/* =========================================================
   星管家 — Product-led AI commerce theme
   ========================================================= */

:root{
  --bg:#f5f6fb;--surface:#fff;--surface-2:#f9f9fd;
  --ink:#202036;--dim:#686a80;--mute:#9899aa;
  --purple:#7055ea;--purple-2:#9a70f5;--purple-deep:#5739d6;
  --green:#20ad83;--gold:#f6a245;
  --line:rgba(37,38,68,.10);--line-strong:rgba(37,38,68,.18);
  --shadow:0 28px 80px -36px rgba(41,35,94,.32);
  --font-display:"Space Grotesk","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --container:1280px;--radius:22px;--ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:88px;background:var(--bg)}
body{margin:0;font-family:var(--font-body);background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}figure{margin:0}
h1,h2,h3{font-family:var(--font-display);line-height:1.12;margin:0;font-weight:650;letter-spacing:-.025em}p{margin:0}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:30px}

/* background */
#bg-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:.72}
.bg-glow{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(50% 45% at 78% 12%,rgba(139,92,246,.13),transparent 70%),radial-gradient(38% 34% at 8% 78%,rgba(112,85,234,.08),transparent 72%)}
.bg-star{position:fixed;inset:0;z-index:0;pointer-events:none;display:flex;align-items:center;justify-content:flex-end;padding-right:3vw;opacity:.18;animation:bgstar-spin 100s linear infinite,bgstar-pulse 6s ease-in-out infinite;transition:opacity .6s}
.bg-star svg{width:min(66vmin,610px);height:min(66vmin,610px);filter:drop-shadow(0 0 42px rgba(112,85,234,.32))}
body.has-webgl .bg-star{opacity:0}
header,main,footer{position:relative;z-index:1}
@keyframes bgstar-spin{to{transform:rotate(360deg)}}@keyframes bgstar-pulse{50%{opacity:.2}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-display);font-weight:600;font-size:.92rem;padding:10px 20px;border-radius:12px;border:1px solid var(--line-strong);transition:transform .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);white-space:nowrap}
.btn--lg{padding:14px 25px;font-size:1rem}.btn--primary{background:linear-gradient(135deg,var(--purple),var(--purple-2));border-color:transparent;color:#fff;box-shadow:0 14px 34px -14px rgba(112,85,234,.75)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px -15px rgba(112,85,234,.85)}
.btn--ghost{background:rgba(255,255,255,.7);color:var(--ink);backdrop-filter:blur(12px)}.btn--ghost:hover{background:#fff;border-color:rgba(112,85,234,.4);transform:translateY(-2px)}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;border-bottom:1px solid transparent;transition:background .3s,border-color .3s,box-shadow .3s,backdrop-filter .3s}
.nav--scrolled{background:rgba(255,255,255,.78);backdrop-filter:blur(18px) saturate(145%);border-bottom-color:var(--line);box-shadow:0 10px 40px -32px rgba(32,32,54,.45)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:76px}.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:1.16rem}
.brand__logo{width:38px;height:38px;border-radius:11px;box-shadow:0 10px 22px -10px rgba(112,85,234,.75)}
.nav__actions,.nav__links{display:flex;align-items:center}.nav__actions{gap:10px}.nav__links{gap:28px;margin-right:22px;color:var(--dim);font-size:.9rem}
.nav__links a{transition:color .2s}.nav__links a:hover{color:var(--purple)}
.nav__user{display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:9px 14px;border:1px solid rgba(32,173,131,.2);border-radius:12px;background:rgba(255,255,255,.72);color:var(--dim);font-size:.8rem;white-space:nowrap;backdrop-filter:blur(12px)}.nav__status-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(32,173,131,.1)}.nav__user strong{color:var(--ink);font-family:var(--font-display);font-size:.82rem;font-weight:600}
.nav__plugin-actions{display:flex;align-items:stretch;overflow:hidden;border:1px solid rgba(112,85,234,.25);border-radius:12px;background:rgba(255,255,255,.76);box-shadow:0 12px 28px -17px rgba(87,57,214,.55);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.nav__plugin-actions:hover{transform:translateY(-2px);border-color:rgba(112,85,234,.42);box-shadow:0 17px 34px -18px rgba(87,57,214,.65)}
.nav__plugin-actions .btn{min-height:42px;padding:9px 15px;border:0;border-radius:0;box-shadow:none;font-size:.84rem}
.nav__plugin-actions .btn:hover{transform:none;box-shadow:none}
.nav__plugin-actions svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.nav__plugin-guide{color:var(--purple-deep);background:linear-gradient(135deg,rgba(246,243,255,.98),rgba(236,231,255,.9))}
.nav__plugin-guide:hover{background:linear-gradient(135deg,#f1edff,#e6deff)}
.nav__plugin-download{position:relative;color:#fff;background:linear-gradient(135deg,var(--purple),var(--purple-2))}
.nav__plugin-download::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 20%,rgba(255,255,255,.22) 50%,transparent 80%);transform:translateX(-120%);transition:transform .5s var(--ease);pointer-events:none}
.nav__plugin-download:hover::before{transform:translateX(120%)}
.nav__plugin-guide+.nav__plugin-download{border-left:1px solid rgba(255,255,255,.38)}

