/* Ai1号站 · 全站基础样式（浅色、多彩、带呼吸感的动效） */
:root{
  color-scheme:light;
  --paper:#fbfaf7;--white:#fff;--ink:#1d1b2c;--muted:#5d5b70;--line:#e9e6f0;--wrap:1180px;
  --c-home:#6d5bff;--c-codex:#0ea59a;--c-api:#a24cf0;--c-compute:#f08a00;--c-business:#4f5bea;
  --c-video:#e8337f;--c-trading:#10a36b;--c-downloads:#1d8fe0;--c-opc:#f0532b;
  --accent:var(--c-home);
  --spring:cubic-bezier(.34,1.56,.64,1);
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow:0 1px 2px #1d1b2c0a,0 6px 18px #1d1b2c0d,0 22px 48px -18px #1d1b2c1f;
  --radius:20px;
}
body{--accent-soft:color-mix(in srgb,var(--accent) 11%,#fff);--accent-mid:color-mix(in srgb,var(--accent) 30%,#fff);--accent-ink:color-mix(in srgb,var(--accent) 78%,#120d2a);--shadow-lg:0 2px 4px #1d1b2c0a,0 14px 34px #1d1b2c12,0 40px 80px -30px color-mix(in srgb,var(--accent) 45%,transparent);}
body[data-theme=home]{--accent:var(--c-home)}body[data-theme=codex]{--accent:var(--c-codex)}body[data-theme=api]{--accent:var(--c-api)}
body[data-theme=compute]{--accent:var(--c-compute)}body[data-theme=business]{--accent:var(--c-business)}body[data-theme=video]{--accent:var(--c-video)}
body[data-theme=trading]{--accent:var(--c-trading)}body[data-theme=downloads]{--accent:var(--c-downloads)}body[data-theme=opc]{--accent:var(--c-opc)}
[data-c=home]{--c:var(--c-home)}[data-c=codex]{--c:var(--c-codex)}[data-c=api]{--c:var(--c-api)}[data-c=compute]{--c:var(--c-compute)}
[data-c=business]{--c:var(--c-business)}[data-c=video]{--c:var(--c-video)}[data-c=trading]{--c:var(--c-trading)}[data-c=downloads]{--c:var(--c-downloads)}[data-c=opc]{--c:var(--c-opc)}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.7 system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:8px}
img{max-width:100%}
.wrap{width:min(var(--wrap),calc(100% - 48px));margin:auto}
.skip{position:absolute;left:-1000px}.skip:focus{left:12px;top:12px;z-index:200;background:#fff;padding:8px 12px;border-radius:8px}
main{position:relative;z-index:1;overflow-x:clip}

/* 背景：缓慢漂移的极光光斑 + 淡点阵 */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.aurora::after{content:"";position:absolute;inset:0;background-image:radial-gradient(#1d1b2c14 1px,transparent 1px);background-size:26px 26px;mask-image:linear-gradient(#000 0,transparent 75%)}
.aurora i{position:absolute;width:46vmax;height:46vmax;border-radius:50%;filter:blur(70px);opacity:.42;animation:drift 26s ease-in-out infinite alternate}
.aurora i:nth-child(1){background:var(--accent);left:-14vmax;top:-18vmax}
.aurora i:nth-child(2){background:#ffb84d;right:-16vmax;top:6vmax;animation-duration:32s;animation-delay:-8s;opacity:.3}
.aurora i:nth-child(3){background:#3fd0c9;left:24vw;top:48vh;animation-duration:38s;animation-delay:-15s;opacity:.24}
.aurora i:nth-child(4){background:#ff6fae;right:12vw;bottom:-28vmax;animation-duration:30s;animation-delay:-4s;opacity:.22}
@keyframes drift{0%{transform:translate(0,0) scale(1)}33%{transform:translate(6vw,4vh) scale(1.12)}66%{transform:translate(-4vw,8vh) scale(.92)}100%{transform:translate(3vw,-5vh) scale(1.06)}}

