/* ================= SpiderBrowser 官网主样式 =================
   清爽大气路线：浅色内容区 + 深色全屏轮播，1600px 容器
   主色 #0ea5e9 → #22d3ee（青蓝渐变）
   ============================================================ */
:root{
  --ink:#0b1623;
  --ink-2:#31445a;
  --muted:#63788e;
  --line:#e4ecf5;
  --line-2:#d6e2ee;
  --bg:#ffffff;
  --soft:#f5f9fd;
  --soft-2:#eef6fc;
  --accent:#0ea5e9;
  --accent-2:#22d3ee;
  --dark:#081420;
  --radius:16px;
  --shadow:0 18px 46px rgba(16,50,80,.10);
  --shadow-sm:0 6px 20px rgba(16,50,80,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC",
       "Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
.wrap{max-width:1600px;margin:0 auto;padding:0 56px}
@media(max-width:1200px){.wrap{padding:0 28px}}

/* ---------------- 顶部导航 ---------------- */
.site-head{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s,background .25s;
}
.site-head.solid{border-color:var(--line);box-shadow:0 6px 24px rgba(16,50,80,.05)}
.head-inner{display:flex;align-items:center;gap:44px;height:82px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;
  background:linear-gradient(150deg,#eef9ff,#dff3ff);border:1px solid #d8ecfa}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:19px;letter-spacing:.2px}
.brand-text i{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.4px}
.nav{display:flex;gap:32px;flex:1}
.nav a{font-size:15px;color:var(--ink-2);position:relative;padding:6px 0;transition:color .2s}
.nav a:hover{color:var(--accent)}
.nav a.on{color:var(--ink);font-weight:600}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;
  border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.head-act{display:flex;gap:12px;flex:0 0 auto}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.22s;white-space:nowrap}
.btn-solid{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#04121d;
  box-shadow:0 10px 24px rgba(14,165,233,.28)}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(14,165,233,.36)}
.btn-ghost{border-color:var(--line-2);color:var(--ink-2);background:#fff}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{height:54px;padding:0 32px;font-size:16px}

/* ---------------- 全屏轮播 ---------------- */
.hero{position:relative;height:calc(100vh - 82px);min-height:660px;overflow:hidden;
  background:#081420;color:#fff}
.slide{position:absolute;inset:0;opacity:0;transform:scale(1.04);
  transition:opacity 1s ease,transform 6s linear;pointer-events:none}
.slide.on{opacity:1;transform:scale(1);pointer-events:auto}
.slide::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,200,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,200,255,.055) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(120% 90% at 50% 20%,#000 25%,transparent 78%)}
.slide::after{content:"";position:absolute;width:900px;height:900px;right:-220px;top:-260px;
  background:radial-gradient(circle,rgba(34,211,238,.20),transparent 62%);filter:blur(10px)}
.hero-inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;
  justify-content:center;gap:26px;max-width:1600px;margin:0 auto;padding:0 56px}
.hero-tag{display:inline-flex;align-items:center;gap:10px;align-self:flex-start;
  padding:8px 16px;border-radius:999px;font-size:13.5px;letter-spacing:.6px;
  color:#9fe8f8;background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.28)}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:#22d3ee;
  box-shadow:0 0 0 4px rgba(34,211,238,.18);animation:pulse 2.4s infinite}
@keyframes pulse{50%{opacity:.45}}
.hero h1{font-size:clamp(38px,4.6vw,74px);letter-spacing:-.02em;max-width:15em;
  background:linear-gradient(100deg,#fff 20%,#c9f1ff 60%,#7fe3f5 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.hero p{max-width:44em;font-size:clamp(15px,1.25vw,19px);color:#a9c1d6;line-height:1.85}
.hero-btns{display:flex;gap:16px;margin-top:8px;flex-wrap:wrap}
.hero-btns .btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22);
  color:#e6f4ff}
.hero-btns .btn-ghost:hover{border-color:var(--accent-2);color:#fff;background:rgba(34,211,238,.12)}
.hero-meta{display:flex;gap:56px;margin-top:34px;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta b{font-size:26px;letter-spacing:-.02em;color:#fff}
.hero-meta span{font-size:13px;color:#7d95ab}

