/* =========================================================
   如意品牌站 · 共享样式表 /assets/site.css
   纸面底色 + 朱砂鎏金秩序线 + 靛蓝数据区
   ========================================================= */

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

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

body { margin: 0; }

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

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

h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd { margin: 0; }

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

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

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

/* ---------- 2. 设计变量 ---------- */
:root {
  --cinnabar: #B02A25;
  --cinnabar-deep: #7E1B18;
  --gold: #C9A24B;
  --gold-pale: #E8D7A8;
  --celadon: #7E8C8A;
  --rice: #F6F1E7;
  --paper: #FDFBF7;
  --indigo: #1F2E4A;
  --indigo-pale: #E3E8F0;
  --ink: #221E1C;
  --ink-soft: #4A443F;

  --line: rgba(34, 30, 28, .14);
  --line-strong: rgba(34, 30, 28, .26);
  --line-light: rgba(246, 241, 231, .16);

  --font-display: "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --shell: 1320px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 2px;

  --shadow-soft: 0 1px 2px rgba(34, 30, 28, .05), 0 14px 30px -24px rgba(31, 46, 74, .5);
  --shadow-lift: 0 3px 6px rgba(34, 30, 28, .07), 0 22px 40px -26px rgba(31, 46, 74, .55);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--rice);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(15px, .55vw + 13.6px, 17px);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: .015em;
  color: var(--ink);
}

p { margin: 0 0 1em; }

a {
  color: var(--cinnabar);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

strong { font-weight: 600; }

::selection {
  background: var(--gold-pale);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- 4. 布局与通用组件 ---------- */
.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.section { padding-block: clamp(2.75rem, 6vw, 5rem); }
.section--tight { padding-block: clamp(1.75rem, 4vw, 3rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cinnabar);
}

.eyebrow::before {
  content: "";
  width: .5em;
  height: .5em;
  background: var(--gold);
  transform: rotate(45deg);
  flex: none;
}

.display-1 {
  font-size: clamp(2.5rem, 6.2vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: .01em;
}

.display-2 {
  font-size: clamp(1.85rem, 3.4vw, 2.5rem);
}

.display-3 {
  font-size: clamp(1.3rem, 2vw, 1.5rem);
}

.lede {
  max-width: 36em;
  font-size: clamp(1rem, 1vw + .7rem, 1.12rem);
  line-height: 1.85;
  color: var(--ink-soft);
}

.rule {
  height: 1px;
  border: 0;
  margin: clamp(1.5rem, 3vw, 2.5rem) 0;
  background: linear-gradient(90deg, var(--line-strong), var(--line) 45%, transparent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: .25em .7em;
  border: 1px solid var(--gold);
  background: var(--gold-pale);
  color: var(--indigo);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  line-height: 1.6;
}

.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.1rem, 2vw, 1.6rem);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(201, 162, 75, .55);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .72em 1.3em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .1em;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--cinnabar {
  background: var(--cinnabar);
  border-color: var(--cinnabar-deep);
  color: var(--rice);
}

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

.btn--ghost {
  background: transparent;
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}

.btn--ghost:hover {
  background: var(--cinnabar);
  color: var(--rice);
}

.btn--gold {
  background: var(--gold-pale);
  border-color: var(--gold);
  color: var(--indigo);
}

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

/* 面包屑 */
.breadcrumb {
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--celadon);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--gold);
}

.breadcrumb__link { color: var(--celadon); }

.breadcrumb__link[aria-current="page"] {
  color: var(--ink-soft);
  text-decoration: none;
}

/* 展签式折叠 */
.fold {
  border-top: 1px solid var(--line);
}

.fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--indigo);
  transition: color .18s var(--ease);
}

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

.fold__summary::after {
  content: "＋";
  color: var(--gold);
  font-size: .9rem;
  line-height: 1;
}

.fold[open] .fold__summary::after { content: "－"; }
.fold__summary:hover { color: var(--cinnabar); }

.fold__body {
  padding: 0 0 1.3rem;
  color: var(--ink-soft);
  font-size: .95rem;
  line-height: 1.85;
}

