/* ============================================================
   金宝搏中心 · 共享样式 /assets/site.css
   航海日志式品牌手册：刻度轨道、框景、锐利直角与细网格
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--warm-white);
  color: var(--ink-black);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol { margin: 0; padding: 0; list-style: none; }

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

:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

/* ---------- 2. 变量 ---------- */
:root {
  --deep-sea: #0B1F3A;
  --ink-navy: #142B4A;
  --champagne: #D4AF6A;
  --light-gold: #F2D9A0;
  --coral: #E86A4A;
  --warm-white: #FBF8F2;
  --light-gray: #E8E4DC;
  --mid-gray: #6B7280;
  --ink-black: #1A1A1A;
  --chart-teal: #2E6F7E;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", Inter, system-ui, -apple-system, "Segoe UI", sans-serif;

  --shell: 1240px;
  --rail-w: 76px;
  --line: rgba(11, 31, 58, 0.14);
  --line-gold: rgba(212, 175, 106, 0.38);
  --shadow-soft: 0 18px 40px -28px rgba(11, 31, 58, 0.55);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.28s;
}

/* ---------- 3. 排版 ---------- */
h1,
h2,
h3,
h4 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--deep-sea);
}

h1 { font-size: clamp(2rem, 4.6vw, 3.5rem); }
h2 { font-size: clamp(1.55rem, 2.7vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.06rem; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--chart-teal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

a:hover { color: var(--coral); }

strong { font-weight: 700; }

.lede {
  font-size: clamp(1rem, 1.4vw, 1.16rem);
  line-height: 1.85;
  color: #33415a;
  max-width: 62ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--champagne);
  margin: 0 0 14px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--champagne);
}

.numeral {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 0.9;
  color: var(--champagne);
  letter-spacing: -0.02em;
}

.rule {
  height: 1px;
  border: 0;
  margin: clamp(26px, 4vw, 46px) 0;
  background: linear-gradient(90deg, var(--champagne) 0 64px, var(--line) 64px 100%);
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.section-head__title { margin: 0; }

.section-head__note {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mid-gray);
  margin: 0;
}

/* ---------- 4. 布局骨架 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 44px);
}

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 52px); }

.section--ink {
  background: var(--deep-sea);
  color: rgba(251, 248, 242, 0.82);
}

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

.section--ink a { color: var(--light-gold); }

.section--gray { background: var(--light-gray); }

.section--grid-lines {
  background-image: linear-gradient(90deg, rgba(11, 31, 58, 0.055) 1px, transparent 1px);
  background-size: 64px 100%;
}

/* ---------- 5. 面包屑 ---------- */
.breadcrumb {
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(232, 228, 220, 0.42);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mid-gray);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(212, 175, 106, 0.9);
}

.breadcrumb__item a { color: var(--mid-gray); text-decoration: none; }
.breadcrumb__item a:hover { color: var(--coral); }
.breadcrumb__item[aria-current="page"] { color: var(--deep-sea); font-weight: 700; }

/* ---------- 6. 按钮与标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid var(--deep-sea);
  color: var(--deep-sea);
  background: transparent;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn:hover { transform: translateY(-2px); color: var(--deep-sea); }

.btn--gold {
  background: var(--champagne);
  border-color: var(--champagne);
  color: var(--deep-sea);
  font-weight: 700;
}

.btn--gold:hover { background: var(--light-gold); border-color: var(--light-gold); }

.btn--ghost {
  border-color: var(--line-gold);
  color: var(--light-gold);
}

.btn--ghost:hover { background: rgba(212, 175, 106, 0.14); color: var(--light-gold); }

.btn--coral {
  border-color: var(--coral);
  background: var(--coral);
  color: #fff;
  font-weight: 700;
}

.btn--coral:hover { background: #d4563a; border-color: #d4563a; color: #fff; }

.btn--block { width: 100%; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--line-gold);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--champagne);
  background: rgba(212, 175, 106, 0.08);
}

/* ---------- 7. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--deep-sea);
  color: var(--warm-white);
  border-bottom: 1px solid var(--line-gold);
  transition: box-shadow var(--dur) var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 14px 30px -22px rgba(11, 31, 58, 0.95);
}

.header-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 44px);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
  border-bottom: 1px solid rgba(212, 175, 106, 0.16);
  transition: min-height var(--dur) var(--ease);
}

.site-header.is-scrolled .header-top { min-height: 54px; }

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

.brand-sign:hover { color: inherit; }

.brand-sign__glyph {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--champagne);
  color: var(--champagne);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
  flex: none;
}

.brand-sign__text { display: grid; gap: 1px; }

.brand-sign__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.brand-sign__line {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: rgba(242, 217, 160, 0.72);
}

.header-top__locator {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(251, 248, 242, 0.6);
  white-space: nowrap;
}

.header-top__dot {
  width: 7px;
  height: 7px;
  background: var(--coral);
  transform: rotate(45deg);
  flex: none;
}

.header-bottom {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 62px;
}

.primary-nav { flex: 1 1 auto; min-width: 0; }

.primary-nav__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(12px, 1.7vw, 28px);
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 2px;
  color: rgba(251, 248, 242, 0.78);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 3px;
  height: 1px;
  background: var(--champagne);
  transition: right var(--dur) var(--ease);
}

