/* ============================================
   新利体育CN · 全站共享样式
   深绿×金×亮橙 · 编辑部出版式体育数据平台
   ============================================ */

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

* {
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  background: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

:where(ul, ol) {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

:where(img) {
  max-width: 100%;
  height: auto;
}

:where(button) {
  font: inherit;
}

:where(table) {
  border-collapse: collapse;
  width: 100%;
}

hr {
  border: none;
  border-top: 1px solid rgba(212, 175, 55, 0.4);
  margin: 2rem 0;
}

/* ---------- 设计变量 ---------- */
:root {
  --color-primary: #0A3D2A;
  --color-primary-light: #2E5C4A;
  --color-gold: #D4AF37;
  --color-gold-light: #E8D89A;
  --color-orange: #FF6B00;
  --color-cream: #F5F1E8;
  --color-ink: #1A1A1A;
  --color-white: #FFFFFF;
  --color-shadow: rgba(0, 0, 0, 0.12);

  --font-heading: "Oswald", "Arial Narrow", "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
  --font-body: "Roboto", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;

  --container: 1200px;
  --radius-card: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px var(--color-shadow);
  --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.18);

  --header-z: 100;
  --fixed-z: 900;
}

/* ---------- 基础排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-primary);
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  letter-spacing: 0.01em;
  margin-bottom: 0.875rem;
}

h3 {
  font-size: clamp(1.375rem, 2.5vw, 2rem);
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

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

/* ---------- 通用容器与区块 ---------- */
.site-container {
  width: min(var(--container), 92vw);
  margin-inline: auto;
}

.site-container--narrow {
  max-width: 860px;
}

.site-container--wide {
  max-width: 1360px;
}

.main-content {
  display: block;
  min-height: 60vh;
  padding-top: 3.5rem;
}

.section {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.section--tight {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(180px, 0.6fr) minmax(0, 2.4fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  margin: 0 0 0.75rem;
}

.section-title--light {
  color: var(--color-white);
}

.section-intro {
  max-width: 36rem;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-primary-light);
  margin: 0 0 2rem;
}

/* ---------- 按钮 ---------- */
.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 10px 22px;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.site-btn--gold {
  background: var(--color-gold);
  color: var(--color-primary);
}

.site-btn--gold:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(212, 175, 55, 0.35);
}

.site-btn--action {
  background: var(--color-orange);
  color: var(--color-white);
}

.site-btn--action:hover {
  background: #E55E00;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 0, 0.32);
}

.site-btn--ghost {
  background: transparent;
  border-color: rgba(10, 61, 42, 0.5);
  color: var(--color-primary);
}

.site-btn--ghost:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- 无障碍跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: -120px;
  left: 1rem;
  z-index: 10000;
  background: var(--color-gold);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  box-shadow: var(--shadow-float);
  transition: top 0.25s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- 顶部滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--fixed-z);
  width: 100%;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-gold), var(--color-orange));
  border-radius: 0 2px 2px 0;
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: var(--fixed-z);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-gold);
  cursor: pointer;
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.2s ease;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-top:hover {
  background: var(--color-orange);
  color: var(--color-white);
}

.back-top__icon {
  display: inline-block;
  font-size: 1.35rem;
  line-height: 1;
}

/* ---------- 顶部头部 + 悬浮胶囊导航 ---------- */
.site-header {
  position: relative;
  z-index: var(--header-z);
  background: var(--color-primary);
  border-top: 3px solid var(--color-gold);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 14px 0 18px;
}

.site-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
  color: var(--color-white);
}

.site-brand__mark {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

.site-brand__cn {
  display: inline-block;
  background: var(--color-gold);
  color: var(--color-primary);
  font-size: 0.95em;
  font-weight: 700;
  padding: 1px 7px;
  margin-left: 4px;
  border-radius: 2px;
  transform: skewX(-12deg);
}

.site-brand__caption {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-gold-light);
  opacity: 0.92;
}

.site-brand__caption::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  margin-right: 6px;
  vertical-align: middle;
  background: var(--color-orange);
  transform: skewX(-30deg);
}

.site-header__cta {
  margin-left: auto;
  font-size: 0.85rem;
  padding: 9px 18px;
}

.site-header__toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-pill);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.site-header__toggle:hover {
  border-color: var(--color-gold);
  background: rgba(212, 175, 55, 0.12);
}

.site-header__toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.site-header__toggle-line {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--color-gold);
  transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}

