/* ============================================================
 * bite-web-zh.com.cn —— 浅色柔和渐变 + 产品界面风
 * 紫青渐变 / 悬浮胶囊导航 / 圆角卡片 / 应用界面模拟
 * ============================================================ */

:root{
  --bg:#f6f4ff;
  --bg-2:#fbfaff;
  --surface:#ffffff;
  --ink:#14122b;
  --ink-2:#4a4766;
  --muted:#8b87a8;
  --line:#e8e4f5;
  --line-2:#d9d3ee;
  --violet:#6d4aff;
  --cyan:#22c7e8;
  --pink:#ff7ac6;
  --green:#12b981;
  --amber:#f5a524;
  --grad:linear-gradient(120deg,#6d4aff,#22c7e8);
  --grad-soft:linear-gradient(120deg,rgba(109,74,255,.12),rgba(34,199,232,.12));
  --r:20px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(20,18,43,.04),0 8px 24px -16px rgba(76,60,160,.25);
  --shadow-2:0 30px 70px -34px rgba(76,60,160,.42);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Mono",Menlo,Consolas,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font:16px/1.7 var(--sans);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg{display:block;max-width:100%}
ul,ol{list-style:none}
::selection{background:rgba(109,74,255,.22)}

.wrap{width:min(1160px,calc(100% - 56px));margin:0 auto}
.wrap.narrow{width:min(820px,calc(100% - 56px))}
@media (max-width:640px){ .wrap,.wrap.narrow{width:calc(100% - 32px)} }

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:12px;font-size:14.5px;font-weight:600;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -12px rgba(109,74,255,.7)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 34px -14px rgba(109,74,255,.8)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line-2);box-shadow:var(--shadow-1)}
.btn-ghost:hover{border-color:var(--violet);color:var(--violet)}
.btn-soft{background:var(--ink);color:#fff;padding:9px 18px;border-radius:10px;font-size:13.5px}
.btn-soft:hover{background:var(--violet)}

/* ---------------- 悬浮胶囊导航 ---------------- */
.navwrap{position:fixed;top:16px;left:0;right:0;z-index:200;display:flex;justify-content:center;pointer-events:none}
.pill{pointer-events:auto;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.82);backdrop-filter:blur(18px) saturate(180%);
  border:1px solid rgba(255,255,255,.9);border-radius:999px;padding:7px 8px 7px 14px;
  box-shadow:0 18px 40px -22px rgba(76,60,160,.5),0 1px 0 rgba(255,255,255,.8) inset;
  max-width:calc(100% - 32px)}
.pill.scrolled{background:rgba(255,255,255,.95);box-shadow:0 20px 44px -24px rgba(76,60,160,.55)}
.brand{display:flex;align-items:center;gap:9px;flex:none;padding-right:6px}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;
  display:grid;place-items:center;box-shadow:0 6px 14px -6px rgba(109,74,255,.8)}
.brand-mark svg{width:17px;height:17px}
.brand b{font-size:15px;font-weight:800;letter-spacing:-.2px;white-space:nowrap}
.pill-links{display:flex;align-items:center;gap:2px}
.pill-links a{font-size:13.5px;color:var(--ink-2);padding:8px 12px;border-radius:999px;transition:.18s;white-space:nowrap}
.pill-links a:hover{background:rgba(109,74,255,.08);color:var(--violet)}
.pill-links a.is-on{color:var(--violet);font-weight:600;background:rgba(109,74,255,.1)}
.pill-cta{display:flex;align-items:center;gap:6px;flex:none}
.burger{display:none;width:36px;height:34px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger i{width:15px;height:1.6px;background:var(--ink);border-radius:2px;transition:.2s}
.burger.is-open i:first-child{transform:translateY(3.3px) rotate(45deg)}
.burger.is-open i:last-child{transform:translateY(-3.3px) rotate(-45deg)}
.msheet{display:none;position:fixed;top:76px;left:16px;right:16px;z-index:190;
  background:#fff;border-radius:18px;padding:14px;box-shadow:var(--shadow-2);border:1px solid var(--line)}
.msheet.is-open{display:block}
.msheet nav{display:flex;flex-direction:column}
.msheet nav a{padding:12px 10px;border-radius:10px;font-size:15px;color:var(--ink-2)}
.msheet nav a:hover{background:var(--bg)}
.msheet .btn{width:100%;margin-top:8px}

