/* ==========================================================================
   超凡国际 · 共享样式表 /assets/site.css
   框架式导航 + 非对称编辑部版式 + 自然矿物色
   ========================================================================== */

:root {
  --ink: #0B2A45;
  --ink-2: #123B5E;
  --blue: #1F6DA3;
  --copper: #C9884C;
  --copper-soft: #E7BC85;
  --jade: #0B7A5E;
  --jade-bright: #34C7A0;
  --mist: #EDEFF2;
  --paper: #F7F4EE;
  --stone: #66737E;
  --moss: #8C9C90;
  --clay: #A9583C;

  --font-sans: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --font-kai: "LXGW WenKai", "Kaiti SC", KaiTi, STKaiti, "Songti SC", Georgia, serif;

  --rail-w: 76px;
  --header-h: 140px;
  --gutter: clamp(18px, 4vw, 44px);
  --wrap: 1240px;

  --radius-s: 10px;
  --radius-m: 14px;
  --radius-l: 18px;

  --line-copper: rgba(201, 136, 76, 0.5);
  --line-cool: rgba(11, 42, 69, 0.12);
  --shadow-soft: 0 18px 40px -30px rgba(11, 42, 69, 0.7);
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 14px);
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ol, ul, fieldset {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, svg, video { display: block; max-width: 100%; }

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--ink);
  background-color: var(--mist);
  background-image:
    linear-gradient(rgba(102, 115, 126, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 115, 126, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.01em;
  text-wrap: balance;
  color: var(--ink);
}

p { text-wrap: pretty; }

strong { font-weight: 700; }

#main-content {
  display: block;
  scroll-margin-top: calc(var(--header-h) + 14px);
}

::selection {
  background: rgba(201, 136, 76, 0.32);
  color: var(--ink);
}

/* ---------- 焦点可见 ---------- */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.site-header :focus-visible,
.site-footer :focus-visible,
.frame-rail :focus-visible,
.skip-link:focus-visible {
  outline: 2px solid var(--copper-soft);
  outline-offset: 3px;
}

/* ---------- 屏幕阅读器 ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 300;
  padding: 12px 20px;
  border-radius: var(--radius-s);
  background: var(--copper);
  color: #241207;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transform: translateY(-180%);
  transition: transform 0.22s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

@media (min-width: 981px) {
  .skip-link { left: calc(var(--rail-w) + 14px); }
}

/* ---------- 顶部框架 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding-left: var(--rail-w);
  background: linear-gradient(180deg, #0B2A45 0%, #0d3050 100%);
  color: var(--paper);
  border-bottom: 1px solid var(--line-copper);
  transition: box-shadow 0.28s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 16px 34px -26px rgba(4, 18, 32, 0.95);
}

.scroll-progress {
  position: absolute;
  left: var(--rail-w);
  bottom: -1px;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--jade-bright), var(--copper));
  transition: width 0.12s linear;
  pointer-events: none;
}

.header-top {
  display: grid;
  grid-template-columns: auto minmax(240px, 340px) 1fr auto;
  align-items: center;
  gap: clamp(14px, 2.2vw, 34px);
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 12px var(--gutter);
  min-height: 92px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border: 1px solid var(--copper);
  border-radius: var(--radius-s);
  background: rgba(201, 136, 76, 0.12);
  color: var(--copper-soft);
  font-family: var(--font-kai);
  font-size: 21px;
  line-height: 1;
}

.brand-text { display: grid; gap: 2px; }

.brand-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: rgba(247, 244, 238, 0.6);
}

/* 服务区域快查 */
.area-lookup { display: grid; gap: 5px; }

.area-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--copper-soft);
}

.area-field {
  display: flex;
  align-items: stretch;
  border: 1px solid rgba(231, 188, 133, 0.42);
  border-radius: var(--radius-s);
  background: rgba(247, 244, 238, 0.07);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.area-field:focus-within {
  border-color: var(--copper-soft);
  box-shadow: 0 0 0 3px rgba(231, 188, 133, 0.18);
}

.area-input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--paper);
}

.area-input::placeholder { color: rgba(247, 244, 238, 0.44); }

.area-btn {
  flex: 0 0 auto;
  border: 0;
  border-left: 1px solid rgba(231, 188, 133, 0.32);
  background: rgba(201, 136, 76, 0.18);
  color: var(--copper-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 0 14px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.area-btn:hover { background: var(--copper); color: #241207; }

.area-note {
  font-size: 11.5px;
  line-height: 1.55;
  color: rgba(247, 244, 238, 0.64);
}