/* hero */
.hero{position:relative;min-height:810px;display:flex;align-items:center;padding:135px 0 92px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:5% -20% auto 45%;height:78%;pointer-events:none;background:radial-gradient(circle at center,rgba(255,255,255,.75),transparent 68%)}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,.86fr) minmax(520px,1.14fr);gap:70px;align-items:center}
.hero__copy{max-width:610px}.hero__eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-display);font-size:.78rem;letter-spacing:.12em;color:var(--purple-deep);padding:7px 13px;border:1px solid rgba(112,85,234,.18);border-radius:999px;background:rgba(255,255,255,.72);margin-bottom:27px;box-shadow:0 8px 30px -24px rgba(112,85,234,.6)}
.hero__eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(32,173,131,.1)}
.hero__title{font-size:clamp(3rem,5.1vw,4.5rem);line-height:1.04;letter-spacing:-.055em;margin-bottom:25px}.grad{background:linear-gradient(115deg,var(--purple-deep),var(--purple-2) 55%,#f09c3e);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{max-width:565px;font-size:clamp(1.04rem,1.6vw,1.2rem);color:var(--dim);line-height:1.85;margin-bottom:33px}.hero__cta{display:flex;gap:12px;flex-wrap:wrap}
.hero__proof{display:flex;gap:0;margin-top:43px;padding-top:25px;border-top:1px solid var(--line)}.hero__proof li{display:flex;flex-direction:column;min-width:128px;padding-right:30px;margin-right:30px;border-right:1px solid var(--line)}.hero__proof li:last-child{border:0;margin:0;padding:0}.hero__proof strong{font:700 1.25rem var(--font-display);color:var(--ink)}.hero__proof span{font-size:.78rem;color:var(--mute)}
.hero__visual{position:relative;perspective:1600px}.hero-process{overflow:hidden;border:1px solid rgba(255,255,255,.75);border-radius:26px;background:#17182f;box-shadow:0 44px 100px -38px rgba(46,37,112,.5),0 0 0 9px rgba(255,255,255,.32);transform:rotateY(-6deg) rotateX(2deg)}
.hero-process img{width:100%;height:auto}
.hero__scroll{position:absolute;left:50%;bottom:21px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:7px;font-size:.65rem;letter-spacing:.18em;color:var(--mute);text-transform:uppercase}.hero__scroll span{width:1px;height:28px;background:linear-gradient(var(--purple),transparent);animation:scrolldot 1.8s var(--ease) infinite}@keyframes scrolldot{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* sections */
.section{padding:120px 0;position:relative}.section--alt{background:linear-gradient(180deg,rgba(255,255,255,.2),#fff 18%,#fff 82%,rgba(255,255,255,.2))}
.section__head{max-width:760px;margin:0 auto 61px;text-align:center}.section__kicker{font:700 .74rem var(--font-display);letter-spacing:.22em;color:var(--purple);text-transform:uppercase;margin-bottom:13px}.section__title{font-size:clamp(2.1rem,4.5vw,3.35rem);margin-bottom:17px}.section__desc{color:var(--dim);font-size:1.02rem}

