/* roulang page: index */
:root{
  --bg-0:#070C15; --bg-1:#0C1422; --bg-2:#111C2E;
  --line:rgba(140,170,200,.14); --line-strong:rgba(160,200,220,.26);
  --ink-1:#E8F0F6; --ink-2:#A9BACC; --ink-3:#6F8398;
  --brand:#35C2A0; --brand-2:#7CE0C4; --accent:#E2A24C; --violet:#6E63E8;
  --ok:#3FBF8F; --warn:#E2A24C; --err:#E4675F;
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --shadow:0 20px 44px -22px rgba(0,0,0,.7);
  --radius:18px; --radius-lg:24px; --radius-sm:12px;
  --container:1200px;
  --trans:220ms cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--ink-1);
  font-family:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,194,160,.3);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:28px;line-height:1.3;font-weight:600;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:68ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand-2);padding:6px 12px;border-radius:999px;
  background:rgba(53,194,160,.1);border:1px solid rgba(53,194,160,.28);
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}

/* ============ 顶栏与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,21,.72);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background var(--trans),box-shadow var(--trans);
}
.site-header.is-stuck{box-shadow:0 12px 32px -20px rgba(0,0,0,.9);background:rgba(7,12,21,.9)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--ink-1)}
.brand:hover{color:var(--ink-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,#35C2A0,#59D9B6 55%,#6E63E8);
  box-shadow:0 8px 20px -10px rgba(53,194,160,.9),inset 0 1px 0 rgba(255,255,255,.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:2px solid rgba(6,18,26,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:600;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:color var(--trans),background var(--trans);
}
.nav-links a:hover{color:var(--ink-1);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--brand-2);background:rgba(53,194,160,.12)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-1);border-radius:2px;transition:transform var(--trans),opacity var(--trans)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:14px 26px;border-radius:999px;
  transition:transform var(--trans),box-shadow var(--trans),background var(--trans),border-color var(--trans),color var(--trans);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#35C2A0,#59D9B6);color:#06121A;
  box-shadow:0 10px 30px -8px rgba(53,194,160,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(53,194,160,.7);color:#06121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--ink-1);border:1px solid var(--line-strong);
}
.btn-ghost:hover{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(124,224,196,.12);color:var(--ink-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-text{color:var(--brand);text-underline-offset:4px;font-size:14px;font-weight:600;border-bottom:1px solid rgba(53,194,160,.4)}
.link-text:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}

/* ============ 进度步骤导航 ============ */
.steps-bar{border-top:1px solid var(--line);background:rgba(12,20,34,.6)}
.steps{display:flex;align-items:center;gap:0;padding:11px 0;overflow-x:auto;scrollbar-width:none}
.steps::-webkit-scrollbar{display:none}
.step{display:flex;align-items:center;gap:10px;flex:1;min-width:max-content;color:var(--ink-3);font-size:13px;transition:color var(--trans)}
.step-dot{
  width:23px;height:23px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-size:12px;font-weight:600;
  border:1px solid var(--line-strong);color:var(--ink-3);background:rgba(255,255,255,.03);
  transition:all var(--trans);
}
.step-line{flex:1;height:1px;background:var(--line);margin:0 12px;min-width:24px}
.step.is-active{color:var(--brand-2)}
.step.is-active .step-dot{background:var(--brand);border-color:var(--brand);color:#06121A;box-shadow:0 0 0 4px rgba(53,194,160,.18)}
.step.is-done{color:var(--ink-2)}
.step.is-done .step-dot{border-color:var(--brand);color:var(--brand-2);background:rgba(53,194,160,.12)}
.step.is-done .step-line{background:linear-gradient(90deg,var(--brand),rgba(53,194,160,.2))}

/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 64px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 12% 0%,rgba(53,194,160,.22),transparent 70%),
    radial-gradient(560px 300px at 88% 18%,rgba(110,99,232,.2),transparent 72%),
    linear-gradient(180deg,rgba(7,12,21,.86) 0%,rgba(7,12,21,.94) 62%,var(--bg-0) 100%);
}
.hero-inner{position:relative;z-index:2}
.hero h1{
  font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.01em;
  max-width:920px;margin-top:22px;
}
.hero h1 em{font-style:normal;color:var(--brand-2)}
.hero-lead{
  margin-top:22px;max-width:800px;color:var(--ink-2);font-size:16px;line-height:1.95;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{
  margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);
}
.metric{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:22px 24px;
}
.metric-num{font-size:32px;font-weight:700;color:var(--brand-2);letter-spacing:-.02em;line-height:1.2}
.metric-num small{font-size:15px;font-weight:600;color:var(--brand);margin-left:3px}
.metric-label{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.6}

/* ============ 通用卡片 ============ */
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
  transition:transform var(--trans),border-color var(--trans),box-shadow var(--trans);
  position:relative;
}
.card:hover{
  transform:translateY(-3px);border-color:var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow),0 0 0 1px rgba(53,194,160,.35);
}
.card-body{padding:26px}
.card h3{font-size:20px;line-height:1.4;font-weight:600}
.card p{margin-top:10px;color:var(--ink-2);font-size:14px;line-height:1.85}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:5px 11px;border-radius:999px;color:var(--brand-2);
  background:rgba(53,194,160,.12);border:1px solid rgba(53,194,160,.3);
}
.chip--amber{color:var(--accent);background:rgba(226,162,76,.12);border-color:rgba(226,162,76,.34)}
.chip--gray{color:var(--ink-2);background:rgba(255,255,255,.05);border-color:var(--line)}

/* ============ 问题陈述 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.problem-card{padding:28px 26px}
.problem-idx{
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.14em;
  display:block;margin-bottom:14px;
}
.problem-card h3{font-size:18px}
.problem-card p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.85}

