/* ==========================================================================
   开元财神捕鱼 · 共享样式 /assets/site.css
   深海墨蓝底 · 暗金骨架 · 朱红印章 · 铜绿状态
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  background-color: #061420;
  scroll-behavior: smooth;
}

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

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

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

a { color: inherit; text-decoration: none; }

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

:root {
  --abyss-900: #061420;
  --abyss-800: #04101A;
  --abyss-700: #0C2438;
  --tide-glass: rgba(18, 58, 77, 0.62);
  --gold-500: #D8A24A;
  --gold-200: #F2D9A0;
  --cinnabar-600: #B83A2E;
  --patina-500: #2E7D6F;
  --ivory-100: #F2ECDD;
  --mist-400: #A9BEC9;
  --shell-050: #EFE7D6;

  --gold-line: rgba(216, 162, 74, 0.26);
  --gold-line-strong: rgba(216, 162, 74, 0.55);
  --glass-line: rgba(242, 236, 221, 0.14);

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --page-max: 1320px;
  --page-pad: 72px;
  --radius-card: 20px;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 0.48s;
}

body {
  position: relative;
  z-index: 0;
  background-color: transparent;
  color: var(--ivory-100);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 水纹底层 */
body::before {
  content: "";
  position: fixed;
  inset: -12%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 42% at 16% 10%, rgba(18, 58, 77, 0.85), transparent 68%),
    radial-gradient(48% 40% at 84% 76%, rgba(46, 125, 111, 0.22), transparent 70%),
    radial-gradient(72% 52% at 52% 112%, rgba(216, 162, 74, 0.10), transparent 70%);
  animation: tide-drift 52s var(--ease-out) infinite alternate;
}

@keyframes tide-drift {
  from { transform: translate3d(-1.6%, -1%, 0) scale(1.02); }
  to   { transform: translate3d(1.6%, 1.6%, 0) scale(1.07); }
}

:focus-visible {
  outline: 2px solid var(--gold-200);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(184, 58, 46, 0.85);
  color: #FBEFE6;
}

/* ---------------------------------------------------------------
   基础工具
   --------------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  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;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 220;
  transform: translate(-50%, -180%);
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--cinnabar-600);
  color: #FBEFE6;
  font-size: 14px;
  letter-spacing: 0.12em;
  box-shadow: 0 14px 30px -14px rgba(0, 0, 0, 0.9);
  transition: transform 0.22s var(--ease-out);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translate(-50%, 0); }

.container {
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

.page-main {
  position: relative;
  z-index: 1;
}

#main-content { scroll-margin-top: 24px; }

/* ---------------------------------------------------------------
   进度条
   --------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: rgba(216, 162, 74, 0.14);
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cinnabar-600), var(--gold-500) 56%, var(--gold-200));
}

/* ---------------------------------------------------------------
   头部
   --------------------------------------------------------------- */
.site-header {
  position: relative;
  z-index: 40;
  background: linear-gradient(180deg,
      rgba(4, 16, 26, 0.9) 0%,
      rgba(4, 16, 26, 0.55) 56%,
      rgba(4, 16, 26, 0) 100%);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 190px; height: 2px;
  background: linear-gradient(90deg, var(--cinnabar-600), rgba(184, 58, 46, 0));
}

.header-ribbon {
  padding: 18px 0 16px;
  border-bottom: 1px solid rgba(216, 162, 74, 0.18);
  background: linear-gradient(180deg, rgba(4, 16, 26, 0.92), rgba(4, 16, 26, 0.32));
}

.header-ribbon__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr) minmax(0, auto);
  align-items: center;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand__seal {
  position: relative;
  flex: 0 0 42px;
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  transform: rotate(-4deg);
  background: linear-gradient(155deg, #C44434, #8E2A20);
  box-shadow:
    inset 0 0 0 1px rgba(242, 217, 160, 0.5),
    0 6px 20px -8px rgba(184, 58, 46, 0.85);
  transition: transform 0.32s var(--ease-out);
}

.brand:hover .brand__seal { transform: rotate(4deg); }

.brand__seal::before {
  content: "";
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid var(--gold-200);
}

.brand__seal::after {
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 1px;
  background: var(--gold-200);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.24;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.12em;
  color: var(--ivory-100);
}

.brand__sub {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold-500);
}

.ribbon-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.ribbon-motto {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.22em;
  color: rgba(242, 236, 221, 0.7);
  white-space: nowrap;
}

.ribbon-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.ribbon-contact__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.ribbon-contact__label {
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: rgba(216, 162, 74, 0.85);
}