.site-header__toggle-line:nth-child(1) { width: 100%; }
.site-header__toggle-line:nth-child(2) { width: 68%; }
.site-header__toggle-line:nth-child(3) { width: 100%; }

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  width: 100%;
  transform: translateY(6px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  width: 100%;
  transform: translateY(-6px) rotate(-45deg);
}

.site-header__toggle-text {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.site-nav {
  position: relative;
  max-width: 940px;
  margin: 0 auto;
  padding: 6px;
  background: var(--color-cream);
  border: 1px solid rgba(212, 175, 55, 0.65);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-float);
  transform: translateY(50%);
}

.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.site-nav__link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s ease, color 0.25s ease;
}

.site-nav__link:hover {
  background: rgba(212, 175, 55, 0.35);
  color: var(--color-primary);
}

.site-nav__link[aria-current="page"] {
  background: var(--color-gold);
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(10, 61, 42, 0.22);
}

.site-nav__link[aria-current="page"]::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--color-orange);
  vertical-align: middle;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: clamp(3rem, 7vw, 5rem);
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.82);
  border-top: 3px solid var(--color-gold);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: clamp(2.5rem, 6vw, 4rem) 0 2.5rem;
}

.site-footer__col {
  min-width: 0;
}

.site-footer__col--nav .site-footer__heading,
.site-footer__col--contact .site-footer__heading {
  letter-spacing: 0.18em;
}

.site-footer__logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
  margin-bottom: 0.9rem;
}

.site-footer__logo-cn {
  color: var(--color-gold);
}

.site-footer__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
  max-width: 30rem;
  margin-bottom: 1rem;
}

.site-footer__trust {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-gold-light);
  border-left: 3px solid var(--color-orange);
  padding-left: 12px;
  max-width: 26rem;
}

.site-footer__heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1rem;
}

.site-footer__links a,
.site-footer__contact a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.site-footer__links a:hover,
.site-footer__contact a:hover {
  color: var(--color-gold);
}

.site-footer__contact {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.site-footer__contact a {
  overflow-wrap: anywhere;
}

.site-footer__note {
  font-size: 0.78rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.site-footer__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

.site-footer__icp {
  color: var(--color-gold-light);
  letter-spacing: 0.05em;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  font-size: 0.85rem;
}

.site-footer__legal a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-footer__legal a:hover {
  color: var(--color-gold);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  width: min(var(--container), 92vw);
  margin: 0 auto 1.5rem;
  font-size: 0.85rem;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary-light);
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "→";
  margin-right: 0.4rem;
  color: var(--color-orange);
  font-size: 0.75em;
}

.breadcrumbs__link {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumbs__link:hover {
  color: var(--color-orange);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-primary-light);
  font-weight: 600;
}

/* ---------- 页面首屏 ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3.5rem, 8vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  background: var(--color-primary);
  color: var(--color-white);
}

.page-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.08;
  color: var(--color-white);
  max-width: 44rem;
  margin: 0;
}

.page-hero__title::after {
  content: "";
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  margin-left: 0.2em;
  background: var(--color-orange);
  transform: skewX(-15deg);
}

.page-hero__intro {
  max-width: 38rem;
  margin-top: 1rem;
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.page-hero::before {
  content: "";
  position: absolute;
  right: -6%;
  bottom: -45%;
  width: 60%;
  height: 130%;
  background: linear-gradient(135deg, transparent 42%, rgba(212, 175, 55, 0.16) 43%, rgba(212, 175, 55, 0.16) 48%, transparent 49%);
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: 14%;
  bottom: -30%;
  width: 24%;
  height: 95%;
  background: linear-gradient(135deg, transparent 45%, rgba(255, 107, 0, 0.2) 46%, rgba(255, 107, 0, 0.2) 52%, transparent 53%);
  pointer-events: none;
}

/* ---------- 非对称编辑网格 ---------- */
.editorial-grid {
  display: grid;
  grid-template-columns: minmax(200px, 0.8fr) minmax(0, 2.2fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.editorial-grid__note {
  position: sticky;
  top: 1.5rem;
  background: var(--color-white);
  border-left: 3px solid var(--color-gold);
  border-radius: 0 8px 8px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  padding: 0.9rem 1.1rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-primary-light);
}

.editorial-grid__note-title {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: 0.3rem;
}

