:root {
  --green: #2ea363;
  --green-600: #24804e;
  --green-dark: #176b3f;
  --green-50: #f0faf3;
  --green-100: #e0f4e7;
  --gold: #c9983a;
  --orange: #e97f48;
  --ink: #101817;
  --muted: #5f6b67;
  --line: #dce9e1;
  --page: #f4fbf6;
  --card: #ffffff;
  --radius: 22px;
  --shadow: 0 2px 8px rgba(12, 46, 31, 0.05), 0 12px 32px rgba(12, 46, 31, 0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green-dark); }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

/* 顶部导航 */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(244, 251, 246, 0.86); backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 800; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.brand small { color: var(--muted); font-weight: 600; font-size: 13px; }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 14px; font-weight: 700; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--green-dark); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; background: #fff; }

/* 首屏 */
.hero { padding: 72px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--green-dark); background: var(--green-100); border-radius: 999px; padding: 6px 14px; font-size: 13px; font-weight: 800; letter-spacing: 0.02em; }
h1 { font-size: clamp(40px, 5.6vw, 68px); line-height: 1.08; margin: 18px 0 18px; letter-spacing: -0.02em; }
h1 em { font-style: normal; color: var(--green-600); }
.lead { color: var(--muted); font-size: clamp(17px, 2vw, 21px); margin: 0 0 28px; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.store-badge { display: inline-flex; align-items: center; gap: 10px; background: var(--ink); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 14px; font-weight: 700; }
.store-badge svg { width: 22px; height: 22px; fill: #fff; }
.store-badge small { display: block; font-size: 11px; opacity: 0.75; font-weight: 600; line-height: 1.1; }
.store-badge span { line-height: 1.15; }
.store-badge.soon { background: #2d302d; cursor: default; }
.ghost { display: inline-flex; padding: 12px 20px; border-radius: 14px; border: 1px solid var(--line); background: #fff; text-decoration: none; font-weight: 700; color: var(--green-dark); }
.trust { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: 14px; }
.trust span::before { content: "✓ "; color: var(--green); font-weight: 900; }

.phones { position: relative; display: flex; justify-content: center; }
.phone { width: min(300px, 70vw); border-radius: 40px; background: #0d1a14; padding: 9px; box-shadow: var(--shadow), 0 30px 60px rgba(12, 46, 31, 0.18); }
.phone img { border-radius: 32px; }
.phones .phone.back { position: absolute; width: min(250px, 58vw); left: 2%; top: 50px; transform: rotate(-6deg); opacity: 0.95; }
.phones .phone.front { position: relative; margin-left: 30%; transform: rotate(3deg); }

/* 区块 */
section { padding: 72px 0; }
.section-head { max-width: 720px; margin-bottom: 36px; }
.kicker { color: var(--green-600); font-weight: 800; font-size: 14px; letter-spacing: 0.04em; text-transform: uppercase; }
h2 { font-size: clamp(30px, 3.6vw, 44px); line-height: 1.15; margin: 8px 0 14px; letter-spacing: -0.01em; }
.section-head p { color: var(--muted); font-size: 18px; margin: 0; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.step-no { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--green-600); color: #fff; font-weight: 800; margin-bottom: 14px; }
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }

.weeks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.week .no { color: var(--green-600); font-weight: 800; font-size: 13px; }
.week h3 { margin: 6px 0 6px; }
.week ul { margin: 12px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 15px; }
.week li { padding: 5px 0; border-top: 1px dashed var(--line); }
.week li:first-child { border-top: 0; }
.days { display: flex; gap: 5px; margin-top: 14px; }
.days i { width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line); display: grid; place-items: center; font-style: normal; font-size: 11px; color: var(--muted); }
.days i.a { border-color: var(--green-600); color: var(--green-600); font-weight: 800; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split.reverse > :first-child { order: 2; }
.feature-list { list-style: none; padding: 0; margin: 18px 0 0; }
.feature-list li { padding: 10px 0 10px 34px; position: relative; color: var(--ink); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: 13px; width: 22px; height: 22px; border-radius: 50%; background: var(--green-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%2324804e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/14px no-repeat; }
.feature-list li span { display: block; color: var(--muted); font-size: 15px; }
.shot { display: flex; justify-content: center; }

.standards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.stat { text-align: center; }
.stat .big { font-size: 44px; font-weight: 900; line-height: 1; margin: 6px 0; }
.stat.amateur .big { color: var(--green-600); }
.stat.pro .big { color: var(--gold); }
.stat.dist .big { color: var(--ink); }
.stat small { color: var(--muted); }
.tier-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.tier { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; font-weight: 700; font-size: 14px; }
.tier.fail { background: #fffbeb; color: #865600; }
.tier.pass { background: var(--green-50); color: var(--green-600); }
.tier.perfect { background: #fbf5e8; color: #8a6420; }

.gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.gallery figure { margin: 0; }
.gallery img { border-radius: 22px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.gallery figcaption { text-align: center; color: var(--muted); font-size: 14px; margin-top: 10px; }

.teelab { background: linear-gradient(135deg, #2ea363, #176b3f); color: #fff; border-radius: 28px; padding: 44px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.teelab h2 { color: #fff; margin-top: 0; }
.teelab p { margin: 0; opacity: 0.9; font-size: 18px; }
.teelab a { background: #fff; color: var(--green-dark); padding: 14px 22px; border-radius: 14px; text-decoration: none; font-weight: 800; white-space: nowrap; }

.faq { max-width: 820px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; margin-bottom: 12px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 17px; }
.faq details p { color: var(--muted); margin: 10px 0 0; }

footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
footer a { color: var(--muted); text-decoration: none; margin-right: 18px; }
footer a:hover { color: var(--green-dark); }

/* 文档页（隐私 / 支持） */
.doc { padding: 56px 0 72px; }
.doc .wrap { max-width: 820px; }
.doc h1 { font-size: clamp(32px, 4vw, 44px); }
.doc h2 { font-size: 24px; margin-top: 36px; }
.doc p, .doc li { color: #2b3632; }
.doc .updated { color: var(--muted); }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 56px 0; }
.doc .card { margin: 18px 0; }

@media (max-width: 900px) {
  .hero .wrap, .split { grid-template-columns: 1fr; }
  .split.reverse > :first-child { order: 0; }
  .weeks { grid-template-columns: repeat(2, 1fr); }
  .steps, .standards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(5, 70%); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
  .gallery figure { scroll-snap-align: center; }
  .teelab { grid-template-columns: 1fr; padding: 32px; }
  .nav-links a:not(.lang) { display: none; }
  .phones .phone.back { display: none; }
  .phones .phone.front { margin-left: 0; transform: none; }
}
@media (max-width: 560px) {
  .weeks { grid-template-columns: 1fr; }
  section { padding: 52px 0; }
  .hero { padding-top: 40px; }
}