/* AI capability comparison lab */
.section--capabilities{overflow:hidden;background:linear-gradient(180deg,#fff 0%,#f5f3ff 55%,#f7f8fc 100%)}.section--capabilities::before,.section--capabilities::after{content:"";position:absolute;border-radius:50%;pointer-events:none;filter:blur(10px)}.section--capabilities::before{width:560px;height:560px;left:-300px;top:80px;background:radial-gradient(circle,rgba(130,96,241,.14),transparent 68%)}.section--capabilities::after{width:520px;height:520px;right:-260px;bottom:-120px;background:radial-gradient(circle,rgba(246,162,69,.1),transparent 70%)}
.section--capabilities .section__head{position:relative;z-index:1}.ai-lab{position:relative;z-index:1;display:grid;grid-template-columns:275px minmax(0,1fr);gap:28px;padding:28px;border:1px solid rgba(112,85,234,.11);border-radius:28px;background:linear-gradient(135deg,rgba(255,248,244,.88),rgba(243,241,255,.94) 45%,rgba(237,247,255,.92));box-shadow:0 34px 90px -46px rgba(61,47,130,.38)}
.ai-tabs{display:flex;flex-direction:column;gap:13px;padding-top:84px}.ai-tab{display:grid;grid-template-columns:42px 1fr 24px;align-items:center;gap:10px;width:100%;min-height:68px;padding:12px 16px;text-align:left;border:1px solid rgba(42,42,70,.08);border-radius:15px;background:rgba(255,255,255,.76);color:var(--ink);box-shadow:0 10px 30px -27px rgba(43,36,91,.35);transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s,border-color .25s}.ai-tab:hover{transform:translateX(4px);border-color:rgba(112,85,234,.2)}.ai-tab span{font:500 1.45rem var(--font-display);color:#c8c8d1}.ai-tab b{font-size:.86rem;line-height:1.4}.ai-tab i{font-style:normal;font-size:1.15rem;color:#c3c2ce}.ai-tab.is-active{color:#fff;border-color:transparent;background:linear-gradient(120deg,#6b83f1,#9a70f5);box-shadow:0 18px 36px -20px rgba(112,85,234,.75);transform:translateX(6px)}.ai-tab.is-active span,.ai-tab.is-active i{color:rgba(255,255,255,.86)}.ai-tab:focus-visible{outline:3px solid rgba(112,85,234,.35);outline-offset:3px}
.ai-stage{min-width:0;border:1px solid rgba(255,255,255,.88);border-radius:22px;background:rgba(255,255,255,.86);box-shadow:0 26px 60px -42px rgba(42,35,92,.42);overflow:hidden}.ai-panel{padding:25px}.ai-panel[hidden]{display:none}.ai-panel__head{display:flex;align-items:flex-end;justify-content:space-between;gap:25px;margin-bottom:18px}.ai-panel__head>div>p{margin-bottom:6px;color:var(--purple);font:700 .64rem var(--font-display);letter-spacing:.17em}.ai-panel__head h3{font-size:1.48rem}.ai-panel__head>span{flex:0 0 auto;padding:7px 11px;border-radius:999px;background:#f0edff;color:#715be0;font-size:.7rem}
.ai-compare{position:relative;overflow:hidden;border-radius:17px;background:#ecebf3;box-shadow:inset 0 0 0 1px rgba(40,39,65,.08)}.ai-compare img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}.ai-compare figcaption{position:absolute;inset:15px 15px auto;display:flex;justify-content:space-between;pointer-events:none}.ai-compare figcaption span{padding:6px 11px;border-radius:8px;background:rgba(27,27,47,.72);color:#fff;font-size:.7rem;font-weight:600;backdrop-filter:blur(8px)}.ai-compare figcaption span:last-child{background:rgba(112,85,234,.88)}.ai-compare__arrow{position:absolute;left:50%;top:50%;display:grid;place-items:center;width:43px;height:43px;border:4px solid rgba(255,255,255,.82);border-radius:50%;background:linear-gradient(135deg,#7659eb,#bd79f1);box-shadow:0 13px 28px -12px rgba(65,43,159,.85);color:#fff;font-style:normal;font-size:1.1rem;transform:translate(-50%,-50%)}
.ai-copy-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin-top:15px}.ai-copy-compare>div{min-width:0;padding:13px 15px;border:1px solid var(--line);border-radius:13px;background:#fafafd}.ai-copy-compare>div:last-child{border-color:rgba(112,85,234,.17);background:#f5f2ff}.ai-copy-compare small{display:block;margin-bottom:3px;color:var(--mute);font-size:.66rem}.ai-copy-compare p{color:#4f5066;font-size:.78rem;line-height:1.55}.ai-copy-compare>div:last-child p{color:#5b46c9;font-weight:600}

