/* ===========================================================
   绿帽社 · 全网热点追踪平台  —  设计系统 / 样式表
   风格：现代 · 可爱 · 大气 · 专业
   配色：清新绿 + 暖珊瑚 + 奶油底
   =========================================================== */

:root {
  /* 品牌色 */
  --green-300: #7fe0b0;
  --green-400: #34d399;
  --green-500: #16c47f;   /* 主色 */
  --green-600: #0ea46a;
  --green-700: #0b7a50;

  --coral: #ff7a59;       /* 暖珊瑚 强调 */
  --coral-soft: #ffe6dd;
  --yellow: #ffd23f;      /* 活力黄 */
  --yellow-soft: #fff3c4;

  /* 中性色 */
  --cream: #fffaf2;
  --paper: #ffffff;
  --ink: #16241c;
  --ink-soft: #5a6b60;
  --ink-faint: #93a39a;
  --line: #eaf0ec;

  /* 阴影 */
  --sh-sm: 0 4px 14px rgba(14,122,80,.08);
  --sh-md: 0 12px 30px rgba(14,122,80,.12);
  --sh-lg: 0 24px 60px rgba(14,122,80,.18);

  /* 圆角 */
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-pill: 999px;

  --maxw: 1180px;
  --nav-h: 72px;

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
          "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 800; letter-spacing: -.01em; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ============ Layout ============ */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 84px 0; }
.section-sm { padding: 56px 0; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--r-pill);
  font-weight: 700; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--green-500), var(--green-600)); color: #fff; box-shadow: var(--sh-md); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }
.btn-coral { background: linear-gradient(135deg, #ff8c6b, var(--coral)); color: #fff; box-shadow: 0 12px 30px rgba(255,122,89,.35); }
.btn-coral:hover { transform: translateY(-3px); }
.btn-ghost { background: #fff; color: var(--green-700); border: 2px solid var(--green-300); }
.btn-ghost:hover { background: var(--green-50, #eafaf1); transform: translateY(-3px); }
.btn-lg { padding: 16px 34px; font-size: 16px; }

/* ============ Top Nav ============ */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  background: rgba(255,250,242,.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--ink); }
.brand img { width: 38px; height: 38px; }
.brand .b-sub { color: var(--green-600); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 16px; border-radius: var(--r-pill); font-weight: 600; font-size: 15px;
  color: var(--ink-soft); transition: background .2s, color .2s;
}
.nav-links a:hover, .nav-links a.active { background: var(--green-50, #eafaf1); color: var(--green-700); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; background: var(--green-50, #eafaf1); align-items: center; justify-content: center; }
.nav-toggle span { width: 20px; height: 2px; background: var(--green-700); position: relative; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--green-700); }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ============ Hero ============ */
.hero { position: relative; overflow: hidden; padding: 70px 0 90px; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(8px); opacity: .55; animation: float 9s ease-in-out infinite; }
.blob.b1 { width: 320px; height: 320px; background: radial-gradient(circle, var(--green-300), transparent 70%); top: -60px; left: -80px; }
.blob.b2 { width: 260px; height: 260px; background: radial-gradient(circle, var(--coral-soft), transparent 70%); top: 40px; right: -40px; animation-delay: 1.5s; }
.blob.b3 { width: 220px; height: 220px; background: radial-gradient(circle, var(--yellow-soft), transparent 70%); bottom: -60px; left: 40%; animation-delay: 3s; }
@keyframes float { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-24px) } }

.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px; border-radius: var(--r-pill);
  background: #fff; box-shadow: var(--sh-sm); font-size: 13px; font-weight: 700; color: var(--green-700); margin-bottom: 22px;
}
.hero-tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green-500); box-shadow: 0 0 0 4px rgba(22,196,127,.18); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100%{ box-shadow: 0 0 0 4px rgba(22,196,127,.18) } 50%{ box-shadow: 0 0 0 9px rgba(22,196,127,0) } }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.08; }
.hero h1 .hl { color: var(--green-600); position: relative; white-space: nowrap; }
.hero h1 .hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 12px; background: var(--yellow-soft); z-index: -1; border-radius: 6px; }
.hero p.lead { margin-top: 20px; font-size: 18px; color: var(--ink-soft); max-width: 520px; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { margin-top: 26px; display: flex; gap: 22px; flex-wrap: wrap; color: var(--ink-soft); font-size: 14px; }
.hero-trust b { color: var(--ink); font-size: 20px; display: block; }
.hero-art { position: relative; }
.hero-art img { width: 100%; filter: drop-shadow(var(--sh-lg)); }

