/* =========================================================
   情绪密林 · 官网设计系统
   纯静态 · 简约大气 · 自适应（移动优先）
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root {
  /* 品牌色 */
  --c-forest: #1F7A5C;        /* 主色：森林绿（情绪密林） */
  --c-forest-dark: #155C44;
  --c-forest-light: #E6F2EC;
  --c-warm: #FF8A5B;          /* 共鸣 / 温暖 */
  --c-night: #2A3B5C;         /* 深夜陪伴 */
  --c-purple: #B39DDB;        /* 情绪 */

  /* 中性色 */
  --c-bg: #FAFAF7;            /* 米白背景 */
  --c-bg-dark: #15291F;       /* 深色 Hero */
  --c-surface: #FFFFFF;
  --c-text: #1F2A24;
  --c-text-soft: #5B6B63;
  --c-text-invert: #F4F8F5;
  --c-border: #E7EAE7;

  /* 排版 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans CN", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* 间距 / 圆角 / 阴影 */
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(21, 41, 31, 0.06);
  --shadow-md: 0 8px 28px rgba(21, 41, 31, 0.10);
  --shadow-lg: 0 18px 50px rgba(21, 41, 31, 0.14);
  --maxw: 1200px;
  --gut: 24px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
/* 锚点跳转不被吸顶导航遮挡（SEO/UX：避免跳转后标题被固定头盖住） */
section[id], .page-hero[id] { scroll-margin-top: 84px; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--c-forest); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; color: var(--c-text); }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 布局工具 ---------- */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }
.section { padding: 88px 0; }
.section--tight { padding: 56px 0; }

/* ---------- 排版组件 ---------- */
.eyebrow {
  display: inline-block; font-size: 14px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--c-forest);
  font-weight: 700; margin-bottom: 14px;
}
.section-title { font-size: clamp(26px, 4vw, 40px); letter-spacing: -.01em; }
.section-sub { color: var(--c-text-soft); font-size: 17px; max-width: 640px; margin: 0 auto; }
.lead { font-size: 19px; color: var(--c-text-soft); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-size: 16px; font-weight: 600;
  border: 1.5px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--c-forest); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--c-forest-dark); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--c-forest); border-color: var(--c-forest); }
.btn--ghost:hover { background: var(--c-forest-light); }
.btn--light { background: #fff; color: var(--c-forest); }
.btn--light:hover { box-shadow: var(--shadow-md); }
.btn--block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--c-text); }
.brand:hover { text-decoration: none; }
.brand .logo-dot {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, var(--c-forest), var(--c-warm));
  display: inline-block;
}
.brand .logo-img { width: 30px; height: 30px; border-radius: 8px; object-fit: cover; display: inline-block; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--c-text-soft); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--c-forest); text-decoration: none; }
.nav-cta { margin-left: 8px; }
/* 导航 CTA 文字必须始终为白色：.nav-links a 的优先级会覆盖 .btn--primary 的白字，显式提权修复 */
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover { color: #fff; text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--c-text); margin: 4px 0; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(31,122,92,.25), transparent 60%),
              linear-gradient(160deg, #15291F 0%, #1F3A2C 55%, #1F7A5C 130%);
  color: var(--c-text-invert);
}
.hero .container { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding-top: 92px; padding-bottom: 92px; }
.hero h1 { color: #fff; font-size: clamp(30px, 5vw, 52px); letter-spacing: -.02em; }
.hero .lead { color: rgba(244,248,245,.82); font-size: 19px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 26px; }
.hero-badge { font-size: 13px; color: rgba(244,248,245,.8); background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); padding: 6px 12px; border-radius: 999px; }
/* Hero 区幽灵按钮：默认白字白边；hover 时背景转半透明白（而非淡绿），文字保持白色，避免白字配浅底看不清 */
.hero .btn--ghost { color: #fff; border-color: rgba(255,255,255,.55); }
.hero .btn--ghost:hover { background: rgba(255,255,255,.16); color: #fff; }

/* 小程序码占位卡 */
.qr-card {
  background: #fff; color: var(--c-text); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-lg); max-width: 280px; margin: 0 auto;
  text-align: center;
}
.qr-box {
  width: 200px; height: 200px; margin: 0 auto 14px; border-radius: 14px;
  border: 6px solid #fff; box-shadow: var(--shadow-sm); overflow: hidden; background: #fff;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; display: block; }
.qr-box::after { content: none; }
.qr-card .qr-tip { font-size: 13px; color: var(--c-text-soft); margin: 0; }
.qr-card .qr-tip b { color: var(--c-forest); }

