-button:disabled{opacity:.5;cursor:not-allowed}
.text-button.danger:hover{color:var(--error)}

/* OTP */
.otp-wrap{position:relative;display:flex;align-items:center;gap:12px}
#otp{position:absolute;inset:0;right:56px;opacity:0;z-index:2;font-size:16px;letter-spacing:2em;cursor:text}
.otp-cells{flex:1;display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.otp-cells span{height:56px;border-radius:12px;border:1px solid var(--line-strong);background:var(--field);display:grid;place-items:center;font:600 1.4rem/1 var(--font-mono);transition:border-color .25s,box-shadow .25s,transform .3s var(--ease-spring)}
.otp-cells span.filled{border-color:color-mix(in srgb,var(--accent) 50%,transparent);animation:pop .35s var(--ease-spring)}
.otp-cells span.cur{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 14%,transparent)}
.otp-cells span.cur::after{content:"";width:2px;height:22px;background:var(--accent);animation:blink 1s steps(2) infinite}
.otp-wrap.invalid .otp-cells span{border-color:color-mix(in srgb,var(--error) 60%,transparent)}
.otp-wrap.invalid .otp-cells{animation:shake .45s}
.otp-wrap.ok .otp-cells span{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--field))}
@keyframes pop{from{transform:scale(.8)}}
@keyframes blink{50%{opacity:0}}
.otp-timer{position:relative;flex:none;width:44px;height:44px;display:grid;place-items:center}
.otp-timer svg{position:absolute;inset:0;transform:rotate(-90deg)}
.otp-timer .t-bg{fill:none;stroke:var(--line-strong);stroke-width:2.5}
.otp-timer .t-fg{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round;stroke-dasharray:119.4;stroke-dashoffset:0;transition:stroke-dashoffset 1s linear,stroke .3s}
.otp-timer span{font-size:.72rem;color:var(--muted)}
.otp-timer.low .t-fg{stroke:var(--warn)}

/* summary */
.summary{display:grid;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.summary>div{display:flex;justify-content:space-between;gap:14px;padding:12px 14px;border-top:1px solid var(--line);font-size:var(--text-sm);animation:rowIn .5s var(--ease-out) both}
.summary>div:first-child{border-top:0}
.summary>div:nth-child(2){animation-delay:.06s}.summary>div:nth-child(3){animation-delay:.12s}
.summary dt{color:var(--muted);flex:none}
.summary dd{text-align:right;word-break:break-all}
@keyframes rowIn{from{opacity:0;transform:translateY(8px)}}

/* processing */
.proc-orbit{position:relative;width:56px;height:56px;margin-bottom:4px}
.proc-orbit span{position:absolute;inset:0;border-radius:50%;border:1.5px solid transparent;border-top-color:var(--accent);animation:spin 1.4s linear infinite}
.proc-orbit span:nth-child(2){inset:8px;border-top-color:var(--accent-2);animation-duration:2s;animation-direction:reverse}
.proc-orbit span:nth-child(3){inset:20px;border:0;background:var(--accent);box-shadow:0 0 18px var(--accent);animation:pulse 1.4s ease-in-out infinite}
.proc-steps{list-style:none;display:grid;gap:8px;counter-reset:p}
.proc-steps li{counter-increment:p;display:flex;align-items:center;gap:10px;font-size:var(--text-sm);color:var(--faint);transition:color .4s}
.proc-steps li::before{content:counter(p);width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font:500 .66rem/1 var(--font-mono);border:1px solid var(--line-strong);transition:all .4s var(--ease-spring)}
.proc-steps li.run{color:var(--text)}
.proc-steps li.run::before{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 14%,transparent);animation:pulse 1.2s infinite}
.proc-steps li.ok{color:var(--muted)}
.proc-steps li.ok::before{content:"✓";background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}

/* success */
.success-label{display:inline-flex;align-items:center;gap:8px;font:500 .74rem/1 var(--font-mono);letter-spacing:.08em;color:var(--accent)}
.success-label i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 20%,transparent)}
.cashback{padding:14px;border-radius:var(--r-md);border:1px dashed color-mix(in srgb,var(--accent) 40%,transparent);background:color-mix(in srgb,var(--accent) 5%,transparent)}
.cashback h3{font-size:var(--text-sm);font-weight:600;margin-bottom:4px}