/* ---------------- 首屏 ---------------- */
.hero{position:relative;padding:132px 0 40px;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}
.b1{width:520px;height:520px;left:-120px;top:-160px;background:radial-gradient(circle,rgba(109,74,255,.5),transparent 70%)}
.b2{width:480px;height:480px;right:-140px;top:-60px;background:radial-gradient(circle,rgba(34,199,232,.42),transparent 70%)}
.b3{width:600px;height:420px;left:50%;top:340px;transform:translateX(-50%);background:radial-gradient(circle,rgba(255,122,198,.22),transparent 70%)}
.hero-in{position:relative;z-index:1;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px 7px 10px;border-radius:999px;
  background:rgba(255,255,255,.9);border:1px solid var(--line);box-shadow:var(--shadow-1);
  font-size:12.5px;color:var(--ink-2);margin-bottom:24px}
.hero-badge svg{width:16px;height:16px;color:var(--violet)}
.hero h1{font-size:clamp(38px,5.6vw,64px);line-height:1.08;letter-spacing:-.04em;font-weight:800}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:20px auto 30px;font-size:16.5px;line-height:1.75;color:var(--ink-2);max-width:660px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-mock{position:relative;margin-top:54px}

/* 浮动标签 */
.fchip{position:absolute;z-index:3;background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 15px;font-size:12px;font-weight:600;color:var(--ink-2);box-shadow:0 16px 34px -18px rgba(76,60,160,.5);
  white-space:nowrap}
.fchip::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--grad);margin-right:8px;vertical-align:1px}
.fchip-a{left:-36px;top:96px}
.fchip-b{right:-30px;bottom:-14px;top:auto}

/* ---------------- 应用界面 ---------------- */
.app{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;
  box-shadow:var(--shadow-2);max-width:1000px;margin:0 auto;text-align:left}
.app-bar{display:flex;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line);background:#fbfaff}
.dots{display:flex;gap:6px}
.dots i{width:9px;height:9px;border-radius:50%;background:#e2ddf2}
.dots i:first-child{background:#ff9d9d}
.dots i:nth-child(2){background:#ffd48a}
.dots i:nth-child(3){background:#a8e6a1}
.app-title{font-size:12px;color:var(--muted);font-family:var(--mono)}
.app-live{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:var(--green);font-weight:600}
.app-live i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(18,185,129,.15)}
.app-body{display:grid;grid-template-columns:186px minmax(0,1fr)}
.app-side{border-right:1px solid var(--line);padding:14px 10px;background:#fcfbff;display:flex;flex-direction:column;gap:2px}
.app-side span{font-size:12.5px;color:var(--muted);padding:9px 12px;border-radius:9px}
.app-side span.on{background:rgba(109,74,255,.1);color:var(--violet);font-weight:600}
.app-main{padding:16px 18px 20px;min-width:0}
.app-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.app-chip{font-size:11.5px;color:var(--ink-2);background:#f5f3fd;border-radius:999px;padding:5px 11px}
.app-chip.on{background:var(--ink);color:#fff}
.app-add{margin-left:auto;font-size:11.5px;font-weight:700;color:var(--violet);
  border:1px dashed var(--line-2);border-radius:999px;padding:5px 12px}
.env-row{display:grid;grid-template-columns:10px minmax(0,1.4fr) minmax(0,1.3fr) minmax(0,1fr) 70px;
  gap:12px;align-items:center;padding:11px 4px;border-bottom:1px solid var(--line);font-size:12.5px}
.env-row:last-child{border-bottom:0}
.env-dot{width:8px;height:8px;border-radius:50%;background:var(--c,#6d4aff)}
.env-row b{font-weight:700;font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.env-os,.env-ip{color:var(--muted);font-size:11.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.env-st{font-size:11px;color:var(--muted);text-align:right}
.env-st.ok{color:var(--green);font-weight:600}