/* 轮播控件 */
.hero-dots{position:absolute;left:56px;bottom:56px;z-index:5;display:flex;gap:10px}
.hero-dots button{width:44px;height:4px;border:0;border-radius:4px;cursor:pointer;
  background:rgba(255,255,255,.22);padding:0;overflow:hidden;position:relative}
.hero-dots button.on{background:rgba(255,255,255,.28)}
.hero-dots button.on::after{content:"";position:absolute;inset:0;transform-origin:left;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  animation:dotFill 6.2s linear forwards}
@keyframes dotFill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.hero-arrow{position:absolute;top:50%;z-index:5;width:52px;height:52px;border-radius:50%;
  border:1px solid rgba(255,255,255,.2);background:rgba(8,20,32,.35);color:#dff3ff;
  cursor:pointer;font-size:18px;display:grid;place-items:center;transform:translateY(-50%);
  transition:.2s;backdrop-filter:blur(6px)}
.hero-arrow:hover{border-color:var(--accent-2);background:rgba(34,211,238,.16)}
.hero-prev{left:26px}.hero-next{right:26px}
.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:5;
  font-size:12px;color:#7d95ab;letter-spacing:.2em;display:flex;flex-direction:column;
  align-items:center;gap:6px}
.hero-scroll::after{content:"";width:1px;height:26px;background:linear-gradient(#22d3ee,transparent)}

/* ---------------- 通用版块 ---------------- */
.section{padding:112px 0}
.section.soft{background:linear-gradient(180deg,#fbfdff,var(--soft))}
.sec-head{max-width:820px;margin-bottom:56px}
.sec-tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.sec-tag::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.sec-head h2{font-size:clamp(28px,2.6vw,42px);font-weight:800;letter-spacing:-.02em}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16.5px;line-height:1.9}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .sec-tag{justify-content:center}

/* 功能卡 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:1100px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.feat-grid{grid-template-columns:1fr}}
.feat-card{position:relative;padding:34px 32px 32px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;transition:.28s;overflow:hidden}
.feat-card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 180px at 100% 0,rgba(34,211,238,.10),transparent 70%);
  opacity:0;transition:.3s}
.feat-card:hover{transform:translateY(-4px);border-color:#cfe6f6;box-shadow:var(--shadow)}
.feat-card:hover::after{opacity:1}
.feat-ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(150deg,#effaff,#e3f4ff);border:1px solid #d9ecfa;
  color:var(--accent);margin-bottom:22px;font-size:0}
.feat-card h3{font-size:19.5px;margin-bottom:10px;font-weight:700}
.feat-card p{color:var(--muted);font-size:15px;line-height:1.85}
.feat-card ul{margin:14px 0 0;padding-left:18px;color:var(--ink-2);font-size:14px;line-height:1.9}
.feat-card ul li::marker{color:var(--accent-2)}