.area-note.is-open { color: var(--jade-bright); }
.area-note.is-empty { color: var(--copper-soft); }

/* 右侧动作 */
.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 24px);
  justify-self: end;
}

.member-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--copper);
  border-radius: 999px;
  background: rgba(201, 136, 76, 0.14);
  color: var(--copper-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.member-toggle::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade-bright);
  flex: 0 0 auto;
}

.member-toggle:hover { background: var(--copper); color: #241207; }

.member-toggle.is-pulsed { animation: copperPulse 0.62s ease-out; }

@keyframes copperPulse {
  0% { box-shadow: 0 0 0 0 rgba(201, 136, 76, 0.7); }
  100% { box-shadow: 0 0 0 14px rgba(201, 136, 76, 0); }
}

.header-phone { display: grid; gap: 1px; text-align: right; }

.phone-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(247, 244, 238, 0.55);
}

.phone-number {
  font-family: var(--font-mono);
  font-size: 15.5px;
  letter-spacing: 0.04em;
  color: var(--paper);
  white-space: nowrap;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid rgba(231, 188, 133, 0.42);
  border-radius: var(--radius-s);
  background: rgba(247, 244, 238, 0.06);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.12em;
  cursor: pointer;
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: 0 0 auto;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--copper-soft);
  transition: transform 0.24s ease;
}

.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }

.site-header[data-open] .nav-toggle-bars::before { transform: translateY(5.2px) rotate(45deg); }
.site-header[data-open] .nav-toggle-bars::after { transform: translateY(-5.2px) rotate(-45deg); }

/* 导航 */
.site-nav {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  border-top: 1px solid rgba(231, 188, 133, 0.22);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 2px;
}

.nav-item {
  animation: navRise 0.5s cubic-bezier(0.2, 0.7, 0.3, 1) both;
}

.nav-item:nth-child(1) { animation-delay: 0.04s; }
.nav-item:nth-child(2) { animation-delay: 0.1s; }
.nav-item:nth-child(3) { animation-delay: 0.16s; }
.nav-item:nth-child(4) { animation-delay: 0.22s; }
.nav-item:nth-child(5) { animation-delay: 0.28s; }
.nav-item:nth-child(6) { animation-delay: 0.34s; }

@keyframes navRise {
  from { opacity: 0; transform: translateY(9px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 14px;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius-s) var(--radius-s) 0 0;
  color: rgba(247, 244, 238, 0.78);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--jade-bright);
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(247, 244, 238, 0.07);
}

.nav-link[aria-current="page"] {
  color: #ffffff;
  border-bottom-color: var(--copper);
  background: linear-gradient(180deg, rgba(201, 136, 76, 0.2), rgba(201, 136, 76, 0));
}

.nav-link[aria-current="page"] .nav-num { color: var(--copper-soft); }

/* 左侧框架竖栏 */
.frame-rail {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 95;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(180deg, #082032 0%, #0B2A45 46%, #082032 100%);
  border-right: 1px solid var(--line-copper);
}

.rail-mark {
  display: grid;
  place-items: center;
  width: 100%;
  height: var(--header-h);
  border-bottom: 1px solid rgba(231, 188, 133, 0.24);
  flex: 0 0 auto;
}

.rail-mark span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(201, 136, 76, 0.85);
  border-radius: var(--radius-s);
  color: var(--copper-soft);
  font-family: var(--font-kai);
  font-size: 18px;
}

.rail-nav { width: 100%; padding: 16px 0 0; }

.rail-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.rail-item { display: block; }

.rail-link {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 38px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  color: rgba(247, 244, 238, 0.52);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.rail-link::after {
  content: attr(data-label);
  position: absolute;
  top: 50%;
  left: calc(100% + 10px);
  z-index: 6;
  padding: 6px 10px;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  box-shadow: 0 10px 22px -14px rgba(0, 0, 0, 0.6);
}

.rail-link:hover { color: #ffffff; border-color: rgba(201, 136, 76, 0.5); }

.rail-link:hover::after,
.rail-link:focus-visible::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.rail-link[aria-current="page"] {
  color: var(--jade-bright);
  border-color: rgba(52, 199, 160, 0.6);
  background: rgba(11, 122, 94, 0.2);
}

