/* ──────────────────────────────────────────────────────────────────────────
   Bob Wang Team — shared site base (V2)
   Extracted from the established inline page styles so every page shares one
   header, navigation, language toggle, buttons, contact band and footer.
   Page-specific layout stays in each page's own <style>.
   ────────────────────────────────────────────────────────────────────────── */

:root {
  --paper: #f3f4ef;
  --paper-deep: #e4e6de;
  --ink: #14181f;
  --ink-soft: #5a5b5c;
  --rule: rgba(20,24,31,0.16);
  --navy: #1a2849;
  --navy-soft: #2c3a5e;
  --gold: #9a7c3c;
  --stone: #3d3a33;
  --serif: "DM Serif Display", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
picture { display: contents; }
.wrap, .site-wrap { max-width: 1280px; margin: 0 auto; padding: 0 56px; }
.rule-label { font-family: var(--sans); font-size: 11px; font-weight: 500; letter-spacing: 0.24em; text-transform: uppercase; color: var(--navy); }
.sr-only { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden!important; clip:rect(0,0,0,0)!important; white-space:nowrap!important; border:0!important; }

/* Chinese-only elements stay hidden unless lang is zh — survives JS errors / first paint */
html:not([lang="zh"]) [data-zh-only] { display: none !important; }
html[lang="en"] .wx-cta { display: none !important; }

/* ── Text links ──────────────────────────────────────── */
.text-link { display: inline-flex; align-items: center; gap: 10px; font-family: var(--sans); font-size: 11.5px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--navy); border-bottom: 1px solid var(--navy); padding-bottom: 4px; text-decoration: none; transition: gap .2s, color .2s, border-color .2s; }
.text-link:hover { color: var(--navy-soft); border-color: var(--navy-soft); gap: 14px; }
html[lang="zh"] .text-link { letter-spacing: 0.06em; font-size: 13px; }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px;
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  cursor: pointer; text-decoration: none; transition: all .2s;
  border: 1.2px solid var(--navy);
}
.btn-primary { background: var(--navy); color: var(--paper); }
.btn-primary:hover { background: var(--navy-soft); }
.btn-ghost { background: transparent; color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--paper); }
html[lang="zh"] .btn { letter-spacing: 0.08em; font-size: 13px; }

/* ── Header ──────────────────────────────────────────── */
header { border-bottom: 1px solid var(--rule); background: var(--paper); }
header .row { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 22px; }
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; }
.brand .mark { width: 48px; height: 48px; border: 1.5px solid var(--gold); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.brand .mark span { font-family: var(--serif); font-size: 24px; color: var(--navy); line-height: 1; letter-spacing: -0.02em; }
.brand .lockup { display: flex; flex-direction: column; line-height: 1; white-space: nowrap; }
.brand .lockup .name { font-family: var(--serif); font-size: 22px; color: var(--navy); letter-spacing: 0.01em; }
.brand .lockup .tag { font-family: var(--serif); font-style: italic; font-size: 13px; color: var(--ink-soft); margin-top: 4px; letter-spacing: 0.02em; }
#primary-nav { display: flex; gap: 30px; align-items: center; }
#primary-nav a {
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink);
  text-decoration: none; padding: 6px 0;
  border-bottom: 1.5px solid transparent; transition: border-color .2s, color .2s;
  white-space: nowrap;
}
#primary-nav a:hover { border-bottom-color: var(--navy); color: var(--navy); }
#primary-nav a:focus-visible, .lang-toggle button:focus-visible, .nav-toggle:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }
#primary-nav a[aria-current="page"] { color: var(--navy); border-bottom-color: var(--navy); }

/* ── Language toggle ─────────────────────────────────── */
.lang-toggle { display: inline-flex; align-items: center; gap: 8px; padding-left: 16px; margin-left: 4px; border-left: 1px solid var(--rule); }
.lang-toggle button {
  background: none; border: none; cursor: pointer; padding: 6px 0;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink);
  border-bottom: 1.5px solid transparent;
  transition: color .2s, border-color .2s;
}
.lang-toggle button[data-active="true"] { color: var(--navy); border-bottom-color: var(--navy); }
.lang-toggle button:hover { color: var(--navy); }
.lang-toggle .sep { color: var(--ink-soft); opacity: 0.45; font-size: 13px; }

