/* 博研命理 · 官网样式
   色值与字体沿用 App 设计真源 prototype-v5/assets/tokens.css：
   暖纸面 + 墨色四级 + 金色仅作强调，圆角 8，无渐变、无发光。 */

:root {
  --paper: #F6F3EE;
  --surface: #FFFFFF;
  --surface-2: #EFEAE1;
  --ink: #1C1B19;
  --ink-2: #5A544C;
  --ink-3: #8A8177;
  --line: #E0D8CC;
  --line-2: #D2C8B8;
  --gold: #B8860B;
  --gold-deep: #8B6914;
  --gold-soft: #F3E4C4;
  --seal: #B03A2E;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 1px 2px rgba(96, 84, 66, .06), 0 8px 24px rgba(96, 84, 66, .08);
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.75 var(--sans);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }

a { color: var(--gold-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; z-index: 99;
}
.skip:focus { left: 8px; top: 8px; }

/* ---------- 导航 ---------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.is-stuck { border-bottom-color: var(--line); }
.nav-in {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 68px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.seal {
  width: 30px; height: 30px; flex: none;
  border: 2px solid var(--seal); border-radius: 5px;
  display: grid; place-items: center;
  font: 600 16px/1 var(--serif); color: var(--seal);
}
/* 页头/页脚品牌图标（2026-10-24 替换原 .seal 文字方块为真实 App 图标） */
.brand-logo {
  width: 30px; height: 30px; flex: none;
  border-radius: 7px;
  display: block;
  object-fit: cover;
}
@media (max-width: 640px) {
  .brand-logo { width: 26px; height: 26px; border-radius: 6px; }
}

.brand b { font: 600 19px/1 var(--serif); letter-spacing: .04em; }

.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a {
  color: var(--ink-2); font-size: 15px; padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a.is-active { color: var(--ink); border-bottom-color: var(--gold); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

.menu-btn {
  display: none; width: 40px; height: 40px; margin-left: auto;
  background: none; border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  color: var(--ink); cursor: pointer;
}
.menu-btn span { display: block; width: 16px; height: 1.5px; background: currentColor; margin: 3px auto; }

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; }
.btn-ghost { border-color: var(--line-2); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink-3); }
.btn-store {
  background: var(--ink); color: #fff; padding: 11px 22px;
  border-radius: var(--radius-sm); display: inline-flex; gap: 11px; align-items: center;
}
.btn-store:hover { background: #000; text-decoration: none; }
.btn-store small { display: block; font-size: 11px; opacity: .72; line-height: 1.2; }
.btn-store strong { display: block; font-size: 16px; font-weight: 600; line-height: 1.25; }
.btn-store svg { width: 22px; height: 22px; flex: none; }

/* ---------- Hero ---------- */

.hero { padding: 72px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--gold-deep); letter-spacing: .08em;
  border: 1px solid var(--gold-soft); background: #FBF7EF;
  padding: 5px 12px; border-radius: 99px; margin-bottom: 22px;
}
h1 {
  font: 600 44px/1.32 var(--serif); letter-spacing: .01em;
  margin: 0 0 18px; max-width: 15em;
}
.lede { font-size: 18px; color: var(--ink-2); margin: 0 0 30px; max-width: 34em; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; gap: 26px; flex-wrap: wrap;
  font-size: 13.5px; color: var(--ink-3);
}
.hero-meta b { color: var(--ink-2); font-weight: 600; }

/* ---------- 手机外壳（纯 CSS，截图用真机原图） ---------- */

.phone {
  position: relative; width: 100%; max-width: 306px; margin: 0 auto;
  aspect-ratio: 1284 / 2778;
  background: #0C0C0F; border-radius: 44px;
  padding: 13px 11px;
  box-shadow: 0 2px 0 rgba(255, 255, 255, .5) inset, var(--shadow);
}
.phone::after {
  content: ""; position: absolute; inset: 0; border-radius: 44px;
  border: 1px solid rgba(28, 27, 25, .18); pointer-events: none;
}
.phone img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: 33px; background: var(--paper);
}
.phone .island {
  position: absolute; top: 22px; left: 50%; transform: translateX(-50%);
  width: 88px; height: 26px; border-radius: 99px; background: #060608; z-index: 2;
}
.phone-cap {
  text-align: center; font-size: 12.5px; color: var(--ink-3);
  margin-top: 14px; font-family: var(--mono); letter-spacing: .02em;
}

/* ---------- 通用区块 ---------- */

section { padding: 76px 0; }
.sec-head { max-width: 46em; margin-bottom: 46px; }
.sec-head h2 { font: 600 32px/1.4 var(--serif); margin: 0 0 12px; letter-spacing: .01em; }
.sec-head p { margin: 0; color: var(--ink-2); font-size: 16.5px; }
.kicker {
  font: 13px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold-deep); margin-bottom: 14px;
}

.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- 差异点 ---------- */

.points { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.point { border-left: 2px solid var(--gold-soft); padding: 2px 0 2px 16px; }
.point h3 { font-size: 15.5px; font-weight: 600; margin: 0 0 6px; }
.point p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.7; }