.rail-link[aria-current="page"] .rail-num { color: var(--jade-bright); }

.rail-foot {
  margin-top: auto;
  padding-bottom: 22px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.28em;
  color: rgba(247, 244, 238, 0.32);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  padding-left: var(--rail-w);
  background: linear-gradient(180deg, #0B2A45 0%, #071c2e 100%);
  color: rgba(247, 244, 238, 0.76);
  border-top: 1px solid var(--line-copper);
  font-size: 14.5px;
  line-height: 1.8;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(231, 188, 133, 0.16) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  opacity: 0.55;
}

.footer-grid {
  position: relative;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(42px, 5.5vw, 76px) var(--gutter) clamp(30px, 3.6vw, 48px);
  display: grid;
  grid-template-columns: 1.25fr 1fr 1.15fr;
  gap: clamp(26px, 4vw, 60px);
}

.footer-eyebrow {
  display: block;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--copper-soft);
}

.footer-logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.footer-pledge {
  margin-top: 12px;
  max-width: 26em;
  font-family: var(--font-kai);
  font-size: 16px;
  line-height: 2;
  color: rgba(247, 244, 238, 0.84);
}

.footer-hours {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(231, 188, 133, 0.22);
  font-size: 13px;
  color: rgba(247, 244, 238, 0.56);
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  color: rgba(247, 244, 238, 0.82);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-links a::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border: 1px solid var(--jade-bright);
  border-radius: 1px;
  transform: rotate(45deg);
  opacity: 0.7;
}

.footer-links a:hover {
  color: #ffffff;
  border-bottom-color: var(--copper);
}

.footer-contact-list {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-contact-list li { display: grid; gap: 2px; }

.contact-key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: rgba(231, 188, 133, 0.78);
}

.contact-val {
  color: var(--paper);
  word-break: break-word;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(231, 188, 133, 0.22);
}

.footer-legal a {
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(247, 244, 238, 0.22);
  color: rgba(247, 244, 238, 0.66);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-legal a:hover {
  color: var(--copper-soft);
  border-bottom-color: var(--copper-soft);
}

.footer-base {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid rgba(231, 188, 133, 0.18);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(247, 244, 238, 0.5);
}

.footer-base-note { color: rgba(247, 244, 238, 0.36); }

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--paper { background: var(--paper); }
.section--moss { background: rgba(140, 156, 144, 0.16); }

.section--ink {
  background: linear-gradient(150deg, var(--ink) 0%, var(--ink-2) 100%);
  color: rgba(247, 244, 238, 0.84);
}

.section--ink h1,
.section--ink h2,
.section--ink h3 { color: var(--paper); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--stone);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--copper);
  flex: 0 0 auto;
}

.section--ink .eyebrow { color: var(--copper-soft); }

.section-title {
  margin-top: 14px;
  font-size: clamp(24px, 2.8vw, 34px);
}

.lead {
  max-width: 40em;
  margin-top: 14px;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.95;
  color: var(--ink-2);
}

.section--ink .lead { color: rgba(247, 244, 238, 0.78); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--copper {
  background: var(--copper);
  border-color: #a86c33;
  color: #241207;
}

.btn--copper:hover { background: #bf7d40; }

.btn--ink {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.btn--ink:hover { background: var(--ink-2); }

.btn--ghost {
  background: transparent;
  border-color: rgba(11, 42, 69, 0.28);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--copper);
  color: var(--ink-2);
}

.btn--jade {
  background: var(--jade);
  border-color: #09634d;
  color: #ffffff;
}

.btn--jade:hover { background: #0a6a52; }

.btn--sm {
  padding: 9px 16px;
  font-size: 13px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb li { display: inline-flex; align-items: center; }

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(102, 115, 126, 0.5);
}

.breadcrumb a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover { border-bottom-color: currentColor; }

.breadcrumb [aria-current="page"] { color: var(--ink); }

/* ---------- 正文 ---------- */
.prose { max-width: 68ch; }

.prose h2 {
  margin: 2.2em 0 0.6em;
  font-size: clamp(22px, 2.4vw, 30px);
}

.prose h3 {
  margin: 1.8em 0 0.5em;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--ink-2);
}

.prose p { margin-bottom: 1.15em; }

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
}

.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }

.prose a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(31, 109, 163, 0.45);
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.prose a:hover {
  color: var(--ink-2);
  text-decoration-color: var(--copper);
}

.prose blockquote {
  margin: 1.6em 0;
  padding-left: 18px;
  border-left: 2px solid var(--copper);
  font-family: var(--font-kai);
  font-size: 18px;
  line-height: 2;
  color: var(--ink-2);
}

.prose strong { color: var(--ink); }

/* ---------- 网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 28px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(20px, 3.4vw, 48px);
  align-items: start;
}