.ribbon-contact__val {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(242, 236, 221, 0.8);
}

/* 悬浮胶囊导航 */
.header-nav-wrap {
  position: relative;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 18px var(--page-pad) 22px;
}

.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 10px 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--gold-line);
  background: linear-gradient(118deg, rgba(18, 58, 77, 0.8), rgba(12, 36, 56, 0.58));
  box-shadow:
    0 22px 48px -30px rgba(0, 0, 0, 0.95),
    inset 0 1px 0 rgba(242, 217, 160, 0.14);
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
}

.primary-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

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

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: rgba(242, 236, 221, 0.8);
  transition: color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.nav-link:hover {
  color: var(--gold-200);
  background: rgba(216, 162, 74, 0.12);
}

.nav-link[aria-current="page"] {
  color: var(--gold-200);
  background: rgba(216, 162, 74, 0.1);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-500), rgba(216, 162, 74, 0.22));
}

.nav-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 50%; top: 2px;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--cinnabar-600);
  box-shadow: 0 0 8px rgba(184, 58, 46, 0.9);
}

.nav-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(184, 58, 46, 0.9);
  background: rgba(184, 58, 46, 0.16);
  color: var(--ivory-100);
  font-size: 13px;
  letter-spacing: 0.12em;
  white-space: nowrap;
  transition: background-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.nav-cta::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  border: 1px solid var(--gold-200);
  background: rgba(184, 58, 46, 0.95);
}

.nav-cta:hover {
  background: var(--cinnabar-600);
  box-shadow: 0 12px 26px -14px rgba(184, 58, 46, 0.95);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--gold-line);
  color: var(--gold-200);
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: background-color 0.2s var(--ease-out);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.24s var(--ease-out), top 0.24s var(--ease-out);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after  { top: 6px; }

.nav-toggle__label {
  font-size: 12px;
  letter-spacing: 0.24em;
  line-height: 1;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { top: 0; transform: rotate(-45deg); }

/* ---------------------------------------------------------------
   页脚
   --------------------------------------------------------------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding: 72px 0 0;
  margin-top: 96px;
  background: linear-gradient(180deg, #071726 0%, #04101A 64%);
  border-top: 1px solid var(--gold-line-strong);
  color: var(--ivory-100);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -70px; bottom: -70px;
  width: 440px; height: 440px;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 50% 50%,
      transparent 0 17px,
      rgba(216, 162, 74, 0.10) 17px 18px,
      transparent 18px 27px,
      rgba(216, 162, 74, 0.07) 27px 28px,
      transparent 28px 38px,
      rgba(216, 162, 74, 0.05) 38px 39px,
      transparent 39px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(circle at 68% 68%, #000 0%, transparent 66%);
  mask-image: radial-gradient(circle at 68% 68%, #000 0%, transparent 66%);
}

.footer-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-pad) 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr 1.3fr;
  gap: 48px;
  align-items: start;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--ivory-100);
}

.footer-brand__motto {
  margin-top: 14px;
  max-width: 22em;
  font-size: 13px;
  line-height: 1.95;
  letter-spacing: 0.1em;
  color: rgba(242, 236, 221, 0.62);
}

.footer-col__title {
  margin-bottom: 18px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  color: rgba(216, 162, 74, 0.9);
}

.footer-list {
  display: grid;
  gap: 10px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 236, 221, 0.74);
  transition: color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.footer-link:hover {
  color: var(--gold-200);
  transform: translateX(2px);
}

.footer-link--flag {
  color: rgba(242, 236, 221, 0.92);
}

.footer-link--flag::after {
  content: "";
  order: -1;
  flex: 0 0 3px;
  width: 3px; height: 14px;
  border-radius: 2px;
  background: var(--cinnabar-600);
}

.footer-contact {
  display: grid;
  gap: 12px;
}

.footer-contact__row {
  display: grid;
  grid-template-columns: 3.6em minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.footer-contact__key {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: rgba(216, 162, 74, 0.85);
}

.footer-contact__val {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.75;
  word-break: break-all;
  color: rgba(242, 236, 221, 0.78);
}

.footer-contact__val--text {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 400;
  word-break: normal;
}

.footer-note {
  margin-top: 20px;
  max-width: 30ch;
  font-size: 12px;
  line-height: 1.95;
  color: rgba(169, 190, 201, 0.8);
}

.footer-legal {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(216, 162, 74, 0.16);
}

.footer-legal__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 20px var(--page-pad) 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--mist-400);
}

.footer-legal__meta { letter-spacing: 0.06em; }

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-legal__link {
  color: var(--mist-400);
  transition: color 0.2s var(--ease-out);
}