/* query results */
#query-form{display:flex;flex-direction:column;gap:12px}
.q-item{border:1px solid var(--line);border-radius:var(--r-md);padding:14px;display:grid;gap:8px;animation:rowIn .5s var(--ease-out) both}
.q-head{display:flex;justify-content:space-between;align-items:center}
.q-badge{font-size:.72rem;padding:4px 9px;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}
.q-row{display:flex;justify-content:space-between;font-size:var(--text-sm)}
.q-row span:first-child{color:var(--muted)}

.flow-footer{display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:.74rem;color:var(--faint)}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);animation:pulse 2s infinite}

/* ---------- Support ---------- */
.support{position:relative;z-index:2;padding:0 clamp(18px,4vw,48px) 40px}
.support-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:14px}
.support-card{display:flex;gap:16px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.support-card:not(:has(.qr)){flex-direction:column;gap:6px}
.support-card h3{font-size:var(--text-sm);font-weight:600;margin-bottom:4px}
.support-card p{font-size:.8rem;color:var(--muted);line-height:1.6}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tags span{font-size:.7rem;padding:3px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.qr{flex:none;width:96px;height:96px;border-radius:12px;display:grid;place-items:end center;padding-bottom:6px;font-size:.64rem;color:#334;
  background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 21 21' shape-rendering='crispEdges'%3E%3Cpath fill='%2310151f' d='M1 1h5v5H1zM2 2v3h3V2zM15 1h5v5h-5zM16 2v3h3V2zM1 15h5v5H1zM2 16v3h3v-3zM8 1h1v2H8zM10 2h2v1h-2zM8 4h3v1H8zM12 5h1v3h-1zM9 7h2v2H9zM1 8h2v1H1zM4 8h3v1H4zM14 8h2v2h-2zM17 8h3v1h-3zM2 10h3v1H2zM6 10h2v2H6zM10 10h3v1h-3zM18 10h2v2h-2zM8 12h2v2H8zM12 12h4v1h-4zM15 14h2v2h-2zM8 15h1v4H8zM10 16h3v1h-3zM18 15h2v1h-2zM14 17h1v3h-1zM16 18h4v1h-4zM10 19h3v1h-3z'/%3E%3C/svg%3E") center 8px/70% no-repeat}
.qr.sm{width:72px;height:72px;font-size:.58rem}

.footer{position:relative;z-index:2;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:20px clamp(18px,4vw,48px) 90px;border-top:1px solid var(--line);font-size:.74rem;color:var(--faint);max-width:1376px;margin:0 auto}

/* ---------- Demo bar ---------- */
.demo-bar{position:fixed;z-index:50;left:50%;bottom:16px;transform:translateX(-50%);display:flex;align-items:center;gap:12px;padding:8px 8px 8px 12px;border-radius:14px;
  background:rgba(10,14,24,.88);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);color:#cfd8e6;font-size:.74rem;box-shadow:0 20px 50px -20px rgba(0,0,0,.8);max-width:calc(100vw - 24px)}
.demo-tag{font:600 .66rem/1 var(--font-mono);letter-spacing:.1em;color:#04110d;background:#ffcf7a;padding:5px 7px;border-radius:6px;flex:none}
.demo-tip{color:#8e9aad;white-space:nowrap}
.demo-jump{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.demo-jump button{padding:6px 9px;border-radius:8px;color:#cfd8e6;white-space:nowrap;transition:background .2s}
.demo-jump button:hover{background:rgba(255,255,255,.08)}
.demo-close{width:26px;height:26px;border-radius:8px;color:#8e9aad;flex:none}
.demo-bar.min .demo-tip,.demo-bar.min .demo-jump{display:none}