/* ── Mobile header tools (hamburger + always-visible lang toggle) ── */
.header-mobile-tools { display: none; align-items: center; gap: 14px; }
.lang-toggle-header { padding-left: 0; margin-left: 0; border-left: none; }
.lang-toggle-header button { padding: 8px 2px; font-size: 14px; }
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  background: transparent; border: 1.2px solid var(--navy);
  cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
  flex-direction: column; gap: 5px;
}
.nav-toggle span { display: block; width: 18px; height: 1.4px; background: var(--navy); transition: transform .25s ease, opacity .2s ease; }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(3.2px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-3.2px) rotate(-45deg); }

/* ── Section base ────────────────────────────────────── */
section { padding: 110px 0; border-top: 1px solid var(--rule); }
.section-head { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 64px; align-items: flex-end; margin-bottom: 64px; }
.section-head h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(36px, 3.4vw, 48px); line-height: 1.06; margin: 16px 0 0; color: var(--ink); letter-spacing: -0.005em; text-wrap: balance; word-break: keep-all; line-break: strict; }
.section-head h2 em { font-style: italic; color: var(--navy); }
.section-head p { margin: 0; max-width: 480px; color: var(--ink-soft); font-size: 16px; line-height: 1.6; }

/* ── Contact band (shared) ───────────────────────────── */
.contact-section { background: var(--navy); color: var(--paper); border-top: none; }
.contact-section .rule-label { color: rgba(248,244,237,0.6); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: flex-start; }
.contact-section h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(40px, 4.4vw, 64px); line-height: 1.02; margin: 18px 0 0; }
.contact-sub { margin-top: 24px; max-width: 460px; font-size: 16px; line-height: 1.6; color: rgba(248,244,237,0.7); }
.channels { display: flex; flex-direction: column; gap: 0; }
.channel { display: flex; align-items: center; gap: 24px; padding: 22px 0; border-bottom: 1px solid rgba(248,244,237,0.18); }
.channel:first-child { padding-top: 0; }
.channel:last-child { border-bottom: none; }
.channel .icon { width: 48px; height: 48px; flex-shrink: 0; border: 1px solid rgba(248,244,237,0.35); display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--paper); }
.channel .label { font-family: var(--sans); font-size: 11px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(248,244,237,0.6); }
.channel .value { font-family: var(--serif); font-size: 26px; margin-top: 4px; color: var(--paper); text-decoration: none; display: block; }
.channel a.value:hover { color: #c9d3e8; }
.copy-link { display: inline-block; margin-top: 8px; background: none; border: 1px solid rgba(248,244,237,0.4); color: var(--paper); font-family: var(--sans); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; padding: 7px 12px; cursor: pointer; }
.copy-link:hover { background: var(--paper); color: var(--navy); }
.address { margin-top: 28px; color: rgba(248,244,237,0.55); font-size: 13px; line-height: 1.6; }

/* ── Page note (e.g. market report data source) ──────── */
.page-note { padding: 32px 0 48px; }
.page-note p { margin: 0; font-family: var(--sans); font-size: 12px; line-height: 1.7; color: var(--ink-soft); }

/* ── Footer (shared) ─────────────────────────────────── */
footer { background: var(--navy); color: rgba(248,244,237,0.55); border-top: 1px solid rgba(248,244,237,0.12); padding: 32px 0 26px; font-size: 12px; }
footer .row { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
footer .row .foot-mark { display: inline-flex; }
footer .row .foot-mark .fm-box { width: 46px; height: 46px; border: 1.2px solid #d4b878; display: flex; align-items: center; justify-content: center; font-family: var(--serif); font-size: 20px; color: rgba(248,244,237,0.92); letter-spacing: -0.02em; }
footer .row .copy { display: flex; gap: 24px; align-items: center; color: rgba(248,244,237,0.55); }
footer .foot-nav { display: flex; gap: 22px; flex-wrap: wrap; }
footer .foot-nav a { color: rgba(248,244,237,0.72); text-decoration: none; font-family: var(--sans); font-size: 11px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; }
footer .foot-nav a:hover { color: var(--paper); }
html[lang="zh"] footer .foot-nav a { letter-spacing: 0.06em; font-size: 12px; }
footer .legal-line { margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(248,244,237,0.10); font-family: var(--sans); font-size: 10.5px; font-weight: 500; letter-spacing: 0.10em; color: rgba(248,244,237,0.42); line-height: 1.5; text-align: left; }
footer .legal-line .sep { color: rgba(248,244,237,0.30); margin: 0 0.55em; }