/* ============ 操作演示 ============ */
.demo{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.demo-stage{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow);position:relative;aspect-ratio:16/10;background:var(--bg-2);
}
.demo-stage img{width:100%;height:100%;object-fit:cover;transition:transform 500ms ease}
.demo-stage:hover img{transform:scale(1.03)}
.demo-float{
  position:absolute;right:16px;bottom:16px;padding:14px 18px;border-radius:14px;
  background:rgba(9,17,29,.78);border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.demo-float strong{display:block;font-size:18px;color:var(--brand-2);line-height:1.2}
.demo-float span{font-size:12px;color:var(--ink-3)}
.demo-steps{display:flex;flex-direction:column;gap:0}
.demo-step{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.demo-step:last-child{border-bottom:0}
.demo-step .num{
  width:38px;height:38px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  font-weight:700;font-size:15px;color:var(--brand-2);
  background:rgba(53,194,160,.1);border:1px solid rgba(53,194,160,.3);
}
.demo-step h3{font-size:17px;font-weight:600}
.demo-step p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.85}

/* ============ 结果预览 ============ */
.result-band{
  border-radius:var(--radius-lg);border:1px solid var(--line);overflow:hidden;
  background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  display:grid;grid-template-columns:1.1fr 1fr;
}
.result-text{padding:40px}
.result-text h2{font-size:26px;line-height:1.35;font-weight:600}
.result-text p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.9}
.result-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.result-list li{display:flex;gap:12px;font-size:14px;color:var(--ink-2);line-height:1.8}
.result-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;flex-shrink:0;margin-top:9px;
  background:var(--brand);box-shadow:0 0 10px rgba(53,194,160,.8);
}
.result-media{position:relative;min-height:320px;background:var(--bg-2)}
.result-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.92}

/* ============ 栏目矩阵 ============ */
.matrix{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.matrix-card{
  grid-column:span 2;padding:28px 24px 24px;display:flex;flex-direction:column;min-height:196px;
}
.matrix-card .ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(53,194,160,.12);border:1px solid rgba(53,194,160,.28);
  color:var(--brand-2);font-size:17px;font-weight:700;margin-bottom:16px;
}
.matrix-card h3{font-size:18px}
.matrix-card p{font-size:14px;color:var(--ink-2);margin-top:8px;line-height:1.8}
.matrix-card .go{
  margin-top:auto;padding-top:18px;font-size:13px;color:var(--brand-2);font-weight:600;
  display:flex;align-items:center;gap:6px;
}
.matrix-wide{
  grid-column:span 3;flex-direction:row;align-items:center;gap:24px;min-height:auto;padding:26px 28px;
}
.matrix-wide .ico{margin-bottom:0;flex-shrink:0}
.matrix-wide .txt{flex:1}
.matrix-wide .go{padding-top:0;margin-top:0;flex-shrink:0}

/* ============ 鉴茶体系 ============ */
.tea-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
.tea-intro p{color:var(--ink-2);font-size:15px;line-height:1.95;margin-top:16px}
.tea-intro .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.ladder{display:flex;flex-direction:column;gap:0;position:relative}
.ladder-item{
  display:flex;gap:22px;padding:24px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--glass);margin-bottom:14px;
  transition:border-color var(--trans),transform var(--trans),box-shadow var(--trans);
}
.ladder-item:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:0 0 0 1px rgba(53,194,160,.28)}
.ladder-num{
  font-size:26px;font-weight:700;color:rgba(53,194,160,.5);line-height:1;flex-shrink:0;width:44px;
}
.ladder-item h3{font-size:18px}
.ladder-item p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.85}
.ladder-item .chip{margin-top:14px}

/* ============ 场景专题 ============ */
.scene-list{display:flex;flex-direction:column;gap:18px}
.scene-card{
  display:grid;grid-template-columns:280px 1fr auto;gap:28px;align-items:center;
  padding:20px;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:border-color var(--trans),transform var(--trans),box-shadow var(--trans);
}
.scene-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow),0 0 0 1px rgba(53,194,160,.3)}
.scene-thumb{border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 480ms ease}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body h3{font-size:20px}
.scene-body p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.85;max-width:58ch}
.scene-body .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.scene-cta{flex-shrink:0}

/* ============ 流程时间轴 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.flow-item{padding:28px 24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--glass);position:relative}
.flow-item::after{
  content:"";position:absolute;top:50%;right:-19px;width:18px;height:1px;background:var(--line-strong);
}
.flow-item:last-child::after{display:none}
.flow-item.is-key{border-color:rgba(53,194,160,.5);box-shadow:0 0 0 1px rgba(53,194,160,.28),var(--shadow)}
.flow-num{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;
  background:rgba(53,194,160,.12);border:1px solid rgba(53,194,160,.34);color:var(--brand-2);
  box-shadow:0 0 16px -4px rgba(53,194,160,.7);
}
.flow-item h3{font-size:17px;margin-top:16px}
.flow-item p{margin-top:8px;font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* ============ 卡住点 ============ */
.stuck-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.stuck-card{padding:24px;display:flex;gap:16px;align-items:flex-start}
.stuck-card .mark{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;display:grid;place-items:center;
  color:var(--accent);background:rgba(226,162,76,.12);border:1px solid rgba(226,162,76,.32);font-weight:700;font-size:14px;
}
.stuck-card h3{font-size:16.5px}
.stuck-card p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.8}

/* ============ 案例墙 ============ */
.case-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.case-col{display:flex;flex-direction:column;gap:22px}
.case-col--offset{padding-top:34px}
.case-card{
  display:block;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:border-color var(--trans),transform var(--trans),box-shadow var(--trans);
}
.case-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow),0 0 0 1px rgba(53,194,160,.32)}
.case-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 500ms ease}
.case-card:hover .case-thumb img{transform:scale(1.04)}
.case-body{padding:22px}
.case-body h3{font-size:17px;line-height:1.5;color:var(--ink-1);transition:color var(--trans)}
.case-card:hover .case-body h3{color:var(--brand-2)}
.case-body p{margin-top:8px;font-size:13.5px;color:var(--ink-2);line-height:1.8}
.case-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12px;color:var(--ink-3)}
.case-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3)}

/* ============ 专题列表 ============ */
.topic-list{border-top:1px solid var(--line)}
.topic-item{
  display:grid;grid-template-columns:88px 1fr auto;gap:24px;align-items:center;
  padding:26px 8px;border-bottom:1px solid var(--line);transition:background var(--trans);
}
.topic-item:hover{background:rgba(255,255,255,.035)}
.topic-num{font-size:30px;font-weight:700;color:rgba(53,194,160,.42);letter-spacing:-.02em;line-height:1}
.topic-body h3{font-size:18px;color:var(--ink-1);transition:color var(--trans)}
.topic-item:hover .topic-body h3{color:var(--brand-2)}
.topic-body p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.8}
.topic-tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.topic-more{font-size:13px;font-weight:600;color:var(--brand-2);white-space:nowrap}