/* ============ Stats bar ============ */
.stats { background: linear-gradient(135deg, var(--green-600), var(--green-700)); color: #fff; border-radius: var(--r-lg); padding: 34px 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; box-shadow: var(--sh-lg); }
.stats .s-item { text-align: center; }
.stats .s-num { font-size: 34px; font-weight: 800; line-height: 1; }
.stats .s-label { margin-top: 8px; font-size: 14px; opacity: .9; }

/* ============ Section heading ============ */
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 46px; }
.sec-head .eyebrow { display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .12em; color: var(--coral); text-transform: uppercase; margin-bottom: 12px; }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.sec-head p { margin-top: 14px; color: var(--ink-soft); font-size: 16px; }

/* ============ Category cards ============ */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat {
  background: var(--paper); border-radius: var(--r-md); padding: 26px 22px; box-shadow: var(--sh-sm);
  transition: transform .25s, box-shadow .25s; border: 1px solid var(--line); text-align: center;
}
.cat:hover { transform: translateY(-6px); box-shadow: var(--sh-md); }
.cat .ico { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; margin: 0 auto 16px; }
.cat h3 { font-size: 18px; margin-bottom: 6px; }
.cat p { font-size: 13px; color: var(--ink-faint); }
.cat .go { margin-top: 14px; font-size: 13px; font-weight: 700; color: var(--green-600); }

/* ============ Hot list (ranking) ============ */
.hot { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; align-items: start; }
.hot-main { background: var(--paper); border-radius: var(--r-lg); padding: 10px 8px; box-shadow: var(--sh-sm); border: 1px solid var(--line); }
.hot-row {
  display: grid; grid-template-columns: 38px 1fr auto; align-items: center; gap: 14px;
  padding: 14px 18px; border-radius: var(--r-sm); transition: background .2s;
}
.hot-row:hover { background: var(--green-50, #eafaf1); }
.hot-row + .hot-row { border-top: 1px solid var(--line); }
.rank { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-weight: 800; font-size: 14px; background: var(--line); color: var(--ink-soft); }
.rank.r1 { background: linear-gradient(135deg, #ff6b6b, #ff8e53); color: #fff; }
.rank.r2 { background: linear-gradient(135deg, #ffa94d, #ffd23f); color: #fff; }
.rank.r3 { background: linear-gradient(135deg, var(--green-400), var(--green-600)); color: #fff; }
.hot-row .t { font-weight: 600; font-size: 15px; }
.hot-row .t small { display: block; color: var(--ink-faint); font-weight: 400; font-size: 12px; margin-top: 2px; }
.heat { font-size: 13px; font-weight: 700; color: var(--coral); white-space: nowrap; }

.side-card { background: var(--paper); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--sh-sm); border: 1px solid var(--line); }
.side-card h3 { font-size: 17px; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.side-card .sub { font-size: 12px; color: var(--ink-faint); margin-bottom: 14px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 7px 14px; border-radius: var(--r-pill); background: var(--green-50, #eafaf1); color: var(--green-700); font-size: 13px; font-weight: 600; transition: transform .15s; }
.chip:hover { transform: translateY(-2px); background: var(--green-300); }