/* ---------- Entrance ---------- */
.reveal{animation:rise 1s var(--ease-out) both;animation-delay:calc(var(--d,0) * 90ms + 150ms)}
@keyframes rise{from{opacity:0;transform:translateY(18px);filter:blur(6px)}}
.flow{animation:rise 1.1s .35s var(--ease-out) both}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:1fr;max-width:620px}
  .intro{padding-top:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .support-inner{grid-template-columns:1fr;max-width:620px}
  .flow{order:0}
}
@media (max-width:640px){
  .header{padding:14px 16px}
  .secure span{display:none}
  .secure{padding:8px}
  .layout{padding:4px 16px 40px;gap:28px}
  .hero-title{margin:14px 0 12px}
  .lead{font-size:var(--text-base)}
  .stats{margin-top:24px}
  .stat{padding:14px}
  .guide{grid-template-columns:1fr;gap:8px}
  .guide li{flex-direction:row;align-items:flex-start;gap:12px;padding:12px}
  .card-stage{padding:0 4px;height:min(52vw,200px)}
  .rcard-code{margin:8px 0}
  .rcard-plan-term{font-size:.62rem}
  .rcard-face{padding:16px 18px}
  .rcard-plan-name{font-size:1.05rem}
  .flow-box{padding:6px 16px 16px}
  .nav-tabs{margin:6px -6px 14px}
  .progress li span{font-size:.72rem}
  .otp-cells{gap:6px}
  .otp-cells span{height:50px;font-size:1.2rem}
  .demo-tip{display:none}
  .demo-bar{bottom:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media (max-width:1080px){
  .intro{display:contents}
  .intro-head{order:1}
  .flow{order:2}
  .intro-body{order:3}
}

/* ---------- Shell：左侧服务栏 + 主体（整体右移） ---------- */
.shell{position:relative;z-index:2;display:grid;grid-template-columns:232px minmax(0,1fr);gap:clamp(28px,3vw,56px);max-width:1560px;margin:0 auto;padding:0 clamp(18px,3vw,48px)}
.shell .layout{max-width:none;margin:0;padding-left:0;padding-right:0;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:clamp(32px,4.5vw,80px)}
.rail{position:sticky;top:20px;align-self:start;display:flex;flex-direction:column;gap:12px;padding-top:clamp(16px,4vh,48px);animation:rise 1s .5s var(--ease-out) both}
.rail-card{position:relative;display:flex;flex-direction:column;gap:6px;padding:16px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:border-color .3s,transform .4s var(--ease-out)}
.rail-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.rail-card h3{font-size:var(--text-sm);font-weight:600;line-height:1.45}
.rail-card p{font-size:.78rem;color:var(--muted);line-height:1.6}
.rail-k{align-self:flex-start;font:500 .64rem/1 var(--font-mono);letter-spacing:.12em;color:var(--accent);padding:5px 8px;border-radius:999px;border:1px solid color-mix(in srgb,var(--accent) 35%,transparent);margin-bottom:4px}
.rail-k.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,transparent)}
.rail-card .qr.lg{width:100%;height:auto;aspect-ratio:1;max-width:200px;align-self:center;margin:4px 0 8px;border-radius:14px;font-size:.7rem;padding-bottom:10px;background-size:72%;background-position:center 14%}
.rail-card.row{flex-direction:row;align-items:center;gap:12px}
.rail-card .tags{margin-top:4px}
.rail-card.note{border-color:color-mix(in srgb,var(--warn) 22%,var(--line))}

@media (max-width:1279px){
  .shell{display:flex;flex-direction:column;max-width:none;padding:0}
  .shell .layout{max-width:1280px;margin:0 auto;padding:clamp(16px,4vh,48px) clamp(18px,4vw,48px) 40px;width:100%}
  .rail{order:2;position:static;display:grid;grid-template-columns:1.5fr 1fr 1fr;align-items:start;max-width:1280px;width:100%;margin:0 auto;padding:0 clamp(18px,4vw,48px) 40px;animation:none}
  .rail-card:first-child{display:grid;grid-template-columns:120px 1fr;column-gap:16px}
  .rail-card:first-child .rail-k{grid-column:1/-1;justify-self:start}
  .rail-card:first-child .qr.lg{grid-row:2/span 3;margin:0}
}
@media (max-width:1080px){
  .shell .layout{max-width:620px;grid-template-columns:1fr}
  .rail{grid-template-columns:1fr;max-width:620px}
}
@media (max-width:640px){
  .shell .layout{padding:4px 16px 32px;gap:28px}
  .rail{padding:0 16px 32px}
  .rail-card:first-child{grid-template-columns:96px 1fr}
}