/* ============ 安全 ============ */
.safety{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:start}
.safety-list{display:flex;flex-direction:column;gap:2px}
.safety-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.safety-item:last-child{border-bottom:0}
.safety-item .ico{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;display:grid;place-items:center;
  background:rgba(53,194,160,.1);border:1px solid rgba(53,194,160,.28);color:var(--brand-2);font-weight:700;font-size:15px;
}
.safety-item h3{font-size:16.5px}
.safety-item p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.8}
.safety-note{
  padding:30px 28px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(226,162,76,.1),rgba(255,255,255,.02));
  border:1px solid rgba(226,162,76,.34);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),var(--shadow);
}
.safety-note h3{font-size:19px;color:var(--accent)}
.safety-note p{margin-top:14px;font-size:14px;color:var(--ink-2);line-height:1.9}
.safety-note ul{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.safety-note li{font-size:13.5px;color:var(--ink-2);padding-left:16px;position:relative;line-height:1.8}
.safety-note li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:26px;align-items:start}
.news-feature{
  display:block;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  transition:border-color var(--trans),transform var(--trans);
}
.news-feature:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.news-feature .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 520ms ease}
.news-feature:hover .thumb img{transform:scale(1.03)}
.news-feature .body{padding:26px}
.news-feature h3{font-size:21px;line-height:1.45;color:var(--ink-1)}
.news-feature:hover h3{color:var(--brand-2)}
.news-feature p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.85}
.news-feature .meta{margin-top:16px;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-3)}
.news-side{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.news-item{
  display:block;padding:20px 14px 20px 18px;border-bottom:1px solid var(--line);position:relative;
  transition:background var(--trans);
}
.news-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity var(--trans);
}
.news-item:hover{background:rgba(255,255,255,.04)}
.news-item:hover::before{opacity:1}
.news-item h3{font-size:15.5px;line-height:1.6;color:var(--ink-1);transition:color var(--trans)}
.news-item:hover h3{color:var(--brand-2)}
.news-item .meta{margin-top:8px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-3)}
.news-foot{margin-top:28px;display:flex;justify-content:center}

/* ============ 下载 ============ */
.dl-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:center}
.dl-left h2{font-size:28px;line-height:1.35;font-weight:600}
.dl-left p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:56ch}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.qr-box{
  width:118px;height:118px;border-radius:14px;border:1px dashed var(--line-strong);
  background:rgba(255,255,255,.03);display:grid;place-items:center;
  font-size:12px;color:var(--ink-3);text-align:center;line-height:1.5;margin-top:26px;padding:10px;
}
.dl-panel{padding:30px 28px}
.dl-panel h3{font-size:16px;color:var(--ink-2);font-weight:600;letter-spacing:.04em}
.version-list{margin-top:18px;display:flex;flex-direction:column;gap:0}
.version-item{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.version-item:last-child{border-bottom:0}
.version-item span{color:var(--ink-3);font-size:13px}
.version-item strong{color:var(--ink-1);font-weight:600}

/* ============ 评价墙 ============ */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.quote-col{display:flex;flex-direction:column;gap:22px}
.quote-col--offset{padding-top:30px}
.quote-card{padding:26px;position:relative;overflow:hidden}
.quote-card::before{
  content:"“";position:absolute;right:14px;top:-14px;font-size:96px;line-height:1;
  color:rgba(53,194,160,.12);font-family:Georgia,serif;pointer-events:none;
}
.quote-text{font-size:15.5px;line-height:1.9;color:var(--ink-1);position:relative;z-index:1}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:20px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  font-size:14px;font-weight:700;color:#06121A;background:linear-gradient(135deg,#7CE0C4,#35C2A0);
}
.quote-user .name{font-size:14px;font-weight:600}
.quote-user .city{font-size:12px;color:var(--ink-3)}

/* ============ 城市与伙伴 ============ */
.partner-row{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:26px}
.partner-logo{
  aspect-ratio:16/9;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:rgba(255,255,255,.03);display:grid;place-items:center;
  font-size:13px;color:var(--ink-3);transition:all var(--trans);filter:grayscale(1);opacity:.72;
}
.partner-logo:hover{filter:grayscale(0);opacity:1;border-color:var(--line-strong);color:var(--brand-2);box-shadow:0 0 0 1px rgba(53,194,160,.25)}
.city-tags{display:flex;flex-wrap:wrap;gap:10px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink-1);transition:color var(--trans);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-2)}
.faq-icon{
  position:relative;width:26px;height:26px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line-strong);transition:transform var(--trans),border-color var(--trans);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);border-radius:2px;
  transform:translate(-50%,-50%);transition:background var(--trans);
}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--brand)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--brand-2)}
.faq-answer{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:64ch}
.faq-aside{padding:28px 24px;text-align:left}
.faq-aside h3{font-size:17px}
.faq-aside p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.85}
.faq-aside .btn{margin-top:18px;width:100%}

/* ============ 保障条 ============ */
.guard-bar{
  display:flex;flex-wrap:wrap;gap:14px 34px;align-items:center;justify-content:center;
  padding:22px 26px;border-radius:999px;background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.guard-item{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-2);letter-spacing:.06em}
.guard-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(53,194,160,.9)}

