/* ============ 设计令牌 ============ */
    :root{
      --brand:#f06918;
      --brand-dark:#cf5109;
      --brand-tint:#fff4ec;
      --ink:#07224A;
      --ink-2:#0b2c5e;
      --text:#1e293b;
      --muted:#5a6b82;
      --line:#e6eaf1;
      --bg:#ffffff;
      --bg-soft:#f8fafc;
      --radius:14px;
      --shadow:0 1px 2px rgba(7,34,74,.04), 0 8px 24px -12px rgba(7,34,74,.12);
      --shadow-lg:0 2px 4px rgba(7,34,74,.04), 0 18px 40px -18px rgba(7,34,74,.22);
      --font:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
      --wrap:1180px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
    @media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
    body{
      margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
      color:var(--text);background:var(--bg);
      -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
    }
    img{display:block;max-width:100%;height:auto;border:0}
    a{color:inherit;text-decoration:none}
    h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure{margin:0}
    ul,ol{padding:0;list-style:none}
    button,input,select,textarea{font:inherit;color:inherit}
    :focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:4px}

    .wrap{width:min(100% - 2.5rem, var(--wrap));margin-inline:auto}
    .skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:.7rem 1.2rem;z-index:999}
    .skip:focus{left:8px;top:8px}

    /* ============ 顶部导航 ============ */
    .site-header{
      position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
      backdrop-filter:saturate(180%) blur(12px);
      border-bottom:1px solid var(--line);
    }
    .header-inner{display:flex;align-items:center;gap:1.5rem;min-height:66px}
    .logo{display:flex;align-items:center;gap:.6rem;flex-shrink:0}
    .logo img{height:38px;width:auto}
    .nav{margin-left:auto}
    .nav ul{display:flex;align-items:center;gap:1.75rem}
    .nav a{font-size:.94rem;font-weight:500;color:var(--ink-2);position:relative;padding:.35rem 0;white-space:nowrap}
    .nav a::after{
      content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
      background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
    }
    .nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
    .nav a:hover{color:var(--brand)}
    .header-cta{
      display:inline-flex;align-items:center;gap:.5rem;flex-shrink:0;
      background:var(--brand);color:#fff;font-weight:600;font-size:.94rem;
      padding:.6rem 1.15rem;border-radius:999px;transition:background .2s ease,transform .2s ease;
    }
    .header-cta:hover{background:var(--brand-dark);transform:translateY(-1px)}
    .header-cta svg{width:16px;height:16px;fill:currentColor;flex-shrink:0}
    .burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
    .burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
    .burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s}
    .burger span::before{top:-6px}.burger span::after{top:6px}

    /* ============ Hero ============ */
    .hero{
      position:relative;isolation:isolate;color:#fff;overflow:hidden;
      background:
      radial-gradient(ellipse 900px 520px at 82% -10%,rgba(240,105,24,.28),transparent 62%),
      radial-gradient(ellipse 700px 420px at 8% 108%,rgba(56,120,214,.24),transparent 64%),
      linear-gradient(118deg,#051a38 0%,#07224A 46%,#0b2c5e 100%);
    }
    /* 首屏右侧信息卡 */
    .hero-card{
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.16);
      border-radius:18px;padding:clamp(1.4rem,2.5vw,1.9rem);
      backdrop-filter:blur(10px);
      box-shadow:0 24px 60px -30px rgba(0,0,0,.6);
    }
    .hero-card h2{
      font-size:.82rem;font-weight:700;letter-spacing:.1em;color:#ffb37a;
      text-transform:uppercase;margin-bottom:1.1rem;
    }
    .hero-card dl{display:grid;gap:.95rem;margin:0}
    .hero-card dt{font-size:.76rem;color:#93a8c4;margin-bottom:.15rem}
    .hero-card dd{font-size:.95rem;font-weight:600;color:#fff;line-height:1.55}
    .hero-card dd a{color:#fff}
    .hero-card dd a:hover{color:#ffb37a}
    .hero-card .big-tel{font-size:1.3rem;letter-spacing:.02em;color:#ffb37a}
    .hero-card hr{border:0;border-top:1px solid rgba(255,255,255,.13);margin:1.1rem 0 .85rem}
    .hero-card .tip{font-size:.78rem;color:#93a8c4;line-height:1.75}