/* 顶栏 */
.top{position:sticky;top:0;z-index:50;background:#ffffffc4;backdrop-filter:saturate(1.6) blur(16px);-webkit-backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid #ffffff;box-shadow:0 1px 0 var(--line)}
.bar{min-height:72px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900}
.brand-mark{display:block;flex:none;width:42px;height:42px;mix-blend-mode:multiply;animation:breathe 4s ease-in-out infinite}
.brand-copy{display:flex;flex-direction:column;gap:1px}
.brand-name{font-size:23px;line-height:1.15;letter-spacing:-.03em}
.brand-tagline{font-size:12px;font-weight:600;line-height:1.4;color:var(--muted)}
.brand-domain{font-size:12px;font-weight:800;line-height:1.35;color:var(--ink)}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;font-size:15px;font-weight:700}
:where(.nav>a,.nav-toggle){--c:var(--c-home)}
.nav>a,.nav-toggle{position:relative;display:inline-flex;align-items:center;gap:7px;padding:9px 13px;border-radius:999px;transition:background .3s,color .3s}
.nav>a::before,.nav-toggle::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c);box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 18%,transparent);flex:none}
.nav>a:hover,.nav-toggle:hover,.nav>a[aria-current],.nav-dropdown.is-current .nav-toggle,.nav-toggle[aria-expanded=true]{background:color-mix(in srgb,var(--c) 12%,#fff);color:color-mix(in srgb,var(--c) 80%,#111)}
.nav .hot{position:absolute;top:-7px;right:-4px;font-size:10px;line-height:1;padding:3px 6px;border-radius:99px;background:linear-gradient(90deg,#ff7a18,#ff3d7f);color:#fff;font-weight:800;animation:bob 2.2s var(--ease) infinite}
.nav-dropdown{position:relative;display:flex;align-items:center}
.nav-toggle{font:inherit;font-weight:700;color:inherit;border:0;background:transparent;cursor:pointer;min-height:42px}
.nav-chevron{display:inline-block;font-size:11px;transition:transform .4s var(--spring)}
.nav-toggle[aria-expanded=true] .nav-chevron{transform:rotate(180deg)}
.nav-panel{position:absolute;top:calc(100% + 8px);left:-8px;z-index:60;width:236px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:8px;transform-origin:20% 0;animation:pop .45s var(--spring)}
.nav-panel[hidden]{display:none}
.nav-panel a{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;white-space:nowrap;font-weight:700;transition:background .25s,transform .35s var(--spring)}
.nav-panel a::before{content:"";width:9px;height:9px;border-radius:3px;background:var(--c)}
.nav-panel a:hover,.nav-panel a[aria-current]{background:color-mix(in srgb,var(--c) 12%,#fff);transform:translateX(4px)}
@keyframes pop{from{opacity:0;transform:translateY(-8px) scale(.94)}}

/* 文字与按钮 */
.eyebrow,.pill{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:800;letter-spacing:.04em;color:var(--accent-ink);margin:0 0 16px}
.pill{padding:7px 14px 7px 10px;border-radius:999px;background:#fff;border:1px solid var(--accent-mid);box-shadow:0 6px 18px -8px color-mix(in srgb,var(--accent) 50%,transparent)}
.pill b,.dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 var(--accent);animation:ping 2s infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 60%,transparent)}80%,100%{box-shadow:0 0 0 10px transparent}}
h1,h2,h3{letter-spacing:-.03em}
h2{font-size:clamp(28px,3.8vw,42px);line-height:1.25;margin:0 0 12px}
.sub{margin:0 0 30px;color:var(--muted);font-size:18px}
.grad{background:linear-gradient(90deg,var(--c-home),var(--c-video),var(--c-compute),var(--c-codex),var(--c-home));background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:flow 9s linear infinite}
.accent-text{color:var(--accent)}
@keyframes flow{to{background-position:300% 0}}
.lead{color:var(--muted);font-size:19px;max-width:34em;margin:22px 0 30px}
.buttons{display:flex;flex-wrap:wrap;gap:12px}
.btn{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 24px;min-height:54px;border-radius:999px;background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 70%,#ff7ab6));color:#fff;font-weight:800;font-size:17px;border:0;cursor:pointer;box-shadow:0 10px 26px -8px color-mix(in srgb,var(--accent) 75%,transparent),inset 0 1px 0 #ffffff55;will-change:transform}
.btn::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,#ffffff70,transparent);transform:skewX(-20deg);animation:shine 4.5s ease-in-out infinite}
.btn.alt{background:#fff;color:var(--accent-ink);box-shadow:0 0 0 1.5px var(--accent-mid),var(--shadow)}
.btn.alt::after{display:none}
.btn.small{min-height:44px;padding:9px 18px;font-size:15px}
@keyframes shine{0%,60%{left:-60%}100%{left:130%}}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}

/* 滚动进入：带回弹 */
[data-reveal]{opacity:0;transform:translateY(28px) scale(.97);transition:opacity .7s var(--ease),transform .9s var(--spring);transition-delay:calc(var(--i,0) * 70ms)}
[data-reveal].in{opacity:1;transform:none}

/* 首页主视觉 */
.hero{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:40px;padding:64px 0 40px;min-height:min(680px,calc(100vh - 72px))}
.hero h1{font-size:clamp(42px,6.2vw,78px);line-height:1.1;margin:0;letter-spacing:-.05em}
.hero h1>span{display:block}
.stats{display:grid;grid-template-columns:repeat(4,auto);gap:10px 28px;margin-top:38px;justify-content:start}
.stat strong{display:block;font-size:30px;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.stat>span{font-size:14px;color:var(--muted);font-weight:600}
.stat:nth-child(1) strong{color:var(--c-compute)}.stat:nth-child(2) strong{color:var(--c-home)}.stat:nth-child(3) strong{color:var(--c-codex)}.stat:nth-child(4) strong{color:var(--c-video)}
.stage{position:relative;container-type:size;aspect-ratio:1/1;max-width:540px;width:100%;justify-self:center}
.stage canvas{position:absolute;inset:0;width:100%;height:100%}
.stage::before{content:"";position:absolute;inset:12%;border-radius:50%;background:radial-gradient(circle,#fff 0,#fff0 70%);}
.ring{position:absolute;inset:8%;border-radius:50%;border:1.5px dashed color-mix(in srgb,var(--c-home) 35%,transparent);animation:spin 60s linear infinite}
.ring.r2{inset:22%;border-style:solid;border-color:#ffc86a55;animation-duration:40s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.stage .ip{position:absolute;left:50%;top:50%;--s:min(42cqw,230px);translate:-50% -54%}
.orbit{position:absolute;inset:0;animation:spin 46s linear infinite}
.orbit span{--a:0deg;position:absolute;left:50%;top:50%;transform:rotate(var(--a)) translate(clamp(130px,19vw,232px)) rotate(calc(-1 * var(--a)))}
.orbit span b{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;padding:8px 14px;border-radius:999px;background:#fff;box-shadow:var(--shadow);font-size:15px;font-weight:800;color:color-mix(in srgb,var(--c) 85%,#111);border:1.5px solid color-mix(in srgb,var(--c) 30%,#fff);translate:-50% -50%;animation:counter 46s linear infinite;transition:scale .4s var(--spring)}
.orbit span b:hover{scale:1.12}
@keyframes counter{to{rotate:-360deg}}