/* ---------------- 指标 ---------------- */
.metrics{padding:40px 0 10px}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-1)}
.metric b{display:block;font-size:30px;font-weight:800;letter-spacing:-1.4px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric b i{font-style:normal;font-size:14px;color:var(--muted);-webkit-text-fill-color:var(--muted);margin-left:2px}
.metric span{display:block;margin-top:2px;font-size:12px;color:var(--muted)}

/* ---------------- 区块 ---------------- */
.sec{padding:84px 0}
.sec-tint{background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(246,244,255,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-tight{padding:42px 0 72px}
.sec-head{margin-bottom:42px;max-width:640px}
.sec-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.tag{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:2px;text-transform:uppercase;
  color:var(--violet);background:rgba(109,74,255,.09);border-radius:999px;padding:4px 11px;margin-bottom:14px}
.sec-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.18;letter-spacing:-.035em;font-weight:800}
.sec-head h2 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:15px}
.sec-more{margin-top:34px;text-align:center}

/* ---------------- 卡片网格 ---------------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow-1);transition:.25s}
.card:hover{transform:translateY(-3px);box-shadow:0 24px 50px -28px rgba(76,60,160,.4);border-color:var(--line-2)}
.ico{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--grad-soft);
  color:var(--violet);margin-bottom:16px;border:1px solid rgba(109,74,255,.14)}
.ico.sm{width:40px;height:40px;border-radius:11px}
.card h3{font-size:16.5px;font-weight:700;letter-spacing:-.2px;margin-bottom:8px}
.card p{font-size:13.5px;line-height:1.75;color:var(--ink-2)}
.scenario{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;transition:.25s}
.scenario:hover{box-shadow:0 20px 40px -26px rgba(76,60,160,.4)}
.scenario h3{font-size:15.5px;font-weight:700;margin:12px 0 6px}
.scenario p{font-size:13px;line-height:1.7;color:var(--ink-2)}

/* ---------------- 产品演示 ---------------- */
.showcase{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-2);overflow:hidden}
.tabs{display:flex;gap:4px;padding:14px 14px 0;border-bottom:1px solid var(--line);background:#fcfbff}
.tab{font-size:13.5px;color:var(--muted);padding:10px 16px;border-radius:10px 10px 0 0;transition:.18s;position:relative}
.tab:hover{color:var(--ink-2)}
.tab.is-on{color:var(--violet);font-weight:700;background:#fff;box-shadow:0 -1px 0 var(--line),1px 0 0 var(--line),-1px 0 0 var(--line)}
.panels{padding:26px 28px 30px}
.panel{display:none}
.panel.is-on{display:block}
.panel-head{margin-bottom:18px}
.panel-head h3{font-size:18px;font-weight:800;letter-spacing:-.3px}
.panel-head p{font-size:13px;color:var(--muted);margin-top:4px}
.mini-table,.px-list{display:flex;flex-direction:column}
.mini-row{display:grid;grid-template-columns:8px minmax(0,1fr) minmax(0,1fr) 70px;gap:12px;align-items:center;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.mini-row i{width:8px;height:8px;border-radius:50%;background:var(--c,#6d4aff)}
.mini-row b{font-weight:600}
.mini-row span{color:var(--muted);font-size:12.5px}
.mini-row em{font-style:normal;font-size:11.5px;color:var(--muted);text-align:right}
.mini-row em.ok{color:var(--green);font-weight:600}
.fp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.fp-item{background:#faf9ff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.fp-item span{display:block;font-family:var(--mono);font-size:11.5px;color:var(--ink-2)}
.fp-item i{font-style:normal;font-size:10.5px;color:var(--green);font-weight:600}
.px-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr) 70px;gap:12px;align-items:center;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.px-row b{font-weight:600}
.px-row span{font-family:var(--mono);font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}
.px-row em{font-style:normal;font-size:11.5px;color:var(--muted);text-align:right}
.px-row em.ok{color:var(--green);font-weight:600}