    .hero::before{
      content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
      background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
      background-size:64px 64px;
      mask-image:radial-gradient(ellipse 78% 72% at 50% 34%,#000 30%,transparent 78%);
      -webkit-mask-image:radial-gradient(ellipse 78% 72% at 50% 34%,#000 30%,transparent 78%);
    }
    .hero-inner{
      padding:clamp(3.2rem,7vw,5.5rem) 0 clamp(3rem,6vw,4.5rem);
      display:grid;grid-template-columns:1.12fr .88fr;
      gap:clamp(2rem,5vw,4rem);align-items:center;
    }
    .hero-eyebrow{
      display:inline-flex;align-items:center;gap:.5rem;font-size:.82rem;font-weight:600;
      letter-spacing:.08em;color:#ffd9be;background:rgba(240,105,24,.16);
      border:1px solid rgba(240,105,24,.38);padding:.35rem .85rem;border-radius:999px;margin-bottom:1.4rem;
    }
    .hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
    .hero h1{
      font-size:clamp(1.75rem,4.2vw,3rem);line-height:1.28;font-weight:800;
      letter-spacing:-.01em;margin-bottom:1.1rem;max-width:20ch;
    }
    .hero h1 em{font-style:normal;color:#ffb37a}
    .hero-lead{font-size:clamp(1rem,1.6vw,1.14rem);line-height:1.85;color:#d7e2f0;max-width:56ch;margin-bottom:2rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:.85rem}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
      padding:.85rem 1.6rem;border-radius:999px;font-weight:600;font-size:1rem;
      border:1px solid transparent;cursor:pointer;transition:all .2s ease;text-align:center;
    }
    .btn svg{width:18px;height:18px;fill:currentColor}
    .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -12px rgba(240,105,24,.9)}
    .btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.32)}
    .btn-ghost:hover{background:rgba(255,255,255,.16)}
    .btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow)}
    .btn-outline:hover{border-color:var(--brand);color:var(--brand-dark)}

    /* 关键事实条 */
    .facts-bar{background:var(--ink-2);color:#fff;border-top:1px solid rgba(255,255,255,.08)}
    .facts-bar ul{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.08)}
    .facts-bar li{background:var(--ink-2);padding:1.15rem 1rem;text-align:center}
    .facts-bar b{display:block;font-size:clamp(1.15rem,2.2vw,1.55rem);font-weight:800;color:#ffb37a;line-height:1.3}
    .facts-bar span{display:block;font-size:.82rem;color:#a9bcd6;margin-top:.15rem}

    /* ============ 通用区块 ============ */
    .section{padding:clamp(3rem,6vw,5rem) 0}
    .section.soft{background:var(--bg-soft)}
    .section-head{max-width:62ch;margin-bottom:clamp(1.75rem,3.5vw,2.75rem)}
    .section-head.center{margin-inline:auto;text-align:center}
    .kicker{
      display:block;font-size:.8rem;font-weight:700;letter-spacing:.1em;
      text-transform:uppercase;color:var(--brand-dark);margin-bottom:.6rem;
    }
    .section h2{
      font-size:clamp(1.45rem,3vw,2.1rem);line-height:1.35;font-weight:800;
      color:var(--ink);letter-spacing:-.005em;
    }
    .section-sub{margin-top:.75rem;color:var(--muted);font-size:1rem;line-height:1.85}

    /* ============ 事实卡（GEO 核心：可被直接抽取） ============ */
    .fact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
    .fact-card{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:1.15rem 1.25rem;box-shadow:var(--shadow);
    }
    .fact-card dt{font-size:.8rem;font-weight:600;color:var(--muted);letter-spacing:.03em;margin-bottom:.3rem}
    .fact-card dd{font-size:.98rem;font-weight:600;color:var(--ink);line-height:1.6}
    .fact-card dd a{color:var(--brand-dark)}
    .fact-card dd a:hover{text-decoration:underline}

