/* style.css — 登山 · 首页版式
   分区预算（1440 基准）：header 56 / hero 377 / categories 363 / featured 247
   / latest 397 / gear 219 / skills 163 / safety 154 / footer 184 = 2160 */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-body);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.28; margin: 0; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }

.container {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

.section { padding-block: var(--section-py); }

/* 小节标题：左侧竖条 + 副标 */
.section-head { margin-bottom: 24px; }
.section-head h2 {
  position: relative;
  padding-left: 14px;
  font-size: var(--fs-h2);
  letter-spacing: -0.01em;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 4px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head p {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}
.section-head--tight { margin-bottom: 12px; }
.section-head--tight h2 { font-size: clamp(20px, 1.7vw, 24px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 377px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--surface-deep);
  color: var(--ink-on-dark);
}
.hero-media { position: absolute; inset: 0; }
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 68% 42%;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, #243444 0%, #243444 32%, rgba(36, 52, 68, 0.94) 44%, rgba(36, 52, 68, 0.45) 64%, rgba(36, 52, 68, 0.12) 100%),
    linear-gradient(180deg, rgba(20, 30, 40, 0.35) 0%, rgba(20, 30, 40, 0) 45%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding-block: 40px 30px;
}
.hero-copy { max-width: 640px; }
.eyebrow {
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: rgba(247, 248, 248, 0.66);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero h1 {
  color: #fff;
  font-size: var(--fs-h1);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.08;
}
.hero-sub {
  margin-top: 14px;
  font-size: clamp(16.8px, 1.6vw, 24px);
  font-weight: 600;
  color: rgba(247, 248, 248, 0.94);
  letter-spacing: 0.01em;
}
.hero-lead {
  margin-top: 16px;
  max-width: 34em;
  color: var(--ink-on-dark-muted);
  font-size: 15px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hero-facts {
  display: flex;
  gap: 28px;
  padding-bottom: 6px;
  flex: none;
}
.hero-facts li { display: flex; flex-direction: column; gap: 2px; }
.hero-facts strong {
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  font-size: 24px;
  color: #fff;
  font-weight: 600;
  line-height: 1;
}
.hero-facts span { font-size: var(--fs-xs); color: rgba(247, 248, 248, 0.6); letter-spacing: 0.06em; }

/* ---------- 分类 ---------- */
.categories { padding-block: 42px 44px; }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 14px;
}
.cat-card {
  position: relative;
  padding: 22px 16px 20px;
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.cat-card:hover {
  background: var(--surface);
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.cat-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin: 0 auto 12px;
}
.cat-icon svg, .skill-icon svg, .safety-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.cat-card h3 {
  margin-bottom: 8px;
  font-size: var(--fs-h3);
  text-align: center;
}
.cat-card p {
  font-size: var(--fs-sm);
  line-height: 1.62;
  color: var(--ink-muted);
}

/* ---------- 精选路线 ---------- */
.featured { padding-block: 10px 10px; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 4px;
}
.featured-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: #fff;
}
.featured-card .thumb { aspect-ratio: 2.42 / 1; }
.featured-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 24, 30, 0.05) 35%, rgba(16, 24, 30, 0.82) 100%);
  transition: opacity var(--dur) var(--ease);
}
.featured-card:hover .thumb img { transform: scale(1.035); }
.featured-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 18px 20px;
}
.featured-body h3 { color: #fff; font-size: 17px; }
.featured-body p {
  margin-top: 6px;
  font-size: var(--fs-sm);
  color: rgba(247, 248, 248, 0.82);
}

/* ---------- 最新内容 ---------- */
.latest { padding-block: 22px 24px; }
.latest-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 44px;
}
.latest-row { border-bottom: 1px solid var(--line); }
.latest-row > a {
  position: relative;
  display: grid;
  grid-template-columns: 128px 1fr 24px;
  gap: 18px;
  align-items: center;
  padding: 9px 0;
  text-decoration: none;
}
.latest-row .thumb {
  aspect-ratio: 1.6 / 1;
  border-radius: var(--radius-sm);
}
.latest-row:hover h3 { color: var(--accent-strong); }
.latest-text h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  transition: color var(--dur) var(--ease);
}
.latest-text p {
  margin-top: 5px;
  font-size: var(--fs-sm);
  color: var(--ink-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-row > a::after {
  content: "→";
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink-muted);
  font-size: 12px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.latest-row:hover > a::after {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- 装备 ---------- */
.gear { padding-block: 6px 12px; }
.gear .section-head--tight { margin-bottom: 4px; }
.gear-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.gear-card { display: block; text-decoration: none; }
.gear-card .thumb {
  aspect-ratio: 4 / 1;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}
.gear-card h3 {
  font-size: 15px;
  font-weight: 600;
  transition: color var(--dur) var(--ease);
}
.gear-card:hover h3 { color: var(--accent-strong); }
.gear-card:hover .thumb img { transform: scale(1.04); }
.gear-card p {
  margin-top: 5px;
  font-size: var(--fs-sm);
  color: var(--ink-muted);
  line-height: 1.6;
}