/* ============ 表单 / CTA ============ */
.cta-card{
  display:grid;grid-template-columns:1fr 1.05fr;gap:44px;
  padding:46px;border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:linear-gradient(150deg,rgba(53,194,160,.1),rgba(110,99,232,.08) 55%,rgba(255,255,255,.02));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),var(--shadow);
}
.cta-left h2{font-size:29px;line-height:1.38;font-weight:600}
.cta-left p{margin-top:16px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:46ch}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--ink-2)}
.cta-points li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);flex-shrink:0;margin-top:9px;box-shadow:0 0 8px rgba(124,224,196,.9)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{position:relative;display:block}
.field--full{grid-column:1/-1}
.field input,.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:12px;padding:22px 14px 10px;font-size:15px;color:var(--ink-1);
  transition:border-color var(--trans),box-shadow var(--trans),background var(--trans);
  appearance:none;-webkit-appearance:none;
}
.field textarea{min-height:104px;resize:vertical;padding-top:26px}
.field label{
  position:absolute;left:14px;top:16px;font-size:14px;color:var(--ink-3);pointer-events:none;
  transition:all var(--trans);
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(53,194,160,.15);background:rgba(53,194,160,.05);
}
.field input:focus+label,.field textarea:focus+label,
.field input:not(:placeholder-shown)+label,.field textarea:not(:placeholder-shown)+label{
  top:6px;font-size:11px;color:var(--brand-2);letter-spacing:.04em;
}
.field.has-error input,.field.has-error textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(228,103,95,.14)}
.field-err{display:none;margin-top:6px;font-size:12px;color:var(--err)}
.field.has-error .field-err{display:block}
.form-foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px}
.form-privacy{grid-column:1/-1;font-size:12px;color:var(--ink-3);line-height:1.7;margin-top:2px}
.form-alert{
  grid-column:1/-1;display:none;padding:12px 16px;border-radius:12px;font-size:13.5px;
  border:1px solid rgba(63,191,143,.5);background:rgba(63,191,143,.12);color:#9BEBC9;
}
.form-alert.is-show{display:block}

/* ============ 空态 ============ */
.empty-state{
  grid-column:1/-1;text-align:center;padding:48px 24px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--glass);
}
.empty-state .ico{
  width:50px;height:50px;border-radius:50%;margin:0 auto 16px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--ink-3);font-size:20px;
}
.empty-state p{font-size:14px;color:var(--ink-2)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.9;max-width:34ch}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:14px;font-size:13px;color:var(--ink-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .matrix{grid-template-columns:repeat(4,1fr)}
  .matrix-card{grid-column:span 2}
  .matrix-wide{grid-column:span 4}
}
@media (max-width:1023px){
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(9,16,28,.98);border-bottom:1px solid var(--line);
    padding:14px 24px 22px;display:none;
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:flex}
  .nav-actions{margin-left:auto}
  .nav-actions .btn-ghost{display:none}
  .section{padding:72px 0}
  .hero h1{font-size:34px}
  .hero-metrics{grid-template-columns:repeat(2,1fr)}
  .demo{grid-template-columns:1fr}
  .result-band{grid-template-columns:1fr}
  .result-media{min-height:240px}
  .tea-grid{grid-template-columns:1fr;gap:28px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-item::after{display:none}
  .scene-card{grid-template-columns:200px 1fr;gap:20px}
  .scene-cta{grid-column:1/-1}
  .news-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr}
  .cta-card{grid-template-columns:1fr;padding:36px 28px;gap:30px}
  .safety{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .partner-row{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .section-head h2{font-size:23px}
  .hero{padding:52px 0 48px}
  .hero h1{font-size:30px;line-height:1.35}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .grid-3,.grid-2,.stuck-grid,.quote-grid,.case-wrap{grid-template-columns:1fr}
  .quote-col--offset,.case-col--offset{padding-top:0}
  .matrix{grid-template-columns:1fr}
  .matrix-card,.matrix-wide{grid-column:span 1}
  .matrix-wide{flex-direction:column;align-items:flex-start}
  .scene-card{grid-template-columns:1fr}
  .scene-thumb{aspect-ratio:16/9}
  .flow{grid-template-columns:1fr}
  .topic-item{grid-template-columns:56px 1fr;gap:16px;padding:20px 4px}
  .topic-more{grid-column:2;margin-top:8px}
  .faq-item summary{font-size:16px;padding:18px 2px}
  .guard-bar{border-radius:20px;gap:12px 22px;padding:20px}
  .form-grid{grid-template-columns:1fr}
  .form-foot .btn{width:100%}
  .result-text{padding:28px}
  .dl-panel{padding:24px}
  .partner-row{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:10px}
  .steps{gap:0}
  .step{flex:none}
  .step-line{min-width:26px}
  .metric{padding:18px}
  .metric-num{font-size:26px}
  .hero-metrics{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .hero-metrics{grid-template-columns:1fr}
  .card-body{padding:22px}
  .cta-card{padding:26px 20px}
  .brand-name{font-size:14px}
  .brand-sub{font-size:10px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C15; --bg-1:#0C1422; --bg-2:#111C2E;
  --line:rgba(140,170,200,.14); --line-strong:rgba(160,200,220,.26);
  --ink-1:#E8F0F6; --ink-2:#A9BACC; --ink-3:#6F8398;
  --brand:#35C2A0; --brand-2:#7CE0C4; --accent:#E2A24C; --violet:#6E63E8;
  --ok:#3FBF8F; --warn:#E2A24C; --err:#E4675F;
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --shadow:0 20px 44px -22px rgba(0,0,0,.7);
  --radius:18px; --radius-lg:24px; --radius-sm:12px;
  --container:1200px;
  --trans:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--ink-1);
  font-family:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--brand-2)}
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-2);outline-offset:2px;border-radius:8px;
}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{font-size:28px;line-height:1.32}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:68ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1;letter-spacing:.08em;
  color:var(--brand-2);padding:6px 12px;border-radius:999px;
  background:rgba(53,194,160,.1);border:1px solid rgba(53,194,160,.28);
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,21,.72);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background var(--trans),box-shadow var(--trans);
}
.site-header.is-stuck{box-shadow:0 12px 32px -20px rgba(0,0,0,.9);background:rgba(7,12,21,.9)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--ink-1)}
.brand:hover{color:var(--ink-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;position:relative;
  background:linear-gradient(135deg,#35C2A0,#59D9B6 55%,#6E63E8);
  box-shadow:0 8px 20px -10px rgba(53,194,160,.9),inset 0 1px 0 rgba(255,255,255,.35);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;border:2px solid rgba(6,18,26,.7)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:600}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:15px;color:var(--ink-2);transition:color var(--trans),background var(--trans)}
.nav-links a:hover{color:var(--ink-1);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--brand-2);background:rgba(53,194,160,.12)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-1);border-radius:2px;transition:transform var(--trans),opacity var(--trans)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 步骤条 ============ */
.steps-bar{border-top:1px solid var(--line);background:rgba(12,20,34,.6)}
.steps{display:flex;align-items:center;gap:0;min-height:52px}
.step{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);transition:color var(--trans)}
.step:hover{color:var(--ink-1)}
.step-dot{
  width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;border:1px solid var(--line-strong);color:var(--ink-3);background:rgba(255,255,255,.03);
}
.step.is-done .step-dot{background:rgba(53,194,160,.18);border-color:rgba(53,194,160,.5);color:var(--brand-2)}
.step.is-active{color:var(--brand-2)}
.step.is-active .step-dot{background:var(--brand);border-color:var(--brand);color:#06121A;box-shadow:0 0 0 4px rgba(53,194,160,.18)}
.step-line{display:block;width:64px;height:1px;background:var(--line);margin:0 16px}
.step.is-done .step-line{background:linear-gradient(90deg,var(--brand),rgba(53,194,160,.15));box-shadow:0 0 6px rgba(53,194,160,.5)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:14px 26px;border-radius:999px;
  transition:transform var(--trans),box-shadow var(--trans),background var(--trans),border-color var(--trans),color var(--trans);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#35C2A0,#59D9B6);color:#06121A;box-shadow:0 10px 30px -8px rgba(53,194,160,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(53,194,160,.7);color:#06121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink-1);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(124,224,196,.12);color:var(--ink-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ============ 分类页头 ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;inset:0;z-index:0}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.32}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 250px at 14% 0%,rgba(53,194,160,.24),transparent 70%),
    radial-gradient(440px 220px at 84% 16%,rgba(110,99,232,.2),transparent 74%),
    linear-gradient(180deg,rgba(7,12,21,.84) 0%,rgba(7,12,21,.95) 70%,var(--bg-0) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:44px 0 52px}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);flex-wrap:wrap}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand-2)}
.page-hero-grid{display:grid;grid-template-columns:1.65fr .85fr;gap:40px;align-items:end;margin-top:18px}
.page-hero h1{font-size:34px;line-height:1.34;font-weight:700;letter-spacing:-.01em;max-width:22em}
.page-hero h1 em{font-style:normal;color:var(--brand-2)}
.page-hero-lead{margin-top:18px;color:var(--ink-2);font-size:15px;line-height:1.95;max-width:60ch}
.stat-badges{display:grid;gap:12px}
.stat-badge{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:13px 18px;border-radius:14px;background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.stat-badge strong{font-size:22px;font-weight:700;color:var(--brand-2);line-height:1}
.stat-badge span{font-size:13px;color:var(--ink-3)}