    /* ============ 痛点 ============ */
    .pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:.9rem}
    .pain-item{
      display:flex;align-items:flex-start;gap:.75rem;background:#fff;
      border:1px solid var(--line);border-left:3px solid var(--brand);
      border-radius:10px;padding:1rem 1.1rem;
    }
    .pain-item i{
      flex-shrink:0;width:20px;height:20px;margin-top:.3rem;border-radius:50%;
      background:var(--brand-tint);color:var(--brand-dark);font-style:normal;
      font-size:.72rem;font-weight:800;display:grid;place-items:center;
    }
    .pain-item p{font-size:.94rem;line-height:1.7;color:var(--text)}

    /* ============ 双轨体系 ============ */
    .track-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.25rem}
    .track{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:clamp(1.4rem,3vw,2rem);box-shadow:var(--shadow);position:relative;overflow:hidden;
    }
    .track::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--brand)}
    .track.alt::before{background:var(--ink-2)}
    .track h3{font-size:1.2rem;font-weight:800;color:var(--ink);margin-bottom:.6rem}
    .track p{color:var(--muted);font-size:.95rem;line-height:1.85}
    .track ul{margin-top:1rem;display:grid;gap:.5rem}
    .track li{position:relative;padding-left:1.3rem;font-size:.92rem;color:var(--text)}
    .track li::before{
      content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;
      border-radius:2px;background:var(--brand);transform:rotate(45deg);
    }

    /* ============ 方法课 ============ */
    .course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:1.1rem}
    .course{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:1.4rem;box-shadow:var(--shadow);display:flex;flex-direction:column;
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .course:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#f6c4a5}
    @media (min-width:1100px){.course-grid>.course:last-child{grid-column:2/3}}
    .course-num{font-size:.75rem;font-weight:800;color:var(--brand);letter-spacing:.08em;margin-bottom:.4rem}
    .course h3{font-size:1.06rem;font-weight:700;color:var(--ink);line-height:1.5;margin-bottom:.9rem}
    .course dl{display:grid;gap:.7rem;font-size:.9rem;line-height:1.75}
    .course dt{font-weight:700;color:var(--ink-2);font-size:.82rem;margin-bottom:.1rem}
    .course dd{color:var(--muted);margin:0}

    /* ============ 学段表（AI 抽取友好） ============ */
    .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:680px;font-size:.92rem}
    caption{caption-side:bottom;padding:.9rem 1.1rem;font-size:.82rem;color:var(--muted);text-align:left;border-top:1px solid var(--line)}
    thead th{
      background:var(--ink);color:#fff;font-weight:600;text-align:left;
      padding:.9rem 1.1rem;font-size:.86rem;letter-spacing:.02em;white-space:nowrap;
    }
    tbody td{padding:.95rem 1.1rem;border-top:1px solid var(--line);color:var(--text);vertical-align:top;line-height:1.7}
    tbody tr:nth-child(even){background:#fbfcfe}
    tbody th{
      padding:.95rem 1.1rem;border-top:1px solid var(--line);text-align:left;
      font-weight:700;color:var(--ink);white-space:nowrap;background:var(--brand-tint);
    }

    /* ============ 五维闭环 ============ */
    .steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1rem;counter-reset:step}
    .step{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:1.35rem 1.2rem;position:relative;box-shadow:var(--shadow);
    }
    .step-num{
      display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
      background:var(--ink);color:#fff;font-weight:800;font-size:.95rem;margin-bottom:.85rem;
    }
    .step h3{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:.35rem}
    .step p{font-size:.87rem;color:var(--muted);line-height:1.7}