/* 滚动跑马灯 */
.marquee{position:relative;z-index:1;overflow:hidden;padding:18px 0;border-block:1px solid var(--line);background:#ffffffa8;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee div{display:flex;gap:14px;width:max-content;animation:slide 38s linear infinite}
.marquee span{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;font-size:15px;white-space:nowrap}
.marquee span i{width:8px;height:8px;border-radius:50%;background:var(--c,var(--c-home))}
.marquee:hover div{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}

/* 区块与入口卡片 */
.section{padding:84px 0 40px}
.section-head{max-width:900px;margin-bottom:34px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
:where(.card){--c:var(--accent)}
.card{position:relative;display:flex;flex-direction:column;min-height:250px;padding:24px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);border:1px solid #fff;transform-style:preserve-3d;will-change:transform;isolation:isolate;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;background:radial-gradient(120% 80% at 100% 0,color-mix(in srgb,var(--c) 16%,transparent),transparent 60%);transition:opacity .4s}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:conic-gradient(from var(--ang,0deg),transparent 0 70%,var(--c),transparent);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .4s;animation:rot 3.5s linear infinite}
.card:hover::after,.card.featured::after{opacity:1}
@property --ang{syntax:"<angle>";inherits:false;initial-value:0deg}
@keyframes rot{to{--ang:360deg}}
.icon{display:grid;place-items:center;width:56px;height:56px;border-radius:18px;font-size:28px;background:color-mix(in srgb,var(--c) 13%,#fff);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c) 22%,#fff);transition:transform .5s var(--spring)}
.card:hover .icon{transform:rotate(-8deg) scale(1.1)}
.card h3{font-size:21px;margin:18px 0 6px}
.card p{margin:0 0 18px;color:var(--muted);font-size:15.5px;line-height:1.65}
.arrow{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:color-mix(in srgb,var(--c) 85%,#111);font-weight:800;font-size:15.5px}
.arrow::after{content:"→";transition:transform .4s var(--spring)}
.card:hover .arrow::after{transform:translateX(6px)}
.tag{position:absolute;top:18px;right:18px;padding:4px 10px;border-radius:999px;font-size:12.5px;font-weight:800;color:#fff;background:linear-gradient(90deg,#ff7a18,#ff3d7f);box-shadow:0 6px 14px -6px #ff3d7f;animation:bob 2.4s var(--ease) infinite}
.tag.soft{background:color-mix(in srgb,var(--c) 14%,#fff);color:color-mix(in srgb,var(--c) 85%,#111);box-shadow:none;animation:none}

/* 新手三步 */
.journey{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative;counter-reset:s}
.journey::before{content:"";position:absolute;left:8%;right:8%;top:46px;height:3px;background:repeating-linear-gradient(90deg,var(--c-home) 0 10px,transparent 10px 20px);background-size:200% 100%;opacity:.35;animation:dash 2.2s linear infinite}
@keyframes dash{to{background-position:-40px 0}}
.jstep{position:relative;padding:26px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);border:1px solid #fff}
.jstep .num{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--c);color:#fff;font-weight:900;font-size:19px;box-shadow:0 0 0 7px color-mix(in srgb,var(--c) 16%,#fff);animation:breathe 3s ease-in-out infinite}
.jstep:nth-child(2) .num{animation-delay:-1s}.jstep:nth-child(3) .num{animation-delay:-2s}
.jstep h3{margin:18px 0 6px;font-size:21px}
.jstep p{margin:0 0 14px;color:var(--muted);font-size:15.5px}
.jstep small{display:inline-block;padding:3px 10px;border-radius:99px;background:color-mix(in srgb,var(--c) 11%,#fff);color:color-mix(in srgb,var(--c) 85%,#111);font-weight:800;font-size:13px}
.jstep a{display:block;margin-top:14px;font-weight:800;color:color-mix(in srgb,var(--c) 85%,#111)}