/* ============ 筛选条 ============ */
.filter-wrap{padding:44px 0 0}
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px 26px;
  padding:20px 24px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
}
.filter-group{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.filter-label{font-size:13px;color:var(--ink-3);letter-spacing:.04em;white-space:nowrap}
.pill-row{display:flex;flex-wrap:wrap;gap:8px}
.pill{
  padding:7px 15px;border-radius:999px;font-size:13px;color:var(--ink-2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color var(--trans),background var(--trans),border-color var(--trans);
}
.pill:hover{color:var(--ink-1);border-color:var(--line-strong)}
.pill.is-on{background:rgba(53,194,160,.16);border-color:rgba(53,194,160,.5);color:var(--brand-2)}
.select{
  appearance:none;-webkit-appearance:none;
  padding:9px 38px 9px 16px;border-radius:999px;font-size:13px;color:var(--ink-1);
  background:rgba(255,255,255,.04) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' fill='none' stroke='%237CE0C4' stroke-width='1.6' stroke-linecap='round'/></svg>") no-repeat right 16px center;
  border:1px solid var(--line-strong);cursor:pointer;
}
.select:hover{border-color:var(--brand-2)}
.filter-count{margin-left:auto;font-size:13px;color:var(--ink-3);white-space:nowrap}
.filter-count b{color:var(--brand-2);font-weight:600}

/* ============ 卡片与列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:transform var(--trans),border-color var(--trans),box-shadow var(--trans);
}
.post-card:hover{
  transform:translateY(-3px);border-color:var(--line-strong);
  box-shadow:var(--shadow),0 0 0 1px rgba(53,194,160,.35);
}
.post-thumb{display:block;aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1}
.post-body h3{font-size:17px;line-height:1.5;font-weight:600}
.post-body h3 a{color:var(--ink-1)}
.post-body h3 a:hover{color:var(--brand-2)}
.post-body p{font-size:14px;line-height:1.85;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px;font-size:12px;color:var(--ink-3)}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);display:inline-block}
.chip{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.4;
  color:var(--brand-2);background:rgba(53,194,160,.12);border:1px solid rgba(53,194,160,.3);
}
.chip--amber{color:var(--accent);background:rgba(226,162,76,.12);border-color:rgba(226,162,76,.34)}
.chip--gray{color:var(--ink-2);background:rgba(255,255,255,.05);border-color:var(--line)}
.list-footer{display:flex;justify-content:center;margin-top:38px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:64px 28px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);
}
.empty-state h3{font-size:18px}
.empty-state p{font-size:14px;color:var(--ink-2);max-width:46ch}
.empty-state .link-more{font-size:14px;font-weight:600}

/* ============ 分类导读 ============ */
.guide-grid{display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:start}
.guide-grid h3{font-size:19px;margin-bottom:14px}
.guide-grid p{color:var(--ink-2);font-size:15px;line-height:1.95;margin-bottom:16px;max-width:62ch}
.tick-list{display:grid;gap:10px;margin-top:8px}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.8}
.tick-list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px rgba(53,194,160,.7);
}
.order-card{
  padding:26px 28px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
}
.order-card h3{font-size:18px;margin-bottom:6px}
.order-card .order-sub{font-size:13px;color:var(--ink-3);margin-bottom:20px}
.order-item{display:grid;grid-template-columns:auto 1fr;gap:16px;padding-bottom:18px;position:relative}
.order-item:last-child{padding-bottom:0}
.order-item::before{
  content:"";position:absolute;left:17px;top:40px;bottom:4px;width:1px;
  background:linear-gradient(180deg,rgba(53,194,160,.5),rgba(53,194,160,.06));
}
.order-item:last-child::before{display:none}
.order-no{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--brand-2);
  background:rgba(53,194,160,.14);border:1px solid rgba(53,194,160,.42);
}
.order-item h4{font-size:15px;margin-bottom:4px}
.order-item p{font-size:13px;color:var(--ink-2);line-height:1.8}