    /* ============ 数据 ============ */
    .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}
    .stat{background:var(--ink);color:#fff;border-radius:var(--radius);padding:1.4rem 1rem;text-align:center}
    .stat b{display:block;font-size:clamp(1.5rem,3vw,2rem);font-weight:800;color:#ffb37a;line-height:1.2}
    .stat span{display:block;font-size:.83rem;color:#a9bcd6;margin-top:.3rem}

    /* ============ 教师 ============ */
    .teacher-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.1rem}
    .teacher{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:1.25rem;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.85rem;
      transition:border-color .2s ease,box-shadow .2s ease;
    }
    .teacher:hover{border-color:#f6c4a5;box-shadow:var(--shadow-lg)}
    .teacher-head{display:flex;gap:.9rem;align-items:center}
    .teacher-head img{width:62px;height:62px;border-radius:50%;object-fit:cover;flex-shrink:0;background:var(--bg-soft)}
    .teacher-name{font-size:1rem;font-weight:700;color:var(--ink);line-height:1.45}
    .teacher-tag{
      display:inline-block;margin-left:.4rem;font-size:.72rem;font-weight:700;
      background:var(--brand-tint);color:var(--brand-dark);padding:.1rem .45rem;
      border-radius:5px;vertical-align:middle;
    }
    .teacher-meta{font-size:.82rem;color:var(--muted);margin-top:.2rem;line-height:1.6}
    .teacher p{font-size:.88rem;color:var(--muted);line-height:1.8}
    .teacher p strong{color:var(--ink-2);font-weight:700}

    /* ============ FAQ ============ */
    .faq{max-width:820px;margin-inline:auto;display:grid;gap:.7rem}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:12px;
      box-shadow:var(--shadow);overflow:hidden;transition:border-color .2s ease;
    }
    .faq details[open]{border-color:#f6c4a5}
    .faq summary{
      cursor:pointer;padding:1.05rem 1.25rem;font-weight:700;color:var(--ink);
      font-size:.98rem;line-height:1.6;display:flex;justify-content:space-between;
      align-items:center;gap:1rem;list-style:none;
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq summary::after{
      content:"+";font-size:1.35rem;font-weight:400;color:var(--brand);
      flex-shrink:0;line-height:1;transition:transform .2s ease;
    }
    .faq details[open] summary::after{content:"−"}
    .faq .answer{padding:0 1.25rem 1.15rem;font-size:.93rem;color:var(--text);line-height:1.9}
    .faq .answer p+p{margin-top:.6rem}

    /* ============ 文章 ============ */
    .article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.1rem}
    .article{
      display:flex;gap:1rem;background:#fff;border:1px solid var(--line);
      border-radius:var(--radius);padding:.85rem;box-shadow:var(--shadow);
      transition:border-color .2s ease,transform .2s ease;
    }
    .article:hover{border-color:#f6c4a5;transform:translateY(-2px)}
    .article img{width:96px;height:96px;object-fit:cover;border-radius:9px;flex-shrink:0;background:var(--bg-soft)}
    .article-body{min-width:0;display:flex;flex-direction:column}
    .article h3{font-size:.94rem;font-weight:700;color:var(--ink);line-height:1.6;margin-bottom:.35rem}
    .article time{font-size:.76rem;color:var(--muted);margin-bottom:.35rem}
    .article p{font-size:.82rem;color:var(--muted);line-height:1.65;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}

