:root {
    --ink: #23332d;
    --deep: #10251f;
    --green: #245b4a;
    --green-soft: #dbe7df;
    --sand: #f6f0e4;
    --paper: #fffaf0;
    --muted: #68756f;
    --line: rgba(36, 91, 74, .18);
    --shadow: 0 24px 70px rgba(16, 37, 31, .14);
    --radius-xl: 32px;
    --radius-lg: 22px;
    --radius-md: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: linear-gradient(180deg, #fbf7ee 0%, #f7f0e5 48%, #fffaf0 100%);
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    padding: 12px clamp(18px, 5vw, 72px);
    background: rgba(255, 250, 240, .88);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .02em; }
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    color: var(--paper);
    background: radial-gradient(circle at 35% 28%, #6d947f 0, #245b4a 46%, #10251f 100%);
    border-radius: 50%;
    box-shadow: 0 12px 32px rgba(36, 91, 74, .25);
}
.brand-name { color: var(--deep); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    color: #3a4a44;
    font-size: 15px;
}
.main-nav a:hover, .main-nav a.active { background: var(--green); color: #fffaf0; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 14px; background: var(--green); }
.nav-toggle span { display: block; height: 2px; width: 20px; margin: 5px auto; background: #fffaf0; }
main { overflow: hidden; }
.section, .hero, .page-hero { padding: clamp(58px, 8vw, 110px) clamp(18px, 5vw, 72px); }
.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
    align-items: center;
    gap: clamp(34px, 6vw, 86px);
    min-height: 720px;
    background:
      radial-gradient(circle at 12% 12%, rgba(36,91,74,.13), transparent 28%),
      linear-gradient(135deg, rgba(246,240,228,.92), rgba(255,250,240,.98));
}
.eyebrow { color: var(--green); font-weight: 700; letter-spacing: .16em; font-size: 13px; text-transform: uppercase; }
h1, h2, h3 { color: var(--deep); line-height: 1.22; margin: 0; }
h1 { font-size: clamp(42px, 7vw, 82px); letter-spacing: -.05em; }
h2 { font-size: clamp(30px, 4vw, 52px); letter-spacing: -.03em; }
h3 { font-size: clamp(20px, 2vw, 26px); }
p { margin: 0; color: var(--muted); }
.lead { margin-top: 24px; font-size: clamp(18px, 2vw, 22px); max-width: 720px; color: #4b5e55; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid var(--green);
}
.btn.primary { background: var(--green); color: #fffaf0; }
.btn.secondary { background: transparent; color: var(--green); }
.hero-visual, .page-visual {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: #e7ecdf;
    box-shadow: var(--shadow);
}
.hero-visual::after, .page-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255,255,255,.56);
    border-radius: inherit;
    pointer-events: none;
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 38px;
}
.stat-card {
    padding: 18px;
    background: rgba(255,250,240,.72);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
}
.stat-card strong { display: block; font-size: 26px; color: var(--deep); }
.stat-card span { display: block; color: var(--muted); font-size: 14px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
.section-head p { max-width: 680px; }
.grid { display: grid; gap: 22px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card, .feature-card, .faq-item, .path-card, .video-card {
    background: rgba(255,250,240,.82);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: 0 18px 40px rgba(16,37,31,.06);
}
.card, .feature-card, .path-card { padding: 28px; }
.card img, .video-card img { width: 100%; border-radius: 18px; margin-bottom: 18px; background: #e9efe5; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tag {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 11px;
    border-radius: 999px;
    background: var(--green-soft);
    color: var(--green);
    font-size: 13px;
    font-weight: 700;
}
.meta-row { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; color: var(--muted); font-size: 14px; }
.feature-card { display: flex; flex-direction: column; gap: 16px; }
.feature-icon { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: var(--green-soft); color: var(--green); font-weight: 800; }
.band {
    margin: 0 clamp(18px, 5vw, 72px);
    padding: clamp(38px, 6vw, 72px);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #10251f, #245b4a);
    color: #fffaf0;
    overflow: hidden;
    position: relative;
}
.band::before {
    content: "";
    position: absolute;
    width: 360px;
    height: 360px;