.fold__body > *:last-child { margin-bottom: 0; }

/* 数据表 */
.data-table {
  font-size: .9rem;
  background: var(--paper);
}

.data-table th,
.data-table td {
  padding: .75rem .9rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--indigo);
  background: var(--indigo-pale);
  border-bottom-color: rgba(31, 46, 74, .2);
}

.data-table tbody tr:nth-child(even) td { background: rgba(232, 215, 168, .18); }

.data-table td [data-mono],
.data-table .mono {
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

/* 页内筛选 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
}

.filter-chip {
  padding: .45em .95em;
  border: 1px solid rgba(31, 46, 74, .25);
  background: var(--paper);
  color: var(--indigo);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.filter-chip:hover { border-color: var(--gold); }

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

[data-filter-hidden="true"] { display: none !important; }

/* 图片容器 */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--indigo-pale);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.img-frame > img,
.img-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame--square { aspect-ratio: 1 / 1; }
.img-frame--photo { aspect-ratio: 4 / 3; }
.img-frame--portrait { aspect-ratio: 3 / 4; }
.img-frame--wide { aspect-ratio: 16 / 9; }
.img-frame--banner { aspect-ratio: 21 / 9; }
.img-frame--tall { aspect-ratio: 2 / 3; }

/* 入场显现 */
[data-reveal] {
  transition: opacity .45s var(--ease), transform .45s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal][data-revealed="false"] {
  opacity: 0;
  transform: translateY(14px);
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 120;
  padding: .75rem 1.1rem;
  background: var(--indigo);
  color: var(--rice);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  text-decoration: none;
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(246, 241, 231, .95);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: background-color .24s var(--ease);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
  padding-block: 1rem;
  transition: padding-block .24s var(--ease);
}

.site-header[data-condensed="true"] {
  background: rgba(253, 251, 247, .97);
  border-bottom-color: rgba(201, 162, 75, .6);
}

.site-header[data-condensed="true"] .site-header__inner { padding-block: .55rem; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: var(--ink);
  text-decoration: none;
  flex: none;
}

.brand:hover { text-decoration: none; }

.brand__seal {
  display: grid;
  place-items: center;
  width: 2.65rem;
  height: 2.65rem;
  flex: none;
  background: var(--cinnabar);
  border: 1px solid var(--cinnabar-deep);
  color: var(--rice);
  font-family: var(--font-display);
  font-size: .95rem;
  letter-spacing: .02em;
  line-height: 1;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: .2em;
  color: var(--ink);
}

.brand__line {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .14em;
  color: var(--celadon);
  white-space: nowrap;
}

/* 右侧功能区 */
.header-aside {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.quarter-mark {
  display: flex;
  align-items: center;
  gap: .45rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--celadon);
  white-space: nowrap;
}

.quarter-mark__value {
  color: var(--indigo);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

/* 导航 */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: .15rem;
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .45rem .6rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--ink);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: .6rem;
  right: .6rem;
  bottom: .18rem;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease), background-color .18s var(--ease);
}

.site-nav__link:hover {
  color: var(--cinnabar);
  text-decoration: none;
}

.site-nav__link:hover::after { transform: scaleX(1); }

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

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

.header-cta {
  font-size: .74rem;
  padding: .6em 1em;
  white-space: nowrap;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .52rem .7rem;
  border: 1px solid rgba(31, 46, 74, .24);
  background: var(--paper);
  color: var(--indigo);
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 15px;
  flex: none;
}

.nav-toggle__bars span {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
}

.nav-toggle[aria-expanded="true"] {
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--rice);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

/* 滚动进度刻度 */
.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(31, 46, 74, .07);
  overflow: hidden;
}

.scroll-meter__fill {
  display: block;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--gold), var(--cinnabar));
  transition: transform .12s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--indigo);
  color: rgba(246, 241, 231, .78);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--cinnabar) 0 26%,
    var(--gold) 26% 50%,
    var(--celadon) 50% 74%,
    var(--gold-pale) 74% 100%);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.35fr .9fr 1.25fr 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 4rem) 0 2rem;
}

