:root {
    --ink: #202822;
    --deep: #18362b;
    --green: #285646;
    --green-soft: #e4ede5;
    --cream: #f7f1e6;
    --sand: #e7d8bd;
    --mist: #f9fbf7;
    --gray: #5c665f;
    --line: rgba(32, 40, 34, .12);
    --shadow: 0 18px 50px rgba(24, 54, 43, .12);
    --radius: 26px;
    --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: linear-gradient(180deg, #fbf7ee 0%, #f7f1e6 38%, #f9fbf7 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(var(--max), calc(100% - 36px)); margin: 0 auto; }
.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    background: var(--deep);
    color: #fff;
    padding: 10px 14px;
    border-radius: 12px;
}
.skip-link:focus { top: 14px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(18px);
    background: rgba(247, 241, 230, .84);
    border-bottom: 1px solid var(--line);
}
.nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; color: var(--deep); letter-spacing: .06em; }
.brand-mark {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--deep);
    color: var(--cream);
    box-shadow: 0 10px 24px rgba(24,54,43,.18);
}
.brand-text { font-size: 20px; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
    padding: 10px 12px;
    border-radius: 999px;
    color: #354239;
    font-size: 15px;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { background: rgba(40, 86, 70, .12); color: var(--deep); }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--deep); margin: 5px 0; border-radius: 2px; }
.hero {
    position: relative;
    padding: 78px 0 62px;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 12% 18%, rgba(40,86,70,.18), transparent 32%),
        radial-gradient(circle at 86% 10%, rgba(231,216,189,.75), transparent 28%),
        linear-gradient(135deg, rgba(255,255,255,.18), rgba(255,255,255,0));
    pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.eyebrow { color: var(--green); font-weight: 700; letter-spacing: .12em; font-size: 14px; }
h1, h2, h3 { line-height: 1.2; color: var(--deep); margin: 0; }
h1 { font-size: clamp(36px, 5vw, 72px); letter-spacing: -.045em; margin: 16px 0 22px; }
.hero p { font-size: 18px; color: var(--gray); max-width: 690px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid rgba(24,54,43,.2);
}
.btn-primary { background: var(--deep); color: var(--cream); box-shadow: 0 14px 34px rgba(24,54,43,.2); }
.btn-ghost { background: rgba(255,255,255,.5); color: var(--deep); }
.hero-card {
    position: relative;
    border: 1px solid rgba(24,54,43,.13);
    border-radius: 34px;
    background: rgba(255,255,255,.52);
    padding: 18px;
    box-shadow: var(--shadow);
}
.hero-card img { border-radius: 24px; width: 100%; }
.hero-note {
    position: absolute;
    left: 36px;
    right: 36px;
    bottom: 36px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(247, 241, 230, .86);
    border: 1px solid rgba(24,54,43,.13);
}
.hero-note strong { display: block; color: var(--deep); }
.section { padding: 72px 0; }
.section-soft { background: rgba(255,255,255,.42); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 32px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 44px); margin-bottom: 14px; letter-spacing: -.025em; }
.section-head p { color: var(--gray); margin: 0; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,.68);
    box-shadow: 0 12px 32px rgba(24,54,43,.08);
    padding: 24px;
}
.card h3 { font-size: 21px; margin: 12px 0 10px; }
.card p { color: var(--gray); margin: 0; }
.card-icon { width: 56px; height: 56px; border-radius: 18px; display: grid; place-items: center; background: var(--green-soft); color: var(--green); font-weight: 800; }
.media-card { overflow: hidden; padding: 0; }
.media-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-bottom: 1px solid var(--line); }
.media-body { padding: 22px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tag { display: inline-flex; align-items: center; border-radius: 999px; padding: 5px 10px; background: rgba(40,86,70,.1); color: var(--green); font-size: 13px; font-weight: 700; }
.duration { background: rgba(32,40,34,.08); color: var(--gray); }
.path { display: grid; gap: 16px; position: relative; }
.path::before { content: ""; position: absolute; left: 25px; top: 12px; bottom: 12px; width: 2px; background: rgba(40,86,70,.18); }
.path-step { position: relative; display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: start; }