/* 工作流（深色区） */
.flow-sec{background:var(--dark);color:#dce9f5;position:relative;overflow:hidden}
.flow-sec::before{content:"";position:absolute;inset:0;
  background-image:radial-gradient(60% 50% at 85% 10%,rgba(34,211,238,.16),transparent 70%)}
.flow-sec .sec-head h2{color:#fff}
.flow-sec .sec-head p{color:#93aac0}
.flow{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
@media(max-width:1040px){.flow{grid-template-columns:1fr;gap:40px}}
.flow-steps{display:flex;flex-direction:column;gap:8px}
.flow-step{display:flex;gap:20px;padding:22px 24px;border-radius:14px;
  border:1px solid rgba(120,190,230,.10);background:rgba(255,255,255,.02);transition:.25s;cursor:default}
.flow-step.on,.flow-step:hover{background:rgba(34,211,238,.07);border-color:rgba(34,211,238,.32)}
.flow-num{flex:0 0 40px;height:40px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:15px;color:#22d3ee;background:rgba(34,211,238,.10);
  border:1px solid rgba(34,211,238,.28)}
.flow-step h4{font-size:16.5px;color:#eaf6ff;margin-bottom:4px}
.flow-step p{font-size:14px;color:#8fa6bb;line-height:1.75}
.flow-demo{position:relative;border-radius:18px;border:1px solid rgba(120,190,230,.16);
  background:linear-gradient(170deg,rgba(12,30,46,.96),rgba(8,20,32,.98));
  box-shadow:0 40px 90px rgba(0,0,0,.5);overflow:hidden}
.demo-bar{display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;
  border-bottom:1px solid rgba(120,190,230,.12);background:rgba(255,255,255,.02)}
.demo-bar i{width:9px;height:9px;border-radius:50%;background:#2d4256;display:block}
.demo-bar i:nth-child(1){background:#ff5f57}.demo-bar i:nth-child(2){background:#febc2e}
.demo-bar i:nth-child(3){background:#28c840}
.demo-bar span{margin-left:10px;font-size:12px;color:#6f879c;letter-spacing:.3px}
.demo-body{padding:18px 18px 22px;display:grid;grid-template-columns:170px 1fr;gap:14px}
@media(max-width:560px){.demo-body{grid-template-columns:1fr}}
.demo-side{display:flex;flex-direction:column;gap:7px}
.demo-side b{font-size:11px;letter-spacing:.14em;color:#607a90;font-weight:700;margin-bottom:2px}
.demo-item{font-size:12.5px;color:#9db6cb;padding:8px 10px;border-radius:8px;
  border:1px solid rgba(120,190,230,.10);background:rgba(255,255,255,.02)}
.demo-item.act{color:#a9f0ff;border-color:rgba(34,211,238,.34);background:rgba(34,211,238,.08)}
.demo-main{border-radius:12px;border:1px solid rgba(120,190,230,.12);
  background:rgba(4,12,20,.6);padding:14px;display:flex;flex-direction:column;gap:10px}
.demo-line{height:9px;border-radius:6px;background:rgba(120,190,230,.10)}
.demo-line.w1{width:64%}.demo-line.w2{width:82%}.demo-line.w3{width:46%}
.demo-chip{display:inline-flex;align-self:flex-start;font-size:11.5px;color:#04212a;
  background:linear-gradient(120deg,#0ea5e9,#22d3ee);padding:5px 11px;border-radius:999px;font-weight:700}
.demo-kv{margin-top:auto;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.demo-kv div{font-size:11.5px;color:#7f97ac;border:1px solid rgba(120,190,230,.12);
  border-radius:8px;padding:8px 10px;background:rgba(255,255,255,.015)}
.demo-kv b{display:block;color:#c9e9f7;font-size:14px;margin-top:2px}

/* 版本权益 */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
@media(max-width:980px){.plan-grid{grid-template-columns:1fr}}
.plan-card{position:relative;border:1px solid var(--line);border-radius:20px;background:#fff;
  padding:38px 34px;display:flex;flex-direction:column;transition:.28s}
.plan-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.plan-card.hot{background:linear-gradient(180deg,#081420,#0c2233);color:#e8f5ff;
  border-color:#123a4d;box-shadow:0 26px 60px rgba(8,20,32,.32)}
.plan-card.hot .plan-name,.plan-card.hot .plan-price b{color:#fff}
.plan-badge{position:absolute;top:22px;right:24px;font-size:11.5px;letter-spacing:.1em;
  padding:5px 12px;border-radius:999px;background:linear-gradient(120deg,#0ea5e9,#22d3ee);
  color:#04121d;font-weight:800}
.plan-name{font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  font-weight:700}
.plan-price{display:flex;align-items:flex-end;gap:6px;margin:18px 0 6px}
.plan-price b{font-size:46px;line-height:1;letter-spacing:-.03em;font-weight:800}
.plan-price span{font-size:14px;color:var(--muted);padding-bottom:6px}
.plan-desc{font-size:14px;color:var(--muted);min-height:44px}
.plan-card.hot .plan-desc{color:#9db6cb}
.plan-list{list-style:none;margin:26px 0 30px;padding:0;display:flex;flex-direction:column;gap:12px;flex:1}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.plan-card.hot .plan-list li{color:#c6dced}
.plan-list li::before{content:"";flex:0 0 18px;height:18px;border-radius:50%;margin-top:4px;
  background:rgba(34,211,238,.14);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230ea5e9' stroke-width='3'><path d='M5 12.5l4.5 4.5L19 7.5'/></svg>");
  background-size:12px;background-position:center;background-repeat:no-repeat}