/* AI 对话演示 */
.demo{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center}
.chat{position:relative;padding:22px;border-radius:26px;background:#fff;box-shadow:var(--shadow-lg);border:1px solid #fff}
.chat-top{display:flex;gap:7px;margin-bottom:16px}.chat-top i{width:11px;height:11px;border-radius:50%;background:#ff6b6b}.chat-top i:nth-child(2){background:#ffc145}.chat-top i:nth-child(3){background:#3ccf7a}
.msg{max-width:88%;padding:12px 16px;border-radius:18px;font-size:16px;margin:10px 0;line-height:1.65}
.msg.me{margin-left:auto;background:linear-gradient(135deg,var(--c-home),#8f7bff);color:#fff;border-bottom-right-radius:6px}
.msg.ai{display:flex;gap:10px;background:#f6f4fb;border-bottom-left-radius:6px;min-height:52px}
.msg.ai .mini-ip{flex:none;width:30px;height:30px;margin-top:2px}
.caret{display:inline-block;width:2px;height:1.1em;vertical-align:-3px;background:var(--c-home);margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
:where(.demo-tabs button){--c:var(--c-home)}
.demo-tabs button{font:inherit;font-size:15px;font-weight:800;padding:9px 16px;border-radius:999px;border:1.5px solid color-mix(in srgb,var(--c) 30%,#fff);background:#fff;color:color-mix(in srgb,var(--c) 85%,#111);cursor:pointer;transition:transform .4s var(--spring),background .3s}
.demo-tabs button[aria-pressed=true]{background:var(--c);color:#fff;transform:scale(1.06)}

/* 收尾号召 */
.cta-band{position:relative;overflow:hidden;margin:80px auto 70px;padding:54px;border-radius:32px;text-align:center;background:linear-gradient(120deg,#efeaff,#fff1e3 50%,#e3fbf6);box-shadow:var(--shadow)}
.cta-band h2{font-size:clamp(28px,4vw,44px)}
.cta-band p{color:var(--muted);margin:0 auto 26px;max-width:32em}
.cta-band .buttons{justify-content:center}

/* 详情页通用 */
.page-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;padding:56px 0 28px}
.page-hero h1{font-size:clamp(38px,5.4vw,66px);line-height:1.12;margin:0;letter-spacing:-.045em}
.page-hero h1>span{display:block;color:var(--accent)}
.page-hero .lead{margin-bottom:26px}
.hero-ip{position:relative;container-type:size;justify-self:center;width:min(300px,80%);aspect-ratio:1}
.hero-ip::before{content:"";position:absolute;inset:6%;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 22%,#fff),#fff0 68%);animation:breathe 4s ease-in-out infinite}
.hero-ip .ip{position:absolute;left:50%;top:50%;--s:56cqw;translate:-50% -54%}
.hero-ip .spark{position:absolute;font-size:22px;animation:float 5s ease-in-out infinite}
.hero-ip .spark:nth-of-type(2){animation-delay:-2s}.hero-ip .spark:nth-of-type(3){animation-delay:-3.5s}
@keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-14px) rotate(8deg)}}
.back{display:inline-flex;gap:6px;align-items:center;color:var(--accent-ink);font-weight:800;margin-bottom:22px;transition:transform .4s var(--spring)}
.back:hover{transform:translateX(-4px)}
.block{padding:30px 0 34px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.panel{position:relative;padding:26px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);border:1px solid #fff}
.panel h3{margin:14px 0 6px;font-size:21px}
.panel p{margin:0;color:var(--muted);font-size:16px}
.notice{position:relative;display:block;margin-top:24px;padding:16px 20px 16px 52px;background:var(--accent-soft);border-radius:16px;color:var(--accent-ink);font-size:15.5px}
.notice::before{content:"💡";position:absolute;left:20px;top:15px;font-size:20px;line-height:1.4}