.footer-legal__link:hover { color: var(--gold-200); }

/* ---------------------------------------------------------------
   区块与分屏
   --------------------------------------------------------------- */
.section {
  position: relative;
  padding: 96px 0;
}

.section--tight { padding: 64px 0; }

.section--abyss { background: var(--abyss-900); }
.section--tide { background: var(--abyss-700); }

.section--shell {
  background: var(--shell-050);
  color: #14242E;
}

.section--shell .display-title { color: #08202C; }
.section--shell .lede { color: rgba(20, 36, 46, 0.78); }
.section--shell .body-text { color: rgba(20, 36, 46, 0.74); }
.section--shell .eyebrow { color: #8A5A12; }
.section--shell .eyebrow::before { background: #8A5A12; }
.section--shell .divider-gold {
  background: linear-gradient(90deg, rgba(184, 58, 46, 0.45), rgba(184, 58, 46, 0));
}
.section--shell .mono { color: #33251A; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  gap: 56px;
  align-items: start;
}

.split--reverse {
  grid-template-columns: minmax(0, 62fr) minmax(0, 38fr);
}

.split--reverse .split__aside { order: 2; }

.split__aside { min-width: 0; }
.split__main { min-width: 0; }

.grid {
  display: grid;
  gap: 28px;
}

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

/* ---------------------------------------------------------------
   排版
   --------------------------------------------------------------- */
.display-title {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.6vw, 64px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0.04em;
  color: var(--ivory-100);
  text-wrap: balance;
}

.display-title--lg {
  font-size: clamp(40px, 6vw, 76px);
}

.title-side {
  display: inline-block;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 11px;
  letter-spacing: 0.3em;
  line-height: 1.2;
  color: rgba(216, 162, 74, 0.78);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: rgba(216, 162, 74, 0.92);
}

.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--gold-500);
}

.lede {
  max-width: 62ch;
  font-size: 18px;
  line-height: 1.9;
  color: rgba(242, 236, 221, 0.82);
}

.body-text {
  max-width: 68ch;
  color: rgba(242, 236, 221, 0.76);
}

.body-text + .body-text { margin-top: 18px; }

.mono {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--ivory-100);
}

.seal-tag {
  display: inline-block;
  padding: 3px 10px 4px;
  border-radius: 4px;
  background: var(--cinnabar-600);
  box-shadow: inset 0 0 0 1px rgba(242, 217, 160, 0.35);
  color: #FBEFE6;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.1em;
}

.divider-gold {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--gold-line-strong), rgba(216, 162, 74, 0));
}

.coin-rule {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(216, 162, 74, 0.5);
}

.coin-rule::before,
.coin-rule::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--gold-line);
}

.coin-rule__coin {
  position: relative;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 1px solid currentColor;
}

.coin-rule__coin::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: currentColor;
}

/* ---------------------------------------------------------------
   按钮
   --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  letter-spacing: 0.12em;
  transition: background-color 0.2s var(--ease-out),
              color 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out),
              box-shadow 0.2s var(--ease-out),
              transform 0.2s var(--ease-out);
}

.btn--gold {
  background: linear-gradient(135deg, var(--gold-200), var(--gold-500));
  color: #10202B;
  font-weight: 600;
}

.btn--gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 38px -20px rgba(216, 162, 74, 0.95);
}

.btn--ghost {
  border-color: var(--gold-line-strong);
  background: rgba(18, 58, 77, 0.4);
  color: var(--gold-200);
}

.btn--ghost:hover { background: rgba(216, 162, 74, 0.14); }

.btn--seal {
  border-color: rgba(184, 58, 46, 0.9);
  background: rgba(184, 58, 46, 0.18);
  color: var(--ivory-100);
}

.btn--seal:hover { background: var(--cinnabar-600); }

/* ---------------------------------------------------------------
   面包屑
   --------------------------------------------------------------- */
.breadcrumb { padding: 22px 0 0; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-400);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(216, 162, 74, 0.5);
}

.breadcrumb__link { color: var(--mist-400); transition: color 0.2s var(--ease-out); }
.breadcrumb__link:hover { color: var(--gold-200); }

.breadcrumb__current { color: rgba(242, 236, 221, 0.9); }

/* ---------------------------------------------------------------
   图片容器基础
   --------------------------------------------------------------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card);
  border: 1px solid rgba(216, 162, 74, 0.22);
  isolation: isolate;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(242, 217, 160, 0.14), transparent 62%),
    linear-gradient(160deg, #0F2C40, #061420 78%);
}