/* 新闻 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
@media(max-width:1000px){.news-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.news-grid{grid-template-columns:1fr}}
.news-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;overflow:hidden;transition:.26s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe6f6}
.news-cover{height:186px;background:linear-gradient(140deg,#0b2237,#10465c);position:relative;
  display:flex;align-items:flex-end;padding:18px}
.news-cover span{font-size:11.5px;letter-spacing:.14em;color:#9fe8f8;
  border:1px solid rgba(34,211,238,.35);padding:4px 10px;border-radius:999px;
  background:rgba(34,211,238,.10);font-weight:700}
.news-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-body h3{font-size:18px;line-height:1.5;font-weight:700}
.news-body p{font-size:14px;color:var(--muted);line-height:1.8;flex:1}
.news-meta{display:flex;justify-content:space-between;font-size:12.5px;color:#8296aa;
  border-top:1px solid var(--line);padding-top:14px}
.news-more{display:flex;justify-content:center;margin-top:44px}

/* FAQ */
.faq{max-width:1080px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:12px;
  padding:0 26px;transition:.22s}
.faq details[open]{border-color:#cfe6f6;box-shadow:var(--shadow-sm)}
.faq summary{list-style:none;cursor:pointer;padding:22px 0;font-size:16.5px;font-weight:600;
  display:flex;justify-content:space-between;align-items:center;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--accent);font-weight:400;transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 0 22px;color:var(--muted);font-size:15px;line-height:1.9;max-width:92%}

/* CTA */
.cta{margin:0 auto 110px;max-width:1600px;padding:0 56px}
@media(max-width:1200px){.cta{padding:0 28px}}
.cta-box{position:relative;overflow:hidden;border-radius:26px;padding:74px 64px;
  background:linear-gradient(120deg,#071426,#0b2b42 55%,#0a4a5e);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-box::before{content:"";position:absolute;width:620px;height:620px;right:-140px;top:-220px;
  background:radial-gradient(circle,rgba(34,211,238,.22),transparent 62%)}
.cta-box h2{font-size:clamp(26px,2.6vw,40px);position:relative;z-index:1}
.cta-box p{margin-top:12px;color:#9fb8cd;position:relative;z-index:1;max-width:44em}
.cta-acts{display:flex;gap:14px;position:relative;z-index:1;flex-wrap:wrap}

/* 页脚 */
.site-foot{background:#060f19;color:#8ba1b6;padding:76px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-logo{font-size:20px;font-weight:800;color:#eaf6ff;letter-spacing:.2px;margin-bottom:14px}
.foot-brand p{font-size:14px;line-height:1.9;max-width:34em}
.foot-small{margin-top:12px;color:#5f7488;font-size:13px}
.foot-col h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#c8dceb;
  margin-bottom:18px;font-weight:700}
.foot-col a{display:block;font-size:14px;padding:6px 0;color:#8ba1b6;transition:.2s}
.foot-col a:hover{color:#22d3ee}
.foot-col span{display:block;font-size:14px;padding:6px 0}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:52px;padding-top:26px;border-top:1px solid rgba(120,160,190,.14);
  font-size:13px;color:#5f7488}

