/* ============================================================
   太阳鑫娱乐 · 共享站点样式 /assets/site.css
   暖光画册体系：地平线页头 + 留白式浅色页脚
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }

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

a { color: inherit; }

[hidden] { display: none !important; }

:root {
  --sun: #F2762E;
  --sun-deep: #B8501C;
  --gold: #FFC24B;
  --pale-gold: #FFE7B8;
  --ink: #14203A;
  --slate: #2B3A5C;
  --sand: #FBF5EA;
  --sand-deep: #EFE2CB;
  --jade: #1FA98A;
  --jade-mist: #D8F1E9;
  --paper: #FFFDF9;
  --ochre: #B5321F;

  --rule: rgba(43, 58, 92, 0.16);
  --rule-soft: rgba(43, 58, 92, 0.09);

  --font-head: "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", system-ui, sans-serif;
  --font-body: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", var(--font-head);
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shell: 1180px;
  --rail: clamp(18px, 4vw, 56px);
  --header-h: 68px;
}

/* ---------- 基础排版 ---------- */

body {
  background-color: var(--sand);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
}

h1 { font-size: clamp(44px, 7vw, 96px); line-height: 1.05; }
h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.14; }
h3 { font-size: 22px; line-height: 1.3; font-weight: 800; }
h4 { font-size: 17px; font-weight: 800; line-height: 1.4; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

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

#main-content { display: block; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Skip link ---------- */

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 500;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 3px;
  transform: translateY(-180%);
  transition: transform 0.22s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ============================================================
   页头 · 地平线
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(251, 245, 234, 0.985), rgba(251, 245, 234, 0.94));
  border-bottom: 1px solid var(--rule-soft);
  box-shadow: 0 14px 30px -30px rgba(20, 32, 58, 0.55);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--sun) 42%, var(--jade) 100%);
  opacity: 0.92;
  pointer-events: none;
}

.site-header__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px var(--rail);
  min-height: var(--header-h);
}

/* 品牌署名 */
.brand {
  position: relative;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-right: auto;
  padding: 3px 0;
  text-decoration: none;
  color: inherit;
}

.brand__sun {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 32%, var(--pale-gold) 0%, var(--gold) 38%, var(--sun) 72%, var(--sun-deep) 100%);
  box-shadow: 0 0 0 4px rgba(242, 118, 46, 0.10), 0 8px 18px -8px rgba(242, 118, 46, 0.85);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.brand__sun-core {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px solid rgba(255, 253, 249, 0.55);
}

.brand:hover .brand__sun,
.brand:focus-visible .brand__sun {
  transform: scale(1.07);
  box-shadow: 0 0 0 6px rgba(242, 118, 46, 0.14), 0 10px 22px -8px rgba(242, 118, 46, 0.92);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand__tagline {
  margin-top: 3px;
  font-size: 10.5px;
  letter-spacing: 0.26em;
  color: var(--sun-deep);
}

/* 栏目路径 */
.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item { list-style: none; }

.site-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 8px 11px 10px;
  border-radius: 3px;
  color: var(--slate);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: rgba(43, 58, 92, 0.42);
  transition: color 0.24s var(--ease);
}

.site-nav__label { display: block; }

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--sun), var(--gold));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease);
}

.site-nav__link:hover {
  color: var(--ink);
  background: rgba(239, 226, 203, 0.55);
}

.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link:hover .site-nav__num { color: var(--sun-deep); }

.site-nav__link[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

.site-nav__link[aria-current="page"] .site-nav__num { color: var(--sun); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 右侧工具入口 */
.header-tools {
  display: flex;
  align-items: center;
  padding-left: clamp(8px, 1.4vw, 20px);
  border-left: 1px solid var(--rule);
}

.header-tools__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header-tools__item { list-style: none; }

.header-tools__link {
  display: inline-block;
  padding: 6px 9px;
  border-radius: 3px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--slate);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.header-tools__link:hover {
  color: var(--sun-deep);
  background: rgba(255, 231, 184, 0.7);
}