    right: -130px;
    top: -150px;
    border-radius: 50%;
    background: rgba(255,250,240,.13);
}
.band h2, .band h3 { color: #fffaf0; }
.band p { color: rgba(255,250,240,.76); }
.timeline { display: grid; gap: 18px; margin-top: 32px; }
.timeline-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 20px;
    align-items: start;
    padding: 22px;
    border-radius: var(--radius-md);
    background: rgba(255,250,240,.08);
    border: 1px solid rgba(255,250,240,.16);
}
.timeline-item span { color: #dfe8d9; font-weight: 800; }
.video-card { overflow: hidden; }
.video-content { padding: 0 22px 24px; }
.video-thumb { position: relative; }
.play-dot {
    position: absolute;
    left: 20px;
    bottom: 20px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255,250,240,.92);
}
.play-dot::before {
    content: "";
    position: absolute;
    left: 21px;
    top: 16px;
    border-left: 14px solid var(--green);
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
}
.page-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 480px);
    gap: clamp(28px, 5vw, 70px);
    align-items: center;
    background: linear-gradient(180deg, rgba(219,231,223,.62), transparent);
}
.page-hero h1 { font-size: clamp(38px, 5.6vw, 68px); }
.kv-list { display: grid; gap: 14px; margin-top: 28px; }
.kv-list li {
    list-style: none;
    padding: 16px 18px;
    border-radius: var(--radius-md);
    background: rgba(255,250,240,.76);
    border: 1px solid var(--line);
    color: var(--muted);
}
.kv-list strong { color: var(--green); }
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.filter-bar button {
    border: 1px solid var(--line);
    background: rgba(255,250,240,.8);
    border-radius: 999px;
    padding: 10px 16px;
    color: var(--green);
    cursor: pointer;
    font-weight: 700;
}
.filter-bar button.active { background: var(--green); color: #fffaf0; }
.path-card { position: relative; min-height: 260px; }
.path-card .step { font-size: 14px; color: var(--green); font-weight: 800; }
.path-card::before {
    content: "";
    position: absolute;
    right: 24px;
    top: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px dashed var(--green);
}
.quote {
    padding: 34px;
    border-left: 5px solid var(--green);
    background: rgba(255,250,240,.84);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.faq-list { display: grid; gap: 16px; }
.faq-item { padding: 24px; }
.faq-item h3 { margin-bottom: 10px; }
.contact-card { padding: 30px; border-radius: var(--radius-lg); background: rgba(255,250,240,.86); border: 1px solid var(--line); }
.form-grid { display: grid; gap: 16px; margin-top: 22px; }
label { display: grid; gap: 8px; color: var(--deep); font-weight: 700; }
input, textarea, select {
    width: 100%;
    border: 1px solid var(--line);
    background: #fffdf7;
    color: var(--ink);
    border-radius: 14px;
    padding: 13px 14px;
    font: inherit;
}
textarea { min-height: 138px; resize: vertical; }
.site-footer { padding: 56px clamp(18px, 5vw, 72px); background: #10251f; color: #fffaf0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; max-width: 1280px; margin: 0 auto; }
.site-footer p, .site-footer a { color: rgba(255,250,240,.72); }
.site-footer a { display: block; margin-top: 8px; }
.footer-title { display: block; color: #fffaf0; font-weight: 800; margin-bottom: 10px; }
.domain-line { word-break: break-all; }
@media (max-width: 980px) {
    .hero, .page-hero, .grid.two { grid-template-columns: 1fr; }
    .grid.three, .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero { min-height: auto; }
    .main-nav {
        position: fixed;
        left: 18px;
        right: 18px;
        top: 82px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        background: #fffaf0;
        border: 1px solid var(--line);
        border-radius: 22px;
        box-shadow: var(--shadow);
    }
    .main-nav.open { display: flex; }
    .nav-toggle { display: block; }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .site-header { min-height: 68px; }
    .brand-name { display: none; }
    .hero-stats, .grid.three, .grid.four { grid-template-columns: 1fr; }
    .section-head { display: block; }
    .section-head p { margin-top: 14px; }
    .timeline-item { grid-template-columns: 1fr; }
    .band { margin: 0 16px; padding: 30px 20px; }
    .section, .hero, .page-hero { padding-left: 16px; padding-right: 16px; }
}