/* 白嫖算力：主推卡 */
.mega{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:30px;padding:34px;border-radius:30px;background:linear-gradient(140deg,#fff 0,#fff8ec 60%,#ffeedd 100%);box-shadow:var(--shadow-lg);border:1.5px solid #ffe2b8;overflow:hidden;isolation:isolate}
.mega::before{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;background:radial-gradient(circle,#ffc56b66,#fff0 70%);z-index:-1;animation:breathe 5s ease-in-out infinite}
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:linear-gradient(90deg,#ff7a18,#ff3d7f);color:#fff;font-weight:900;font-size:14px;box-shadow:0 8px 20px -8px #ff3d7f;animation:bob 2.4s var(--ease) infinite}
.mega h2{margin:16px 0 8px;font-size:clamp(28px,3.6vw,40px)}
.big-num{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:6px 0 14px}
.big-num strong{font-size:clamp(46px,6vw,70px);line-height:1;color:var(--c-compute);letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.big-num>span{font-weight:800;font-size:20px}
.worth{display:inline-block;padding:4px 12px;border-radius:10px;background:#fff;border:1.5px dashed #f5b04f;color:#b25a00;font-weight:900}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.chips span{padding:6px 12px;border-radius:999px;background:#fff;border:1px solid #f4dcc0;font-size:14px;font-weight:700;transition:transform .4s var(--spring)}
.chips span:hover{transform:translateY(-3px)}
.claim-steps{display:grid;gap:14px;align-content:center}
.claim{position:relative;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;padding:18px;border-radius:20px;background:#fff;box-shadow:var(--shadow);border:1.5px solid #fff;transition:border-color .3s}
.claim .n{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;background:var(--c-compute);color:#fff;font-weight:900;font-size:19px;transition:transform .5s var(--spring),background .3s}
.claim h3{margin:0;font-size:18px}
.claim p{margin:2px 0 10px;color:var(--muted);font-size:14.5px;line-height:1.55}
.claim.done{border-color:#7ad9a6}
.claim.done .n{background:#22b26b;transform:rotate(360deg)}
.claim.done .n span{display:none}.claim.done .n::after{content:"✓"}
.perks{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
:where(.perk){--c:var(--c-compute)}
.perk{position:relative;display:flex;flex-direction:column;padding:26px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);border:1.5px solid #fff;will-change:transform}
.perk .logo{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;font-weight:900;font-size:20px;color:#fff;background:linear-gradient(135deg,var(--c),color-mix(in srgb,var(--c) 60%,#fff))}
.perk h3{margin:16px 0 4px;font-size:20px}
.perk .val{font-size:30px;font-weight:900;color:color-mix(in srgb,var(--c) 85%,#111);letter-spacing:-.03em;margin:4px 0}
.perk p{color:var(--muted);font-size:15px;margin:0 0 18px}
.perk .btn{margin-top:auto;align-self:flex-start}
.perk.done{border-color:#7ad9a6}
.perk.done .btn{background:#22b26b}
.progress{display:flex;align-items:center;gap:16px;margin:26px 0 0;padding:16px 20px;border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.progress b{white-space:nowrap}
.bar-track{flex:1;height:12px;border-radius:99px;background:#f3eee6;overflow:hidden}
.bar-fill{height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#ffb347,#ff6a3d,#ff3d7f);background-size:200% 100%;animation:flow 3s linear infinite;transition:width .9s var(--spring)}

/* 套餐与常见问题 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{position:relative;display:flex;flex-direction:column;padding:28px;border-radius:24px;background:#fff;box-shadow:var(--shadow);border:1.5px solid #fff;will-change:transform}
.plan.best{border-color:var(--accent-mid);box-shadow:var(--shadow-lg);background:linear-gradient(180deg,var(--accent-soft),#fff 45%)}
.plan h3{margin:0 0 4px;font-size:22px}
.plan .price{font-size:30px;font-weight:900;color:var(--accent-ink);margin:12px 0 2px;letter-spacing:-.02em}
.plan small{color:var(--muted)}
.plan ul{list-style:none;padding:0;margin:18px 0 22px;display:grid;gap:9px}
.plan li{display:flex;gap:9px;font-size:15.5px}
.plan li::before{content:"✓";color:var(--accent);font-weight:900}
.plan .btn{margin-top:auto}
.faq{display:grid;gap:12px;max-width:820px}
.faq details{border-radius:18px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:800;font-size:17px;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;line-height:1;color:var(--accent);transition:transform .45s var(--spring)}
.faq details[open] summary::after{transform:rotate(135deg)}
.faq details p{margin:0;padding:0 22px 20px;color:var(--muted);animation:pop .5s var(--spring)}
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:f}
.flow li{list-style:none;counter-increment:f;padding:24px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.flow li::before{content:counter(f);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;font-weight:900;margin-bottom:12px}
.flow h3{margin:0 0 6px;font-size:19px}.flow p{margin:0;color:var(--muted);font-size:15.5px}
.flow{padding:0;margin:0}

/* 页脚 */
.foot{position:relative;z-index:1;margin-top:40px;padding:34px 0 120px;border-top:1px solid var(--line);background:#ffffffb8;color:var(--muted);font-size:14.5px}
.foot .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.foot a{font-weight:800;color:var(--ink)}
.foot-count{position:absolute;inset-inline:0;bottom:16px;text-align:center;font-variant-numeric:tabular-nums;font-size:13px}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}
.foot-links a{font-weight:600;color:var(--muted)}.foot-links a:hover{color:var(--accent)}

