/* 轻水印云 · 企业官网 */
:root{
  --ink:#0d1220; --ink2:#3f4a60; --mut:#7b869b; --line:#e9ebf3; --bg:#ffffff;
  --pri:#5b5bd6; --pri2:#8b5cf6; --grad:linear-gradient(135deg,#5b5bd6 0%,#7c5cf0 50%,#a855f7 100%);
  --soft:#f5f6fc; --soft2:#eef0ff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.75;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 顶部导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(16px);border-bottom:1px solid rgba(233,235,243,.8)}
.nav-in{max-width:1180px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:10px;font-weight:750;font-size:18px;letter-spacing:-.4px;white-space:nowrap}
.logo .mark{width:34px;height:34px;border-radius:11px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(99,102,241,.3)}
.nav-links{display:flex;gap:26px;font-size:14px;color:var(--ink2);font-weight:500}
.nav-links a:hover{color:var(--pri)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--ink2);transition:.18s}
.btn:hover{border-color:#c9c8f5;color:var(--pri);transform:translateY(-1px)}
.btn.pri{background:var(--grad);border:none;color:#fff;box-shadow:0 6px 18px rgba(99,102,241,.26)}
.btn.pri:hover{color:#fff;box-shadow:0 9px 24px rgba(99,102,241,.36)}
.btn.lg{padding:13px 26px;font-size:15px;border-radius:12px}
.btn.sm{padding:6px 13px;font-size:13px}
.menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--ink2)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:88px 0 78px;background:radial-gradient(900px 480px at 12% -10%,#e9e9ff 0%,transparent 62%),radial-gradient(800px 480px at 88% 8%,#f6e9ff 0%,transparent 60%),linear-gradient(180deg,#fbfbff 0%,#fff 100%)}
.hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(#c9cbe6 1px,transparent 1px);background-size:26px 26px;opacity:.28;mask-image:linear-gradient(180deg,#000,transparent 70%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid #e2e2fa;border-radius:30px;padding:6px 14px;font-size:12.5px;color:var(--pri);font-weight:600;box-shadow:0 3px 12px rgba(99,102,241,.07)}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px #dcfce7}
.hero h1{font-size:50px;line-height:1.2;letter-spacing:-2px;margin:22px 0 18px;font-weight:800}
.hero p.lead{font-size:17px;color:var(--ink2);line-height:1.85;margin:0 0 30px;max-width:520px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-metrics{display:flex;gap:36px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.hero-metrics .n{font-size:26px;font-weight:750;letter-spacing:-1px;line-height:1.2}
.hero-metrics .l{font-size:12.5px;color:var(--mut);margin-top:2px}

/* 演示终端 */
.terminal{background:#111629;border-radius:18px;box-shadow:0 30px 70px rgba(24,28,60,.22);overflow:hidden;border:1px solid #242a45;transform:rotate(.4deg)}
.terminal .bar{height:42px;background:#191e35;display:flex;align-items:center;gap:7px;padding:0 16px;border-bottom:1px solid #242a45}
.terminal .dot{width:10px;height:10px;border-radius:50%}
.terminal .bar span{margin-left:10px;color:#78819e;font-size:12px;font-family:monospace}
.terminal pre{margin:0;padding:20px 22px;color:#cbd5e1;font-size:12.5px;line-height:1.85;font-family:"SFMono-Regular",Consolas,monospace;overflow-x:auto}
.terminal .key{color:#c4b5fd}.terminal .str{color:#86efac}.terminal .num{color:#fca5a5}.terminal .cm{color:#64748b}
.terminal .result{margin:0 20px 20px;background:#0b0f1e;border:1px solid #242a45;border-radius:10px;padding:14px 16px;font-size:12px;color:#8be9b0;font-family:monospace}
.float-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:13px;padding:12px 16px;box-shadow:0 14px 34px rgba(24,28,60,.13);font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:9px}
.float-card.a{left:-26px;bottom:42px}.float-card.b{right:-18px;top:34px}
.float-card em{font-style:normal;width:24px;height:24px;border-radius:7px;background:var(--soft2);display:grid;place-items:center}