.footer-title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-brand__seal {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  margin: 0 0 .9rem;
  background: var(--cinnabar);
  border: 1px solid rgba(232, 215, 168, .5);
  color: var(--rice);
  font-family: var(--font-display);
  font-size: .85rem;
  line-height: 1;
}

.footer-brand__name {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: .18em;
  color: var(--rice);
}

.footer-brand__note {
  margin: 0 0 .9rem;
  max-width: 24ch;
  font-size: .84rem;
  line-height: 1.8;
  color: rgba(246, 241, 231, .62);
}

.footer-brand__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--celadon);
}

.footer-index__list {
  display: grid;
  gap: .55rem;
}

.footer-index__list a {
  font-size: .88rem;
  color: rgba(246, 241, 231, .8);
  transition: color .18s var(--ease);
}

.footer-index__list a:hover {
  color: var(--gold-pale);
  text-decoration: none;
}

.footer-contact__list {
  display: grid;
  gap: .85rem;
}

.footer-contact__label {
  display: block;
  margin-bottom: .15rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--celadon);
}

.footer-contact__value {
  display: block;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(246, 241, 231, .9);
  word-break: break-word;
}

.footer-meta__note {
  margin: 0 0 .9rem;
  font-size: .82rem;
  color: rgba(246, 241, 231, .62);
}

.footer-meta__links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
  margin: 0 0 1.2rem;
}

.footer-meta__links a {
  font-size: .82rem;
  color: rgba(246, 241, 231, .8);
  transition: color .18s var(--ease);
}

.footer-meta__links a:hover {
  color: var(--gold-pale);
  text-decoration: none;
}

.footer-meta__copy {
  margin: 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line-light);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--celadon);
}

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1024px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quarter-mark { display: none; }
}

@media (max-width: 900px) {
  .site-header__inner { padding-block: .7rem; gap: .6rem; }
  .brand__line { display: none; }
  .brand__name { font-size: 1.2rem; }
  .brand__seal { width: 2.3rem; height: 2.3rem; font-size: .85rem; }

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

  .header-cta {
    font-size: .68rem;
    padding: .55em .8em;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 1rem var(--gutter) 1.4rem;
    background: var(--indigo);
    box-shadow: 0 26px 42px -30px rgba(15, 22, 36, .85);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease);
  }

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

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

  .site-nav__item + .site-nav__item { border-top: 1px solid var(--line-light); }

  .site-nav__link {
    display: block;
    padding: .85rem .2rem;
    font-size: .9rem;
    color: var(--rice);
  }

  .site-nav__link::after {
    left: .2rem;
    right: auto;
    width: 1.5rem;
    bottom: .6rem;
    background: var(--gold);
  }

  .site-nav__link:hover { color: var(--gold-pale); }
  .site-nav__link[aria-current="page"] { color: var(--gold-pale); }
  .site-nav__link[aria-current="page"]::after { background: var(--gold-pale); }

  .scroll-meter { height: 2px; }
}

@media (max-width: 640px) {
  .site-footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .img-frame--banner { aspect-ratio: 16 / 9; }
  .img-frame--portrait { aspect-ratio: 4 / 5; }
  .img-frame--tall { aspect-ratio: 3 / 4; }
}

@media (max-width: 480px) {
  .header-cta { display: none; }
}

/* 桌面端：滚动后右侧索引收为等宽竖直刻度 */
@media (min-width: 901px) {
  .site-header[data-condensed="true"] .site-nav__list { gap: 0; }

  .site-header[data-condensed="true"] .site-nav__item + .site-nav__item {
    border-left: 1px solid rgba(31, 46, 74, .16);
  }

  .site-header[data-condensed="true"] .site-nav__link {
    padding: .35rem .55rem;
    font-size: .72rem;
    color: var(--indigo);
  }

  .site-header[data-condensed="true"] .site-nav__link::after {
    left: .55rem;
    right: .55rem;
    bottom: .1rem;
  }
}

/* ---------- 9. 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal],
  [data-reveal][data-revealed="false"] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}