.editorial-grid__content {
  min-width: 0;
}

/* ---------- 章节预览卡片 ---------- */
.chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.chapter-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--color-white);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-top: 4px solid var(--color-gold);
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: var(--color-ink);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.chapter-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.16);
}

.chapter-card__index {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-orange);
}

.chapter-card__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-primary);
}

.chapter-card__text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-primary-light);
  margin: 0;
}

/* ---------- 通用卡片 ---------- */
.card {
  background: var(--color-white);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 1.75rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.14);
}

/* ---------- 编辑引用块 ---------- */
.callout {
  background: var(--color-white);
  border-left: 4px solid var(--color-gold);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.5rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-primary-light);
}

.callout--orange {
  border-left-color: var(--color-orange);
}

.callout--green {
  border-left-color: var(--color-primary);
  background: rgba(10, 61, 42, 0.06);
}

/* ---------- 数据指标卡片 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
}

.stat-card {
  background: var(--color-white);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-top: 3px solid var(--color-orange);
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 1.5rem 1rem 1.25rem;
  text-align: center;
}

.stat-card__value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
}

.stat-card__label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-light);
}

/* ---------- 数据表 ---------- */
.data-table-wrap {
  overflow-x: auto;
  background: var(--color-white);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.data-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  background: var(--color-primary);
  color: var(--color-gold-light);
  padding: 0.85rem 1rem;
}

.data-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(10, 61, 42, 0.1);
  color: var(--color-ink);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover td {
  background: rgba(212, 175, 55, 0.12);
}

.data-table td:first-child {
  font-weight: 600;
  color: var(--color-primary);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 3px 12px;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-gold-light);
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: var(--radius-pill);
}

.tag--orange {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
}

.tag--green {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-gold-light);
}

.tag--outline {
  background: transparent;
  border-color: rgba(10, 61, 42, 0.4);
  color: var(--color-primary);
}

/* ---------- 响应式图片容器 ---------- */
.image-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-primary-light);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.image-frame--wide {
  aspect-ratio: 21 / 9;
}

.image-frame--square {
  aspect-ratio: 1 / 1;
}

.image-frame--portrait {
  aspect-ratio: 3 / 4;
}

.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary) 48%, var(--color-gold) 48%, var(--color-gold) 50%, transparent 50%);
  opacity: 0.9;
}

.image-frame::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 16px;
  width: 20px;
  height: 20px;
  border-top: 3px solid var(--color-orange);
  border-right: 3px solid var(--color-orange);
  opacity: 0.9;
}

.image-frame img {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 2;
  background: var(--color-primary);
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* ---------- 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}

[data-reveal="left"] {
  transform: translateX(-32px);
}

[data-reveal="right"] {
  transform: translateX(32px);
}

[data-reveal="zoom"] {
  transform: scale(0.94);
}

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

/* ---------- 响应式：平板 ---------- */
@media (min-width: 861px) and (max-width: 1120px) {
  .chapter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 1000px) {
  .site-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

/* ---------- 响应式：手机/竖屏平板 ---------- */
@media (max-width: 860px) {
  .main-content {
    padding-top: 2rem;
  }

  .site-header__bar {
    padding: 14px 0;
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-brand__caption {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 4.5vw;
    right: 4.5vw;
    width: auto;
    max-width: none;
    margin: 0;
    padding: 0;
    border-radius: 18px;
    transform: none;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease, visibility 0.3s ease, padding 0.3s ease;
  }

  .site-nav[data-open] {
    max-height: 520px;
    opacity: 1;
    visibility: visible;
    padding: 10px;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    display: block;
    text-align: center;
    padding: 12px 16px;
    border-radius: 12px;
  }

  .section-head,
  .editorial-grid {
    grid-template-columns: 1fr;
  }

  .editorial-grid__note {
    position: static;
  }

  .chapter-grid {
    grid-template-columns: 1fr;
  }

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

  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-hero {
    padding-top: 3rem;
  }
}

@media (max-width: 480px) {
  .site-header__toggle-text {
    display: none;
  }

  .site-header__toggle {
    padding: 9px 10px;
  }

  .site-header__cta {
    font-size: 0.78rem;
    padding: 7px 12px;
  }

  .site-brand__mark {
    font-size: 1.45rem;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  .site-footer__links {
    grid-template-columns: 1fr;
  }
}

/* ---------- 减少动态效果 ---------- */
@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;
    transition-delay: 0ms !important;
  }

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