/* ---------------- 指纹清单 ---------------- */
.fp-list{display:grid;grid-template-columns:1fr 1fr;gap:0 44px;border-top:1px solid var(--line)}
.fp-list.wide{max-width:none}
.fp-row{padding:18px 0;border-bottom:1px solid var(--line)}
.fp-row b{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:1px;color:var(--violet);margin-bottom:6px}
.fp-row p{font-size:13.5px;line-height:1.7;color:var(--ink-2)}

/* ---------------- 步骤 ---------------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow-1)}
.step-n{font-family:var(--mono);font-size:12px;font-weight:700;color:#fff;background:var(--grad);
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px}
.step h3{font-size:16px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;line-height:1.7;color:var(--ink-2)}

/* ---------------- 定价 ---------------- */
.plans{align-items:stretch}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;
  display:flex;flex-direction:column;box-shadow:var(--shadow-1)}
.plan.is-hot{border:1.5px solid var(--violet);box-shadow:0 30px 60px -32px rgba(109,74,255,.55);transform:translateY(-4px)}
.plan-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;
  font-size:11px;font-weight:700;padding:4px 14px;border-radius:999px;box-shadow:0 8px 18px -8px rgba(109,74,255,.8)}
.plan h3{font-size:17px;font-weight:700}
.plan-price{display:flex;align-items:baseline;gap:3px;margin:10px 0 4px}
.plan-price b{font-size:38px;font-weight:800;letter-spacing:-1.8px;line-height:1}
.plan-price i{font-style:normal;font-size:12.5px;color:var(--muted)}
.plan-note{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.plan ul{flex:1;display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.plan li{display:flex;gap:9px;font-size:13.5px;color:var(--ink-2);align-items:flex-start}
.tick{width:16px;height:16px;color:var(--green);flex:none;margin-top:2px}
.plan .btn{width:100%}
.fine{margin-top:22px;text-align:center;font-size:12px;color:var(--muted)}

/* ---------------- FAQ ---------------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.faq[open]{border-color:var(--line-2);box-shadow:var(--shadow-1)}
.faq summary{display:flex;align-items:center;gap:14px;padding:18px 22px;font-size:15px;font-weight:600;
  cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq-x{position:relative;width:14px;height:14px;margin-left:auto;flex:none}
.faq-x::before,.faq-x::after{content:"";position:absolute;background:var(--muted);border-radius:2px}
.faq-x::before{left:0;right:0;top:6px;height:1.7px}
.faq-x::after{top:0;bottom:0;left:6px;width:1.7px;transition:.2s}
.faq[open] .faq-x::after{transform:scaleY(0)}
.faq[open] summary{color:var(--violet)}
.faq-a{padding:0 22px 20px}
.faq-a p{font-size:14px;line-height:1.85;color:var(--ink-2)}

/* ---------------- 资讯卡 ---------------- */
.ncard{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;transition:.25s}
.ncard:hover{transform:translateY(-3px);box-shadow:0 26px 50px -30px rgba(76,60,160,.45);border-color:var(--line-2)}
.ncard-thumb{background:#faf9ff;overflow:hidden}
.ncard-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.ncard-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.ncard-meta{display:flex;gap:12px;font-size:11.5px;color:var(--muted)}
.ncard-meta span:first-child{color:var(--violet);font-weight:600}
.ncard h3{font-size:15.5px;line-height:1.5;font-weight:700;margin:8px 0 6px}
.ncard p{font-size:13px;line-height:1.65;color:var(--ink-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard-more{margin-top:14px;font-size:12px;color:var(--violet);font-weight:600}