/* 通用 section */
section{padding:84px 0}
section.soft{background:var(--soft)}
.sec-hd{text-align:center;max-width:640px;margin:0 auto 48px}
.sec-hd .kicker{font-size:12.5px;color:var(--pri);font-weight:700;letter-spacing:1.6px;text-transform:uppercase}
.sec-hd h2{font-size:34px;letter-spacing:-1.2px;line-height:1.3;margin:10px 0 12px;font-weight:780}
.sec-hd p{color:var(--ink2);font-size:15.5px;margin:0}
.cards{display:grid;gap:18px}
.c3{grid-template-columns:repeat(3,1fr)}
.c4{grid-template-columns:repeat(4,1fr)}
.feature{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;transition:.2s}
.feature:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(24,28,60,.08);border-color:#dcdcf7}
.feature .ico{width:46px;height:46px;border-radius:13px;background:var(--soft2);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.feature h3{font-size:16.5px;margin:0 0 8px;font-weight:700}
.feature p{margin:0;color:var(--ink2);font-size:13.5px;line-height:1.8}

/* 平台墙 */
.platforms{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px}
.pf{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 10px;text-align:center;transition:.18s}
.pf:hover{border-color:var(--pri);transform:translateY(-2px);box-shadow:0 8px 20px rgba(99,102,241,.1)}
.pf .em{font-size:22px;display:block;line-height:1.3}
.pf .nm{font-size:12.5px;font-weight:600;margin-top:5px}
.pf .cat{font-size:10.5px;color:var(--mut);margin-top:1px}
.more-hint{text-align:center;margin-top:22px;color:var(--mut);font-size:13px}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;position:relative;display:flex;flex-direction:column;transition:.2s}
.price:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(24,28,60,.09)}
.price.hot{border:2px solid var(--pri);box-shadow:0 18px 44px rgba(99,102,241,.13)}
.price .tag{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:11.5px;font-weight:700;padding:4px 16px;border-radius:20px;white-space:nowrap}
.price h3{font-size:18px;margin:0 0 4px;font-weight:750}
.price .desc{font-size:12.5px;color:var(--mut);min-height:20px}
.price .num{font-size:38px;font-weight:800;letter-spacing:-1.5px;margin:18px 0 0;line-height:1.1}
.price .num small{font-size:14px;font-weight:500;color:var(--mut)}
.price .old{font-size:12.5px;color:var(--mut);text-decoration:line-through;margin-left:8px}
.price ul{list-style:none;padding:0;margin:20px 0 24px;flex:1;font-size:13.5px;color:var(--ink2)}
.price li{padding:6px 0;display:flex;gap:9px;align-items:flex-start}
.price li::before{content:'✓';color:var(--pri);font-weight:800}
.price .btn{width:100%}

/* 接入流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.step{position:relative;padding:24px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}
.step .no{width:32px;height:32px;border-radius:10px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;margin-bottom:14px}
.step h4{margin:0 0 6px;font-size:15px}
.step p{margin:0;font-size:13px;color:var(--ink2);line-height:1.75}

/* API 文档 */
.api-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.codebox{background:#111629;border-radius:16px;overflow:hidden;border:1px solid #242a45}
.codebox .hd{height:40px;background:#191e35;border-bottom:1px solid #242a45;display:flex;align-items:center;padding:0 16px;color:#8b95b4;font-size:12px;font-family:monospace;gap:8px}
.codebox .hd .g{width:7px;height:7px;border-radius:50%;background:#22c55e}
.codebox pre{margin:0;padding:18px 20px;color:#cbd5e1;font-size:12.5px;line-height:1.85;overflow-x:auto;font-family:"SFMono-Regular",Consolas,monospace}
.codebox .k{color:#c4b5fd}.codebox .s{color:#86efac}.codebox .c{color:#64748b}.codebox .n{color:#fca5a5}
.api-list .item{border-bottom:1px solid var(--line);padding:13px 0;display:flex;gap:12px;align-items:flex-start}
.api-list .item:last-child{border:none}
.api-list .m{font-size:11px;font-weight:700;padding:2px 8px;border-radius:6px;background:var(--soft2);color:var(--pri);font-family:monospace;flex:0 0 auto}
.api-list .t{font-size:14px;font-weight:600}
.api-list .d{font-size:12.5px;color:var(--mut)}