/* workflow */
.steps{display:flex;align-items:stretch;gap:13px;justify-content:center}.step{flex:1;min-width:0;padding:29px 24px;border-radius:18px;background:rgba(255,255,255,.78);border:1px solid var(--line);text-align:left;box-shadow:0 17px 40px -34px rgba(39,35,85,.35)}.step__num{font:700 .75rem var(--font-display);letter-spacing:.1em;display:inline-grid;place-items:center;width:48px;height:32px;border-radius:10px;margin-bottom:24px;background:#efebff;color:var(--purple)}.step__title{font-size:1.13rem;margin-bottom:9px}.step__text{color:var(--dim);font-size:.86rem;line-height:1.75}.step__step-line{flex:0 0 27px;align-self:center;height:1px;background:linear-gradient(90deg,transparent,var(--purple),transparent);position:relative}.step__step-line::after{content:"";position:absolute;right:0;top:50%;width:6px;height:6px;border-right:1.5px solid var(--purple);border-top:1.5px solid var(--purple);transform:translateY(-50%) rotate(45deg)}

/* showcase */
#showcase{background:linear-gradient(180deg,var(--bg),#eeecfa 50%,var(--bg))}.showcase__overview{max-width:1160px;margin:0 auto;overflow:hidden;border:1px solid rgba(255,255,255,.8);border-radius:24px;background:#17182c;box-shadow:0 38px 90px -42px rgba(40,32,104,.55),0 0 0 8px rgba(255,255,255,.48)}.showcase__overview img{width:100%;height:auto}
.grid{display:grid;gap:20px}.grid--shots{grid-template-columns:repeat(2,1fr);max-width:1160px;margin:30px auto 0}.shot-card{overflow:hidden;border-radius:19px;background:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.8);box-shadow:0 22px 60px -40px rgba(41,35,94,.45);transition:transform .3s var(--ease),box-shadow .3s}.shot-card:hover{transform:translateY(-6px);box-shadow:0 28px 65px -35px rgba(41,35,94,.52)}.shot-card button{display:block;width:100%;overflow:hidden;background:#eef0f8}.shot-card img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;transition:transform .55s var(--ease)}.shot-card:hover img{transform:scale(1.025)}.shot-card figcaption{display:flex;align-items:center;gap:14px;padding:18px 20px}.shot-card figcaption>span{display:grid;place-items:center;width:39px;height:39px;border-radius:11px;background:#eeeaff;color:var(--purple);font:700 .73rem var(--font-display)}.shot-card figcaption div{display:flex;flex-direction:column}.shot-card figcaption b{font-size:.92rem}.shot-card figcaption small{color:var(--mute);font-size:.72rem}
.lightbox{max-width:min(94vw,1440px);max-height:94vh;padding:0;border:0;border-radius:19px;background:#17182c;color:#fff;box-shadow:0 30px 100px rgba(0,0,0,.45);overflow:hidden}.lightbox::backdrop{background:rgba(12,12,24,.76);backdrop-filter:blur(9px)}.lightbox img{max-width:92vw;max-height:82vh}.lightbox p{padding:13px 60px 16px;text-align:center;color:#b5b6c7;font-size:.83rem}.lightbox__close{position:absolute;right:13px;top:13px;z-index:2;width:38px;height:38px;border-radius:50%;background:rgba(20,20,38,.8);color:#fff;font-size:1.5rem;line-height:1}