/* 移动端按钮 */
.nav-toggle {
  position: relative;
  z-index: 3;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.7);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.nav-toggle:hover { background: var(--pale-gold); border-color: var(--sun); }

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle__bar:nth-child(2) { width: 68%; }

.site-header[data-open] .nav-toggle__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.nav-toggle__text { white-space: nowrap; }

/* 遮罩与进度 */

.site-header__scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background: rgba(20, 32, 58, 0.34);
}

.site-header__progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  z-index: 4;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--sun) 55%, var(--jade));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  transition: transform 0.12s linear;
}

/* ---------- 移动 / 平板抽屉 ---------- */

@media (max-width: 1079px) {
  :root { --header-h: 62px; }

  body { padding-bottom: calc(62px + env(safe-area-inset-bottom, 0px)); }

  .header-tools { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    margin-left: 0;
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--header-h) + 36px) var(--rail) 48px;
    overflow-y: auto;
    background:
      radial-gradient(120% 70% at 100% 0%, rgba(255, 194, 75, 0.30), transparent 62%),
      radial-gradient(80% 60% at 0% 100%, rgba(31, 169, 138, 0.14), transparent 60%),
      linear-gradient(200deg, var(--paper), var(--sand) 46%, var(--sand-deep) 100%);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transition: opacity 0.3s var(--ease), transform 0.32s var(--ease), visibility 0.32s linear;
  }

  .site-header[data-open] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

  .site-nav__list {
    position: relative;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding-left: 28px;
  }

  .site-nav__list::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 16px;
    bottom: 16px;
    width: 1px;
    background: linear-gradient(180deg, var(--gold), var(--sun) 50%, var(--jade));
    opacity: 0.72;
  }

  .site-nav__item {
    position: relative;
    border-bottom: 1px solid var(--rule-soft);
  }

  .site-nav__item::before {
    content: "";
    position: absolute;
    left: -27px;
    top: 50%;
    width: 9px;
    height: 9px;
    margin-top: -4.5px;
    border-radius: 50%;
    background: var(--paper);
    border: 1px solid rgba(43, 58, 92, 0.35);
    transition: background-color 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
  }

  .site-nav__item[data-current]::before,
  .site-nav__item:has(> a[aria-current="page"])::before {
    background: var(--sun);
    border-color: var(--sun-deep);
    box-shadow: 0 0 0 4px rgba(242, 118, 46, 0.16);
  }

  .site-nav__link {
    flex-direction: row;
    align-items: baseline;
    gap: 14px;
    padding: 18px 4px;
    border-radius: 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--ink);
  }

  .site-nav__link:hover { background: transparent; }

  .site-nav__num {
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--sun-deep);
  }

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

@media (max-width: 600px) {
  .brand__tagline { display: none; }
  .brand__name { font-size: 16px; }
}

/* ============================================================
   页脚 · 留白收束
   ============================================================ */

.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(56px, 9vw, 128px);
  background: linear-gradient(180deg, var(--sand) 0%, #F6EBD9 42%, var(--sand-deep) 100%);
  color: var(--ink);
}

.site-footer::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -26%;
  width: min(620px, 82vw);
  height: min(620px, 82vw);
  background: radial-gradient(circle, rgba(255, 194, 75, 0.34), rgba(242, 118, 46, 0.10) 46%, transparent 70%);
  pointer-events: none;
}

.site-footer__path {
  position: relative;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--sun) 42%, var(--jade) 100%);
  opacity: 0.8;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(0, 1.35fr);
  gap: clamp(36px, 5vw, 72px);
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(44px, 6vw, 82px) var(--rail) clamp(26px, 4vw, 46px);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  max-width: 430px;
}

.brand--footer .brand__name { font-size: 19px; }

.site-footer__claim {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.site-footer__claim span { color: var(--sun-deep); }

