:root {
  color-scheme: light;
  /* 颜色 */
  --pitch: #0e2a20;
  --pitch-deep: #081a14;
  --pitch-soft: #1c4636;
  --gold: #c9a24b;
  --gold-soft: #e7d5a4;
  --paper: #faf7f0;
  --surface: #ffffff;
  --ink: #16211c;
  --muted: #5e6b63;
  --line: #e4dfd2;
  --card-red: #b23a2e;
  --focus: #2f6f4f;
  /* 标准语义别名（契约必需 Token） */
  --color-primary: var(--pitch-soft);
  --color-background: var(--paper);
  --color-surface: var(--surface);
  --color-text: var(--ink);
  --color-muted-text: var(--muted);
  --color-border: var(--line);
  --color-focus: var(--focus);
  /* 字体 */
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    ui-sans-serif, system-ui, sans-serif;
  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    ui-sans-serif, system-ui, sans-serif;
  /* 尺寸 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --space-unit: 0.25rem;
  --content-width: 70rem;
  --reading-width: 44rem;
  --shadow-card: 0 1px 2px rgba(22, 33, 28, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  line-height: 1.6;
}

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

a {
  color: var(--pitch-soft);
}

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

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

.skip-link {
  left: 1rem;
  position: fixed;
  top: 1rem;
  transform: translateY(-200%);
  z-index: 100;
  background: var(--gold);
  color: var(--pitch-deep);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============ 布局工具 ============ */
.container {
  width: min(var(--content-width), calc(100% - 2.5rem));
  margin-inline: auto;
}

.section {
  padding-block: 4rem;
}

.section--tight {
  padding-block: 2.5rem;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.6rem;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}

.section-head .section-link {
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--pitch-soft);
  white-space: nowrap;
}

.section-head .section-link:hover {
  color: var(--gold);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: var(--gold);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease;
}

.btn--gold {
  background: var(--gold);
  color: var(--pitch-deep);
}

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

.btn--ghost-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

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

.btn--outline {
  background: transparent;
  color: var(--pitch);
  border-color: var(--pitch);
}

.btn--outline:hover {
  background: var(--pitch);
  color: #fff;
}

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

/* ============ 徽章 / 标签 ============ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: rgba(201, 162, 75, 0.16);
  color: #8a6a24;
}

.tag--dark {
  background: rgba(231, 213, 164, 0.18);
  color: var(--gold-soft);
}

.tag--red {
  background: rgba(178, 58, 46, 0.12);
  color: var(--card-red);
}

.meta {
  font-size: 0.84rem;
  color: var(--muted);
}

.meta--light {
  color: rgba(255, 255, 255, 0.65);
}

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 26, 20, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(6px);
}

.nav-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: #fff;
}

.brand-mark {
  width: 2.3rem;
  height: 2.3rem;
  flex: none;
  border: 2px solid var(--gold);
  border-radius: 50%;
  position: relative;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 50%;
  width: 5px;
  height: 5px;
  margin: -2.5px;
  border-radius: 50%;
  background: var(--gold);
}

.brand-mark::after {
  content: "";
  position: absolute;
  top: -2px;
  bottom: -2px;
  left: 50%;
  width: 0;
  border-left: 1.5px solid rgba(201, 162, 75, 0.55);
}

.brand-name {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.brand-name small {
  display: block;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding-block: 0.35rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: #fff;
}

.site-nav a[aria-current="page"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.nav-cta {
  margin-left: 0.4rem;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 2.7rem;
  height: 2.7rem;
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle .bars,
.nav-toggle .bars::before,
.nav-toggle .bars::after {
  display: block;
  width: 1.2rem;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform 0.2s ease;
}

.nav-toggle .bars::before,
.nav-toggle .bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle .bars::before {
  top: -6px;
}

.nav-toggle .bars::after {
  top: 6px;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--pitch-deep);
    padding: 0.5rem 1.25rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .site-nav.is-open {
    display: flex;
  }
  .site-nav a {
    padding-block: 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .site-nav a[aria-current="page"] {
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
  .nav-cta {
    margin: 0.9rem 0 0;
  }
}

/* ============ 英雄区 ============ */
.hero {
  position: relative;
  background: var(--pitch-deep);
  color: #fff;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(8, 26, 20, 0.94) 0%,
    rgba(8, 26, 20, 0.72) 55%,
    rgba(8, 26, 20, 0.35) 100%
  );
}