/* ============ 榜单 ============ */
.rank-list{display:grid;gap:0;border-top:1px solid var(--line)}
.rank-list li{
  display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;
  padding:22px 6px;border-bottom:1px solid var(--line);
  transition:background var(--trans);
}
.rank-list li:hover{background:rgba(255,255,255,.04)}
.rank-no{
  font-size:26px;font-weight:700;color:var(--brand);opacity:.55;line-height:1;
  font-variant-numeric:tabular-nums;min-width:44px;
}
.rank-list h3{font-size:17px;line-height:1.5}
.rank-list h3 a{color:var(--ink-1)}
.rank-list h3 a:hover{color:var(--brand-2)}
.rank-list p{font-size:13px;color:var(--ink-2);line-height:1.8;margin-top:4px}
.rank-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;font-size:12px;color:var(--ink-3);white-space:nowrap}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.rel-item{
  display:flex;align-items:center;gap:14px;justify-content:space-between;
  padding:15px 6px;border-bottom:1px solid var(--line);
  transition:background var(--trans),padding-left var(--trans);
}
.rel-item:hover{background:rgba(255,255,255,.04);padding-left:12px}
.rel-item::before{content:"";width:2px;height:18px;border-radius:2px;background:transparent;transition:background var(--trans);flex-shrink:0}
.rel-item:hover::before{background:var(--brand)}
.rel-item a{color:var(--ink-1);font-size:15px;line-height:1.6}
.rel-item:hover a{color:var(--brand-2)}
.rel-item time{font-size:12px;color:var(--ink-3);white-space:nowrap;flex-shrink:0}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink-1);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-2)}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform var(--trans);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-2);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 4px 22px;color:var(--ink-2);font-size:15px;line-height:1.95;max-width:70ch}
.faq-aside{
  padding:24px;border-radius:var(--radius);background:var(--glass);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.faq-aside h3{font-size:17px;margin-bottom:10px}
.faq-aside p{font-size:14px;color:var(--ink-2);line-height:1.9;margin-bottom:18px}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:32px 36px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.cta-bar h2{font-size:23px;line-height:1.4;margin-bottom:8px}
.cta-bar p{font-size:14px;color:var(--ink-2)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.footer-brand p{color:var(--ink-2);font-size:14px;line-height:1.9;margin-top:16px;max-width:36ch}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink-1);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--ink-2);font-size:14px}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);color:var(--ink-3);font-size:13px;
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .post-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 24px 20px;margin:0;
    background:rgba(7,12,21,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:11px 12px;font-size:15px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-ghost{display:none}
  .steps{overflow-x:auto;scrollbar-width:none}
  .steps::-webkit-scrollbar{display:none}
  .step-line{width:34px;margin:0 10px}
  .page-hero-grid{grid-template-columns:1fr;gap:26px;align-items:start}
  .stat-badges{grid-template-columns:repeat(3,1fr);display:grid}
  .stat-badge{flex-direction:column;gap:6px;align-items:flex-start}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .guide-grid{grid-template-columns:1fr;gap:26px}
  .faq-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .section-head h2{font-size:24px}
  .page-hero h1{font-size:27px}
  .page-hero-inner{padding:32px 0 40px}
  .post-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .rank-list li{grid-template-columns:auto 1fr;gap:14px}
  .rank-side{align-items:flex-start;grid-column:2;flex-direction:row;gap:10px}
  .cta-bar{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  body{font-size:15px;line-height:1.75}
  .page-hero h1{font-size:24px}
  .stat-badges{grid-template-columns:1fr}
  .stat-badge{flex-direction:row;align-items:baseline}
  .brand-name{font-size:13px}
  .brand-sub{font-size:10px}
  .btn{width:100%;padding:13px 20px}
  .nav-actions .btn-primary{width:auto;padding:10px 16px}
  .filter-bar{padding:16px 18px}
  .filter-count{margin-left:0}
  .post-card{border-radius:16px}
  .order-card{padding:22px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{font-size:12px}
}

/* roulang page: article */
:root{
  --bg-0:#070C15;--bg-1:#0C1422;--bg-2:#111C2E;
  --line:rgba(140,170,200,.14);--line-strong:rgba(160,200,220,.26);
  --ink-1:#E8F0F6;--ink-2:#A9BACC;--ink-3:#6F8398;
  --brand:#35C2A0;--brand-2:#7CE0C4;--accent:#E2A24C;--violet:#6E63E8;
  --ok:#3FBF8F;--warn:#E2A24C;--err:#E4675F;
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  --shadow:0 20px 44px -22px rgba(0,0,0,.7);
  --radius:18px;--radius-lg:24px;--radius-sm:12px;
  --container:1200px;
  --trans:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--ink-1);
  font-family:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--brand-2)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.dot{display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--ink-3);vertical-align:middle;margin:0 2px}
.text-link{color:var(--brand);text-underline-offset:4px;border-bottom:1px solid rgba(53,194,160,.4)}
.text-link:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}

/* ============ 顶栏与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,21,.72);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background var(--trans),box-shadow var(--trans);
}
.site-header.is-stuck{box-shadow:0 12px 32px -20px rgba(0,0,0,.9);background:rgba(7,12,21,.9)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--ink-1)}
.brand:hover{color:var(--ink-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,#35C2A0,#59D9B6 55%,#6E63E8);
  box-shadow:0 8px 20px -10px rgba(53,194,160,.9),inset 0 1px 0 rgba(255,255,255,.35);
  position:relative;
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;border:2px solid rgba(6,18,26,.7)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:600;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:15px;color:var(--ink-2);transition:color var(--trans),background var(--trans)}
.nav-links a:hover{color:var(--ink-1);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--brand-2);background:rgba(53,194,160,.12)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-1);border-radius:2px;transition:transform var(--trans),opacity var(--trans)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 步骤条 ============ */
.steps-bar{border-top:1px solid var(--line);background:rgba(9,15,26,.45)}
.steps{display:flex;align-items:center;padding:10px 0}
.step{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-3);transition:color var(--trans)}
.step:hover{color:var(--ink-1)}
.step-dot{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;border:1px solid var(--line-strong);color:var(--ink-3);background:var(--bg-2);transition:all var(--trans)}
.step.is-done .step-dot{background:rgba(53,194,160,.16);border-color:rgba(53,194,160,.5);color:var(--brand-2)}
.step.is-active .step-dot{background:var(--brand);border-color:var(--brand);color:#06121A;box-shadow:0 0 0 4px rgba(53,194,160,.18)}
.step.is-active{color:var(--ink-1)}
.step-line{width:64px;height:1px;background:var(--line);margin:0 14px}
.step.is-done .step-line{background:linear-gradient(90deg,var(--brand),rgba(53,194,160,.18))}

