/* ===== 重置与基础 ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  color: #1c1c1c;
  line-height: 1.7;
  background: #fafaf7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.center { text-align: center; }
.narrow { max-width: 640px; margin-left: auto; margin-right: auto; }

/* ===== 设计变量 ===== */
:root {
  --c-ink: #1c1c1c;
  --c-paper: #fafaf7;
  --c-paper-2: #f3f1ea;
  --c-deep: #1b3a6b;       /* 智库深蓝 */
  --c-deep-2: #122849;
  --c-gold: #c9a961;        /* 金线 */
  --c-gold-2: #b08d3a;
  --c-red: #b2363a;         /* 点睛红 */
  --c-mute: #6e6e6e;
  --c-line: #e2dfd6;
  --shadow-1: 0 2px 6px rgba(0,0,0,.04), 0 12px 32px rgba(20,30,60,.08);
  --shadow-2: 0 8px 24px rgba(20,30,60,.10), 0 24px 60px rgba(20,30,60,.10);
  --r: 4px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.site-header.scrolled {
  border-color: var(--c-line);
  box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 6px 20px rgba(20,30,60,.04);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: block;
  object-fit: contain;
  background: transparent;
  box-shadow: 0 2px 10px rgba(27,58,107,.18);
  flex: none;
}
.brand-mark-lg {
  width: 56px; height: 56px;
  box-shadow: 0 4px 16px rgba(201,169,97,.25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-family: 'Noto Serif SC', serif; font-size: 16px; color: var(--c-deep); letter-spacing: .5px; }
.brand-text em { font-size: 12px; color: var(--c-mute); font-style: normal; letter-spacing: 1.5px; }
.primary-nav { display: flex; align-items: center; gap: 24px; }
.primary-nav > a,
.primary-nav > .has-dropdown > .nav-dropdown-toggle {
  font-size: 14px; color: var(--c-ink); position: relative;
  padding: 6px 0; transition: color .2s; text-decoration: none; display: inline-block;
}
.primary-nav > a::after,
.primary-nav > .has-dropdown > .nav-dropdown-toggle::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--c-gold); transform: scaleX(0); transform-origin: left;
  transition: transform .25s;
}
.primary-nav > a:hover::after,
.primary-nav > .has-dropdown:hover > .nav-dropdown-toggle::after { transform: scaleX(1); }
.primary-nav > a:hover,
.primary-nav > .has-dropdown:hover > .nav-dropdown-toggle { color: var(--c-deep); }

/* 分组下拉菜单（桌面端） */
.primary-nav .has-dropdown { position: relative; }
.nav-dropdown-toggle { cursor: pointer; }
.nav-dropdown-toggle::after {
  content: '▾'; position: static !important; display: inline !important;
  margin-left: 4px; font-size: 10px; opacity: 0.6;
  background: none !important; width: auto !important; height: auto !important;
  transform: none !important; transition: none !important;
}
.dropdown-menu {
  position: absolute; top: calc(100% + 12px); left: 0;
  min-width: 220px;
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 8px;
  padding: 8px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
  opacity: 0; visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s;
  z-index: 100;
}
.has-dropdown:hover > .dropdown-menu,
.has-dropdown.open > .dropdown-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown-menu a {
  display: block; padding: 10px 18px; font-size: 13px;
  color: var(--c-ink); text-decoration: none;
  white-space: nowrap; border: 0;
  transition: background .15s, color .15s;
}
.dropdown-menu a::after { display: none !important; }
.dropdown-menu a:hover {
  background: var(--c-paper-2); color: var(--c-deep);
}

.primary-nav .cta-link {
  background: var(--c-deep); color: #fff !important;
  padding: 8px 16px !important; border-radius: var(--r);
  font-weight: 500; text-decoration: none;
  transition: background .2s;
}
.primary-nav .cta-link::after { display: none; }
.primary-nav .cta-link:hover { background: var(--c-deep-2); }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 36px; height: 36px; position: relative;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--c-ink);
  margin: 5px auto; transition: transform .25s, opacity .25s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 首屏 ===== */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #f7f5ee 0%, #fafaf7 100%);
  padding: 80px 0 96px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0; opacity: .55;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(201,169,97,.10) 0, transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(27,58,107,.08) 0, transparent 45%),
    repeating-linear-gradient(45deg, rgba(27,58,107,.025) 0 1px, transparent 1px 14px);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 880px; }
.eyebrow {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: rgba(27,58,107,.08); color: var(--c-deep);
  font-size: 12px; letter-spacing: 2px; font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.15; font-weight: 700;
  letter-spacing: 1px; color: var(--c-ink);
  margin-bottom: 24px;
}
.hero-title .accent { color: var(--c-deep); position: relative; }
.hero-title .accent::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 6px; height: 12px;
  background: var(--c-gold); opacity: .35; z-index: -1;
}
.hero-sub {
  font-size: 18px; color: #3a3a3a; line-height: 1.85;
  margin-bottom: 36px; max-width: 620px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 26px; border-radius: var(--r);
  font-size: 15px; font-weight: 500; letter-spacing: .5px;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--c-deep); color: #fff; }
.btn-primary:hover { background: var(--c-deep-2); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(27,58,107,.25); }
.btn-ghost { background: transparent; border-color: var(--c-deep); color: var(--c-deep); }
.btn-ghost:hover { background: var(--c-deep); color: #fff; }
.btn-light { background: #fff; color: var(--c-deep); }
.btn-light:hover { background: var(--c-gold); color: var(--c-deep-2); }
.btn-block { display: block; width: 100%; margin-top: 16px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; padding-top: 40px;
  border-top: 1px solid var(--c-line);
}
.stat { display: flex; flex-direction: column; }
.stat strong {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(28px, 3.4vw, 40px);
  color: var(--c-deep); font-weight: 700;
  letter-spacing: .5px; line-height: 1.1;
}
.stat strong small { font-size: 16px; color: var(--c-mute); margin-left: 2px; font-weight: 500; }
.stat span { font-size: 13px; color: var(--c-mute); margin-top: 6px; line-height: 1.5; }