.site-footer__origin {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid rgba(184, 80, 28, 0.35);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.72);
  color: var(--sun-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background-color 0.24s var(--ease), transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.totop:hover {
  background: var(--pale-gold);
  border-color: var(--sun);
  transform: translateY(-2px);
}

.totop::after {
  content: "↑";
  font-family: var(--font-mono);
  font-size: 13px;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}

.footer-col__title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(43, 58, 92, 0.22);
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--slate);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-col__link {
  display: inline-block;
  max-width: 100%;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--slate);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color 0.2s var(--ease);
}

.footer-col__link:hover {
  color: var(--sun-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.footer-col__link--meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  line-height: 1.55;
}

.footer-col__key {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(43, 58, 92, 0.66);
}

.footer-col__value { overflow-wrap: anywhere; }

.site-footer__base {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--rail) clamp(22px, 3vw, 34px);
  border-top: 1px solid rgba(43, 58, 92, 0.14);
  color: rgba(43, 58, 92, 0.86);
}

.site-footer__legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}

.site-footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 12.5px;
}

.site-footer__legal-links a {
  color: var(--slate);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.site-footer__legal-links a:hover { color: var(--sun-deep); }

/* 移动端底部快捷条 */
.mobile-quickbar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  grid-template-columns: 1fr 1fr;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(255, 253, 249, 0.94);
  border-top: 1px solid rgba(43, 58, 92, 0.14);
  box-shadow: 0 -10px 26px -22px rgba(20, 32, 58, 0.7);
}

.mobile-quickbar__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-decoration: none;
}

.mobile-quickbar__item + .mobile-quickbar__item {
  border-left: 1px solid rgba(43, 58, 92, 0.12);
}

.mobile-quickbar__item--accent {
  color: var(--sun-deep);
  background: linear-gradient(180deg, rgba(255, 231, 184, 0.55), rgba(255, 231, 184, 0.95));
}

@media (max-width: 1079px) {
  .mobile-quickbar { display: grid; }
}

@media (max-width: 900px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
}

@media (max-width: 560px) {
  .site-footer__cols { grid-template-columns: 1fr; }
  .site-footer__base { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   页面级共享容器与组件
   ============================================================ */

.page-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--rail);
}

.page-shell--wide { max-width: 1360px; }
.page-shell--narrow { max-width: 760px; }

.section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

.section--sand { background: linear-gradient(180deg, var(--sand), #F7EEDF 100%); }

.section--deep { background: linear-gradient(180deg, var(--sand-deep), #E7D6B8 100%); }

.section--glow {
  background:
    radial-gradient(90% 80% at 86% 8%, rgba(255, 194, 75, 0.36), transparent 62%),
    radial-gradient(70% 70% at 4% 92%, rgba(31, 169, 138, 0.16), transparent 60%),
    var(--sand);
}

.section--ink {
  background: radial-gradient(120% 100% at 14% 0%, #1E2E4F, var(--ink) 62%);
  color: #EDE7DC;
}

.section--ink h2,
.section--ink h3,
.section--ink h4 { color: #FFF6E4; }

.section--ink .lead,
.section--ink .prose { color: rgba(237, 231, 220, 0.88); }

.lead {
  max-width: 34em;
  font-size: clamp(18px, 1.9vw, 22px);
  line-height: 1.7;
  color: var(--slate);
}

.prose {
  max-width: 38em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--slate);
}

.prose > p + p { margin-top: 1.2em; }

.prose h2 {
  margin-top: 2em;
  margin-bottom: 0.6em;
  font-size: clamp(24px, 2.6vw, 32px);
  color: var(--ink);
}

.prose h3 {
  margin-top: 1.7em;
  margin-bottom: 0.5em;
  color: var(--ink);
}

.prose ul,
.prose ol {
  margin-top: 1em;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.prose li {
  position: relative;
  padding-left: 1.4em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--sun);
}

