:root {
    --cream: #fff8ec;
    --cream-2: #fffdf7;
    --navy: #14213d;
    --navy-2: #23385f;
    --orange: #ff8a3d;
    --orange-2: #ffb46d;
    --purple: #c8b6ff;
    --purple-2: #efe8ff;
    --ink: #1e2742;
    --muted: #66708a;
    --line: rgba(20, 33, 61, .12);
    --card: rgba(255, 255, 255, .76);
    --shadow: 0 22px 60px rgba(20, 33, 61, .12);
    --radius: 28px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 12% 10%, rgba(255, 180, 109, .35), transparent 28%),
        radial-gradient(circle at 86% 0%, rgba(200, 182, 255, .46), transparent 34%),
        linear-gradient(180deg, var(--cream), #f7f3ff 58%, #fffdf7);
    line-height: 1.72;
    min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    padding: 14px clamp(18px, 4vw, 60px);
    background: rgba(255, 248, 236, .88);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; color: var(--navy); font-size: 1.26rem; }
.brand img { border-radius: 16px; box-shadow: 0 12px 26px rgba(255, 138, 61, .18); }
.primary-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.primary-nav a {
    padding: 9px 14px;
    border-radius: 999px;
    color: var(--navy-2);
    font-weight: 700;
    font-size: .95rem;
}
.primary-nav a:hover, .primary-nav a.active { background: var(--navy); color: #fff; }
.nav-toggle { display: none; border: 0; background: var(--navy); color: #fff; border-radius: 999px; padding: 10px 16px; font-weight: 800; }
.container { width: min(1160px, calc(100% - 36px)); margin: 0 auto; }
.hero { padding: clamp(42px, 7vw, 96px) 0 54px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(30px, 5vw, 62px); align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,.75); color: var(--navy); font-weight: 800; border: 1px solid var(--line); }
.eyebrow::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 6px rgba(255,138,61,.16); }
h1, h2, h3 { color: var(--navy); line-height: 1.18; margin: 0; }
h1 { font-size: clamp(2.35rem, 6vw, 5.2rem); letter-spacing: -.06em; margin: 20px 0 18px; }
.hero p.lead, .section-lead { font-size: 1.12rem; color: var(--muted); max-width: 760px; }
.hero-actions, .card-actions, .inline-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 12px 18px; border-radius: 999px; font-weight: 900; border: 1px solid var(--line); cursor: pointer; }
.btn.primary { background: var(--navy); color: #fff; box-shadow: 0 16px 34px rgba(20,33,61,.22); }
.btn.secondary { background: rgba(255,255,255,.82); color: var(--navy); }
.btn.orange { background: var(--orange); color: #201307; border: 0; }
.hero-card, .soft-card, .list-card, .topic-card, .rating-card, .comment-card, .feature-card, .form-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.hero-card { padding: 18px; transform: rotate(1deg); }
.hero-card img { border-radius: 24px; background: #fff; }
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.stat { padding: 18px; border-radius: 22px; background: rgba(255,255,255,.72); border: 1px solid var(--line); }
.stat strong { display: block; font-size: 1.62rem; color: var(--navy); }
.stat span { color: var(--muted); font-weight: 700; font-size: .92rem; }
section { padding: 48px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.section-head h2 { font-size: clamp(1.8rem, 3.8vw, 3rem); letter-spacing: -.04em; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.list-card, .topic-card, .rating-card, .comment-card, .feature-card, .form-card, .soft-card { padding: 22px; }
.list-cover { border-radius: 22px; overflow: hidden; margin-bottom: 16px; background: #fff; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 13px 0; }
.tag { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: var(--purple-2); color: var(--navy); font-weight: 800; font-size: .84rem; }
.tag.orange { background: rgba(255,138,61,.18); color: #7b3a00; }
.tag.navy { background: rgba(20,33,61,.1); color: var(--navy); }
.card-meta, .mini-meta { display: flex; flex-wrap: wrap; gap: 10px; color: var(--muted); font-weight: 700; font-size: .92rem; margin-top: 12px; }
.pill { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 999px; background: rgba(255,255,255,.75); border: 1px solid var(--line); }
.topic-card { position: relative; overflow: hidden; }
.topic-card::after { content: ""; position: absolute; width: 120px; height: 120px; border-radius: 50%; background: rgba(255,138,61,.14); right: -40px; top: -42px; }
.topic-card h3, .topic-card p, .topic-card .card-meta { position: relative; z-index: 1; }
.rating-score { font-size: 2.4rem; font-weight: 950; color: var(--orange); letter-spacing: -.05em; }
.stars { color: #ff9a3d; letter-spacing: 2px; font-size: 1.15rem; }
.progress { height: 11px; border-radius: 999px; background: rgba(20,33,61,.09); overflow: hidden; margin: 14px 0; }
.progress span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--orange), var(--purple)); }
.circle-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.circle-card { padding: 20px; border-radius: 28px; background: rgba(255,255,255,.72); border: 1px solid var(--line); text-align: center; }