/* ===== 通用 section ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--c-paper-2); }
.section-dark {
  background: var(--c-deep);
  color: #f0ece0;
  background-image:
    radial-gradient(circle at 10% 0%, rgba(201,169,97,.10) 0, transparent 40%),
    radial-gradient(circle at 90% 100%, rgba(201,169,97,.08) 0, transparent 50%);
}
.section-dark .section-title { color: #fff; }
.section-dark .section-eyebrow { color: var(--c-gold); }
.section-cta {
  background: linear-gradient(135deg, var(--c-deep-2) 0%, var(--c-deep) 100%);
  color: #f0ece0;
}

.section-eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 3px;
  color: var(--c-gold-2); font-weight: 600; margin-bottom: 16px;
  text-transform: uppercase;
}
.section-eyebrow.light { color: var(--c-gold); }
.section-title {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 700; line-height: 1.25; color: var(--c-ink);
  margin-bottom: 20px; letter-spacing: .5px;
}
.section-title.light { color: #fff; }
.section-lead {
  font-size: 16px; color: #444; line-height: 1.85;
  max-width: 720px; margin-bottom: 48px;
}
.section-lead.light { color: rgba(255,255,255,.85); }

/* ===== 两栏 ===== */
.two-col { display: grid; grid-template-columns: 1.2fr .8fr; gap: 64px; align-items: start; }
.value-list { list-style: none; margin-top: 32px; }
.value-list li { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--c-line); }
.value-list li:last-child { border-bottom: 0; }
/* #about 撤下「真实判例 / 可执行」两块后，「受众清晰」成了该栏收尾项。
   通用规则会让最后一项没有下边框，正文文字直接在留白里"淡出"、板块底部没有落点；
   这里给收尾项补一条收口虚线，让板块底部有一条明确的结束线（与设计稿一致）。
   作用域限定在这一项上，不影响其它页面的 .value-list。 */
.value-list li.value-item-closed { border-bottom: 1px dashed var(--c-line); }
.value-list .dot {
  flex: none; width: 10px; height: 10px; border-radius: 50%;
  background: var(--c-gold); margin-top: 9px;
  box-shadow: 0 0 0 4px rgba(201,169,97,.18);
}
.value-list strong { display: block; font-size: 16px; margin-bottom: 4px; color: var(--c-ink); }
.value-list p { font-size: 14px; color: var(--c-mute); line-height: 1.7; }
.value-list .audience-flow {
  font-size: 13.5px;
  color: var(--c-deep);
  background: var(--c-paper-2);
  border-left: 2px solid var(--c-gold);
  padding: 10px 14px;
  margin-top: 8px;
  border-radius: 0 4px 4px 0;
  line-height: 1.95;
  letter-spacing: .3px;
}

.col-card {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 8px; padding: 36px; box-shadow: var(--shadow-1);
  position: relative;
}
.col-card::before {
  content: ''; position: absolute; left: 0; top: 24px; bottom: 24px;
  width: 3px; background: var(--c-gold);
}
.col-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 20px; color: var(--c-deep); margin-bottom: 16px;
}
.col-card blockquote {
  font-family: 'Noto Serif SC', serif;
  font-size: 19px; line-height: 1.7; color: var(--c-ink);
  padding: 16px 0; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line);
  margin-bottom: 20px;
}
.signature { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; font-size: 13px; color: var(--c-mute); }
.sig-line { width: 32px; height: 1px; background: var(--c-gold-2); }
.quick-facts { display: grid; gap: 12px; }
.quick-facts > div {
  display: grid; grid-template-columns: 60px 1fr; gap: 12px;
  font-size: 13px; padding: 8px 0; border-bottom: 1px dashed var(--c-line);
}
.quick-facts > div:last-child { border-bottom: 0; }
.quick-facts span { color: var(--c-mute); }
.quick-facts strong { color: var(--c-ink); font-weight: 500; }

.col-card.dark-card {
  background: linear-gradient(160deg, rgba(8,20,40,.55) 0%, rgba(8,20,40,.35) 100%);
  border: 1px solid rgba(201,169,97,.40);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.col-card.dark-card::before { background: var(--c-gold); }
.col-card.dark-card h3 { color: #fff; font-weight: 700; font-size: 22px; }
.col-card.dark-card .card-sub {
  color: var(--c-gold);
  font-size: 13px;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
  font-weight: 600;
}

/* ===== 研究领域 grid（8 大方面 + 2 个补充热点 = 10 张） ===== */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 48px;
}
.domain {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  padding: 18px 16px;
  position: relative;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.domain:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--c-gold);
}
.domain-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--c-line);
  gap: 8px;
}
.domain h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  color: var(--c-deep);
  font-weight: 700;
  margin: 0;
}
.domain-focus {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 999px;
  letter-spacing: 1px;
  font-weight: 600;
  flex: none;
  white-space: nowrap;
}
.domain-main .domain-focus   { background: var(--c-deep); color: #fff; }
.domain-strong .domain-focus { background: var(--c-gold); color: var(--c-deep-2); }
.domain-new .domain-focus    { background: var(--c-red); color: #fff; }
.domain-industry .domain-focus { background: var(--c-paper-2); color: var(--c-mute); border: 1px solid var(--c-line); }

/* 暂未开放卡片（筹备中） */
.domain-pending {
  background: #fafaf8;
  border: 1px dashed var(--c-line);
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: auto;
}
.domain-pending:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--c-line);
}
.domain-pending .domain-pending-tag {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--c-paper-2);
  color: var(--c-mute);
  letter-spacing: 0.5px;
  font-weight: 600;
}
.domain-pending .domain-angle { color: var(--c-mute); font-style: italic; }

.domain-law {
  font-size: 12px;
  color: var(--c-gold-2);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.domain-tools {
  font-size: 13px;
  color: var(--c-ink);
  margin-bottom: 12px;
  font-weight: 500;
  line-height: 1.6;
}
.domain-angle {
  font-size: 12.5px;
  color: var(--c-mute);
  line-height: 1.7;
  border-top: 1px dashed var(--c-line);
  padding-top: 10px;
  margin-top: 4px;
}