.prose a {
  color: var(--sun-deep);
  text-underline-offset: 4px;
}

.prose strong { color: var(--ink); font-weight: 700; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--sun-deep);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--sun), var(--gold));
}

.chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.6em;
  padding: 0.28em 0.55em;
  border-radius: 2px;
  background: var(--pale-gold);
  color: var(--sun-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid rgba(242, 118, 46, 0.22);
  border-radius: 999px;
  background: rgba(255, 231, 184, 0.8);
  color: var(--sun-deep);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tag--jade {
  background: var(--jade-mist);
  border-color: rgba(31, 169, 138, 0.3);
  color: #0F6B57;
}

.tag--ink {
  background: rgba(20, 32, 58, 0.08);
  border-color: rgba(20, 32, 58, 0.16);
  color: var(--ink);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 0.24s var(--ease), background-color 0.24s var(--ease), color 0.24s var(--ease), box-shadow 0.24s var(--ease), border-color 0.24s var(--ease);
}

.btn--primary {
  background: linear-gradient(120deg, var(--sun), #FF934D 58%, var(--gold));
  color: #2A1206;
  box-shadow: 0 12px 26px -14px rgba(242, 118, 46, 0.9);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px -16px rgba(242, 118, 46, 0.95);
}

.btn--ghost {
  background: rgba(255, 253, 249, 0.72);
  border-color: rgba(43, 58, 92, 0.22);
  color: var(--ink);
}

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

.btn--jade {
  background: var(--jade);
  color: #04231B;
}

.btn--jade:hover {
  transform: translateY(-2px);
  background: #25BE9C;
}

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

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 34px);
  font-size: 12.5px;
  color: rgba(43, 58, 92, 0.82);
}

.breadcrumb__link {
  color: var(--slate);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--sun-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb__sep {
  font-family: var(--font-mono);
  color: rgba(43, 58, 92, 0.4);
}

.breadcrumb__current {
  color: var(--ink);
  font-weight: 600;
}

/* 材质层 */
.glass-panel {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 4px;
  background: rgba(255, 253, 249, 0.55);
  backdrop-filter: blur(12px) saturate(1.1);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  box-shadow: 0 20px 40px -34px rgba(20, 32, 58, 0.6);
  transition: transform 0.32s var(--ease), background-color 0.32s var(--ease);
}

.glass-panel:hover {
  transform: translateY(-4px);
  background: rgba(255, 253, 249, 0.72);
}

.solid-panel {
  padding: clamp(20px, 3vw, 32px);
  border-radius: 4px;
  background: var(--paper);
  box-shadow: 0 1px 0 rgba(43, 58, 92, 0.06), 0 24px 48px -42px rgba(20, 32, 58, 0.75);
}

/* 网格 */
.grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 32px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.grid--offset > *:nth-child(even) {
  margin-top: clamp(14px, 2.4vw, 32px);
}

@media (max-width: 860px) {
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
  .grid--offset > *:nth-child(even) { margin-top: 0; }
}

/* 图片容器基础规则 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: 3px;
  background-color: var(--sand-deep);
  background-image:
    radial-gradient(60% 60% at 74% 18%, rgba(255, 194, 75, 0.55), transparent 62%),
    linear-gradient(160deg, #E3D0AF, #F6EBD9);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--shade::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 52%, rgba(20, 32, 58, 0.42));
  pointer-events: none;
}

/* 装饰与状态 */
.divider {
  height: 1px;
  border: 0;
  margin-block: clamp(28px, 4vw, 52px);
  background: linear-gradient(90deg, var(--sun), var(--gold) 30%, rgba(43, 58, 92, 0.14) 72%, transparent);
}

.path-rail {
  position: relative;
  padding-left: 26px;
}

.path-rail::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--sun), var(--jade));
  opacity: 0.8;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

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

/* ---------- 降级 ---------- */

@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;
  }

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