.circle-card img { width: 82px; height: 82px; margin: 0 auto 10px; }
.challenge { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 24px; align-items: center; padding: 26px; border-radius: 34px; background: linear-gradient(135deg, rgba(20,33,61,.96), rgba(49,61,108,.92)); color: #fff; overflow: hidden; }
.challenge h2 { color: #fff; }
.challenge p { color: rgba(255,255,255,.82); }
.challenge img { border-radius: 26px; background: rgba(255,255,255,.08); }
.comment-card { display: grid; grid-template-columns: 54px 1fr; gap: 14px; align-items: start; }
.avatar { width: 54px; height: 54px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.bubble { padding: 16px; border-radius: 22px; background: rgba(255,255,255,.82); position: relative; }
.bubble::before { content: ""; position: absolute; left: -8px; top: 18px; border-top: 8px solid transparent; border-bottom: 8px solid transparent; border-right: 9px solid rgba(255,255,255,.82); }
.feed { display: grid; gap: 14px; }
.feed-item { display: grid; grid-template-columns: 48px 1fr auto; gap: 12px; align-items: center; padding: 16px; border-radius: 24px; background: rgba(255,255,255,.74); border: 1px solid var(--line); }
.feed-item img { width: 48px; height: 48px; border-radius: 16px; }
.cta-panel { padding: clamp(24px, 5vw, 44px); border-radius: 36px; background: linear-gradient(135deg, rgba(255,138,61,.92), rgba(200,182,255,.95)); color: #1f1830; box-shadow: var(--shadow); }
.cta-panel h2 { color: #1f1830; }
.faq { display: grid; gap: 14px; }
.faq details { background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 22px; padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 900; color: var(--navy); }
.page-hero { padding: 58px 0 30px; }
.page-hero .lead { color: var(--muted); max-width: 820px; font-size: 1.12rem; }
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 26px; align-items: start; }
.timeline { display: grid; gap: 16px; }
.timeline-item { padding: 20px; border-left: 5px solid var(--orange); border-radius: 0 22px 22px 0; background: rgba(255,255,255,.75); }
.table-wrap { overflow-x: auto; border-radius: 24px; border: 1px solid var(--line); background: rgba(255,255,255,.75); }
table { width: 100%; border-collapse: collapse; min-width: 660px; }
th, td { padding: 16px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--navy); background: rgba(200,182,255,.2); }
.video-card { display: grid; grid-template-columns: 150px 1fr; gap: 18px; align-items: center; }
.video-thumb { border-radius: 22px; overflow: hidden; background: #fff; position: relative; }
.play-dot { position: absolute; inset: 0; display: grid; place-items: center; font-size: 1.8rem; color: #fff; text-shadow: 0 4px 14px rgba(0,0,0,.28); }
.form-grid { display: grid; gap: 14px; }
label { font-weight: 900; color: var(--navy); }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 18px; padding: 13px 15px; font: inherit; background: rgba(255,255,255,.84); color: var(--ink); }
textarea { min-height: 140px; resize: vertical; }
.notice { padding: 16px 18px; border-radius: 22px; background: rgba(255,138,61,.14); border: 1px solid rgba(255,138,61,.28); color: #643000; font-weight: 700; }
.site-footer { margin-top: 56px; padding: 40px clamp(18px,4vw,60px); background: var(--navy); color: rgba(255,255,255,.82); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 28px; width: min(1160px, 100%); margin: 0 auto; }
.footer-brand { font-size: 1.5rem; font-weight: 950; color: #fff; margin-bottom: 12px; }
.site-footer h2 { color: #fff; font-size: 1.08rem; margin-bottom: 10px; }
.site-footer p { margin: 0 0 9px; }
.empty-state { padding: 20px; border-radius: 22px; background: rgba(255,255,255,.7); border: 1px dashed var(--line); color: var(--muted); }
@media (max-width: 920px) {
    .hero-grid, .grid-3, .grid-2, .split, .challenge, .footer-grid { grid-template-columns: 1fr; }
    .circle-grid { grid-template-columns: repeat(2, 1fr); }
    .primary-nav { position: absolute; right: 18px; top: 72px; flex-direction: column; align-items: stretch; min-width: 220px; padding: 12px; border-radius: 24px; background: rgba(255,248,236,.98); box-shadow: var(--shadow); border: 1px solid var(--line); display: none; }
    .primary-nav.open { display: flex; }
    .nav-toggle { display: inline-flex; }
    .section-head { align-items: flex-start; flex-direction: column; }
    .hero-card { transform: none; }
}
@media (max-width: 560px) {
    .container { width: min(100% - 28px, 1160px); }
    .site-header { padding: 12px 14px; }
    .brand span { font-size: 1.05rem; }
    .stats-row { grid-template-columns: 1fr; }
    .circle-grid { grid-template-columns: 1fr; }
    .feed-item { grid-template-columns: 42px 1fr; }
    .feed-item .pill { grid-column: 2; justify-self: start; }
    .video-card { grid-template-columns: 1fr; }
    h1 { font-size: 2.42rem; }
    section { padding: 34px 0; }
}

.w-82 { width: 82%; }
.w-84 { width: 84%; }
.w-86 { width: 86%; }
.w-87 { width: 87%; }
.w-89 { width: 89%; }