.step-num { width: 52px; height: 52px; border-radius: 18px; background: var(--deep); color: var(--cream); display: grid; place-items: center; font-weight: 800; z-index: 1; }
.step-box { border: 1px solid var(--line); background: rgba(255,255,255,.7); border-radius: 24px; padding: 20px; }
.step-box h3 { margin-bottom: 8px; }
.faq { display: grid; gap: 14px; }
details { border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.68); padding: 18px 20px; }
summary { cursor: pointer; font-weight: 800; color: var(--deep); }
details p { color: var(--gray); margin-bottom: 0; }
.banner {
    border-radius: 34px;
    border: 1px solid rgba(24,54,43,.12);
    padding: 42px;
    background: linear-gradient(135deg, rgba(24,54,43,.95), rgba(40,86,70,.86)), url('/assets/img/knowledge-map.svg') center/cover;
    color: var(--cream);
}
.banner h2 { color: var(--cream); font-size: clamp(28px, 4vw, 48px); margin-bottom: 14px; }
.banner p { color: rgba(247,241,230,.82); max-width: 780px; }
.kv-list { display: grid; gap: 12px; }
.kv { display: flex; gap: 10px; align-items: flex-start; color: var(--gray); }
.kv::before { content: ""; flex: 0 0 9px; width: 9px; height: 9px; margin-top: 11px; border-radius: 50%; background: var(--green); }
.topic-map { min-height: 460px; border-radius: 34px; border: 1px solid var(--line); background: rgba(255,255,255,.62); padding: 20px; display: grid; place-items: center; }
.topic-map img { width: min(780px, 100%); }
.contact-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 22px; }
.form { display: grid; gap: 14px; }
.form label { font-weight: 700; color: var(--deep); }
.form input, .form textarea, .form select {
    width: 100%; border: 1px solid var(--line); background: rgba(255,255,255,.8); border-radius: 16px; min-height: 48px; padding: 10px 14px; font: inherit; color: var(--ink);
}
.form textarea { min-height: 140px; resize: vertical; }
.form-note { color: var(--gray); font-size: 14px; }
.notice { border-left: 4px solid var(--green); background: rgba(40,86,70,.08); padding: 16px 18px; border-radius: 16px; color: var(--gray); }
.site-footer { background: #17251f; color: rgba(247,241,230,.82); padding: 52px 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr 1fr; gap: 34px; }
.footer-brand { font-size: 22px; font-weight: 900; color: var(--cream); margin-bottom: 10px; }
.site-footer h2 { color: var(--cream); font-size: 18px; margin-bottom: 12px; }
.site-footer a { display: block; margin: 8px 0; color: rgba(247,241,230,.78); }
.site-footer p { margin: 0 0 8px; }
.page-hero { padding: 66px 0 48px; border-bottom: 1px solid var(--line); }
.page-hero .eyebrow { margin-bottom: 14px; }
.page-hero h1 { font-size: clamp(34px, 4vw, 58px); margin: 0 0 18px; }
.page-hero p { max-width: 820px; color: var(--gray); font-size: 18px; }
.stat-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 30px; }
.stat { padding: 20px; border-radius: 24px; border: 1px solid var(--line); background: rgba(255,255,255,.6); }
.stat strong { display: block; font-size: 30px; color: var(--deep); }
.stat span { color: var(--gray); }
.pillbar { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 0; }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; background: rgba(255,255,255,.58); color: var(--green); font-weight: 700; }
.table-like { display: grid; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; }
.row { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 12px; padding: 16px 18px; background: rgba(255,255,255,.66); border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.row strong { color: var(--deep); }
@media (max-width: 980px) {
    .hero-grid, .grid-2, .grid-3, .grid-4, .contact-panel, .footer-grid { grid-template-columns: 1fr; }
    .main-nav {
        position: absolute;
        left: 18px;
        right: 18px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: rgba(247,241,230,.98);
        box-shadow: var(--shadow);
    }
    .main-nav.is-open { display: flex; }
    .nav-toggle { display: block; }
    .main-nav a { padding: 12px 14px; }
    .hero { padding-top: 48px; }
    .hero-note { position: static; margin-top: 14px; }
    .stat-strip { grid-template-columns: 1fr; }
    .row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .container { width: min(100% - 26px, var(--max)); }
    .section { padding: 52px 0; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; }
    .banner { padding: 28px; }
    .card, .media-body { padding: 20px; }
}