/* ========== IP 形象「小壹」 ========== */
.ip{--s:120px;position:relative;width:var(--s);height:calc(var(--s) * 1.18);user-select:none;-webkit-user-select:none;transition:transform .5s var(--spring)}
.ip-in{position:absolute;inset:0;animation:hover-float 3.6s ease-in-out infinite}
.ip-body{position:absolute;left:0;top:13%;width:100%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 36% 30%,#3d362f 0,#1d1915 42%,#0c0a09 74%);
  box-shadow:inset 0 0 0 calc(var(--s)*.008) #ffc2667a,inset 0 calc(var(--s)*.03) calc(var(--s)*.06) #ffb94a3d,inset 0 calc(var(--s)*-.04) calc(var(--s)*.08) #ff9e3424,0 0 calc(var(--s)*.12) #ffb04a40,0 calc(var(--s)*.1) calc(var(--s)*.18) #2a1a0a33;
  transition:transform .5s var(--spring)}
.ip-body::before{content:"";position:absolute;inset:0;border-radius:50%;background:radial-gradient(ellipse 60% 22% at 50% 0,#ffc76d75,transparent 70%)}
.ip-eyes{position:absolute;left:50%;top:44%;display:flex;gap:calc(var(--s)*.16);translate:calc(-50% + var(--ex,0px)) calc(-50% + var(--ey,0px));transition:translate .25s var(--ease)}
.ip-eyes i{display:block;width:calc(var(--s)*.07);height:calc(var(--s)*.145);border-radius:99px;background:linear-gradient(#fffaf0,#ffe9b8);box-shadow:0 0 calc(var(--s)*.03) #ffd67d,0 0 calc(var(--s)*.08) #ffb13d;transition:height .12s,border-radius .2s,background .2s;transform-origin:50% 60%}
.ip.blink .ip-eyes i{height:calc(var(--s)*.016)}
.ip.happy .ip-eyes i{height:calc(var(--s)*.06);background:transparent;border:calc(var(--s)*.022) solid #ffe9b8;border-bottom:0;border-radius:99px 99px 0 0;width:calc(var(--s)*.1)}
.ip.sleep .ip-eyes i{height:calc(var(--s)*.018);box-shadow:0 0 calc(var(--s)*.02) #ffd67d}
.ip.wow .ip-eyes i{height:calc(var(--s)*.18);width:calc(var(--s)*.09)}
.ip-halo{position:absolute;left:50%;top:0;width:58%;height:15%;translate:-50% 0;animation:halo 3.6s ease-in-out infinite}
.ip-halo::before,.ip-halo::after{content:"";position:absolute;inset:0;border-radius:50%;border:calc(var(--s)*.022) solid #ffcf74;box-shadow:0 0 calc(var(--s)*.04) #ffb23f,inset 0 0 calc(var(--s)*.03) #ffb23f}
.ip-halo::after{inset:-9% -5%;border-width:calc(var(--s)*.006);border-color:#ffd99a;opacity:.8;animation:glow 2.4s ease-in-out infinite}
.ip-halo i{position:absolute;inset:-18% -10%;border-radius:50%;background:radial-gradient(circle,#ffcf74 0 1px,transparent 1.5px) 0 0/9px 7px;mask:radial-gradient(closest-side,transparent 62%,#000 72%,transparent 100%);-webkit-mask:radial-gradient(closest-side,transparent 62%,#000 72%,transparent 100%);opacity:.8;animation:spin 9s linear infinite}
.ip-feet{position:absolute;left:0;right:0;bottom:0;height:9%}
.ip-feet i{position:absolute;bottom:0;width:17%;height:100%;border-radius:50%;background:radial-gradient(ellipse at 45% 30%,#3a332d,#0d0b0a 70%);box-shadow:0 0 calc(var(--s)*.03) #ffb04a33}
.ip-feet i:first-child{left:15%}.ip-feet i:last-child{right:15%}
.ip-shadow{position:absolute;left:18%;right:18%;bottom:-4%;height:6%;border-radius:50%;background:#2a1a0a;filter:blur(6px);opacity:.22;animation:shadow 3.6s ease-in-out infinite}
.ip.walking .ip-in{animation:waddle .5s ease-in-out infinite}
.ip.walking .ip-feet i:first-child{animation:step .5s ease-in-out infinite}
.ip.walking .ip-feet i:last-child{animation:step .5s ease-in-out infinite -.25s}
.ip.sleep .ip-in{animation:snooze 4s ease-in-out infinite}
@keyframes hover-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-5%)}}
@keyframes shadow{0%,100%{transform:scaleX(1);opacity:.22}50%{transform:scaleX(.82);opacity:.14}}
@keyframes halo{0%,100%{transform:translateY(0)}50%{transform:translateY(-14%)}}
@keyframes glow{0%,100%{opacity:.35;transform:scale(1)}50%{opacity:.95;transform:scale(1.06)}}
@keyframes waddle{0%,100%{transform:rotate(-4deg) translateY(0)}50%{transform:rotate(4deg) translateY(-4%)}}
@keyframes step{0%,100%{transform:translateY(0)}50%{transform:translateY(-55%)}}
@keyframes snooze{0%,100%{transform:scale(1,1)}50%{transform:scale(1.03,.97) translateY(1.5%)}}
.zzz{position:absolute;right:-6%;top:6%;font-weight:900;color:#8b7cf0;font-size:calc(var(--s)*.16);pointer-events:none;display:none}
.ip.sleep .zzz{display:block;animation:zz 2.4s ease-in infinite}
@keyframes zz{0%{opacity:0;transform:translate(0,0) scale(.6)}30%{opacity:1}100%{opacity:0;transform:translate(40%,-120%) scale(1.2)}}
.mini-ip{display:inline-block;border-radius:50%;background:radial-gradient(circle at 36% 30%,#3d362f,#0c0a09 74%) ;position:relative;box-shadow:0 0 0 1.5px #ffc2667a,0 0 8px #ffb04a55}
.mini-ip::before,.mini-ip::after{content:"";position:absolute;top:36%;width:11%;height:26%;border-radius:9px;background:#ffeec6;box-shadow:0 0 4px #ffb13d}
.mini-ip::before{left:33%}.mini-ip::after{right:33%}

