:root {
  --bg: #0B0B0D;
  --panel: #15151A;
  --panel-2: #1B1B21;
  --ink: #F7F2E8;
  --soft: #B2A895;
  --muted: #807A70;
  --brand: #FFD64C;
  --brand-2: #FFB522;
  --accent: #FF8B26;
  --green: #9ED49B;
  --line: rgba(255, 214, 92, 0.13);
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.42);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--bg);
  color: var(--soft);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
.container { width: min(1100px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 80px 0; }
@media (min-width: 1024px) { .section { padding: 104px 0; } }

/* 标题区 */
.section-head { margin-bottom: 40px; }
.section-head-top { display: flex; align-items: baseline; gap: 14px; }
.section-num { font-family: var(--font-mono); font-size: 13px; color: var(--brand); letter-spacing: 0.08em; }
.section-title { font-size: clamp(26px, 3vw, 34px); font-weight: 700; color: var(--ink); letter-spacing: -0.02em; }
.section-line { height: 1px; background-color: var(--line); margin: 14px 0 30px; width: 100%; }
.section-desc { font-size: 14px; color: var(--muted); text-align: right; flex: 1; }

/* 00 提示条 */
.top-bar { background-color: var(--panel-2); border-bottom: 1px solid var(--line); height: 34px; display: flex; align-items: center; font-size: 12.5px; padding: 0 16px; }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; max-width: 1100px; margin: 0 auto; }
.badge { font-size: 11px; color: var(--brand); border: 1px solid var(--brand); padding: 1px 6px; border-radius: 4px; margin-right: 8px; display: inline-block; }
.top-bar a { color: var(--brand); }

/* 01 导航 */
.header { position: sticky; top: 0; background-color: var(--bg); z-index: 100; border-bottom: 1px solid var(--line); height: 64px; display: flex; align-items: center; }
.header-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 800; color: var(--ink); }
.logo img { height: 32px; border-radius: 6px; }
.nav-links { display: none; gap: 24px; font-size: 14px; }
@media (min-width: 768px) { .nav-links { display: flex; } }
.nav-links a { color: var(--soft); transition: color 0.2s; }
.nav-links a:hover { color: var(--ink); }
.btn-nav { background-color: var(--brand); color: var(--bg); font-weight: 700; font-size: 14px; height: 36px; padding: 0 18px; border-radius: 99px; display: flex; align-items: center; }

/* 02 首屏 */
.hero { text-align: center; padding-top: 60px; }
.hero-pill { display: inline-block; border: 1px solid var(--line); background-color: var(--panel); border-radius: 99px; padding: 4px 14px; font-size: 13px; color: var(--brand-2); margin-bottom: 24px; }
.hero h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 800; color: var(--ink); line-height: 1.2; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero h1 span { color: var(--brand); }
.hero p { font-size: 16px; color: var(--soft); max-width: 600px; margin: 0 auto 36px; }
.hero-actions { display: flex; justify-content: center; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.btn-primary { background-color: var(--brand); color: var(--bg); font-weight: 700; font-size: 16px; padding: 12px 32px; border-radius: 8px; display: inline-block; transition: opacity 0.2s; }
.btn-primary:hover { opacity: 0.9; }
.btn-secondary { border: 1px solid var(--line); color: var(--ink); font-weight: 700; font-size: 16px; padding: 12px 32px; border-radius: 8px; display: inline-block; }
.hero-sub { font-size: 13px; color: var(--muted); }
.hero-scroll { margin-top: 60px; overflow: hidden; position: relative; width: 100%; }
.hero-scroll-inner { display: flex; gap: 16px; width: max-content; animation: scroll 48s linear infinite; }
.hero-scroll:hover .hero-scroll-inner { animation-play-state: paused; }
.hero-scroll img { width: 200px; aspect-ratio: 3/4; object-fit: cover; border-radius: 12px; opacity: 0.8; transition: opacity 0.3s; }
.hero-scroll img:hover { opacity: 1; }
@keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(calc(-50% - 8px)); } }

/* 03 形态/品类 */
.cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (min-width: 768px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
.cat-card { background-color: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px; min-height: 220px; display: flex; flex-direction: column; position: relative; transition: border-color 0.2s; }
.cat-card:hover { border-color: var(--brand); }
.cat-num { font-size: 48px; font-weight: 700; color: transparent; -webkit-text-stroke: 1px var(--muted); font-family: var(--font-mono); line-height: 1; margin-bottom: auto; }
.cat-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 8px; margin-top: 20px; }
.cat-card p { font-size: 14px; color: var(--soft); }
.cat-arrow { position: absolute; bottom: 24px; right: 24px; color: var(--brand); font-size: 20px; }