.primary-nav__link:hover { color: var(--light-gold); }
.primary-nav__link:hover::after { right: 0; }

.primary-nav__link[aria-current="page"] { color: var(--light-gold); }

.primary-nav__link[aria-current="page"]::after {
  right: 0;
  height: 2px;
  background: var(--coral);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line-gold);
  color: var(--light-gold);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  height: 1px;
  background: var(--light-gold);
}

.nav-toggle__label { line-height: 1; }

.header-cta {
  flex: none;
  padding: 10px 20px;
  border: 1px solid var(--champagne);
  color: var(--light-gold);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.header-cta:hover {
  background: var(--champagne);
  color: var(--deep-sea);
}

/* ---------- 8. 品牌刻度轨道 ---------- */
.brand-rail { display: none; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 120;
  padding: 10px 20px;
  background: var(--champagne);
  color: var(--deep-sea);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 12px; color: var(--deep-sea); }

/* ---------- 9. 页脚 ---------- */
.site-footer {
  background: var(--deep-sea);
  color: rgba(251, 248, 242, 0.76);
  border-top: 1px solid var(--line-gold);
  background-image: linear-gradient(180deg, rgba(20, 43, 74, 0.9) 0%, rgba(11, 31, 58, 1) 70%);
}

.site-footer .shell { padding-block: clamp(40px, 5vw, 68px) 24px; }

.footer-grid {
  display: grid;
  gap: clamp(26px, 3.2vw, 44px);
  grid-template-columns: 1fr;
}

.footer-col { display: grid; align-content: start; gap: 14px; }

.footer-col__title {
  margin: 0;
  padding-bottom: 11px;
  border-bottom: 1px solid rgba(212, 175, 106, 0.26);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--light-gold);
}

.footer-col__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(251, 248, 242, 0.52);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--warm-white);
  text-decoration: none;
}

.footer-brand:hover { color: var(--light-gold); }

.footer-brand__glyph {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--champagne);
  color: var(--champagne);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.footer-brand__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(251, 248, 242, 0.62);
  max-width: 34ch;
}

.footer-brand__icp {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(242, 217, 160, 0.6);
}

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

.footer-nav a {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: rgba(251, 248, 242, 0.74);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.footer-nav a:hover {
  color: var(--light-gold);
  padding-left: 5px;
}

.footer-nav--marked a::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 1px;
  margin-right: 9px;
  vertical-align: middle;
  background: var(--champagne);
}

.footer-contact { display: grid; gap: 14px; }

.footer-contact__item {
  display: grid;
  gap: 4px;
  justify-items: start;
}

.footer-contact__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(242, 217, 160, 0.62);
}

.footer-contact__value {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--warm-white);
  word-break: break-word;
}

.copy-btn {
  margin-top: 4px;
  padding: 4px 12px;
  border: 1px solid rgba(212, 175, 106, 0.45);
  color: rgba(242, 217, 160, 0.86);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.copy-btn:hover {
  background: rgba(212, 175, 106, 0.16);
  color: var(--light-gold);
}

.copy-btn.is-copied {
  background: var(--coral);
  border-color: var(--coral);
  color: #fff;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 18px;
  border-top: 1px solid rgba(212, 175, 106, 0.2);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(251, 248, 242, 0.54);
}

.footer-base__copy,
.footer-base__icp { margin: 0; }

.footer-legal { display: flex; flex-wrap: wrap; gap: 16px; }

.footer-legal a {
  color: rgba(251, 248, 242, 0.6);
  text-decoration: none;
}

.footer-legal a:hover { color: var(--light-gold); }

.to-top {
  margin-left: auto;
  padding: 7px 16px;
  border: 1px solid rgba(212, 175, 106, 0.4);
  color: rgba(242, 217, 160, 0.85);
  font-size: 12px;
  letter-spacing: 0.14em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.to-top:hover {
  background: var(--champagne);
  color: var(--deep-sea);
}

/* ---------- 10. 框景 ---------- */
.frame {
  position: relative;
  padding: clamp(20px, 3.2vw, 44px);
  border: 1px solid var(--line-gold);
  background: rgba(251, 248, 242, 0.6);
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--champagne);
}

.frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.frame::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.frame--ink {
  background: rgba(20, 43, 74, 0.55);
  border-color: rgba(212, 175, 106, 0.5);
}

/* ---------- 11. 卡片与网格 ---------- */
.card-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: 1fr;
}

.card {
  position: relative;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--champagne);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
  border-color: var(--line-gold);
}

.card__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.card__index {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: rgba(212, 175, 106, 0.85);
}

.card__title {
  margin: 0;
  font-size: 1.14rem;
}

.card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #3c4658;
}

.card__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mid-gray);
}

/* ---------- 12. 面板 / 列表 / 步骤 ---------- */
.panel {
  padding: clamp(22px, 3vw, 36px);
  background: var(--ink-navy);
  color: rgba(251, 248, 242, 0.84);
  border: 1px solid rgba(212, 175, 106, 0.34);
}