/* FAQ / CTA */
.faq{max-width:780px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:650;cursor:pointer;font-size:15px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';float:right;color:var(--pri);font-size:19px;line-height:1}
.faq details[open] summary::after{content:'−'}
.faq p{margin:12px 0 0;color:var(--ink2);font-size:14px;line-height:1.85}
.cta{background:linear-gradient(125deg,#4f46e5 0%,#7c3aed 52%,#a855f7 100%);color:#fff;border-radius:24px;padding:56px 44px;text-align:center;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;width:380px;height:380px;border-radius:50%;background:rgba(255,255,255,.08);top:-200px;right:-90px}
.cta::after{content:'';position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.06);bottom:-170px;left:-60px}
.cta h2{font-size:34px;margin:0 0 12px;letter-spacing:-1px;position:relative}
.cta p{opacity:.9;margin:0 0 28px;position:relative}
.cta .btn{position:relative;background:#fff;color:var(--pri);border:none;font-weight:700}
.cta .btn.ghost-line{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;margin-left:10px}

/* 在线体验 */
.try-box{display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:start}
.try-in{display:flex;gap:10px}
.try-in input{flex:1;padding:13px 15px;border:1px solid var(--line);border-radius:11px;outline:none;font-size:14px;background:#fff}
.try-in input:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(99,102,241,.11)}
.try-out{margin-top:16px;min-height:90px;background:#0f172a;color:#a7f3d0;border-radius:12px;padding:16px;font-family:monospace;font-size:12.5px;white-space:pre-wrap;word-break:break-all;max-height:280px;overflow:auto}
.notice-line{background:var(--soft2);border:1px solid #dcdcf7;border-radius:11px;padding:12px 15px;font-size:13px;color:var(--ink2);margin-bottom:16px}

/* 页脚 */
footer{background:#0e1322;color:#9aa5bd;padding:56px 0 26px;font-size:13px}
.foot-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:36px;padding-bottom:36px}
footer h4{color:#fff;font-size:14px;margin:0 0 14px}
footer a{display:block;padding:4px 0;color:#9aa5bd}
footer a:hover{color:#fff}
footer .brandline{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:12px}
footer p{line-height:1.85;margin:0;max-width:320px}
.foot-bottom{border-top:1px solid #202738;padding-top:20px;display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap;font-size:12px;color:#6d7790}
.terms{background:rgba(255,255,255,.03);border:1px solid #202738;border-radius:10px;padding:12px 14px;margin-bottom:28px;font-size:12px;line-height:1.8;color:#7e89a3}

/* 弹窗 */
.mask{position:fixed;inset:0;background:rgba(13,18,32,.5);backdrop-filter:blur(4px);z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:#fff;border-radius:18px;width:100%;max-width:410px;padding:30px;box-shadow:0 24px 70px rgba(0,0,0,.22)}
.modal h3{margin:0 0 4px;font-size:20px}
.modal .sub{color:var(--mut);font-size:13px;margin-bottom:22px}
.modal label{display:block;font-size:12.5px;font-weight:600;margin:12px 0 6px}
.modal input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;outline:none}
.modal input:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(99,102,241,.11)}
.modal .btn{width:100%;margin-top:18px}
.modal .switch{text-align:center;font-size:13px;color:var(--mut);margin-top:16px}
.modal .switch b{color:var(--pri);cursor:pointer}
.modal .x{float:right;cursor:pointer;color:var(--mut);font-size:22px;line-height:1;background:none;border:none}
#toast,#toastBox{position:fixed;top:22px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
#toast,.toast{background:#111827;color:#fff;padding:11px 20px;border-radius:10px;font-size:13.5px;box-shadow:0 12px 30px rgba(0,0,0,.2)}
.toast.ok{background:#15803d}.toast.err{background:#c53030}.toast.warn{background:#b45309}

@media(max-width:960px){
  .hero-in,.try-box,.api-grid{grid-template-columns:1fr;gap:34px}
  .hero{padding:60px 0 56px}.hero h1{font-size:38px}
  .c3,.c4,.price-grid,.steps,.foot-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}.menu-btn{display:block}.nav-right .btn:first-child{display:none}
  .float-card{display:none}
  section{padding:60px 0}
  .sec-hd h2{font-size:28px}
}
@media(max-width:600px){
  .c3,.c4,.price-grid,.steps,.foot-grid{grid-template-columns:1fr}
  .hero h1{font-size:31px;letter-spacing:-1px}
  .hero-metrics{gap:20px;flex-wrap:wrap}
  .container,.nav-in{padding:0 16px}
  .cta{padding:38px 22px}.cta h2{font-size:26px}
}