/* 满屏行走的小壹 */
.walker{position:fixed;left:0;top:0;z-index:80;cursor:grab;touch-action:none;transition:opacity .4s;will-change:transform}
.walker .ip{--s:78px;transition:none;will-change:transform}
.walker.drag{cursor:grabbing}
.walker.away{opacity:0;pointer-events:none}
.walker.tucked{opacity:.95}
/* 坐在边框上：身体轻晃、两只小脚交替荡 */
.ip.sitting .ip-in{animation:sway 2.8s ease-in-out infinite;transform-origin:50% 100%}
.ip.sitting .ip-feet{bottom:-6%;left:6%;right:6%}
.ip.sitting .ip-feet i,.ip.dangle .ip-feet i{transform-origin:50% 0;animation:kick 1.1s ease-in-out infinite alternate}
.ip.sitting .ip-feet i:last-child,.ip.dangle .ip-feet i:last-child{animation-delay:-.55s}
.ip.dangle .ip-feet i{animation-duration:.32s}
.ip.dangle .ip-in{animation:none}
.ip.airborne .ip-in{animation:none}
.ip.airborne .ip-feet i{transform:translateY(-45%) scale(.9)}
.ip.sitting .ip-shadow,.ip.dangle .ip-shadow,.ip.airborne .ip-shadow{opacity:0}
.ip.wave .ip-in{animation:wave .45s ease-in-out 4}
.ip.dance .ip-in{animation:dance .55s ease-in-out 4}
.ip.dizzy .ip-eyes{animation:dizzy .5s linear infinite}
@keyframes sway{0%,100%{transform:rotate(-3deg)}50%{transform:rotate(3deg)}}
@keyframes kick{from{transform:rotate(-30deg) translateY(5%)}to{transform:rotate(30deg) translateY(30%)}}
@keyframes wave{0%,100%{transform:rotate(0)}25%{transform:rotate(-12deg)}75%{transform:rotate(12deg)}}
@keyframes dance{0%,100%{transform:translate(0,0) rotate(0)}25%{transform:translate(-8%,-10%) rotate(-8deg)}75%{transform:translate(8%,-10%) rotate(8deg)}}
@keyframes dizzy{to{rotate:360deg}}
/* 引导点击的小手 */
.ip-hint{position:absolute;left:50%;top:100%;font-size:24px;line-height:1;translate:-50% 2px;opacity:0;pointer-events:none;transition:opacity .3s}
.ip-hint.show{opacity:1;animation:point .7s ease-in-out infinite}
@keyframes point{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}
/* 互动粒子与可放置提示 */
.ip-particle{position:fixed;z-index:95;pointer-events:none;font-size:18px;translate:-50% -50%;animation:fly 1s ease-out forwards}
@keyframes fly{from{opacity:1;transform:translate(0,0) scale(.6)}to{opacity:0;transform:translate(var(--dx),var(--dy)) scale(1.2)}}
.ip-drop-target{outline:2.5px dashed var(--accent)!important;outline-offset:4px;box-shadow:0 0 0 8px var(--accent-soft),var(--shadow-lg)!important;transition:outline-color .2s}
.bubble{position:fixed;z-index:90;max-width:min(300px,calc(100vw - 32px));padding:14px 16px 12px;border-radius:18px;background:#fff;color:var(--ink);box-shadow:var(--shadow-lg);border:1.5px solid var(--accent-mid);font-size:15.5px;line-height:1.6;transform-origin:var(--ox,50%) 100%;animation:bubble .5s var(--spring);pointer-events:auto}
.bubble[hidden]{display:none}
.bubble::after{content:"";position:absolute;left:var(--tail,50%);bottom:-8px;width:14px;height:14px;background:#fff;border-right:1.5px solid var(--accent-mid);border-bottom:1.5px solid var(--accent-mid);transform:translateX(-50%) rotate(45deg)}
.bubble strong{color:var(--accent-ink)}
.bubble .b-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px}
.bubble .b-go{display:inline-flex;padding:6px 12px;border-radius:99px;background:var(--accent);color:#fff;font-weight:800;font-size:14px}
.bubble .b-rest{border:0;background:none;color:var(--muted);font:inherit;font-size:13px;cursor:pointer;padding:4px}
.bubble .b-rest:hover{color:var(--ink)}
@keyframes bubble{from{opacity:0;transform:translateY(10px) scale(.6)}}