/* ---------- 价值卡片 ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

.value-card, .feature-card, .trust-card {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm);
  transition: transform .15s ease, box-shadow .15s ease;
}
.value-card:hover, .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.value-icon, .feature-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-size: 26px; margin-bottom: 16px; background: var(--c-forest-light);
}
.value-card h3 { font-size: 19px; }
.value-card p { color: var(--c-text-soft); font-size: 15px; margin: 0; }

/* ---------- 功能卡片（带截图占位） ---------- */
.feature-card { padding: 0; overflow: hidden; }
.feature-card .fc-body { padding: 26px; }
.feature-card h3 { font-size: 20px; }
.feature-card p { color: var(--c-text-soft); font-size: 15px; }
.feature-card .fc-more { font-weight: 600; font-size: 15px; }

/* ---------- 手机 Mockup（真实截图） ---------- */
.phone {
  width: 252px; margin: 0 auto; background: #0E1A14; border-radius: 34px;
  padding: 9px; box-shadow: var(--shadow-lg); border: 2px solid #2A3B5C;
}
.phone-screen {
  background: var(--c-bg); border-radius: 26px; overflow: hidden; padding: 14px 12px;
}
.phone-shot {
  width: 100%; height: auto; border-radius: 24px; display: block; box-shadow: inset 0 0 0 1px rgba(0,0,0,.05);
}
.phone-cap { margin-top: 14px; color: var(--c-text-soft); font-size: 14px; text-align: center; font-weight: 600; }
.phone-notch { width: 90px; height: 6px; background: #2A3B5C; border-radius: 999px; margin: 0 auto 12px; }
.mock-head { font-size: 13px; font-weight: 700; color: var(--c-forest); text-align: center; margin-bottom: 12px; }
.mock-post {
  background: #fff; border: 1px solid var(--c-border); border-radius: 12px;
  padding: 10px 12px; margin-bottom: 10px; text-align: left;
}
.mock-post .mp-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.mock-avatar { width: 22px; height: 22px; border-radius: 50%; background: var(--c-forest-light); }
.mock-name { font-size: 11px; font-weight: 600; color: var(--c-text); }
.mock-tag { font-size: 10px; color: #fff; background: var(--c-warm); padding: 1px 7px; border-radius: 999px; margin-left: auto; }
.mock-text { font-size: 11px; color: var(--c-text-soft); line-height: 1.5; }
.mock-foot { display: flex; gap: 12px; margin-top: 7px; font-size: 10px; color: var(--c-text-soft); }
.mock-foot span::before { content: "♥ "; color: var(--c-warm); }

/* ---------- 信任徽章 ---------- */
.trust-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.trust-card { text-align: center; padding: 24px 18px; }
.trust-card .t-ico { font-size: 30px; }
.trust-card h4 { font-size: 16px; margin: 10px 0 4px; }
.trust-card p { font-size: 13px; color: var(--c-text-soft); margin: 0; }

/* ---------- 口碑卡片 ---------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quote-card {
  background: var(--c-surface); border: 1px solid var(--c-border); border-left: 4px solid var(--c-warm);
  border-radius: var(--radius-sm); padding: 22px; box-shadow: var(--shadow-sm);
}
.quote-card .q-text { font-size: 15px; color: var(--c-text); }
.quote-card .q-by { font-size: 13px; color: var(--c-text-soft); margin-top: 12px; }

/* ---------- CTA 区块 ---------- */
.cta {
  background: linear-gradient(135deg, var(--c-forest), var(--c-forest-dark));
  color: #fff; border-radius: 28px; padding: 56px 40px; text-align: center;
  box-shadow: var(--shadow-lg);
}
.cta h2 { color: #fff; font-size: clamp(24px, 4vw, 34px); }
.cta p { color: rgba(255,255,255,.85); max-width: 540px; margin: 0 auto 26px; }

/* 扫码弹窗（底部 CTA 点击放大二维码） */
.qr-modal { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; background: rgba(15,30,22,.66); padding: 20px; }
.qr-modal.show { display: flex; }
.qr-modal__box { background: #fff; border-radius: 20px; padding: 26px; max-width: 320px; width: 100%; text-align: center; position: relative; box-shadow: var(--shadow-lg); }
.qr-modal__box img { width: 220px; height: 220px; object-fit: contain; margin: 0 auto 14px; border-radius: 12px; }
.qr-modal__box p { margin: 0; color: var(--c-text-soft); font-size: 14px; line-height: 1.6; }
.qr-modal__box b { color: var(--c-forest); }
.qr-modal__close { position: absolute; top: 10px; right: 14px; border: 0; background: none; font-size: 26px; line-height: 1; color: var(--c-text-soft); cursor: pointer; }