/* ============ 按钮与标签 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:14px 26px;border-radius:999px;transition:transform var(--trans),box-shadow var(--trans),background var(--trans),border-color var(--trans),color var(--trans);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#35C2A0,#59D9B6);color:#06121A;box-shadow:0 10px 30px -8px rgba(53,194,160,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(53,194,160,.7);color:#06121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink-1);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(124,224,196,.12);color:var(--ink-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.4;padding:5px 11px;border-radius:999px;color:var(--brand-2);background:rgba(53,194,160,.12);border:1px solid rgba(53,194,160,.3)}
.chip--amber{color:#F2C88A;background:rgba(226,162,76,.14);border-color:rgba(226,162,76,.34)}
.chip--ghost{color:var(--ink-2);background:rgba(255,255,255,.05);border-color:var(--line)}
.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);transition:border-color var(--trans),transform var(--trans),box-shadow var(--trans)}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow),0 0 0 1px rgba(53,194,160,.35)}

/* ============ 文章头 ============ */
.article-head{position:relative;padding:48px 0 44px;overflow:hidden;border-bottom:1px solid var(--line)}
.article-head-bg{position:absolute;inset:0;z-index:0}
.article-head-bg img{width:100%;height:100%;object-fit:cover;opacity:.3}
.article-head-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(640px 300px at 12% 0%,rgba(53,194,160,.22),transparent 70%),
    radial-gradient(520px 280px at 88% 10%,rgba(110,99,232,.2),transparent 72%),
    linear-gradient(180deg,rgba(7,12,21,.88) 0%,rgba(7,12,21,.95) 66%,var(--bg-0) 100%);
}
.article-head-inner{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--brand-2)}
.crumbs-current{color:var(--ink-2)}
.article-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.article-head h1{font-size:32px;line-height:1.42;font-weight:600;letter-spacing:-.01em;margin-top:16px;max-width:880px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-3)}
.article-meta span{font-variant-numeric:tabular-nums}
.article-cover{position:relative;margin:32px 0 0;aspect-ratio:21/9;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow);background:var(--bg-2)}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ============ 阅读辅助条 ============ */
.read-toolbar{position:sticky;top:112px;z-index:50;background:rgba(12,20,34,.94);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.read-toolbar-inner{display:flex;align-items:center;gap:20px;min-height:52px}
.read-progress{flex:1;height:4px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.read-progress-bar{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#35C2A0,#7CE0C4);box-shadow:0 0 12px rgba(53,194,160,.6);transition:width 120ms linear}
.read-tools{display:flex;align-items:center;gap:6px;flex-shrink:0}
.tool-btn{font-size:13px;color:var(--ink-2);padding:6px 12px;border-radius:999px;border:1px solid transparent;transition:all var(--trans)}
.tool-btn:hover{color:var(--ink-1);border-color:var(--line-strong);background:rgba(255,255,255,.05)}
.tool-btn[aria-expanded="true"]{color:var(--brand-2);background:rgba(53,194,160,.12);border-color:rgba(53,194,160,.3)}
.toc-panel{border-top:1px solid var(--line);background:rgba(17,28,46,.96);padding:14px 0 18px}
.toc-panel ol{list-style:none;margin:0;padding:0;display:grid;gap:8px;counter-reset:toc}
.toc-panel li{counter-increment:toc}
.toc-panel a{display:inline-flex;gap:10px;align-items:baseline;font-size:14px;color:var(--ink-2)}
.toc-panel a::before{content:counter(toc,decimal-leading-zero);color:var(--brand);font-size:12px;font-variant-numeric:tabular-nums}
.toc-panel a:hover{color:var(--brand-2)}

/* ============ 板块 ============ */
.section{padding:88px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:28px;line-height:1.3;font-weight:600;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:68ch}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;line-height:1;letter-spacing:.08em;color:var(--brand-2);padding:6px 12px;border-radius:999px;background:rgba(53,194,160,.1);border:1px solid rgba(53,194,160,.28);margin-bottom:16px}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}

/* ============ 要点卡 ============ */
.keypoints{padding:32px;border-radius:var(--radius-lg)}
.keypoints-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:22px}
.keypoints-head h2{font-size:20px;font-weight:600;color:var(--ink-1)}
.keypoints ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.keypoints li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:var(--ink-2);padding:14px 16px;border-radius:var(--radius-sm);background:rgba(255,255,255,.03);border:1px solid var(--line)}
.keypoints li b{color:var(--brand-2);font-weight:600;flex-shrink:0;font-variant-numeric:tabular-nums}