/* CTA + footer */
.cta{padding:100px 0}.cta__inner{position:relative;overflow:hidden;text-align:center;padding:74px 32px;border-radius:28px;background:radial-gradient(70% 130% at 50% 0%,rgba(153,112,245,.24),transparent 58%),#191a30;border:1px solid rgba(255,255,255,.08);box-shadow:0 35px 90px -50px rgba(38,30,95,.65)}.cta__inner::after{content:"✦";position:absolute;right:5%;top:-35%;font:700 250px var(--font-display);color:rgba(255,255,255,.025);transform:rotate(15deg)}.cta__title{position:relative;z-index:1;color:#fff;font-size:clamp(2rem,4vw,3rem);margin-bottom:15px}.cta__desc{position:relative;z-index:1;color:#aeb0c4;font-size:1rem;margin-bottom:31px}.cta__btns{position:relative;z-index:1;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.cta .btn--ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#fff}.cta .section__kicker{position:relative;z-index:1;color:#b6a3ff}
.footer{padding:34px 0;border-top:1px solid var(--line);background:var(--bg)}.footer__inner{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;font-size:.8rem;color:var(--mute)}.footer__icp{transition:color .2s}.footer__icp:hover{color:var(--purple)}

/* reveal */
.js .reveal{opacity:0;transform:translateY(22px)}.reveal-fallback .reveal{opacity:1!important;transform:none!important}

/* responsive */
@media(max-width:1120px){
  .hero__inner{grid-template-columns:1fr 1fr;gap:35px}.hero__title{font-size:clamp(2.8rem,5.7vw,4.2rem)}
  .ai-lab{grid-template-columns:235px minmax(0,1fr);gap:20px;padding:22px}.ai-tab{padding-inline:13px}.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.step__step-line{display:none}
}
@media(max-width:860px){
  .container{padding-inline:22px}.nav__links{display:none}.hero{padding-top:125px;min-height:auto}.hero__inner{grid-template-columns:1fr;gap:70px}.hero__copy{max-width:680px}.hero__visual{max-width:720px}.hero-process{transform:none}.hero__scroll{display:none}
  .section{padding:92px 0}.ai-lab{grid-template-columns:1fr}.ai-tabs{flex-direction:row;overflow-x:auto;padding:0 0 6px;scrollbar-width:thin}.ai-tab{flex:0 0 218px}.ai-tab:hover,.ai-tab.is-active{transform:translateY(-3px)}.grid--shots{grid-template-columns:1fr}
}
@media(max-width:600px){
  .container{padding-inline:17px}.nav__inner{height:65px}.brand__name,.nav__contact,.nav__user-label,.nav__plugin-guide-label,.nav__plugin-download-suffix{display:none}.brand__logo{width:35px;height:35px}.nav__actions{gap:7px}.nav .btn{padding:9px 12px}.nav__login{font-size:.78rem}.nav__user{min-height:39px;padding:8px 9px;gap:7px}.nav__user strong{font-size:.72rem}.nav__plugin-actions .btn{min-height:39px;padding:8px 11px}.nav__plugin-actions .nav__plugin-guide{padding-inline:10px}.nav__plugin-download-label{font-size:.78rem}
  .hero{padding:105px 0 72px}.hero__title{font-size:clamp(2.55rem,12.6vw,3.65rem)}.hero__sub{font-size:1rem}.hero__proof{justify-content:space-between}.hero__proof li{min-width:0;margin-right:12px;padding-right:12px}
  .section{padding:76px 0}.section__head{margin-bottom:42px}.section__title{font-size:2.1rem}.ai-lab{padding:13px;border-radius:20px}.ai-tab{flex-basis:196px;min-height:61px}.ai-stage{border-radius:15px}.ai-panel{padding:14px}.ai-panel__head{align-items:flex-start;margin-bottom:13px}.ai-panel__head h3{font-size:1.08rem;line-height:1.4}.ai-panel__head>span{display:none}.ai-compare{border-radius:11px}.ai-compare figcaption{inset:9px 9px auto}.ai-compare figcaption span{padding:4px 7px;font-size:.6rem}.ai-compare__arrow{width:34px;height:34px;border-width:3px}.ai-copy-compare{grid-template-columns:1fr;gap:8px;margin-top:10px}.ai-copy-compare>div{padding:10px 12px}.steps{grid-template-columns:1fr}.step{padding:25px}
  .showcase__overview{border-radius:15px}.shot-card figcaption{padding:14px}.cta{padding:70px 0}.cta__inner{padding:54px 22px;border-radius:21px}.footer__sep{display:none}.footer__inner{flex-direction:column}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}.hero-process{transform:none}}