/* ===== 核心栏目 grid ===== */
.pillar-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-top: 48px;
}
.pillar {
  background: #fff; padding: 32px 24px; border-radius: 8px;
  border: 1px solid var(--c-line);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative; overflow: hidden;
}
.pillar::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-deep), var(--c-gold));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: transparent; }
.pillar:hover::before { transform: scaleX(1); }
.pillar-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 36px; color: var(--c-gold-2); font-weight: 700;
  line-height: 1; margin-bottom: 16px; opacity: .8;
}
.pillar h3 { font-family: 'Noto Serif SC', serif; font-size: 20px; color: var(--c-deep); margin-bottom: 6px; }
.pillar-freq { font-size: 12px; color: var(--c-gold-2); letter-spacing: 1.5px; margin-bottom: 14px; font-weight: 500; }
.pillar p { font-size: 14px; color: #444; line-height: 1.75; margin-bottom: 20px; }
.pillar-tag {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  background: var(--c-paper-2); color: var(--c-deep);
  font-size: 12px; font-weight: 500;
}

/* ===== 在线工具 grid ===== */
.tool-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 48px;
}
.tool-card {
  background: #fff; padding: 32px 28px; border-radius: 12px;
  border: 1px solid var(--c-line);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  text-decoration: none; color: inherit;
  position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.tool-card::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 4px;
  background: linear-gradient(90deg, var(--c-deep), var(--c-gold));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--c-gold); }
.tool-card:hover::before { transform: scaleX(1); }
.tool-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 28px; color: var(--c-gold-2); font-weight: 700;
  position: absolute; top: 16px; right: 20px; opacity: .55;
}
.tool-icon { font-size: 36px; margin-bottom: 12px; }
.tool-card h3 { font-family: 'Noto Serif SC', serif; font-size: 22px; color: var(--c-deep); margin-bottom: 4px; }
.tool-freq { font-size: 12px; color: var(--c-gold-2); letter-spacing: 1.5px; margin-bottom: 14px; font-weight: 600; }
.tool-card p { font-size: 14px; color: #444; line-height: 1.75; flex: 1; margin-bottom: 20px; }
.tool-cta {
  display: inline-block; padding: 8px 0; color: var(--c-deep);
  font-size: 14px; font-weight: 600;
  border-top: 1px dashed var(--c-line);
  transition: color .2s, transform .2s;
}
.tool-card:hover .tool-cta { color: var(--c-gold-2); transform: translateX(4px); }

.tool-featured {
  background: linear-gradient(160deg, #fff 0%, #faf6e8 100%);
  border-color: var(--c-gold);
  box-shadow: 0 8px 28px rgba(201,169,97,.18);
}
.tool-featured::after {
  content: 'HOT'; position: absolute; top: 16px; left: 20px;
  background: var(--c-red); color: #fff; font-size: 11px;
  padding: 3px 10px; border-radius: 999px; font-weight: 700; letter-spacing: 1.5px;
}

/* ===== 会员卡片全局样式（主页 + members.html 共享） ===== */
.members-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.member-card { background: #fff; border: 1px solid var(--c-line); border-radius: 10px; overflow: hidden; transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column; }
.member-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); }
.member-card .plaque { padding: 20px 16px 16px; gap: 6px; }
.member-card .plaque .plaque-icon { font-size: 28px; }
.member-card .plaque .plaque-name { font-size: 14px; }
.member-card .plaque .plaque-tag { font-size: 9px; letter-spacing: 1.5px; }
.member-card .plaque .plaque-tier { font-size: 10px; }
.member-body { padding: 16px; flex: 1; display: flex; flex-direction: column; }
.member-name { font-family: 'Noto Serif SC', serif; font-size: 16px; color: var(--c-deep); font-weight: 700; margin-bottom: 4px; }
.member-type { font-size: 11px; color: var(--c-mute); margin-bottom: 10px; }
.member-desc { font-size: 13px; color: #444; line-height: 1.7; flex: 1; margin-bottom: 12px; }
.member-stats { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 10px; border-top: 1px dashed var(--c-line); }
.member-stat { font-size: 11px; color: var(--c-mute); padding: 2px 8px; background: var(--c-paper-2); border-radius: 4px; }
@media (max-width: 960px) { .members-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .members-grid { grid-template-columns: 1fr; } }

/* ===== 会员中心 / 单位级别 ===== */
.org-type-tabs {
  display: flex; gap: 0; justify-content: center;
  background: #fff; border: 1px solid var(--c-line); border-radius: 999px;
  padding: 4px; max-width: 540px; margin: 0 auto 32px;
}
.org-type-tab {
  flex: 1; padding: 12px 20px; border: 0; background: transparent;
  font-size: 14px; color: var(--c-mute); cursor: pointer; border-radius: 999px;
  font-weight: 500; transition: all .25s;
}
.org-type-tab.active { background: var(--c-deep); color: var(--c-gold); }
.org-type-tab:hover:not(.active) { color: var(--c-deep); }

.org-levels {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-top: 0;
}
.org-level {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 12px; padding: 28px 22px; text-align: center;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative; display: flex; flex-direction: column;
}
.org-level:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--c-gold); }
.org-level-featured {
  background: linear-gradient(160deg, #fff 0%, #faf6e8 100%);
  border-color: var(--c-gold);
  transform: scale(1.04);
  box-shadow: 0 12px 36px rgba(201,169,97,.20);
}
.org-level-featured:hover { transform: scale(1.04) translateY(-4px); }
.ol-head { margin-bottom: 12px; }
.ol-badge {
  display: inline-block; padding: 3px 12px; border-radius: 999px;
  background: var(--c-paper-2); color: var(--c-mute);
  font-size: 11px; letter-spacing: 1.5px; font-weight: 600; margin-bottom: 10px;
}
.ol-badge-silver   { background: #d8dde3; color: #4a5563; }
.ol-badge-gold     { background: var(--c-gold); color: var(--c-deep-2); }
.ol-badge-platinum { background: linear-gradient(135deg, #b9c4d4, #8896a8); color: #fff; }
.org-level h3 {
  font-family: 'Noto Serif SC', serif; font-size: 19px;
  color: var(--c-deep); margin-bottom: 8px; font-weight: 700;
}
.ol-price {
  font-family: 'Inter', sans-serif;
  font-size: 26px; color: var(--c-deep); font-weight: 700;
  letter-spacing: -.5px; line-height: 1.1;
}
.ol-price small { font-size: 13px; color: var(--c-mute); font-weight: 500; }
.ol-sub { font-size: 12px; color: var(--c-mute); margin: 8px 0 16px; min-height: 32px; }
.ol-benefits {
  list-style: none; padding: 0; margin: 0 0 20px; text-align: left;
  border-top: 1px dashed var(--c-line); padding-top: 14px;
}
.ol-benefits li {
  font-size: 12.5px; color: #444; line-height: 1.7; padding: 4px 0;
}
.ol-benefits li:not(:last-child) { border-bottom: 1px dotted var(--c-line); padding-bottom: 4px; margin-bottom: 4px; }
.ol-cta {
  display: inline-block; padding: 10px 18px; border-radius: 6px;
  font-size: 13px; font-weight: 500; margin-top: auto;
  border: 1px solid var(--c-line); color: var(--c-deep);
  transition: all .2s;
}
.ol-cta:hover { background: var(--c-deep); color: #fff; border-color: var(--c-deep); }
.ol-cta-primary {
  background: var(--c-deep); color: #fff; border-color: var(--c-deep);
}
.ol-cta-primary:hover { background: var(--c-deep-2); border-color: var(--c-deep-2); }
.org-note {
  text-align: center; font-size: 13px; color: var(--c-mute);
  margin-top: 32px; padding: 14px; background: rgba(201,169,97,.08);
  border-radius: 8px; border-left: 3px solid var(--c-gold);
  max-width: 720px; margin-left: auto; margin-right: auto;
}