/* 账号弹窗：邮箱验证码登录 */
.account-dialog{width:min(440px,calc(100% - 28px));border:0;border-radius:26px;padding:28px;color:var(--ink);background:#fff;box-shadow:var(--shadow-lg);animation:pop .45s var(--spring)}
.account-dialog::backdrop{background:#2a1a3a55;backdrop-filter:blur(4px)}
.feedback-dialog{width:min(480px,calc(100% - 28px))}
.feedback-dialog h2{margin:0;font-size:24px}
.feedback-dialog textarea{width:100%;min-height:130px;padding:12px;border:1.5px solid var(--line);border-radius:14px;background:#fbfaff;color:inherit;font:inherit;resize:vertical}
.feedback-dialog textarea::placeholder{color:#83808b}
.feedback-dialog textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
.feedback-status{min-height:1.5em;margin:0;font-size:14px;color:var(--muted)}
.feedback-actions{display:flex;justify-content:flex-end;gap:10px}
.feedback-actions .btn{min-height:42px;padding:8px 18px;font-size:15px}
.feedback-actions .btn[hidden]{display:none}
.feedback-actions .btn:disabled{opacity:.6;cursor:wait}
.account-close{position:absolute;right:12px;top:10px;width:38px;height:38px;border:0;border-radius:50%;background:#f4f2f8;font-size:24px;line-height:1;cursor:pointer;color:var(--muted)}
.account-head{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.account-head .mini-ip{flex:none;width:48px;height:48px}
.account-head h2{font-size:24px;margin:0 0 2px}
.account-muted{margin:0;color:var(--muted);font-size:14.5px;line-height:1.6}
.account-muted.small{font-size:13px}
.account-dialog form{display:grid;gap:8px}
.account-dialog label{font-size:14.5px;font-weight:800;margin-top:4px}
.account-dialog input{width:100%;min-height:50px;padding:10px 14px;border:1.5px solid var(--line);border-radius:14px;font:inherit;background:#fbfaff;transition:border-color .2s,box-shadow .2s}
.account-dialog input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.account-code-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.account-send{border:1.5px solid var(--accent-mid);background:#fff;color:var(--accent-ink);border-radius:14px;padding:0 16px;font:inherit;font-weight:800;font-size:15px;cursor:pointer;white-space:nowrap}
.account-send:disabled{opacity:.6;cursor:default}
.account-notice{margin:0;padding:10px 12px;border-radius:12px;background:#eafaf1;color:#167a48;font-size:14px}
.account-error{margin:0;padding:10px 12px;border-radius:12px;background:#fff0f2;color:#9e2343;font-size:14px}
.account-submit{margin-top:8px;width:100%}
.account-submit:disabled{opacity:.7;cursor:wait}

/* 响应式 */
@media(max-width:1020px){.cards{grid-template-columns:repeat(2,1fr)}.perks{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;padding-top:40px;gap:10px;min-height:0}.stage{max-width:430px}
  .demo,.mega,.page-hero{grid-template-columns:1fr}.hero-ip{width:220px}
  .stats{grid-template-columns:repeat(2,auto)}
  .perks,.plans,.grid3,.flow,.journey{grid-template-columns:1fr}.journey::before{display:none}
  .bar{flex-direction:column;align-items:flex-start;gap:6px;padding:10px 0}
  .nav{width:100%;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding:9px 6px 4px;margin:-4px -6px 0}
  .nav::-webkit-scrollbar{display:none}
  .nav>a,.nav-toggle{white-space:nowrap;padding:7px 11px}
  .nav-dropdown{position:static}.nav-panel{left:12px;top:auto}
}
@media(max-width:600px){
  body{font-size:16.5px}.wrap{width:calc(100% - 32px)}
  .top{position:relative}
  .cards{grid-template-columns:1fr}.card{min-height:0}
  .hero h1{font-size:40px}.lead{font-size:17px}
  .orbit span b{font-size:13px;padding:6px 10px}
  .section{padding:56px 0 24px}.mega{padding:22px}.cta-band{padding:34px 20px}
  .walker .ip{--s:60px}.btn{width:100%}.buttons{flex-direction:column}.perk .btn,.plan .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ===== 性能：装饰动画只动 transform / opacity（显卡合成，不触发重绘），外观保持不变 ===== */
/* 跳动的小圆点：原来动 box-shadow，改成一层光圈放大并变透明 */
.pill b,.dot{position:relative;box-shadow:none;animation:none}
.pill b::after,.dot::after{content:"";position:absolute;inset:0;border-radius:50%;background:var(--accent);pointer-events:none;animation:ping2 2s infinite;will-change:transform,opacity}
@keyframes ping2{0%{transform:scale(1);opacity:.6}80%,100%{transform:scale(3.2);opacity:0}}
/* 按钮扫光：原来动 left，改成 translateX（同样从左扫到右） */
.btn::after{animation:shine2 4.5s ease-in-out infinite;will-change:transform}
@keyframes shine2{0%,60%{transform:translateX(0) skewX(-20deg)}100%{transform:translateX(475%) skewX(-20deg)}}
/* 卡片旋转彩边：平时透明看不见却一直在转；只在悬停和推荐卡上转 */
.card::after{animation-play-state:paused}
.card:hover::after,.card.featured::after{animation-play-state:running}
/* 渐变流动文字 / 进度条：流动很慢，每秒刷新 20 次就够（原来 60 次） */
.grad{animation-timing-function:steps(180)}
.bar-fill{animation-timing-function:steps(60)}
/* 新手路线虚线：原来动 background-position，改成整条平移一个周期 */
.journey::before{right:calc(8% - 20px);background-size:auto;animation:dash2 1.1s linear infinite;will-change:transform}
@keyframes dash2{to{transform:translateX(-20px)}}
.rv-fast [data-reveal]{transition-duration:.25s,.35s;transition-delay:0s}