.split--reverse { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }

/* ---------- 卡片与标记 ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line-cool);
  border-radius: var(--radius-m);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--shadow-soft);
}

.num-badge {
  display: inline-grid;
  place-items: center;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border: 1px solid rgba(11, 122, 94, 0.45);
  border-radius: var(--radius-s);
  background: rgba(11, 122, 94, 0.07);
  color: var(--jade);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(102, 115, 126, 0.35);
  border-radius: 999px;
  background: rgba(247, 244, 238, 0.72);
  color: var(--stone);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}

.tag--jade {
  border-color: rgba(11, 122, 94, 0.38);
  background: rgba(11, 122, 94, 0.08);
  color: var(--jade);
}

.tag--clay {
  border-color: rgba(169, 88, 60, 0.38);
  background: rgba(169, 88, 60, 0.08);
  color: var(--clay);
}

/* ---------- 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(201, 136, 76, 0.32);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, var(--ink-2) 0%, #2c4148 58%, #3d4a41 100%);
}

.media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.02);
}

.media--ratio-16-9 { aspect-ratio: 16 / 9; }
.media--ratio-4-5 { aspect-ratio: 4 / 5; }
.media--ratio-1-1 { aspect-ratio: 1 / 1; }
.media--ratio-3-2 { aspect-ratio: 3 / 2; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-kai);
  font-size: 14px;
  line-height: 1.9;
  color: var(--stone);
}

/* ---------- 显现与返回顶部 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
}

html.js [data-reveal].is-in {
  opacity: 1;
  transform: translateY(0);
}

.to-top {
  position: fixed;
  right: clamp(14px, 2.4vw, 28px);
  bottom: clamp(14px, 2.4vw, 28px);
  z-index: 80;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(201, 136, 76, 0.6);
  border-radius: 50%;
  background: var(--ink);
  color: var(--copper-soft);
  font-family: var(--font-mono);
  font-size: 15px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.26s ease, transform 0.26s ease, visibility 0.26s, background 0.2s ease;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover { background: var(--ink-2); }

/* ---------- 平板 ---------- */
@media (max-width: 1180px) {
  .header-top { grid-template-columns: auto minmax(200px, 280px) 1fr auto; }
  .brand-tagline { letter-spacing: 0.14em; }
}

/* ---------- 移动 / 平板竖屏 ---------- */
@media (max-width: 980px) {
  :root { --header-h: 0px; }

  body { padding-left: 0; }

  .site-header { padding-left: 0; }

  .scroll-progress { left: 0; }

  .frame-rail { display: none; }

  .site-footer { padding-left: 0; }

  .header-top {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "lookup lookup"
      "actions actions";
    gap: 10px 14px;
    padding-block: 12px;
    min-height: 0;
  }

  .brand { grid-area: brand; }
  .brand-mark { width: 38px; height: 38px; font-size: 18px; }
  .brand-name { font-size: 17px; }

  .nav-toggle { grid-area: toggle; display: inline-flex; }

  .area-lookup { grid-area: lookup; }

  .header-actions {
    grid-area: actions;
    justify-self: stretch;
    justify-content: space-between;
    gap: 12px;
  }

  .header-phone { text-align: left; }
  .phone-number { font-size: 14px; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100vh - 96px);
    overflow: auto;
    padding: 14px var(--gutter) 24px;
    background: linear-gradient(180deg, #0a2439 0%, #082032 100%);
    border-top: 1px solid rgba(201, 136, 76, 0.34);
    border-bottom: 1px solid var(--line-copper);
    box-shadow: 0 24px 44px -30px rgba(0, 0, 0, 0.9);
  }

  .site-header[data-open] .site-nav { display: block; }

  .nav-list { flex-direction: column; gap: 4px; }

  .nav-link {
    width: 100%;
    padding: 13px 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    border-radius: var(--radius-s);
    font-size: 15px;
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--copper);
    background: rgba(201, 136, 76, 0.16);
  }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-base { flex-direction: column; gap: 6px; }

  .split,
  .split--reverse { grid-template-columns: minmax(0, 1fr); }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .brand-tagline { display: none; }

  .area-note { font-size: 11px; }

  .header-actions { flex-wrap: wrap; }

  .member-toggle { font-size: 12px; padding: 8px 14px; }

  .footer-grid { gap: 30px; }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .nav-item { opacity: 1; transform: none; }

  html.js [data-reveal],
  html.js [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }

  .to-top { transform: none; }
}