@media (max-width: 960px) {
  .org-levels { grid-template-columns: repeat(2, 1fr); }
  .org-level-featured { transform: none; }
  .org-level-featured:hover { transform: translateY(-4px); }
}
@media (max-width: 560px) {
  .org-levels { grid-template-columns: 1fr; }
  .org-type-tab { font-size: 12px; padding: 10px 8px; }
}

/* ===== 会员中心 / 单位级别 ===== */
.org-type-tabs {
  display: flex; gap: 0; justify-content: center;
  background: #fff; border: 1px solid var(--c-line); border-radius: 999px;
  padding: 4px; max-width: 540px; margin: 0 auto 32px;
}
.org-type-tab {
  flex: 1; padding: 12px 20px; border: 0; background: transparent;
  font-size: 14px; color: var(--c-mute); cursor: pointer; border-radius: 999px;
  font-weight: 500; transition: all .25s;
}
.org-type-tab.active { background: var(--c-deep); color: var(--c-gold); }
.org-type-tab:hover:not(.active) { color: var(--c-deep); }

.org-levels {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-top: 0;
}
.org-level {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 12px; padding: 0; text-align: center;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative; display: flex; flex-direction: column;
  overflow: hidden;
}
.org-level:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.org-level-featured {
  border-color: var(--c-gold);
  transform: scale(1.04);
  box-shadow: 0 12px 36px rgba(201,169,97,.20);
}
.org-level-featured:hover { transform: scale(1.04) translateY(-4px); }

/* 牌匾样式（4 档差异化） */
.plaque {
  position: relative; padding: 24px 22px 20px; color: #fff;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.plaque::before {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: 0; height: 4px;
  background: rgba(255,255,255,.4);
}
.plaque-icon { font-size: 36px; line-height: 1; }
.plaque-tag {
  font-size: 10px; letter-spacing: 2px; font-weight: 700;
  background: rgba(255,255,255,.20); padding: 3px 10px; border-radius: 999px;
}
.plaque-name {
  font-family: 'Noto Serif SC', serif; font-size: 17px; font-weight: 700;
  letter-spacing: 1.5px; text-align: center; line-height: 1.3;
}
.plaque-tier { font-size: 12px; opacity: .85; letter-spacing: 1px; }
.plaque-level {
  display: inline-block; padding: 3px 12px; border-radius: 999px;
  background: rgba(255,255,255,.22); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  border: 1px solid rgba(255,255,255,.35);
}

.plaque-q1 { background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%); }
.plaque-q2 { background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%); }
.plaque-q3 { background: linear-gradient(135deg, #c9a961 0%, #a07a2e 100%); }
.plaque-q4 { background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%); }

.plaque-y1 { background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%); }
.plaque-y2 { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
.plaque-y3 { background: linear-gradient(135deg, #c9a961 0%, #a07a2e 100%); }
.plaque-y4 { background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%); }

/* Y 类可见范围环（核心差异化） */
.scope-rings {
  display: flex; gap: 6px; align-items: center; justify-content: center;
  margin: 12px 0;
}
.scope-ring {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--c-line); display: grid; place-items: center;
  font-size: 10px; font-weight: 700; color: var(--c-mute);
  background: #fff;
}
.scope-ring.active { border-color: var(--c-deep); background: var(--c-deep); color: var(--c-gold); }
.scope-ring.arrow { width: 14px; height: 14px; border: 0; background: transparent; color: var(--c-mute); font-size: 11px; }
.scope-label { font-size: 11px; color: var(--c-mute); text-align: center; }

.org-level-body { padding: 18px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.ol-price {
  font-family: 'Inter', sans-serif;
  font-size: 24px; color: var(--c-deep); font-weight: 700;
  letter-spacing: -.5px; line-height: 1.1; margin: 8px 0 4px;
}
.ol-price small { font-size: 12px; color: var(--c-mute); font-weight: 500; }
.ol-sub { font-size: 12px; color: var(--c-mute); margin: 6px 0 12px; min-height: 32px; line-height: 1.6; }
.ol-benefits {
  list-style: none; padding: 0; margin: 0 0 16px; text-align: left;
}
.ol-benefits li {
  font-size: 12.5px; color: #444; line-height: 1.7; padding: 3px 0 3px 18px;
  position: relative;
}
.ol-benefits li::before {
  content: '✓'; position: absolute; left: 0; top: 3px;
  color: var(--c-gold-2); font-weight: 700; font-size: 13px;
}
.ol-cta {
  display: inline-block; padding: 10px 18px; border-radius: 6px;
  font-size: 13px; font-weight: 500; margin-top: auto;
  border: 1px solid var(--c-line); color: var(--c-deep);
  transition: all .2s;
}
.ol-cta:hover { background: var(--c-deep); color: #fff; border-color: var(--c-deep); }
.ol-cta-primary {
  background: var(--c-deep); color: #fff; border-color: var(--c-deep);
}
.ol-cta-primary:hover { background: var(--c-deep-2); border-color: var(--c-deep-2); }
.org-note {
  text-align: center; font-size: 13px; color: var(--c-mute);
  margin-top: 32px; padding: 14px; background: rgba(201,169,97,.08);
  border-radius: 8px; border-left: 3px solid var(--c-gold);
  max-width: 720px; margin-left: auto; margin-right: auto;
}