.hero-ring {
  position: absolute;
  right: -8rem;
  top: 50%;
  transform: translateY(-50%);
  width: 30rem;
  height: 30rem;
  border: 1.5px solid rgba(201, 162, 75, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.hero-ring::before {
  content: "";
  position: absolute;
  inset: 3rem;
  border: 1px solid rgba(201, 162, 75, 0.2);
  border-radius: 50%;
}

.hero-inner {
  position: relative;
  padding-block: 6.5rem;
  max-width: 38rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 1.1rem 0 1rem;
  font-weight: 800;
}

.hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.hero p {
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 2rem;
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* ============ 卡片网格 ============ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: #d6c9ab;
}

.card-body {
  padding: 1.25rem 1.35rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
}

.card-body h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.45;
}

.card-body h3 a {
  color: var(--ink);
  text-decoration: none;
}

.card-body h3 a:hover {
  color: var(--pitch-soft);
}

.card p.card-excerpt {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.card-foot {
  margin-top: auto;
  padding-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* 精选大卡 */
.feature-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.feature-card .feature-media {
  min-height: 100%;
}

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

.feature-body {
  padding: 2.25rem 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.feature-body h2 {
  margin: 0;
  font-size: 1.7rem;
  line-height: 1.3;
}

.feature-body h2 a {
  color: var(--ink);
  text-decoration: none;
}

.feature-body h2 a:hover {
  color: var(--pitch-soft);
}

.feature-body p {
  margin: 0;
  color: var(--muted);
}

.feature-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.feature-stats div {
  font-size: 0.85rem;
  color: var(--muted);
}

.feature-stats strong {
  display: block;
  font-size: 1.5rem;
  color: var(--ink);
  font-weight: 800;
}

/* 文章列表行 */
.post-row {
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.post-row:last-child {
  border-bottom: 0;
}

.post-row .post-no {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--gold);
  width: 2.6rem;
  flex: none;
  font-variant-numeric: tabular-nums;
}

.post-row h3 {
  margin: 0 0 0.25rem;
  font-size: 1.08rem;
}

.post-row h3 a {
  color: var(--ink);
  text-decoration: none;
}

.post-row h3 a:hover {
  color: var(--pitch-soft);
}

.post-row .post-side {
  margin-left: auto;
  flex: none;
  text-align: right;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem;
  box-shadow: var(--shadow-card);
}

.panel h2,
.panel h3 {
  margin-top: 0;
}

.side-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .feature-card {
    grid-template-columns: 1fr;
  }
  .feature-card .feature-media {
    min-height: 13rem;
  }
}

@media (max-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .section {
    padding-block: 2.75rem;
  }
  .hero-inner {
    padding-block: 4.5rem;
  }
  .post-row {
    flex-wrap: wrap;
  }
  .post-row .post-side {
    margin-left: 3.85rem;
    text-align: left;
  }
}

/* ============ 比分条 ============ */
.score-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  background: var(--pitch);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.score-strip .team {
  font-weight: 700;
  font-size: 1.05rem;
}

.score-strip .score {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

.score-strip .vs-note {
  width: 100%;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ============ 话题讨论 ============ */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
}

.tab-btn:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.tab-btn[aria-selected="true"] {
  background: var(--pitch);
  border-color: var(--pitch);
  color: var(--gold);
}

.discussion-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.discussion-item {
  display: flex;
  gap: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow-card);
}

.discussion-item:hover {
  border-color: #d6c9ab;
}

.discussion-stats {
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  width: 4.5rem;
  text-align: center;
  border-right: 1px solid var(--line);
  padding-right: 1.25rem;
}

.discussion-stats strong {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
}

.discussion-stats span {
  font-size: 0.74rem;
  color: var(--muted);
}

.discussion-main {
  flex: 1;
  min-width: 0;
}

.discussion-main h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.discussion-main h3 a {
  color: var(--ink);
  text-decoration: none;
}

.discussion-main h3 a:hover {
  color: var(--pitch-soft);
}

.discussion-main p {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.discussion-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.pin-flag {
  color: var(--card-red);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.state-note {
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
}

.state-note[hidden] {
  display: none;
}

/* ============ 文章页 ============ */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--reading-width)) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

.article-head {
  margin-bottom: 2rem;
}

.article-head h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  line-height: 1.3;
  margin: 0.9rem 0 1rem;
}

.byline {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.avatar {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--pitch);
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex: none;
}

.article-cover {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 2.25rem;
}

.prose {
  font-size: 1.02rem;
}

.prose h2 {
  font-size: 1.4rem;
  margin: 2.2rem 0 0.8rem;
}

.prose p {
  margin: 0 0 1.15rem;
}

.prose blockquote {
  margin: 1.6rem 0;
  padding: 0.4rem 0 0.4rem 1.25rem;
  border-left: 3px solid var(--gold);
  color: var(--pitch-soft);
  font-size: 1.08rem;
  font-weight: 600;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2rem 0;
}