/* ---------- 功能条 ---------- */

.feat {
  display: grid; grid-template-columns: .82fr 1.18fr;
  gap: 64px; align-items: center; padding: 46px 0;
}
.feat + .feat { border-top: 1px solid var(--line); }
.feat:nth-child(even) .feat-media { order: 2; }
.feat h3 { font: 600 25px/1.45 var(--serif); margin: 0 0 12px; }
.feat-body > p { margin: 0 0 20px; color: var(--ink-2); }
.ticks { list-style: none; padding: 0; margin: 0; }
.ticks li { position: relative; padding-left: 22px; margin: 9px 0; font-size: 15px; color: var(--ink-2); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 8px; height: 8px; border: 1.5px solid var(--gold); border-radius: 2px;
}
.ticks b { color: var(--ink); font-weight: 600; }

/* ---------- 小组件 ---------- */

.wg-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; align-items: end; }
.wg {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; box-shadow: var(--shadow);
}
.wg img { width: 100%; border-radius: 10px; }
.wg figcaption { margin-top: 12px; font-size: 13.5px; color: var(--ink-2); }
.wg figcaption b { display: block; font-size: 14.5px; color: var(--ink); font-weight: 600; margin-bottom: 2px; }

/* ---------- 知识库 ---------- */

.lib { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.lib a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; color: var(--ink); font-size: 15px;
}
.lib a:hover { border-color: var(--line-2); text-decoration: none; background: #FBF9F5; }
.lib span { font: 12px/1 var(--mono); color: var(--ink-3); }

/* ---------- 价格 ---------- */

.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; max-width: 840px; }
.plan {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 26px 22px;
}
.plan.is-pro { border-color: var(--gold); box-shadow: var(--shadow); }
.plan h3 { font: 600 19px/1 var(--serif); margin: 0 0 4px; }
.plan .price { font: 600 30px/1.2 var(--serif); margin: 14px 0 2px; }
.plan .price small { font: 400 14px/1 var(--sans); color: var(--ink-3); }
.plan ul { list-style: none; padding: 0; margin: 16px 0 22px; }
.plan li { padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; color: var(--ink-2); }
.plan li:last-child { border-bottom: 0; }
.tag {
  display: inline-block; font-size: 11.5px; padding: 3px 8px; border-radius: 99px;
  background: var(--gold-soft); color: var(--gold-deep); margin-left: 8px; vertical-align: 2px;
}
.legal-note { font-size: 12.5px; color: var(--ink-3); line-height: 1.85; max-width: 62em; margin-top: 22px; }

/* ---------- FAQ ---------- */

.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0;
  font-weight: 600; font-size: 16.5px; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font: 300 22px/1 var(--mono); color: var(--gold-deep);
}
.faq details[open] summary::after { content: "−"; }
.faq .a { padding: 0 40px 22px 0; color: var(--ink-2); font-size: 15.5px; margin-top: -6px; }

/* ---------- 声明条 ---------- */

.disclaim {
  background: var(--surface-2); border-top: 1px solid var(--line);
  padding: 26px 0; font-size: 14px; color: var(--ink-2);
}
.disclaim p { margin: 0; max-width: 76em; }

/* ---------- 页脚 ---------- */

footer { background: var(--paper); border-top: 1px solid var(--line); padding: 54px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 34px; }
.foot-grid h4 { font-size: 13px; letter-spacing: .1em; color: var(--ink-3); margin: 0 0 14px; font-weight: 600; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin: 8px 0; font-size: 14.5px; }
.foot-grid a { color: var(--ink-2); }
.foot-grid a:hover { color: var(--ink); }
.foot-brand p { font-size: 14px; color: var(--ink-2); max-width: 26em; margin: 14px 0 0; }
.foot-bottom {
  margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: 13px; color: var(--ink-3);
}

/* ---------- 入场动效 ---------- */

/* 动效只在 JS 可用时启用，脚本失效也不能让正文消失 */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 响应式 ---------- */

@media (max-width: 1000px) {
  .points { grid-template-columns: repeat(2, 1fr); }
  .wg-grid { grid-template-columns: repeat(2, 1fr); }
  .lib { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 38px; }
}

@media (max-width: 860px) {
  .nav-links, .nav-cta { display: none; }
  .menu-btn { display: block; }
  .nav.is-open .nav-links {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 68px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 24px 16px;
    margin: 0;
  }
  .nav.is-open .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav.is-open .nav-cta {
    display: flex; position: absolute; top: var(--menu-h, 300px); left: 0; right: 0;
    background: var(--paper); padding: 16px 24px; border-bottom: 1px solid var(--line);
  }
  .hero-grid, .feat { grid-template-columns: 1fr; gap: 36px; }
  .feat:nth-child(even) .feat-media { order: 0; }
  .hero { padding-top: 40px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 56px 0; }
  .sec-head h2 { font-size: 27px; }
}

@media (max-width: 560px) {
  h1 { font-size: 31px; }
  .lede { font-size: 16.5px; }
  .points, .wg-grid, .lib, .plans { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .wrap { padding: 0 18px; }
}