/* 牌匾路径图（横向阶梯） */
.plaque-path {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin: 32px 0;
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 12px; padding: 24px;
}
.plaque-path-step { text-align: center; padding: 16px 8px; border-radius: 8px; background: var(--c-paper-2); }
.plaque-path-step .step-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 13px; color: var(--c-mute); letter-spacing: 2px; font-weight: 600; margin-bottom: 8px;
}
.plaque-path-step .step-icon { font-size: 32px; margin-bottom: 8px; }
.plaque-path-step .step-name { font-family: 'Noto Serif SC', serif; font-size: 14px; color: var(--c-deep); font-weight: 700; margin-bottom: 4px; }
.plaque-path-step .step-tip { font-size: 11px; color: var(--c-mute); }
.plaque-path-step.q1 .step-icon { color: #2563eb; }
.plaque-path-step.q2 .step-icon { color: #0891b2; }
.plaque-path-step.q3 .step-icon { color: #c9a961; }
.plaque-path-step.q4 .step-icon { color: #7c3aed; }

@media (max-width: 960px) {
  .org-levels { grid-template-columns: repeat(2, 1fr); }
  .org-level-featured { transform: none; }
  .org-level-featured:hover { transform: translateY(-4px); }
  .plaque-path { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .org-levels { grid-template-columns: 1fr; }
  .org-type-tab { font-size: 12px; padding: 10px 8px; }
  .plaque-path { grid-template-columns: 1fr; }
}

/* ===== 撮合中心 ===== */
.match-flow {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 12px; align-items: stretch;
  margin: 40px 0;
}
.match-step {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 12px; padding: 28px 24px; text-align: center;
  position: relative; transition: all .25s;
}
.match-step:hover { border-color: var(--c-gold); transform: translateY(-3px); }
.ms-num {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--c-deep); color: var(--c-gold);
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; font-size: 13px;
  border: 3px solid var(--c-paper);
}
.match-step h4 { font-family: 'Noto Serif SC', serif; font-size: 18px; color: var(--c-deep); margin-bottom: 8px; }
.match-step p { font-size: 13px; color: var(--c-mute); line-height: 1.7; }
.ms-icon { display: block; font-size: 36px; margin-top: 12px; }
.match-arrow { font-size: 32px; color: var(--c-gold-2); display: grid; place-items: center; font-weight: 700; }

.match-protect {
  background: linear-gradient(160deg, var(--c-paper-2) 0%, #fff 100%);
  border: 1px solid var(--c-line);
  border-radius: 12px; padding: 32px;
  margin: 32px 0;
}
.match-protect h4 { font-family: 'Noto Serif SC', serif; color: var(--c-deep); font-size: 18px; margin-bottom: 20px; }
.protect-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.protect-item {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 8px; padding: 20px;
  text-align: center;
  border-top: 3px solid var(--c-gold);
}
.pi-icon { font-size: 32px; display: block; margin-bottom: 8px; }
.protect-item strong { display: block; font-family: 'Noto Serif SC', serif; color: var(--c-deep); font-size: 15px; margin-bottom: 6px; }
.protect-item p { font-size: 12.5px; color: var(--c-mute); line-height: 1.7; }

.match-cta-area { text-align: center; padding: 24px 0 0; }

@media (max-width: 960px) {
  .match-flow { grid-template-columns: 1fr; gap: 16px; }
  .match-arrow { transform: rotate(90deg); }
  .protect-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-rec { grid-template-columns: 1fr; }
  .ai-rec-card { padding: 20px; }
}
@media (max-width: 560px) {
  .protect-grid { grid-template-columns: 1fr; }
}

/* ===== AI 智能诊断 ===== */
.ai-rec { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ai-rec-card {
  background: linear-gradient(160deg, #fff 0%, var(--c-paper-2) 100%);
  border: 1px solid var(--c-line);
  border-radius: 10px; padding: 24px 20px;
  border-top: 3px solid var(--c-gold);
}
.ai-icon { font-size: 32px; display: block; margin-bottom: 8px; }
.ai-rec-card strong {
  display: block; font-family: 'Noto Serif SC', serif;
  color: var(--c-deep); font-size: 16px; margin-bottom: 8px;
}
.ai-rec-card p { font-size: 13px; color: #444; line-height: 1.75; margin-bottom: 12px; }
.ai-tip {
  display: block; padding: 6px 10px; background: rgba(40,140,80,.10);
  color: #2a7a4f; border-radius: 4px; font-size: 12px; font-weight: 500;
}

/* ===== 撮合中心数字指标（主页简版） ===== */
.match-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 720px; margin: 40px auto 0; }
.ms-stat { text-align: center; padding: 24px 16px; background: #fff; border: 1px solid var(--c-line); border-radius: 12px; }
.ms-stat .ms-num { font-family: 'Inter', sans-serif; font-size: 40px; color: var(--c-deep); font-weight: 700; line-height: 1; margin-bottom: 8px; }
.ms-stat .ms-lbl { font-size: 13px; color: var(--c-mute); }
.ms-hint { font-size: 11px; color: var(--c-gold-2); margin-top: 6px; padding: 2px 8px; background: rgba(201,169,97,.10); border-radius: 4px; display: inline-block; }
@media (max-width: 720px) { .match-stats { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .match-stats + div + div, .deals-page [style*="grid-template-columns:repeat(4"] { grid-template-columns: repeat(2, 1fr) !important; } }

/* ===== 案例 grid ===== */
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 48px;
}
.case-card {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 8px; padding: 28px; transition: transform .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); }
.case-card.featured { display: none; }
.case-tag {
  display: inline-block; padding: 4px 10px; border-radius: 4px;
  font-size: 12px; font-weight: 600; margin-bottom: 16px;
  letter-spacing: 1px; align-self: flex-start;
}
.tag-a { background: rgba(27,58,107,.10); color: var(--c-deep); }
.tag-b { background: rgba(178,54,58,.10); color: var(--c-red); }
.tag-c { background: rgba(40,140,80,.10); color: #2a7a4f; }
.tag-d { background: rgba(201,169,97,.15); color: var(--c-gold-2); }
.tag-e { background: rgba(27,58,107,.85); color: #fff; }
.tag-f { background: rgba(106,27,154,.10); color: #6a1b9a; }
.section-meta-update {
  text-align: center;
  font-size: 13px;
  color: var(--c-mute);
  letter-spacing: 1px;
  margin: 12px 0 36px;
}
.section-meta-update::before { content: '⏱  '; }