/* ============ Video / Topic cards ============ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.vcard { background: var(--paper); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--sh-sm); border: 1px solid var(--line); transition: transform .25s, box-shadow .25s; }
.vcard:hover { transform: translateY(-6px); box-shadow: var(--sh-md); }
.vcard .thumb { position: relative; aspect-ratio: 16/10; background: linear-gradient(135deg, var(--green-300), var(--green-500)); display: grid; place-items: center; overflow: hidden; }
.vcard:nth-child(2n) .thumb { background: linear-gradient(135deg, #ffd9cc, var(--coral)); }
.vcard:nth-child(3n) .thumb { background: linear-gradient(135deg, var(--yellow-soft), var(--yellow)); }
.vcard .thumb .emoji { font-size: 54px; filter: drop-shadow(0 6px 10px rgba(0,0,0,.18)); }
.vcard .thumb .play { position: absolute; inset: 0; display: grid; place-items: center; opacity: 0; transition: opacity .25s; background: rgba(11,122,80,.18); }
.vcard:hover .thumb .play { opacity: 1; }
.vcard .thumb .play span { width: 58px; height: 58px; border-radius: 50%; background: #fff; display: grid; place-items: center; box-shadow: var(--sh-md); }
.vcard .thumb .play span::after { content: ""; border-left: 18px solid var(--green-600); border-top: 11px solid transparent; border-bottom: 11px solid transparent; margin-left: 4px; }
.vcard .badge { position: absolute; top: 12px; left: 12px; background: rgba(255,255,255,.92); color: var(--ink); font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: var(--r-pill); }
.vcard .badge.hot { background: var(--coral); color: #fff; }
.vcard .body { padding: 16px 18px 20px; }
.vcard .body h3 { font-size: 16px; line-height: 1.4; }
.vcard .meta { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--ink-faint); }
.vcard .meta .tag { color: var(--green-700); font-weight: 700; }

/* ============ Filter tabs ============ */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.tab { padding: 10px 22px; border-radius: var(--r-pill); background: #fff; border: 2px solid var(--line); font-weight: 700; font-size: 14px; color: var(--ink-soft); transition: all .2s; }
.tab:hover { border-color: var(--green-300); color: var(--green-700); }
.tab.active { background: var(--green-500); border-color: var(--green-500); color: #fff; }

/* ============ CTA banner ============ */
.cta-banner { background: linear-gradient(135deg, var(--green-500), var(--green-700)); border-radius: var(--r-lg); padding: 54px 40px; text-align: center; color: #fff; box-shadow: var(--sh-lg); position: relative; overflow: hidden; }
.cta-banner::before, .cta-banner::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta-banner::before { width: 200px; height: 200px; top: -60px; left: -40px; }
.cta-banner::after { width: 160px; height: 160px; bottom: -50px; right: -30px; }
.cta-banner h2 { font-size: clamp(24px, 3vw, 34px); }
.cta-banner p { margin: 14px auto 28px; max-width: 520px; opacity: .92; }

/* ============ Celebrity ============ */
.spotlight { display: grid; grid-template-columns: 1fr 1.2fr; gap: 30px; align-items: center; background: var(--paper); border-radius: var(--r-lg); padding: 30px; box-shadow: var(--sh-sm); border: 1px solid var(--line); }
.spotlight .ava { aspect-ratio: 1; border-radius: var(--r-md); background: linear-gradient(135deg, var(--green-300), var(--green-500)); display: grid; place-items: center; font-size: 90px; }
.spotlight h3 { font-size: 24px; }
.spotlight .role { color: var(--coral); font-weight: 700; margin: 6px 0 14px; }
.spotlight p { color: var(--ink-soft); }
.spotlight .tags { margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap; }

.timeline { margin-top: 30px; position: relative; padding-left: 22px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: var(--green-300); }
.tl-item { position: relative; padding: 0 0 26px 22px; }
.tl-item::before { content: ""; position: absolute; left: -22px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--green-500); }
.tl-item .when { font-size: 12px; font-weight: 700; color: var(--green-600); }
.tl-item h4 { font-size: 16px; margin: 4px 0 4px; }
.tl-item p { font-size: 14px; color: var(--ink-soft); }

/* ============ Download page ============ */
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.dl-art { position: relative; display: grid; place-items: center; }
.dl-art img { width: 280px; filter: drop-shadow(var(--sh-lg)); }
.dl-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 26px 0; }
.dl-feat { display: flex; gap: 12px; align-items: flex-start; }
.dl-feat .fi { width: 42px; height: 42px; border-radius: 12px; background: var(--green-50, #eafaf1); display: grid; place-items: center; flex: 0 0 auto; font-size: 20px; }
.dl-feat h4 { font-size: 15px; }
.dl-feat p { font-size: 13px; color: var(--ink-faint); }
.dl-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.store-btn { display: flex; align-items: center; gap: 12px; padding: 13px 22px; border-radius: var(--r-md); background: var(--ink); color: #fff; transition: transform .2s; }
.store-btn:hover { transform: translateY(-3px); }
.store-btn .si { font-size: 24px; }
.store-btn small { display: block; font-size: 11px; opacity: .7; }
.store-btn b { font-size: 15px; }