/* ── Chinese typography ──────────────────────────────── */
html[lang="zh"] {
  --serif: "DM Serif Display", "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --sans: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
}
html[lang="zh"] body { font-feature-settings: normal; }
html[lang="zh"] em { font-style: normal; }
html[lang="zh"] #primary-nav a { letter-spacing: 0.06em; }
html[lang="zh"] .rule-label { letter-spacing: 0.12em; }

/* ── Responsive: narrow desktop ──────────────────────── */
@media (min-width: 1001px) and (max-width: 1120px) {
  #primary-nav { gap: 18px; }
  #primary-nav a { font-size: 12px; letter-spacing: 0.1em; }
  .brand .lockup .name { font-size: 20px; }
  .brand .lockup .tag { font-size: 12px; }
}

/* ── Responsive: tablet + phone — hamburger drawer ───── */
@media (max-width: 1000px) {
  .wrap, .site-wrap { padding: 0 28px; }
  header .row { padding-top: 18px; padding-bottom: 18px; }
  .brand .mark { width: 40px; height: 40px; }
  .brand .mark span { font-size: 19px; }
  .brand .lockup .name { font-size: 18px; }
  .brand .lockup .tag { font-size: 11px; }
  .nav-toggle { display: inline-flex; position: relative; z-index: 110; }
  .header-mobile-tools { display: inline-flex; position: relative; z-index: 110; }
  #primary-nav .lang-toggle { display: none; }
  #primary-nav {
    position: fixed; inset: 0;
    background: var(--paper);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    gap: 0;
    padding: 96px 28px 40px;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
    z-index: 100;
  }
  body.nav-open #primary-nav { transform: translateX(0); }
  #primary-nav a {
    font-family: var(--serif); font-weight: 400;
    font-size: 26px; letter-spacing: 0; text-transform: none;
    color: var(--ink);
    padding: 18px 0; width: 100%;
    border-bottom: 1px solid var(--rule);
  }
  #primary-nav a:hover { border-bottom-color: var(--rule); color: var(--navy); }
  #primary-nav a[aria-current="page"] { border-bottom-color: var(--rule); }
  body.nav-open { overflow: hidden; }

  section { padding: 80px 0; }
  .section-head { grid-template-columns: 1fr; gap: 24px; align-items: flex-start; margin-bottom: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  footer .legal-line { font-size: 10px; letter-spacing: 0.08em; }
}

/* ── Responsive: phone ───────────────────────────────── */
@media (max-width: 560px) {
  .wrap, .site-wrap { padding: 0 22px; }
  section { padding: 60px 0; }
  .section-head { margin-bottom: 32px; gap: 18px; }
  .section-head h2 { font-size: 32px !important; }
  .section-head p { font-size: 17px; line-height: 1.6; }
  .contact-section h2 { font-size: 38px !important; }
  .contact-sub { font-size: 17px; margin-top: 20px; line-height: 1.6; }
  .channel { gap: 18px; padding: 18px 0; }
  .channel .icon { width: 42px; height: 42px; font-size: 16px; }
  .channel .value { font-size: 24px; }
  .address { font-size: 12.5px; margin-top: 22px; }
  footer { padding: 28px 0 24px; }
  footer .row { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 14px 18px; }
  footer .row .foot-mark .fm-box { width: 40px; height: 40px; font-size: 17px; }
  footer .row .copy { gap: 14px; flex-wrap: wrap; }
  footer .foot-nav { gap: 14px 18px; }
  footer .legal-line { font-size: 10.5px !important; letter-spacing: 0.06em !important; line-height: 1.55; margin-top: 14px; padding-top: 14px; }
}
@media (max-width: 380px) {
  .wrap, .site-wrap { padding: 0 18px; }
  .section-head h2 { font-size: 28px !important; }
  .contact-section h2 { font-size: 34px !important; }
  .channel .value { font-size: 22px; }
  .section-head p, .contact-sub { font-size: 16px; }
  .brand .lockup .name { font-size: 16px; }
  .brand .lockup .tag { font-size: 10.5px; }
}