/* ============ 正文排版 ============ */
.article-body{padding-top:64px}
.prose{max-width:760px;margin:0 auto;font-size:16px;line-height:1.95;color:var(--ink-2);transition:font-size var(--trans)}
.prose--lg{font-size:17.5px}
.prose--sm{font-size:15px}
.prose h2{font-size:24px;line-height:1.4;font-weight:600;color:var(--ink-1);margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--brand)}
.prose h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-1);margin:32px 0 12px}
.prose h4{font-size:16px;font-weight:600;color:var(--ink-1);margin:24px 0 10px}
.prose p{margin:0 0 18px}
.prose strong{color:var(--ink-1);font-weight:600}
.prose a{color:var(--brand-2);text-decoration:underline;text-underline-offset:4px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 18px}
.prose li{margin:8px 0}
.prose li::marker{color:var(--brand)}
.prose blockquote{margin:26px 0;padding:18px 22px;background:var(--glass);border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-1);border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.prose blockquote p:last-child{margin-bottom:0}
.prose img,.prose figure img{border-radius:var(--radius);border:1px solid var(--line);margin:24px 0;width:100%;height:auto}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;line-height:1.7}
.prose .table-wrap{width:100%;overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(255,255,255,.02)}
.prose table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;color:var(--ink-2)}
.prose th{color:var(--ink-1);background:rgba(255,255,255,.03);font-weight:600}
.prose tr:last-child td{border-bottom:0}
.prose pre{margin:24px 0;padding:18px 20px;border-radius:var(--radius-sm);background:var(--bg-2);border:1px solid var(--line);overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:1.75;color:var(--ink-1)}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:var(--brand-2);background:rgba(53,194,160,.1);padding:2px 6px;border-radius:6px}
.prose pre code{background:none;padding:0;color:inherit}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ============ 空态 ============ */
.empty-state{max-width:520px;margin:0 auto;text-align:center;padding:44px 28px;background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.empty-icon{width:46px;height:46px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--accent);background:rgba(226,162,76,.14);border:1px solid rgba(226,162,76,.34)}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:14px}

/* ============ 作者名片 ============ */
.author-card{display:flex;flex-wrap:wrap;align-items:center;gap:22px;padding:28px 30px;border-radius:var(--radius-lg)}
.author-avatar{width:56px;height:56px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;color:#06121A;background:linear-gradient(135deg,#35C2A0,#7CE0C4);box-shadow:0 10px 24px -12px rgba(53,194,160,.9)}
.author-body{flex:1;min-width:220px}
.author-body h3{font-size:17px;font-weight:600;color:var(--ink-1)}
.author-body p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:6px}
.author-more{font-size:14px;color:var(--brand-2);border-bottom:1px solid rgba(124,224,196,.4);padding-bottom:2px;white-space:nowrap}

/* ============ 相关推荐 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{overflow:hidden;border-radius:var(--radius-lg);display:flex;flex-direction:column}
.post-card-media{display:block;aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.post-card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.post-card:hover .post-card-media img{transform:scale(1.04)}
.post-card-body{padding:20px 22px 24px}
.post-card-body h3{font-size:16px;line-height:1.55;font-weight:600}
.post-card-body h3 a{color:var(--ink-1)}
.post-card-body h3 a:hover{color:var(--brand-2)}
.post-card-meta{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12px;color:var(--ink-3)}
.post-card-meta span{font-variant-numeric:tabular-nums}

/* ============ 上下篇 ============ */
.pager{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pager-item{display:block;padding:22px 24px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);transition:all var(--trans)}
.pager-item:hover{border-color:var(--brand-2);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,194,160,.3)}
.pager-item span{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:8px}
.pager-item strong{font-size:15px;font-weight:600;color:var(--ink-1);line-height:1.6}
.pager-back{text-align:center;margin-top:26px;font-size:14px}

/* ============ 订阅 ============ */
.subscribe{padding:36px;border-radius:var(--radius-lg);display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:center}
.subscribe h2{font-size:26px;line-height:1.35;font-weight:600}
.subscribe p{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:46ch}
.subscribe-form{display:flex;flex-wrap:wrap;gap:12px}
.subscribe-field{flex:1 1 240px}
.subscribe-field input{width:100%;padding:14px 16px;border-radius:var(--radius-sm);background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink-1);outline:none;transition:border-color var(--trans),box-shadow var(--trans)}
.subscribe-field input::placeholder{color:var(--ink-3)}
.subscribe-field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(53,194,160,.15)}
.subscribe-form.is-error .subscribe-field input{border-color:var(--err);box-shadow:0 0 0 3px rgba(228,103,95,.14)}
.subscribe-form.is-ok .subscribe-field input{border-color:var(--ok);box-shadow:0 0 0 3px rgba(63,191,143,.15)}
.form-msg{margin-top:12px;font-size:13px;color:var(--ink-3);line-height:1.7}
.form-msg.is-error{color:var(--err)}
.form-msg.is-ok{color:var(--ok)}
.subscribe .btn-primary{flex-shrink:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--ink-2);font-size:14px;line-height:1.9;margin-top:16px;max-width:36ch}
.footer-col h4{font-size:14px;color:var(--ink-1);font-weight:600;letter-spacing:.04em;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col a{color:var(--ink-2);font-size:14px}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:44px;padding-top:22px;color:var(--ink-3);font-size:13px;line-height:1.8}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 22px}
}
@media (max-width:1023px){
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:rgba(9,15,26,.98);border-bottom:1px solid var(--line);
    padding:12px 24px 18px;box-shadow:0 24px 40px -28px rgba(0,0,0,.9);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 10px;font-size:15px}
  .nav-actions .btn-ghost{display:none}
  .read-toolbar{top:104px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .keypoints ul{grid-template-columns:1fr}
  .subscribe{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head h1{font-size:28px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .brand-name{font-size:13.5px}
  .brand-sub{font-size:10.5px}
  .steps{overflow-x:auto;padding:8px 0;scrollbar-width:none}
  .steps::-webkit-scrollbar{display:none}
  .step{flex:0 0 auto;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);margin-right:8px}
  .step-line{display:none}
  .article-head{padding:36px 0 34px}
  .article-head h1{font-size:25px;line-height:1.45}
  .article-cover{aspect-ratio:16/9;margin-top:24px}
  .read-toolbar-inner{min-height:48px;gap:12px}
  .read-tools{gap:2px}
  .tool-btn{padding:6px 8px;font-size:12px}
  .keypoints{padding:22px}
  .section{padding:56px 0}
  .section-head h2{font-size:23px}
  .grid-3{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .author-card{padding:22px}
  .subscribe{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .hero-actions,.btn{width:100%}
  .nav-actions{flex:1;justify-content:flex-end}
  .nav-actions .btn-primary{padding:9px 14px;font-size:13px;width:auto}
  .article-head h1{font-size:22px}
  .article-meta{font-size:12px;gap:8px}
  .card,.keypoints,.subscribe,.author-card{border-radius:16px}
  .prose h2{font-size:21px}
  .prose h3{font-size:18px}
  body{font-size:15px;line-height:1.8}
  .subscribe .btn-primary{width:100%}
}