.qr-card { background: var(--paper); border-radius: var(--r-md); padding: 20px; box-shadow: var(--sh-sm); border: 1px solid var(--line); text-align: center; width: 200px; }
.qr-card img { width: 140px; height: 140px; margin: 0 auto 10px; }
.qr-card .scan { font-size: 13px; color: var(--ink-soft); }

.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review { background: var(--paper); border-radius: var(--r-md); padding: 22px; box-shadow: var(--sh-sm); border: 1px solid var(--line); }
.review .stars { color: var(--yellow); font-size: 16px; letter-spacing: 2px; }
.review p { margin: 10px 0 14px; font-size: 14px; color: var(--ink-soft); }
.review .who { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; }
.review .who .av { width: 32px; height: 32px; border-radius: 50%; background: var(--green-300); display: grid; place-items: center; font-size: 16px; }

/* ============ About ============ */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: start; }
.about-grid h2 { font-size: 30px; margin-bottom: 18px; }
.about-grid p { color: var(--ink-soft); margin-bottom: 14px; }
.value-list { margin-top: 20px; display: grid; gap: 14px; }
.value { display: flex; gap: 14px; align-items: flex-start; }
.value .vi { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--green-400), var(--green-600)); color: #fff; display: grid; place-items: center; font-size: 18px; flex: 0 0 auto; }

.contact-card { background: var(--paper); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--sh-sm); border: 1px solid var(--line); }
.contact-card h3 { font-size: 20px; margin-bottom: 6px; }
.contact-card .sub { font-size: 13px; color: var(--ink-faint); margin-bottom: 20px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 7px; color: var(--ink); }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--r-sm); border: 2px solid var(--line);
  font-family: inherit; font-size: 14px; background: var(--cream); transition: border-color .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--green-400); }
.field textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: 12px; color: var(--green-600); margin-top: 10px; min-height: 18px; }

.faq { margin-top: 30px; display: grid; gap: 12px; }
.faq-item { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.faq-item summary { padding: 18px 22px; font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; color: var(--green-600); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 18px; color: var(--ink-soft); font-size: 14px; }

/* ============ Disclaimer ============ */
.disclaimer { background: var(--cream); border: 1px dashed var(--green-300); border-radius: var(--r-md); padding: 20px 24px; font-size: 13px; color: var(--ink-soft); line-height: 1.7; }
.disclaimer b { color: var(--green-700); }

/* ============ Footer ============ */
.footer { background: #0f2018; color: #cfe3d8; padding: 60px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; }
.footer .brand { color: #fff; margin-bottom: 14px; }
.footer .brand .b-sub { color: var(--green-400); }
.footer p.desc { font-size: 14px; color: #9fc1b1; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { font-size: 14px; color: #9fc1b1; transition: color .2s; }
.footer ul a:hover { color: var(--green-400); }
.footer-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: #7fa192; }
.footer-bottom a { color: #7fa192; }

/* ============ Back to top ============ */
.to-top { position: fixed; right: 22px; bottom: 22px; width: 48px; height: 48px; border-radius: 50%; background: var(--green-500); color: #fff; display: grid; place-items: center; box-shadow: var(--sh-md); opacity: 0; pointer-events: none; transform: translateY(12px); transition: all .3s; z-index: 60; font-size: 20px; }
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--green-600); }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s, transform .6s; }
.reveal.in { opacity: 1; transform: none; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 420px; margin: 0 auto; }
  .cats { grid-template-columns: repeat(2, 1fr); }
  .hot { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: 1fr; gap: 30px; }
  .spotlight { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .reviews { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch; gap: 4px;
    position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--cream);
    padding: 14px 22px; border-bottom: 1px solid var(--line); box-shadow: var(--sh-md);
  }
  .nav.open .nav-links a { padding: 12px 16px; }
  .section { padding: 60px 0; }
  .cards { grid-template-columns: 1fr; }
  .dl-features { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .cta-banner { padding: 40px 22px; }
}