/* iCloud 提示（邮箱步骤内） */
.notice{display:flex;gap:10px;align-items:flex-start;padding:11px 13px;border-radius:var(--r-md);border:1px solid color-mix(in srgb,var(--warn) 32%,transparent);background:color-mix(in srgb,var(--warn) 7%,transparent);color:var(--warn);transition:border-color .3s,background .3s,box-shadow .3s}
.notice svg{flex:none;margin-top:2px}
.notice strong{display:block;font-size:var(--text-sm);font-weight:600;color:var(--text)}
.notice p{font-size:.78rem;color:var(--muted);line-height:1.55;margin-top:1px}
.notice.hit{border-color:color-mix(in srgb,var(--warn) 70%,transparent);background:color-mix(in srgb,var(--warn) 13%,transparent);box-shadow:0 0 0 4px color-mix(in srgb,var(--warn) 12%,transparent);animation:shake .45s var(--ease-out)}
.rail-card .qr.lg{max-width:210px}
@media (max-width:1279px){
  .rail{grid-template-columns:1.4fr 1fr}
  .rail-card{display:grid;grid-template-columns:120px 1fr;column-gap:16px;align-content:start}
  .rail-card .rail-k{grid-column:1/-1;justify-self:start}
  .rail-card .qr.lg{grid-row:2/span 3;margin:0}
}
@media (max-width:1080px){.rail{grid-template-columns:1fr}}
@media (max-width:640px){.rail-card{grid-template-columns:96px 1fr}}

/* ================= 生产环境：对接原业务脚本 ================= */
/* 进度：topup.js 会给 <=当前步的 li 加 .active，这里用 .cur/.done 表达 */
.progress li.active{color:var(--muted)}
.progress li.active i{background:var(--accent);border-color:var(--accent);box-shadow:none;transform:none}
.progress li.cur{color:var(--text)}
.progress li.cur i{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent);transform:scale(1.15)}

/* 后台配置的侧栏模块 */
.rail{gap:0}
.rail.empty{visibility:hidden}
.content-sidebar{display:flex;flex-direction:column;gap:12px}
.content-sidebar+.content-sidebar{margin-top:12px}
.sidebar-block{display:flex;flex-direction:column;gap:8px;padding:16px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:border-color .3s,transform .4s var(--ease-out)}
.sidebar-block:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.sidebar-block.moved{display:none!important}
.sidebar-block h2{font-size:var(--text-sm);font-weight:600;line-height:1.5}
.sidebar-block img{display:block;width:100%;max-width:100%!important;height:auto;margin:2px auto 4px!important;border-radius:14px;background:#fff;padding:8px;box-sizing:border-box}
.sidebar-block p{font-size:.78rem;color:var(--muted);line-height:1.65;white-space:pre-line}
.sidebar-block .contact-value{font-family:var(--font-mono);color:var(--text)}
.sidebar-block a{font-size:.8rem;color:var(--accent)}
.mobile-sidebar{display:none}
@media (max-width:1279px){
  .rail{display:none}
  .mobile-sidebar:not([hidden]){display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:1280px;width:100%;margin:0 auto;padding:0 clamp(18px,4vw,48px) 40px}
  .mobile-sidebar .sidebar-block img:not([style*=width]){width:180px}
}
@media (max-width:1080px){.mobile-sidebar:not([hidden]){max-width:620px}}
@media (max-width:640px){.mobile-sidebar:not([hidden]){grid-template-columns:1fr;padding:0 16px 32px}}

/* 订单查询结果（topup.js 生成） */
#query-results{display:grid;gap:12px}
.query-order{border:1px solid var(--line);border-radius:var(--r-md);padding:14px;display:grid;gap:10px;animation:rowIn .5s var(--ease-out) both}
.query-order h3{font-size:var(--text-sm);font-weight:600;color:var(--accent)}
.query-order .summary,.summary:not(:has(>div)){display:grid;grid-template-columns:auto 1fr;border:0;border-radius:0}
.query-order .summary dt,.query-order .summary dd{padding:6px 0;border-top:1px solid var(--line);font-size:.82rem}
.query-order .summary dd{text-align:right;word-break:break-all;font-family:var(--font-mono)}
.query-order .summary dt:first-of-type,.query-order .summary dd:first-of-type{border-top:0}
.query-empty{font-size:var(--text-sm);color:var(--muted);padding:12px;border:1px dashed var(--line-strong);border-radius:var(--r-md)}

/* 处理中：不展示虚构步骤，只做不确定进度条 */
.proc-bar{position:relative;height:3px;border-radius:3px;background:var(--line);overflow:hidden}
.proc-bar span{position:absolute;inset:0 auto 0 0;width:35%;border-radius:3px;background:linear-gradient(90deg,transparent,var(--accent),var(--accent-2));animation:procbar 1.6s var(--ease-out) infinite}
@keyframes procbar{from{transform:translateX(-100%)}to{transform:translateX(300%)}}