/* 04 分类索引 */
.tabs { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 12px; margin-bottom: 24px; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab-btn { background-color: var(--panel); border: 1px solid var(--line); color: var(--soft); padding: 8px 18px; border-radius: 99px; font-size: 14px; white-space: nowrap; cursor: pointer; transition: all 0.2s; }
.tab-btn.active { background-color: var(--brand); color: var(--bg); border-color: var(--brand); font-weight: 700; }
.tab-content { display: none; }
.tab-content.active { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 768px) { .tab-content.active { grid-template-columns: repeat(3, 1fr); } }
.tab-card { background-color: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.tab-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.tab-card-info { padding: 16px; }
.tab-card-info h4 { color: var(--ink); font-size: 16px; margin-bottom: 6px; }
.tab-card-info p { font-size: 13px; color: var(--soft); }

/* 05 排行/热门 */
.rank-list { border-top: 1px solid var(--line); }
.rank-item { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; border-bottom: 1px solid var(--line); }
.rank-left { display: flex; align-items: center; gap: 16px; }
.rank-num { font-family: var(--font-mono); font-size: 14px; color: var(--accent); font-weight: 700; width: 24px; }
.rank-name { color: var(--ink); font-size: 16px; font-weight: 700; }
.rank-tag { font-size: 12px; color: var(--muted); border: 1px solid var(--line); padding: 2px 8px; border-radius: 4px; margin-left: 8px; }
.rank-heat { font-family: var(--font-mono); font-size: 13px; color: var(--brand); }

/* 06 专题合集 */
.collection-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (min-width: 768px) { .collection-grid { grid-template-columns: repeat(3, 1fr); } }
.col-card { background-color: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.col-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.col-info { padding: 16px; }
.col-info h3 { color: var(--ink); font-size: 16px; margin-bottom: 6px; }
.col-info p { font-size: 13px; color: var(--soft); }

/* 07 节奏/流程 */
.steps { display: flex; flex-direction: column; gap: 24px; position: relative; }
@media (min-width: 768px) { .steps { flex-direction: row; justify-content: space-between; } }
.step-item { flex: 1; position: relative; }
.step-num { font-family: var(--font-mono); font-size: 13px; color: var(--brand); margin-bottom: 12px; display: block; }
.step-item h4 { color: var(--ink); font-size: 16px; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--soft); }

/* 08 转化区 */
.cta-box { background-color: var(--panel); border: 1px solid var(--line); border-radius: 24px; padding: 48px 24px; text-align: center; }
@media (min-width: 768px) { .cta-box { padding: 64px; } }
.cta-box h2 { font-size: clamp(28px, 4vw, 40px); color: var(--ink); margin-bottom: 16px; line-height: 1.3; }
.cta-box p { font-size: 15px; color: var(--soft); margin-bottom: 32px; }
.cta-info { margin-top: 32px; font-size: 13px; color: var(--muted); display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }

/* 09 用户反馈 */
.feedback-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 768px) { .feedback-grid { grid-template-columns: repeat(2, 1fr); } }
.fb-item { border-left: 2px solid var(--brand); padding-left: 20px; }
.fb-text { font-size: 15px; color: var(--soft); margin-bottom: 12px; line-height: 1.8; }
.fb-user { font-size: 13px; color: var(--muted); }

/* 10 FAQ */
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q { padding: 20px 0; display: flex; justify-content: space-between; align-items: center; cursor: pointer; color: var(--ink); font-weight: 700; font-size: 16px; }
.faq-q::after { content: "+"; font-size: 20px; color: var(--brand); transition: transform 0.3s; }
.faq-item.active .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; }
.faq-a p { padding-bottom: 20px; font-size: 15px; color: var(--soft); }
.faq-item.active .faq-a { max-height: 500px; }

/* 11 页脚 */
.footer { background-color: var(--panel); border-top: 1px solid var(--line); padding: 60px 0 40px; margin-bottom: 60px; }
@media (min-width: 560px) { .footer { margin-bottom: 0; } }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; margin-bottom: 40px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-brand h2 { font-size: 20px; color: var(--ink); margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--muted); }
.footer-links h4 { font-size: 14px; color: var(--ink); margin-bottom: 16px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--soft); }
.copyright { border-top: 1px solid var(--line); padding-top: 24px; font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 12px; }
@media (min-width: 768px) { .copyright { flex-direction: row; justify-content: space-between; align-items: center; } }

/* 移动端吸底条 */
.bottom-bar { position: fixed; bottom: 0; left: 0; width: 100%; background-color: var(--panel-2); border-top: 1px solid var(--line); padding: 12px 20px; display: flex; justify-content: space-between; align-items: center; z-index: 100; transform: translateY(100%); transition: transform 0.3s; }
.bottom-bar.show { transform: translateY(0); }
@media (max-width: 559px) { .bottom-bar { display: flex; } }
.bottom-bar-text { font-size: 13px; color: var(--soft); }
.bottom-bar .btn-primary { padding: 8px 20px; font-size: 14px; }