.author-card {
  display: flex;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  margin: 2.5rem 0;
}

.author-card .avatar {
  width: 3.2rem;
  height: 3.2rem;
  font-size: 1.1rem;
}

.author-card h3 {
  margin: 0 0 0.3rem;
}

.author-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

/* 评论 */
.comments h2 {
  font-size: 1.3rem;
}

.comment {
  display: flex;
  gap: 0.9rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.comment:last-child {
  border-bottom: 0;
}

.comment .avatar {
  width: 2.4rem;
  height: 2.4rem;
  font-size: 0.85rem;
}

.comment-body {
  flex: 1;
}

.comment-head {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  margin-bottom: 0.25rem;
}

.comment-head strong {
  font-size: 0.95rem;
}

.comment-head time {
  font-size: 0.8rem;
  color: var(--muted);
}

.comment p {
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
}

.like-btn {
  background: none;
  border: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.like-btn:hover,
.like-btn.is-active {
  color: var(--card-red);
}

.comment-form {
  margin: 1.75rem 0 2.5rem;
}

.comment-form textarea,
.field input,
.field textarea {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.95rem;
  background: var(--surface);
  color: var(--ink);
}

.comment-form textarea:focus,
.field input:focus,
.field textarea:focus {
  border-color: var(--pitch-soft);
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 111, 79, 0.18);
}

.comment-form .form-actions {
  margin-top: 0.75rem;
  display: flex;
  justify-content: flex-end;
}

.form-feedback {
  margin-top: 0.9rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(47, 111, 79, 0.12);
  color: var(--pitch-soft);
  font-weight: 600;
  font-size: 0.92rem;
}

.form-feedback[hidden] {
  display: none;
}

/* 侧栏目录 */
.toc-panel {
  position: sticky;
  top: 5.5rem;
}

.toc-panel h3 {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-panel li {
  margin-bottom: 0.6rem;
}

.toc-panel a {
  text-decoration: none;
  color: var(--ink);
  font-size: 0.93rem;
}

.toc-panel a:hover {
  color: var(--pitch-soft);
}

@media (max-width: 980px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .toc-panel {
    position: static;
  }
}

/* ============ 表单（联系/订阅） ============ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-weight: 700;
  font-size: 0.9rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: start;
}

.channel-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.channel-list li {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.channel-list .ch-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
}

.subscribe-band {
  background: var(--pitch);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 3rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.subscribe-band h2 {
  margin: 0 0 0.5rem;
  font-size: 1.6rem;
}

.subscribe-band p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.subscribe-form {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.subscribe-form input {
  min-width: 16rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 0;
}

@media (max-width: 880px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ 关于页 ============ */
.about-hero {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: center;
}

.about-portrait {
  position: relative;
  padding: 1.5rem;
}

.about-portrait .ring {
  position: absolute;
  inset: 0;
  border: 2px solid var(--gold);
  border-radius: 50%;
}

.about-portrait .ring::after {
  content: "";
  position: absolute;
  inset: 1.5rem;
  border: 1px solid rgba(201, 162, 75, 0.5);
  border-radius: 50%;
}

.about-portrait img {
  border-radius: 50%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 6px solid var(--paper);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-grid .stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--pitch);
}

.stat span {
  font-size: 0.84rem;
  color: var(--muted);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line);
}

.timeline li {
  position: relative;
  padding: 0 0 1.6rem 1.6rem;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--paper);
}

.timeline time {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.timeline h3 {
  margin: 0.2rem 0;
  font-size: 1.05rem;
}

.timeline p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

@media (max-width: 880px) {
  .about-hero {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .about-portrait {
    max-width: 20rem;
    margin-inline: auto;
  }
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============ 页面头（内页） ============ */
.page-hero {
  background: var(--pitch-deep);
  color: #fff;
  padding-block: 3.5rem;
  position: relative;
  overflow: hidden;
}

.page-hero .hero-ring {
  width: 20rem;
  height: 20rem;
  right: -6rem;
  opacity: 0.7;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0.7rem 0 0.6rem;
}

.page-hero p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  max-width: 36rem;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--pitch-deep);
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4rem;
  padding-block: 3rem 1.75rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-grid h3 {
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid li {
  margin-bottom: 0.6rem;
}

.footer-grid a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.93rem;
}

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

.footer-brand p {
  margin: 0.85rem 0 0;
  font-size: 0.92rem;
  max-width: 20rem;
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}