/* ===== 2026-09-15 按用户要求撤下 =====
   ① 案例期次切换条（.case-months / .case-month）—— 首页只呈现本月案例
   ② 首页算力条（#caseCreditBar / .ccb-badge / .ccb-btn / .ccb-hint）—— 不再露出余额
   期次深链 ?month=YYYY-MM 仍然保留（案例库页每期的「在首页查看这一期 →」走此路径）。 */

.case-card h3 { font-family: 'Noto Serif SC', serif; font-size: 19px; color: var(--c-ink); margin-bottom: 6px; line-height: 1.4; }
.case-meta { font-size: 12px; color: var(--c-mute); letter-spacing: 1px; margin-bottom: 16px; }
.case-amount {
  font-family: 'Noto Serif SC', serif;
  font-size: 16px; color: var(--c-red);
  font-weight: 600; margin-bottom: 16px; padding-bottom: 16px;
  border-bottom: 1px dashed var(--c-line);
}
.case-amount strong { font-size: 28px; margin: 0 4px; }
.case-card p { font-size: 14px; color: #444; line-height: 1.75; flex: 1; margin-bottom: 16px; }
.case-link { color: var(--c-deep); font-size: 14px; font-weight: 500; }
.case-link:hover { color: var(--c-gold-2); }

/* 案例卡片折叠详情（HTML5 details/summary） */
.case-detail {
  margin-top: 14px;
  border-top: 1px dashed var(--c-line);
  padding-top: 10px;
}
.case-detail summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  color: var(--c-deep);
  font-size: 14px;
  font-weight: 500;
  user-select: none;
  padding: 2px 0;
  transition: color .2s;
}
.case-detail summary::-webkit-details-marker { display: none; }
.case-detail summary::before {
  content: '›';
  display: inline-block;
  font-size: 18px;
  font-weight: 700;
  color: var(--c-gold-2);
  transition: transform .25s ease;
  transform-origin: center;
  line-height: 1;
}
.case-detail summary:hover { color: var(--c-gold-2); }
.case-detail[open] summary::before { transform: rotate(90deg); }
.case-detail[open] summary { color: var(--c-gold-2); margin-bottom: 4px; }

.case-detail-body {
  background: var(--c-paper-2);
  border-left: 3px solid var(--c-gold);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
  margin-top: 10px;
  animation: cdb-in .25s ease;
}
@keyframes cdb-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}
.cdb-block { margin-bottom: 14px; }
.cdb-block:last-child { margin-bottom: 0; }
.cdb-block h5 {
  font-family: 'Noto Serif SC', serif;
  font-size: 13px;
  color: var(--c-deep);
  margin-bottom: 6px;
  letter-spacing: 1.5px;
  font-weight: 600;
}
.cdb-block p {
  font-size: 13px;
  color: #444;
  line-height: 1.75;
  margin-bottom: 0;
}
.cdb-block ol {
  padding-left: 22px;
  margin: 0;
}
.cdb-block ol li {
  font-size: 13px;
  color: #444;
  line-height: 1.8;
  margin-bottom: 4px;
  padding-left: 4px;
}
.cdb-block ol li::marker { color: var(--c-gold-2); font-weight: 700; }

/* ===== 方法论 ===== */
.method-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-top: 56px;
}
.method {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 8px; padding: 32px 24px;
  transition: background .25s, border-color .25s, transform .25s;
}
.method:hover { background: rgba(255,255,255,.08); border-color: var(--c-gold); transform: translateY(-3px); }
.method-wide { grid-column: span 4; background: linear-gradient(135deg, rgba(201,169,97,.10), rgba(201,169,97,.02)); border-color: rgba(201,169,97,.4); }
.method-link { display: block; color: inherit; text-decoration: none; cursor: pointer; position: relative; }
.method-link:hover {
  background: linear-gradient(135deg, rgba(201,169,97,.18) 0%, rgba(201,169,97,.04) 100%);
  border-color: var(--c-gold);
  transform: translateY(-3px);
}
.method-link:hover .method-char { box-shadow: 0 0 0 6px rgba(201,169,97,.25); }
.method-cta {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--c-gold);
  font-weight: 600;
  opacity: .8;
  transition: opacity .2s, transform .2s;
}
.method-link:hover .method-cta { opacity: 1; transform: translateX(4px); }

/* ===== 道 · 深度解读 ===== */
.deep-article {
  margin-top: 48px;
  background: linear-gradient(160deg, rgba(255,255,255,.06) 0%, rgba(8,20,40,.45) 100%);
  border: 1px solid rgba(201,169,97,.35);
  border-radius: 12px;
  padding: 40px 48px;
  color: rgba(255,255,255,.92);
  box-shadow: 0 20px 60px rgba(0,0,0,.30);
}
.deep-header {
  border-bottom: 1px dashed rgba(201,169,97,.30);
  padding-bottom: 20px;
  margin-bottom: 24px;
}
.deep-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2.5px;
  color: var(--c-gold);
  font-weight: 600;
  background: rgba(201,169,97,.15);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.deep-header h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 26px;
  color: #fff;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .5px;
}
.deep-body p {
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 16px;
  color: rgba(255,255,255,.85);
}
.deep-body .deep-lead {
  font-size: 17px;
  font-family: 'Noto Serif SC', serif;
  line-height: 2;
  color: rgba(255,255,255,.95);
  border-left: 3px solid var(--c-gold);
  padding-left: 18px;
  margin-bottom: 24px;
}
.deep-body strong { color: var(--c-gold); font-weight: 600; }
.deep-body h4 {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  color: var(--c-gold);
  font-weight: 600;
  margin: 28px 0 14px;
  letter-spacing: 1px;
}
.deep-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}
.deep-body ul li {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255,255,255,.82);
  padding: 6px 0 6px 22px;
  position: relative;
}
.deep-body ul li::before {
  content: '◆';
  position: absolute;
  left: 0; top: 6px;
  color: var(--c-gold);
  font-size: 10px;
}
.deep-refs li::before { content: '→'; }