/* ---------------- CTA ---------------- */
.cta{padding:20px 0 90px}
.cta-in{position:relative;overflow:hidden;background:var(--grad);border-radius:28px;padding:64px 40px;text-align:center;
  box-shadow:0 40px 80px -40px rgba(109,74,255,.7)}
.cta-in::after{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 20% 10%,rgba(255,255,255,.35),transparent 45%),
            radial-gradient(circle at 85% 90%,rgba(255,255,255,.22),transparent 45%)}
.cta-in>*{position:relative;z-index:1}
.cta h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;letter-spacing:-.03em;font-weight:800;color:#fff}
.cta p{margin-top:12px;color:rgba(255,255,255,.86);font-size:15px}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.cta .btn-primary{background:#fff;color:var(--violet);box-shadow:0 14px 30px -14px rgba(0,0,0,.35)}
.cta .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff;box-shadow:none}
.cta .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff}
.cta-note{margin-top:22px;font-size:11.5px;color:rgba(255,255,255,.7)}

/* ---------------- 页脚 ---------------- */
.foot{border-top:1px solid var(--line);padding:56px 0 26px;background:#fff}
.foot-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px}
.f-brand .brand{padding:0}
.f-brand p{margin-top:14px;font-size:12.5px;line-height:1.8;color:var(--ink-2);max-width:340px}
.f-brand .f-note{color:var(--muted);font-size:11.5px;margin-top:10px}
.f-col h4{font-size:11px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-family:var(--mono)}
.f-col a{display:block;font-size:13px;color:var(--ink-2);padding:5px 0;transition:.15s}
.f-col a:hover{color:var(--violet)}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:20px;
  border-top:1px solid var(--line);font-size:11.5px;color:var(--muted)}

/* ---------------- 内页头 ---------------- */
.phead{padding:128px 0 40px}
.phead h1{font-size:clamp(30px,4.2vw,50px);line-height:1.12;letter-spacing:-.04em;font-weight:800}
.phead h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.phead-lead{margin-top:16px;font-size:15.5px;line-height:1.75;color:var(--ink-2);max-width:660px}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--violet)}
.crumb i{font-style:normal;color:var(--line-2)}

/* ---------------- 通用内容 ---------------- */
.prose-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 28px;margin-bottom:14px;
  box-shadow:var(--shadow-1)}
.prose-item h2{font-size:19px;font-weight:800;letter-spacing:-.3px;margin-bottom:10px}
.prose-item p{font-size:14.5px;line-height:1.85;color:var(--ink-2);margin-bottom:10px}
.prose-item p:last-child{margin-bottom:0}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.contact>div{background:#faf9ff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.contact span{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.contact b{font-size:13.5px}
.muted{font-size:12px;color:var(--muted);margin-top:16px}
.callout{display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 28px;box-shadow:var(--shadow-1)}
.callout h3{font-size:17px;font-weight:800;margin-bottom:5px}
.callout p{font-size:13px;color:var(--ink-2)}

/* 代码卡 */
.code-card{background:#15132a;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-2);max-width:840px;margin:0 auto}
.code-head{display:flex;align-items:center;gap:12px;padding:12px 18px;border-bottom:1px solid rgba(255,255,255,.08);
  color:#9d9ab8;font-family:var(--mono);font-size:11.5px}
.code-card pre{padding:22px;overflow:auto}
.code-card code{font-family:var(--mono);font-size:12.5px;line-height:1.9;color:#d8d4ef;white-space:pre}
.code-card .s{color:#8ce99a}

/* 下载卡 */
.dl-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column}
.dl-head{display:flex;align-items:center;justify-content:space-between;color:var(--violet);margin-bottom:14px}
.dl-head span{font-family:var(--mono);font-size:11px;color:var(--muted);background:#f5f3fd;border-radius:999px;padding:4px 10px}
.dl-card h3{font-size:19px;font-weight:800}
.dl-size{font-size:12.5px;color:var(--muted);margin:4px 0 16px}
.dl-card ul{flex:1;display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.dl-card li{display:flex;gap:8px;font-size:13.5px;color:var(--ink-2);align-items:flex-start}
.dl-actions{display:flex;gap:10px;flex-wrap:wrap}