.panel h2,
.panel h3 { color: var(--warm-white); }

.data-list { display: grid; }

.data-list__row {
  display: grid;
  grid-template-columns: minmax(96px, 0.5fr) 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.data-list__row:first-child { border-top: 1px solid var(--line); }

.data-list__key {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--mid-gray);
}

.data-list__val { color: var(--ink-black); }

.steps {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
  grid-template-columns: 1fr;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 22px 22px 22px 26px;
  border-left: 2px solid var(--champagne);
  background: rgba(232, 228, 220, 0.44);
}

.step__num {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--champagne);
  margin-bottom: 8px;
}

.step__title { margin: 0 0 6px; font-size: 1.05rem; }

.step__text {
  margin: 0;
  font-size: 14.5px;
  color: #3c4658;
}

/* ---------- 13. 折叠与筛选 ---------- */
.accordion {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.accordion__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  background: var(--warm-white);
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--deep-sea);
  cursor: pointer;
  list-style: none;
}

.accordion__q::-webkit-details-marker { display: none; }

.accordion__q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--champagne);
  border-bottom: 2px solid var(--champagne);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.accordion[open] .accordion__q::after { transform: rotate(-135deg); }

.accordion__q:hover { background: rgba(242, 217, 160, 0.28); }

.accordion__a {
  padding: 16px 20px 20px;
  background: #fff;
  font-size: 14.8px;
  line-height: 1.85;
  color: #3c4658;
}

.accordion__a p:last-child { margin-bottom: 0; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.filter-chip {
  padding: 8px 18px;
  border: 1px solid var(--line-gold);
  color: #46506a;
  font-size: 13px;
  letter-spacing: 0.1em;
  background: transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.filter-chip:hover { border-color: var(--champagne); color: var(--deep-sea); }

.filter-chip[aria-pressed="true"] {
  background: var(--coral);
  border-color: var(--coral);
  color: #fff;
}

/* ---------- 14. 图片容器 ---------- */
.figure {
  position: relative;
  overflow: hidden;
  background: var(--ink-navy);
  border: 1px solid var(--line-gold);
}

.figure--wide { aspect-ratio: 16 / 9; }
.figure--card { aspect-ratio: 4 / 3; }
.figure--tall { aspect-ratio: 3 / 4; }

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  background: linear-gradient(180deg, rgba(11, 31, 58, 0) 0%, rgba(11, 31, 58, 0.88) 100%);
  color: rgba(251, 248, 242, 0.86);
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

.figure__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: var(--champagne);
  color: var(--deep-sea);
  font-size: 11px;
  letter-spacing: 0.16em;
}

/* ---------- 15. 动效 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.42s var(--ease), transform 0.42s var(--ease);
}

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

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1023px) {
  .site-header { position: sticky; }
  .header-bottom { position: relative; }

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

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    padding: 10px clamp(18px, 5vw, 30px) 22px;
    background: var(--ink-navy);
    border-top: 1px solid rgba(212, 175, 106, 0.3);
    border-bottom: 1px solid rgba(212, 175, 106, 0.3);
    max-height: min(72vh, 520px);
    overflow-y: auto;
    box-shadow: 0 22px 34px -22px rgba(0, 0, 0, 0.7);
  }

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

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(212, 175, 106, 0.14);
  }

  .primary-nav__link::after { display: none; }

  .primary-nav__link[aria-current="page"] { color: var(--champagne); }

  .header-cta { padding: 9px 15px; font-size: 12px; }
}

@media (min-width: 640px) {
  .card-grid--2,
  .card-grid--3,
  .card-grid--asym { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .brand-rail {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    width: var(--rail-w);
    height: 100vh;
    padding: 20px 0 26px;
    background: linear-gradient(180deg, #0B1F3A 0%, #142B4A 100%);
    border-right: 1px solid var(--line-gold);
    pointer-events: none;
  }

  .brand-rail__mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--champagne);
    color: var(--champagne);
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    line-height: 1;
  }

  .brand-rail__word {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-display);
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: 0.34em;
    color: rgba(242, 217, 160, 0.86);
  }

  .brand-rail__track {
    position: relative;
    flex: 1 1 auto;
    width: 3px;
    margin: 20px 0;
    background: rgba(212, 175, 106, 0.2);
  }

  .brand-rail__progress {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 0;
    background: linear-gradient(180deg, var(--light-gold), var(--coral));
  }

  .brand-rail__coord {
    writing-mode: vertical-rl;
    font-size: 10.5px;
    letter-spacing: 0.24em;
    color: rgba(251, 248, 242, 0.44);
  }

  .card-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  .card-grid--asym { grid-template-columns: 1.4fr 1fr 1fr; }

  .footer-grid { grid-template-columns: 1.35fr 1fr 1.3fr 1fr; }

  .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .section--grid-lines { background-size: 80px 100%; }
}

@media (max-width: 639px) {
  .header-top__locator { display: none; }
  .data-list__row { grid-template-columns: 1fr; gap: 4px; }
  .to-top { margin-left: 0; }
}

/* ---------- 17. 减少动效 ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .card:hover,
  .btn:hover { transform: none; }
}