/* 大道至简链路图 */
.deep-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(0,0,0,.25);
  border: 1px dashed rgba(201,169,97,.30);
  border-radius: 8px;
  padding: 20px 16px;
  margin: 24px 0;
}
.chain-node {
  font-family: 'Noto Serif SC', serif;
  font-size: 14px;
  color: rgba(255,255,255,.85);
  padding: 6px 14px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(201,169,97,.30);
  border-radius: 6px;
  letter-spacing: 1px;
  font-weight: 500;
}
.chain-node-end {
  background: linear-gradient(135deg, var(--c-gold), #b08d3a);
  color: var(--c-deep-2);
  font-weight: 700;
  border-color: var(--c-gold);
  box-shadow: 0 2px 12px rgba(201,169,97,.35);
}
.chain-arrow {
  color: var(--c-gold);
  font-size: 18px;
  font-weight: 700;
}
.method-char {
  display: inline-grid; place-items: center;
  width: 56px; height: 56px; border-radius: 50%;
  border: 2px solid var(--c-gold); color: var(--c-gold);
  font-family: 'Noto Serif SC', serif;
  font-size: 26px; font-weight: 700;
  margin-bottom: 16px;
}
.method h3 { font-family: 'Noto Serif SC', serif; font-size: 22px; color: #fff; margin-bottom: 8px; }
.method p { font-size: 14px; color: rgba(255,255,255,.78); line-height: 1.8; }

/* ===== 时间线 ===== */
.timeline { list-style: none; margin-top: 32px; }
.timeline li {
  display: grid; grid-template-columns: 100px 1fr; gap: 20px;
  padding: 22px 0; border-bottom: 1px dashed var(--c-line);
}
.timeline li:last-child { border-bottom: 0; }
.timeline .time {
  font-family: 'Noto Serif SC', serif;
  font-size: 14px; color: var(--c-gold-2); font-weight: 600;
  letter-spacing: 1px; padding-top: 2px;
}
.timeline strong { display: block; font-size: 16px; color: var(--c-ink); margin-bottom: 4px; }
.timeline p { font-size: 14px; color: var(--c-mute); line-height: 1.7; }

.live-list { list-style: none; }
.live-list li {
  display: flex; gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(255,255,255,.20);
}
.live-list li:last-child { border-bottom: 0; }
.live-num {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  background: var(--c-gold); color: var(--c-deep-2);
  display: grid; place-items: center;
  font-weight: 700; font-size: 14px;
  box-shadow: 0 2px 8px rgba(201,169,97,.35);
}
.live-list strong {
  display: block; color: #fff; font-size: 15px; font-weight: 600;
  margin-bottom: 4px; letter-spacing: .3px;
}
.live-list p {
  font-size: 13px;
  color: rgba(255,255,255,.92);
  line-height: 1.6;
}

/* ===== 联系 ===== */
.contact-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 48px;
}
.contact-item {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px; padding: 32px 24px;
  text-align: left; transition: background .25s, border-color .25s, transform .25s;
}
.contact-item:hover { background: rgba(255,255,255,.10); border-color: var(--c-gold); transform: translateY(-3px); }
.ci-icon { font-size: 32px; display: block; margin-bottom: 14px; }
.contact-item h3 { font-family: 'Noto Serif SC', serif; font-size: 19px; color: #fff; margin-bottom: 8px; }
.contact-item p { font-size: 14px; color: rgba(255,255,255,.78); line-height: 1.7; margin-bottom: 16px; }
.link-arrow { color: var(--c-gold); font-size: 14px; font-weight: 500; }
.link-arrow:hover { color: #fff; }

/* ===== 页脚 ===== */
.site-footer {
  background: #0c1d35; color: rgba(255,255,255,.78);
  padding: 48px 0 14px; font-size: 14px;
}
.footer-inner { display: grid; grid-template-columns: 1.2fr 2fr; gap: 48px; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.10); }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand strong { display: block; color: #fff; font-family: 'Noto Serif SC', serif; font-size: 17px; margin-bottom: 4px; }
.footer-brand p { font-size: 12px; color: var(--c-gold); letter-spacing: 1.5px; }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-cols h4 { color: #fff; font-size: 14px; margin-bottom: 14px; letter-spacing: 1px; }
.footer-cols a { display: block; padding: 4px 0; color: rgba(255,255,255,.7); font-size: 13px; transition: color .2s; }
.footer-cols a:hover { color: var(--c-gold); }
.footer-bottom { padding-top: 14px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,.5); }
.footer-bottom .disclaimer { font-style: italic; }

/* ===== 首屏数字条 + 七步服务流程（单行文字链，按只读 API 渲染，静态兜底在 index.html）===== */
.hero-updated {
  text-align: right; font-size: 12px; color: var(--c-mute);
  margin: 10px 2px 0; letter-spacing: .5px;
}

.hero-funnel { margin-top: 34px; }
.hf-title {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Noto Serif SC', serif;
  font-size: 15px; color: var(--c-deep); font-weight: 700;
  letter-spacing: 1px; margin-bottom: 14px;
  padding-left: 12px; border-left: 3px solid var(--c-gold);
}
/* 单行文字链：白底胶囊容器，项目与分隔箭头居中排布 */
.hf-steps {
  display: flex; flex-wrap: nowrap; align-items: center; justify-content: center;
  gap: 0 2px;
  background: rgba(255,255,255,.6); border: 1px solid var(--c-line);
  border-radius: 999px; padding: 11px 24px; backdrop-filter: blur(8px);
}
.hf-step {
  font-family: 'Noto Serif SC', serif;
  font-size: 15px; font-weight: 700; color: var(--c-deep);
  text-decoration: none; white-space: nowrap;
  padding: 4px 9px; border-radius: 999px;
  transition: color .18s, background .18s;
}
.hf-step:hover { color: var(--c-gold-2); background: rgba(201,169,97,.10); }
.hf-sep {
  color: var(--c-gold-2); opacity: .55; font-size: 12px; font-weight: 400;
  user-select: none; -webkit-user-select: none;
}
/* 办会员 = 转化主推，保留金色小胶囊强调 */
.hf-step-hot,
.hf-step-hot:hover {
  background: linear-gradient(135deg, var(--c-gold) 0%, var(--c-gold-2) 100%);
  color: var(--c-deep-2);
  box-shadow: 0 2px 8px rgba(201,169,97,.35);
}
@media (max-width: 780px) {
  .hf-steps {
    flex-wrap: wrap; gap: 5px 2px; justify-content: center;
    border-radius: 18px; padding: 11px 14px;
  }
  .hf-step { font-size: 13.5px; padding: 4px 6px; }
  .hf-sep { display: none; }
}
/* 更窄：固定 4 列网格，7 项恒为 4+3，行行均衡 */
@media (max-width: 520px) {
  .hf-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 5px 2px; }
  .hf-step { justify-self: center; text-align: center; padding: 5px 4px; }
}
@media (max-width: 340px) {
  .hf-step { font-size: 12.5px; }
}