.media-frame > img,
.media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-frame--wide > img,
.media-frame--wide .media-frame__img { aspect-ratio: 21 / 9; }

.media-frame--tall > img,
.media-frame--tall .media-frame__img { aspect-ratio: 4 / 5; }

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 52%, rgba(4, 16, 26, 0.66));
}

/* ---------------------------------------------------------------
   横向卡片流
   --------------------------------------------------------------- */
.rail {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.rail > * {
  flex: 0 0 clamp(240px, 32vw, 340px);
  scroll-snap-align: start;
  min-width: 0;
}

.rail::-webkit-scrollbar { height: 6px; }
.rail::-webkit-scrollbar-track { background: rgba(242, 236, 221, 0.06); border-radius: 999px; }
.rail::-webkit-scrollbar-thumb { background: rgba(216, 162, 74, 0.32); border-radius: 999px; }

/* ---------------------------------------------------------------
   筛选组件
   --------------------------------------------------------------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(242, 236, 221, 0.18);
  color: var(--mist-400);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: color 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out),
              background-color 0.2s var(--ease-out);
}

.filter-btn:hover {
  color: var(--gold-200);
  border-color: var(--gold-line-strong);
}

.filter-btn[aria-pressed="true"] {
  color: #10202B;
  font-weight: 600;
  border-color: transparent;
  background: linear-gradient(135deg, var(--gold-200), var(--gold-500));
}

.filter-empty {
  padding: 26px 0;
  font-size: 14px;
  color: var(--mist-400);
}

[data-filter-item][hidden],
[data-tier-panel][hidden] { display: none !important; }

/* ---------------------------------------------------------------
   显现
   --------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ---------------------------------------------------------------
   响应式
   --------------------------------------------------------------- */
@media (max-width: 1180px) {
  .ribbon-motto { display: none; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.3fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 1080px) {
  .split,
  .split--reverse {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }
  .split--reverse .split__aside { order: 0; }

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

@media (max-width: 1000px) {
  :root { --page-pad: 40px; }
  .ribbon-contact { display: none; }
  .header-ribbon__inner { grid-template-columns: minmax(0, 1fr) minmax(0, auto); }
  .ribbon-meta { display: none; }
}

@media (max-width: 900px) {
  :root { --page-pad: 22px; }

  body { font-size: 16px; line-height: 1.82; }

  .section { padding: 68px 0; }
  .section--tight { padding: 48px 0; }

  .header-ribbon { padding: 12px 0 10px; }
  .header-ribbon__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .brand__seal { flex-basis: 36px; width: 36px; height: 36px; border-radius: 10px; }
  .brand__name { font-size: 16px; letter-spacing: 0.1em; }
  .brand__sub { font-size: 10px; letter-spacing: 0.26em; }

  .header-nav-wrap { padding: 12px var(--page-pad) 16px; }

  .header-nav-inner {
    padding: 8px 8px 8px 16px;
    gap: 12px;
    justify-content: flex-end;
  }

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

  .nav-cta { padding: 9px 15px; font-size: 12.5px; letter-spacing: 0.08em; }

  .primary-nav {
    display: block;
    position: absolute;
    top: calc(100% + 10px);
    left: var(--page-pad);
    right: var(--page-pad);
    z-index: 60;
    max-height: 72vh;
    overflow-y: auto;
    padding: 10px;
    border-radius: 22px;
    border: 1px solid var(--gold-line);
    background: linear-gradient(160deg, rgba(12, 36, 56, 0.98), rgba(6, 20, 32, 0.99));
    box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition:
      opacity 0.22s var(--ease-out),
      transform 0.22s var(--ease-out),
      visibility 0.22s linear;
  }

  .primary-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 15px;
    letter-spacing: 0.08em;
  }

  .nav-link[aria-current="page"]::before {
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
  }

  .nav-link[aria-current="page"]::after {
    left: 16px;
    right: 16px;
    bottom: 7px;
  }

  .display-title { letter-spacing: 0.03em; }
  .lede { font-size: 16.5px; }

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

  .rail > * { flex-basis: min(78vw, 300px); }

  .site-footer { padding-top: 52px; margin-top: 68px; }
  .footer-inner { padding-bottom: 40px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .footer-brand { grid-column: auto; }
  .footer-brand__name { font-size: 22px; }
  .footer-note { max-width: none; }
  .footer-legal__inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (max-width: 420px) {
  .nav-cta { padding: 9px 12px; }
  .nav-toggle { padding: 10px 12px; }
  .nav-toggle__label { display: none; }
}

@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;
  }

  body::before { animation: none !important; }

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