/* 筛选 */
.filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:12.5px;color:var(--ink-2);transition:.18s}
.chip:hover{border-color:var(--line-2)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff}
.empty{display:none;padding:40px 0;text-align:center;color:var(--muted);font-size:13px}
.empty.show{display:block}

/* ---------------- 文章 ---------------- */
.ahead{padding:126px 0 28px}
.ahead-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:12px}
.ahead-meta span:first-child{color:var(--violet);font-weight:600}
.ahead h1{font-size:clamp(28px,3.8vw,44px);line-height:1.16;letter-spacing:-.035em;font-weight:800;max-width:820px}
.ahead-lead{margin-top:14px;font-size:15.5px;line-height:1.75;color:var(--ink-2);max-width:720px}
.article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 38px;box-shadow:var(--shadow-1)}
.article h2{font-size:21px;font-weight:800;letter-spacing:-.3px;margin:30px 0 12px}
.article h2:first-child{margin-top:0}
.article p{font-size:15px;line-height:1.9;color:#26243c;margin-bottom:14px}
.a-note{margin:28px 0;padding:18px 20px;border-radius:14px;background:#faf9ff;border:1px solid var(--line)}
.a-note b{display:block;font-size:11px;letter-spacing:1.4px;text-transform:uppercase;color:var(--violet);margin-bottom:6px}
.a-note p{margin:0;font-size:13px;color:var(--ink-2)}
.a-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:26px;padding-top:20px;
  border-top:1px solid var(--line);font-size:13px}
.a-foot a{color:var(--ink-2)}
.a-foot a:hover{color:var(--violet)}
.a-foot .next{color:var(--violet);text-align:right;max-width:52%}

/* ---------------- 站点地图 / 404 ---------------- */
.map{margin-bottom:26px}
.map h2{font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);
  font-family:var(--mono);margin-bottom:12px}
.map-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.map-grid a{display:flex;justify-content:space-between;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 16px;font-size:13.5px;transition:.18s}
.map-grid a i{font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--muted)}
.map-grid a:hover{border-color:var(--violet);color:var(--violet);transform:translateX(2px)}
.e404{padding:150px 0 120px;text-align:center}
.e404 h1{font-size:clamp(28px,4vw,44px);letter-spacing:-.03em;font-weight:800;margin:14px 0 10px}
.e404 p{color:var(--ink-2);margin-bottom:26px}
.e404-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------------- 入场 ---------------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* 锚点滚动时避开固定导航 */
.sec,.phead,.ahead,.showcase{scroll-margin-top:104px}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .pill-links{display:none}
  .burger{display:flex}
  .pill{padding:7px 8px 7px 12px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fp-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .hero{padding-top:112px}
  .app-body{grid-template-columns:1fr}
  .app-side{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px}
  .app-side span{white-space:nowrap}
  .env-row{grid-template-columns:10px minmax(0,1fr) minmax(0,1fr) 64px}
  .env-os{display:none}
  .fchip{display:none}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .fp-list{grid-template-columns:1fr}
  .article{padding:26px 22px}
}
@media (max-width:760px){
  .sec{padding:60px 0}
  .grid-3,.grid-2{grid-template-columns:minmax(0,1fr)}
  .plan.is-hot{transform:none}
  .cta-in{padding:44px 22px;border-radius:22px}
  .foot-grid{grid-template-columns:1fr}
  .map-grid{grid-template-columns:minmax(0,1fr)}
  .a-foot .next{max-width:100%;text-align:left}
}
@media (max-width:560px){
  .hero h1{font-size:clamp(30px,8.6vw,40px)}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .mini-row{grid-template-columns:8px minmax(0,1fr) 64px}
  .mini-row span{display:none}
  .px-row{grid-template-columns:minmax(0,1fr) 64px}
  .px-row span{display:none}
  .app-main{padding:14px}
  .brand b{font-size:14px}
  .contact{grid-template-columns:1fr}
  .article{padding:22px 18px}
}