/* ---------- 技能 ---------- */
.skills { padding-block: 8px 10px; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.skill-card {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr;
  grid-template-areas: "icon title" "icon text";
  column-gap: 14px;
  align-items: start;
  padding: 14px 16px 16px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.skill-card:hover { background: #dfe8e1; transform: translateY(-2px); }
.skill-icon { grid-area: icon; display: block; width: 30px; height: 30px; }
.skill-card h3 { grid-area: title; font-size: 15px; font-weight: 600; }
.skill-card p { grid-area: text; margin-top: 6px; font-size: var(--fs-sm); color: var(--ink-muted); line-height: 1.6; }

/* ---------- 安全横幅 ---------- */
.safety {
  padding-block: 26px;
  background: var(--surface-deep-2);
  color: var(--ink-on-dark);
}
.safety-inner {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 48px;
  align-items: center;
}
.safety-lead { display: flex; gap: 18px; align-items: flex-start; }
.safety-icon { flex: none; width: 42px; height: 42px; }
.safety-icon svg { stroke: #8fc0a9; stroke-width: 1.4; }
.safety-lead h2 { color: #fff; font-size: clamp(20.8px, 2vw, 27.2px); }
.safety-lead p {
  margin-top: 8px;
  font-size: var(--fs-sm);
  color: rgba(247, 248, 248, 0.72);
  max-width: 32em;
}
.safety-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 26px;
}
.safety-list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-sm);
  color: rgba(247, 248, 248, 0.76);
  line-height: 1.55;
}
.safety-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #8fc0a9;
}
.safety-list strong { display: block; color: #fff; font-weight: 600; }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .site-header .primary-nav { gap: 16px; font-size: 13px; }
  .hero-facts { display: none; }
  .cat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cat-card:last-child { grid-column: span 2; }
}

@media (max-width: 900px) {
  :root { --section-py: 36px; }
  .site-header { height: auto; }
  .header-inner { height: auto; flex-wrap: wrap; gap: 4px 14px; padding: 8px 0 6px; }
  .site-header .primary-nav {
    position: static;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
    gap: 0 14px;
    margin-left: 0;
    padding: 0 0 4px;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .site-header .primary-nav a { width: auto; padding: 4px 0; border-bottom: 0; font-size: 13.5px; }
  .site-header .primary-nav a::after { display: none; }
  .site-header .header-cta { display: inline-flex; }

  .hero { min-height: 0; }
  .hero::after {
    background: linear-gradient(90deg, rgba(36, 52, 68, 0.96) 0%, rgba(36, 52, 68, 0.9) 55%, rgba(36, 52, 68, 0.6) 100%);
  }
  .hero-inner { padding-block: 56px 48px; }
  .hero h1 { font-size: clamp(32px, 7vw, 48px); }

  .featured-grid { grid-template-columns: 1fr; }
  .featured-card .thumb { aspect-ratio: 2 / 1; }
  .latest-grid { grid-template-columns: 1fr; }
  .gear-grid, .skills-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .safety-inner { grid-template-columns: 1fr; gap: 26px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  :root { --gutter: 18px; --section-py: 30px; }
  .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .cat-card:last-child { grid-column: span 2; }
  .cat-card { padding: 16px 14px; }
  .cat-card h3 { font-size: 16px; }
  .cat-card p { font-size: 12px; line-height: 1.55; }
  .gear-grid, .skills-grid { grid-template-columns: 1fr; }
  .latest-row > a { grid-template-columns: 104px 1fr; gap: 12px; }
  .latest-row > a::after { display: none; }
  .hero-actions .btn { flex: 1 1 auto; }
  .safety-list { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* 分页 */
.pager { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin-top: 22px; font-size: 13px; color: var(--muted, #6b766f); }
.pager a, .pager .current { min-width: 30px; padding: 3px 9px; text-align: center; border: 1px solid rgba(20, 40, 30, .16); border-radius: 6px; color: var(--ink, #22302a); background: #fff; }
.pager a:hover { border-color: var(--accent, #3f8a6f); color: var(--accent, #3f8a6f); }
.pager .current { background: var(--accent, #3f8a6f); border-color: var(--accent, #3f8a6f); color: #fff; }

/* 首页分类计数与列表更多入口 */
.cat-count { display: inline-block; margin-top: 8px; font-size: 11.5px; color: var(--accent); font-weight: 700; }
.section-more { font-size: 13px; font-weight: 700; color: var(--accent); white-space: nowrap; }
.latest-meta { display: block; margin-top: 6px; font-size: 11.5px; color: var(--muted, #74807a); }