/* ---------- 页脚 ---------- */
.site-footer { background: #11201A; color: rgba(244,248,245,.72); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h5 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-footer a { color: rgba(244,248,245,.7); font-size: 14px; display: block; margin-bottom: 9px; }
.site-footer a:hover { color: #fff; }
.footer-brand { font-size: 14px; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 36px; padding-top: 18px; font-size: 13px; color: rgba(244,248,245,.5); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 内页通用（features/faq/about） ---------- */
.page-hero {
  background: linear-gradient(160deg, #15291F 0%, #1F3A2C 60%, #1F7A5C 130%);
  color: #fff; padding: 76px 0 60px; text-align: center;
}
.page-hero h1 { color: #fff; font-size: clamp(28px, 4.5vw, 44px); letter-spacing: -.02em; }
.page-hero p { color: rgba(244,248,245,.82); max-width: 640px; margin: 14px auto 0; font-size: 17px; }

/* 功能详情交替布局 */
.feature-detail {
  display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center;
  padding: 66px 0; border-bottom: 1px solid var(--c-border);
}
.feature-detail.reverse .fd-text { order: 2; }
.fd-text h2 { font-size: clamp(22px, 3vw, 30px); }
.fd-text > p { color: var(--c-text-soft); }
.fd-list { margin: 20px 0 0; display: flex; flex-direction: column; gap: 11px; }
.fd-list li { display: flex; gap: 10px; color: var(--c-text); font-size: 15px; }
.fd-list li::before { content: "✓"; color: var(--c-forest); font-weight: 800; flex: none; }
.fd-media { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

/* 锚点子导航 */
.subnav {
  position: sticky; top: 66px; z-index: 40;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}
.subnav .container { display: flex; gap: 6px; overflow-x: auto; padding: 10px var(--gut); }
.subnav a { white-space: nowrap; font-size: 14px; color: var(--c-text-soft); padding: 6px 13px; border-radius: 999px; }
.subnav a:hover { background: var(--c-forest-light); color: var(--c-forest); text-decoration: none; }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: 22px 24px; margin-bottom: 16px; box-shadow: var(--shadow-sm); }
.faq-item h3 { font-size: 18px; margin: 0 0 10px; }
.faq-item p { color: var(--c-text-soft); font-size: 15px; margin: 0; }
.faq-item a { color: var(--c-forest); }

/* 关于页 */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 52px; align-items: center; }
.about-grid .about-media { text-align: center; }
.contact-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.contact-card h4 { font-size: 16px; margin: 0 0 6px; }
.contact-card p { font-size: 15px; color: var(--c-text-soft); margin: 0 0 18px; }

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- 协议页条款排版 ---------- */
.legal-meta { font-size: 13px; color: var(--c-text-soft); margin-top: 6px; }
.legal-toc { background: var(--c-forest-light); border-radius: var(--radius); padding: 18px 22px; margin: 10px 0 36px; }
.legal-toc h4 { margin: 0 0 10px; font-size: 15px; color: var(--c-forest); }
.legal-toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 30px; }
.legal-toc a { color: var(--c-forest); font-size: 14px; }
.legal-section { padding: 38px 0; border-bottom: 1px solid var(--c-border); }
.legal-section:last-of-type { border-bottom: none; }
.legal-section h2 { font-size: clamp(20px, 2.6vw, 26px); color: var(--c-forest); margin: 0 0 12px; }
.legal-section h3 { font-size: 17px; margin: 22px 0 8px; color: var(--c-text); }
.legal-section p { color: var(--c-text-soft); font-size: 15px; line-height: 1.9; margin: 0 0 12px; }
.legal-section p b { color: var(--c-text); }
.legal-section ol { margin: 0 0 12px; padding-left: 22px; color: var(--c-text); }
.legal-section ol li { font-size: 15px; line-height: 1.9; margin-bottom: 8px; }
.legal-section ul { margin: 0 0 12px; padding-left: 22px; }
.legal-section ul li { font-size: 15px; line-height: 1.85; color: var(--c-text); margin-bottom: 6px; }
.legal-section ul li::marker { color: var(--c-forest); }
.legal-back { display: inline-block; margin: 8px 0 0; font-size: 14px; color: var(--c-forest); }
@media (max-width: 640px) { .legal-toc ol { columns: 1; } }

/* ---------- 响应式断点 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .trust-row { grid-template-columns: repeat(2, 1fr); }
  .quote-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; padding-top: 64px; padding-bottom: 64px; }
  .hero-actions, .hero-badges { justify-content: center; }
  .nav-links {
    position: absolute; top: 66px; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; padding: 10px var(--gut) 18px; border-bottom: 1px solid var(--c-border);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--c-border); }
  .nav-cta { margin: 12px 0 0; }
  .nav-toggle { display: block; }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .grid-4, .grid-3, .grid-2, .quote-grid, .trust-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-detail { grid-template-columns: 1fr; gap: 28px; padding: 48px 0; }
  .feature-detail.reverse .fd-text { order: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  body { font-size: 16px; }
}