/* 回执 */
.receipt{width:100%;border-radius:var(--r-md);border:1px solid var(--line);animation:rowIn .6s var(--ease-out) both}
#cashback-contact .sidebar-block{background:transparent;border:0;padding:8px 0 0;backdrop-filter:none}
#cashback-contact .sidebar-block img{max-width:min(100%,240px)!important}
.receipt-viewer{margin:auto;max-width:min(92vw,980px);width:100%;border:1px solid var(--line-strong);border-radius:var(--r-lg);background:var(--glass-strong);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);color:var(--text);padding:18px;box-shadow:var(--shadow)}
.receipt-viewer::backdrop{background:rgba(3,5,10,.7);backdrop-filter:blur(4px)}
.receipt-viewer[open]{animation:rise .5s var(--ease-out)}
.receipt-viewer header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.receipt-viewer h2{font-size:var(--text-lg);font-weight:600}
.receipt-viewer-picture img{width:100%;height:auto;border-radius:var(--r-md);margin:12px 0}
.receipt-save-actions{display:flex;gap:10px;flex-wrap:wrap}
.receipt-save-actions .secondary{padding:0 16px}
.theme-text{height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line-strong);color:var(--text);font-size:var(--text-sm)}
button:disabled{cursor:not-allowed}

/* 主题按钮：图标由 CSS 绘制，按钮文字（可在编辑器修改）仅供读屏 */
.theme{font-size:0;line-height:0}
.theme::before{content:"";width:16px;height:16px;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M15.5 12.6A6.5 6.5 0 0 1 7.4 4.5a6.5 6.5 0 1 0 8.1 8.1Z' fill='none' stroke='black' stroke-width='1.5' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M15.5 12.6A6.5 6.5 0 0 1 7.4 4.5a6.5 6.5 0 1 0 8.1 8.1Z' fill='none' stroke='black' stroke-width='1.5' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
[data-theme=light] .theme::before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='3.4' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cpath d='M10 2v2M10 16v2M2 10h2M16 10h2M4.3 4.3l1.4 1.4M14.3 14.3l1.4 1.4M4.3 15.7l1.4-1.4M14.3 5.7l1.4-1.4' stroke='black' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='3.4' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cpath d='M10 2v2M10 16v2M2 10h2M16 10h2M4.3 4.3l1.4 1.4M14.3 14.3l1.4 1.4M4.3 15.7l1.4-1.4M14.3 5.7l1.4-1.4' stroke='black' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E")}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
/* 编辑器预览：点击编辑的提示框 */
.ui-editing [data-ui-key]:hover,.ui-editing [data-ui-placeholder]:hover,.ui-editing .sidebar-block:hover{outline:2px dashed var(--accent);outline-offset:3px;cursor:pointer}
.ui-editing [data-ui-key]:empty{display:inline-block;min-width:16px;min-height:16px;border:1px dashed var(--accent)}
.ui-picked{outline:2px solid var(--accent)!important;outline-offset:3px}
.ui-editing .sidebar-block.moved{display:none!important}
.preview-safety{position:fixed;left:50%;bottom:14px;transform:translateX(-50%);z-index:50;padding:8px 14px;border-radius:999px;border:1px solid var(--line-strong);background:var(--glass-strong);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--muted);font-size:.75rem;white-space:nowrap;pointer-events:none}
[data-ui-key]{white-space:pre-line}

/* ================= claude.aiuv.ai embed ================= */
html[data-embed="1"] .header,
html[data-embed="1"] .rail,
html[data-embed="1"] .mobile-sidebar,
html[data-embed="1"] .skip {
  display: none !important;
}

html[data-embed="1"] .shell {
  display: block;
  max-width: none;
  padding: 0;
}

html[data-embed="1"] .shell .layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  gap: clamp(32px, 4.5vw, 72px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 30px clamp(22px, 3vw, 36px) 54px;
}

html[data-embed="1"] .intro {
  display: block;
  order: initial;
  padding-top: 22px;
}

html[data-embed="1"] .flow {
  order: initial;
}

html[data-embed="1"] .intro-body {
  order: initial;
}

@media (max-width: 860px) {
  html[data-embed="1"] .shell .layout {
    grid-template-columns: minmax(0, 1fr);
    max-width: 620px;
    gap: 30px;
    padding: 20px 16px 44px;
  }

  html[data-embed="1"] .intro {
    padding-top: 6px;
  }
}