    /* ============ 预约 ============ */
    .booking{background:var(--ink);color:#fff;position:relative;overflow:hidden}
    .booking::before{
      content:"";position:absolute;right:-8%;top:-30%;width:420px;height:420px;border-radius:50%;
      background:radial-gradient(circle,rgba(240,105,24,.3),transparent 68%);pointer-events:none;
    }
    .booking-inner{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
    .booking h2{color:#fff}
    .booking .section-sub{color:#b9cae0}
    .gifts{display:grid;gap:.6rem;margin:1.5rem 0}
    .gift{
      display:flex;align-items:center;gap:.7rem;background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:.7rem 1rem;font-size:.9rem;
    }
    .gift b{color:#ffb37a;font-weight:700;margin-left:auto;white-space:nowrap;font-size:.85rem}
    .urgency{font-size:.85rem;color:#ffd9be;margin-bottom:1.25rem}
    .form-card{background:#fff;border-radius:16px;padding:clamp(1.4rem,3vw,2rem);box-shadow:var(--shadow-lg);color:var(--text)}
    .form-card h3{font-size:1.1rem;font-weight:800;color:var(--ink);margin-bottom:1.15rem}
    .field{margin-bottom:.9rem}
    .field label{display:block;font-size:.84rem;font-weight:600;color:var(--ink-2);margin-bottom:.35rem}
    .field input{
      width:100%;padding:.75rem .9rem;border:1px solid var(--line);border-radius:10px;
      background:#fbfcfe;font-size:.95rem;transition:border-color .18s ease,background .18s ease;
    }
    .field input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(240,105,24,.12)}
    .form-card .btn{width:100%;margin-top:.35rem}
    .form-note{font-size:.76rem;color:var(--muted);margin-top:.75rem;text-align:center;line-height:1.6}

    /* ============ 页脚 ============ */
    .site-footer{background:#051a38;color:#93a8c4;padding:clamp(2.5rem,5vw,3.5rem) 0 0;font-size:.88rem}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:2rem;padding-bottom:2.25rem}
    .site-footer h2,.site-footer h3{font-size:.85rem;font-weight:700;color:#fff;margin-bottom:.85rem;letter-spacing:.04em}
    .site-footer ul{display:grid;gap:.5rem}
    .site-footer a:hover{color:#ffb37a}
    .footer-brand img{height:42px;width:auto;margin-bottom:1rem;background:#fff;padding:5px 9px;border-radius:9px;filter:none}
    .footer-brand p{line-height:1.85;max-width:34ch}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.1);padding:1.25rem 0;
      display:flex;flex-wrap:wrap;gap:.75rem 1.5rem;justify-content:space-between;font-size:.82rem;
    }
    .footer-bottom a{color:#93a8c4}

    /* ============ 移动端悬浮条 ============ */
    .mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;gap:.6rem;padding:.6rem .75rem calc(.6rem + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);border-top:1px solid var(--line);backdrop-filter:blur(8px)}
    .mobile-bar .btn{flex:1;padding:.75rem 1rem;font-size:.92rem}

    /* ============ 响应式 ============ */
    @media (max-width:1000px){
      .nav{display:none}
      .hero-inner{grid-template-columns:1fr;gap:2rem}
      .hero-card{max-width:520px}
      .nav.open{
        display:block;position:absolute;left:0;right:0;top:100%;
        background:#fff;border-bottom:1px solid var(--line);padding:1rem 1.25rem 1.5rem;
        box-shadow:var(--shadow-lg);
      }
      .nav.open ul{flex-direction:column;align-items:stretch;gap:0}
      .nav.open li{border-bottom:1px solid var(--line)}
      .nav.open li:last-child{border-bottom:0}
      .nav.open a{display:block;padding:.85rem .25rem;font-size:1rem}
      .burger{display:flex;order:3}
      .header-cta{order:2;margin-left:auto;padding:.55rem .95rem;font-size:.88rem}
      .booking-inner{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:720px){
      .facts-bar ul{grid-template-columns:1fr 1fr}
      .hero h1{max-width:none}
      .hero-actions .btn{flex:1 1 100%}
      .header-cta span{display:none}
      .header-cta{padding:.6rem .8rem}
      .mobile-bar{display:flex}
      body{padding-bottom:72px}
      .footer-grid{grid-template-columns:1fr}
      .article img{width:76px;height:76px}
      .teacher p{font-size:.85rem}
    }
    @media (min-width:1001px){
      .nav.open{display:block}
    }
    @media print{
      .site-header,.mobile-bar,.booking .form-card{display:none}
      body{font-size:12pt}
      .hero{background:#fff;color:#000}
      .hero::after{display:none}
    }