/* ---------------- 认证 / 会员中心 ---------------- */
.auth-wrap{min-height:calc(100vh - 82px);display:grid;place-items:center;padding:70px 24px 90px;
  background:radial-gradient(1000px 600px at 15% -10%,#eef9ff,#f7fbff 45%,#fff 100%)}
.auth-card{width:100%;max-width:520px;background:#fff;border:1px solid var(--line);
  border-radius:22px;padding:44px 44px 40px;box-shadow:var(--shadow)}
.auth-card h1{font-size:27px;margin-bottom:8px}
.auth-card .lead{color:var(--muted);font-size:14.5px;margin-bottom:30px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;
  letter-spacing:.02em}
.field input{width:100%;height:46px;padding:0 14px;border-radius:11px;border:1px solid var(--line-2);
  background:#fbfdff;font-size:15px;color:var(--ink);outline:none;transition:.2s}
.field input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(14,165,233,.10)}
.field .hint{font-size:12.5px;color:#8296aa;margin-top:7px}
.auth-card .btn{width:100%;height:48px;margin-top:8px}
.auth-alt{text-align:center;margin-top:22px;font-size:14px;color:var(--muted)}
.auth-alt a{color:var(--accent);font-weight:600}
.form-err{padding:12px 14px;border-radius:10px;background:#fff2f4;border:1px solid #ffd4db;
  color:#c8324a;font-size:14px;margin-bottom:18px}
.form-ok{padding:12px 14px;border-radius:10px;background:#f0fdf6;border:1px solid #c9f2dc;
  color:#0f8a52;font-size:14px;margin-bottom:18px}
.flash{margin:22px 0 0;padding:13px 16px;border-radius:12px;font-size:14.5px;
  border:1px solid #c9f2dc;background:#f0fdf6;color:#0f8a52}
.flash-err{border-color:#ffd4db;background:#fff2f4;color:#c8324a}

/* 会员中心 */
.member-wrap{padding:56px 0 100px;background:linear-gradient(180deg,#f8fbff,#fff 320px)}
.member-grid{display:grid;grid-template-columns:340px 1fr;gap:28px;align-items:start}
@media(max-width:980px){.member-grid{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 32px}
.card h2{font-size:18px;margin-bottom:6px}
.card .sub{color:var(--muted);font-size:13.5px;margin-bottom:24px}
.profile{text-align:center;padding:38px 28px 30px}
.avatar{width:84px;height:84px;border-radius:26px;margin:0 auto 18px;display:grid;place-items:center;
  font-size:34px;font-weight:800;color:#04121d;
  background:linear-gradient(140deg,#0ea5e9,#22d3ee);box-shadow:0 14px 30px rgba(14,165,233,.26)}
.profile h3{font-size:20px}
.profile .mail{color:var(--muted);font-size:13.5px;margin-top:4px}
.plan-pill{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  font-size:13px;font-weight:700;margin-top:16px;background:#eef9ff;color:#0b6d94;
  border:1px solid #cdecfb}
.plan-pill.pro{background:#f2f0ff;color:#5b48c9;border-color:#ddd6ff}
.plan-pill.ultimate{background:linear-gradient(120deg,#081420,#0c2233);color:#7fe3f5;
  border-color:#123a4d}
.kv-list{margin-top:26px;border-top:1px solid var(--line);padding-top:20px;
  display:flex;flex-direction:column;gap:14px;text-align:left}
.kv-list div{display:flex;justify-content:space-between;font-size:14px}
.kv-list span{color:var(--muted)}
.kv-list b{font-weight:600}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:28px}
@media(max-width:680px){.stat-row{grid-template-columns:1fr}}
.stat{padding:22px 24px;border-radius:14px;border:1px solid var(--line);background:#fbfdff}
.stat b{display:block;font-size:26px;letter-spacing:-.02em}
.stat span{font-size:13px;color:var(--muted)}

/* ---------------- 文章 ---------------- */
.page-hero{padding:64px 0 44px;background:linear-gradient(180deg,#f4faff,#fff);
  border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(28px,3vw,40px);font-weight:800}
.page-hero p{color:var(--muted);margin-top:10px;font-size:15.5px}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:34px 0 36px}
.chip{padding:9px 18px;border-radius:999px;border:1px solid var(--line-2);font-size:14px;
  color:var(--ink-2);background:#fff;transition:.2s}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.on{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#04121d;
  border-color:transparent;font-weight:700}
.search-box{margin-left:auto;display:flex;gap:10px}
.search-box input{height:42px;width:280px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-2);background:#fff;font-size:14px;outline:none}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(14,165,233,.10)}
.search-box button{height:42px;padding:0 22px;border-radius:999px;border:0;cursor:pointer;
  background:var(--ink);color:#fff;font-size:14px;font-weight:600}
.article-list{display:flex;flex-direction:column;gap:18px}
.article-row{display:grid;grid-template-columns:200px 1fr;gap:26px;padding:22px;
  border:1px solid var(--line);border-radius:16px;background:#fff;transition:.24s}
.article-row:hover{border-color:#cfe6f6;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
@media(max-width:720px){.article-row{grid-template-columns:1fr}}
.article-thumb{height:132px;border-radius:12px;background:linear-gradient(140deg,#0b2237,#10465c);
  display:grid;place-items:center;color:#7fe3f5;font-size:12px;letter-spacing:.16em;font-weight:700}
.article-row h3{font-size:19px;margin-bottom:8px}
.article-row p{color:var(--muted);font-size:14.5px;line-height:1.8}
.article-row .meta{margin-top:12px;font-size:12.5px;color:#8296aa;display:flex;gap:18px;flex-wrap:wrap}
.pager{display:flex;gap:8px;justify-content:center;margin-top:48px}
.pager a,.pager span{min-width:42px;height:42px;padding:0 12px;display:grid;place-items:center;
  border-radius:11px;border:1px solid var(--line-2);font-size:14px;background:#fff}
.pager a:hover{border-color:var(--accent);color:var(--accent)}
.pager span.cur{background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#04121d;border-color:transparent;font-weight:700}
.article-page{padding:56px 0 100px}
.article-head{max-width:980px;margin:0 auto 36px;text-align:center}
.article-head h1{font-size:clamp(26px,3.2vw,42px);line-height:1.35;font-weight:800}
.article-head .meta{margin-top:18px;color:#8296aa;font-size:13.5px;display:flex;
  justify-content:center;gap:22px;flex-wrap:wrap}
.article-body{max-width:980px;margin:0 auto;font-size:16.5px;line-height:2;color:#1d2c3d}
.article-body h2{font-size:26px;margin:44px 0 16px}
.article-body h3{font-size:21px;margin:34px 0 12px}
.article-body p{margin:16px 0}
.article-body ul,.article-body ol{margin:16px 0;padding-left:26px}
.article-body li{margin:8px 0}
.article-body blockquote{margin:26px 0;padding:18px 24px;border-left:3px solid var(--accent-2);
  background:#f5fbff;border-radius:0 12px 12px 0;color:var(--ink-2);font-size:15.5px}
.article-body code{background:#eef6fc;padding:2px 7px;border-radius:6px;font-size:14px;
  font-family:ui-monospace,Consolas,monospace;color:#0b6d94}
.article-body img{border-radius:14px;margin:22px 0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-foot{max-width:980px;margin:56px auto 0;padding-top:28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:14px;color:var(--muted)}

@media(max-width:760px){
  .head-inner{height:70px;gap:18px}
  .nav{display:none}
  .hero{min-height:560px}
  .hero-inner{padding:0 24px}
  .hero-dots{left:24px;bottom:32px}
  .hero-arrow{display:none}
  .hero-meta{gap:28px}
  .section{padding:72px 0}
  .cta-box{padding:48px 30px}
  .auth-card{padding:32px 24px}
  .article-body{font-size:16px}
}