/* ===== 导航漏斗分组（浅/中/深 3 段） ===== */
.primary-nav a.active-section {
  color: var(--c-deep) !important;
  position: relative;
}
.primary-nav a.active-section::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--c-gold);
}
.primary-nav a { font-size: 13.5px; }
.primary-nav .nav-shallow { color: #2a2a2a; }
.primary-nav .nav-mid {
  color: var(--c-deep); font-weight: 600;
  border-left: 1px solid var(--c-line);
  margin-left: 4px; padding-left: 12px !important;
}
.primary-nav .nav-mid-gold {
  color: var(--c-gold-2); font-weight: 700;
  background: linear-gradient(135deg, rgba(201,169,97,.18), rgba(201,169,97,.08));
  border-radius: 4px; padding: 6px 10px !important; margin: 0 4px 0 4px;
  border: 1px solid rgba(201,169,97,.35);
}
.primary-nav .nav-deep {
  color: var(--c-mute); font-size: 12.5px;
  border-left: 1px solid var(--c-line);
  margin-left: 4px; padding-left: 12px !important;
}
.primary-nav .nav-deep:hover { color: var(--c-deep); }
@media (max-width: 960px) {
  .primary-nav .nav-mid, .primary-nav .nav-deep { border-left: 0; padding-left: 24px !important; margin-left: 0; font-weight: 400; }
  .primary-nav .nav-mid-gold { margin: 4px 14px; }
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-deep), var(--c-gold), var(--c-red));
  transform-origin: 0 50%; transform: scaleX(0);
  z-index: 100; transition: transform .08s linear;
  box-shadow: 0 1px 4px rgba(201,169,97,.4);
}

/* ===== 移动端返回按钮（非首页自动注入，桌面端隐藏） ===== */
.back-btn {
  display: none;  /* 桌面端隐藏，靠浏览器原生 ← 按钮 */
  align-items: center; gap: 4px;
  padding: 6px 12px; margin-right: 8px;
  color: var(--c-deep); font-size: 13px; font-weight: 600;
  border: 1px solid var(--c-line); border-radius: 999px;
  background: #fff; cursor: pointer; user-select: none;
  -webkit-tap-highlight-color: rgba(27,58,107,.08);
  transition: background .15s, border-color .15s, transform .12s;
}
.back-btn:hover { background: var(--c-paper-2); border-color: var(--c-gold); }
.back-btn:active { transform: scale(0.96); }
.back-btn svg { stroke: var(--c-deep); }
@media (max-width: 960px) {
  .back-btn { display: inline-flex; }
  /* 顶栏给返回按钮让出空间：logo 区缩小文字 / 隐藏次要元素 */
  .header-inner { gap: 8px; }
  .brand-text strong { font-size: 14px; }
  .brand-text em { font-size: 11px; }
}
.scroll-prompt {
  position: fixed; bottom: 24px; right: 24px; z-index: 60;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-deep); color: var(--c-gold);
  display: grid; place-items: center; cursor: pointer;
  box-shadow: 0 8px 24px rgba(27,58,107,.30);
  font-size: 18px; font-weight: 600;
  transition: all .25s;
  animation: scroll-bounce 1.6s ease-in-out infinite;
}
.scroll-prompt:hover { transform: scale(1.1); background: var(--c-gold); color: var(--c-deep); animation: none; }
.scroll-prompt::after {
  content: '↓'; font-size: 22px; line-height: 1;
}
@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ===== 滚动入场动画 ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .primary-nav {
    position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 0; border-bottom: 1px solid var(--c-line);
    max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .primary-nav.open { max-height: calc(100vh - 72px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .primary-nav > a { padding: 14px 24px; border-bottom: 1px solid var(--c-line); }
  .primary-nav > .has-dropdown { border-bottom: 1px solid var(--c-line); }
  .primary-nav > .has-dropdown > .nav-dropdown-toggle {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px; font-weight: 600; color: var(--c-deep);
    cursor: pointer; user-select: none; -webkit-tap-highlight-color: rgba(27,58,107,0.08);
    transition: background .15s;
  }
  .primary-nav > .has-dropdown > .nav-dropdown-toggle:active {
    background: var(--c-paper-2);
  }
  .nav-dropdown-toggle::after {
    content: '›' !important; font-size: 22px !important; color: var(--c-gold-2);
    margin-left: 0; transform: rotate(90deg) !important; transition: transform .25s;
    font-weight: 700;
  }
  .has-dropdown.open > .nav-dropdown-toggle::after { transform: rotate(-90deg) !important; }
  /* 移动端下拉展开时显示金色下划线（和"关于"active-section 一致的视觉反馈） */
  .has-dropdown.open > .nav-dropdown-toggle { color: var(--c-gold-2); }
  .has-dropdown.open > .nav-dropdown-toggle::before { transform: scaleX(1); }
  /* 移动端 nav-dropdown-toggle 的金色下划线（::after 被占用做箭头，::before 独立） */
  .primary-nav > .has-dropdown > .nav-dropdown-toggle::before {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0;
    height: 2px; background: var(--c-gold);
    transform: scaleX(0); transform-origin: left;
    transition: transform .25s ease;
  }
  .dropdown-menu {
    position: static; box-shadow: none; border: 0;
    background: var(--c-paper-2); border-radius: 0;
    max-height: 0; overflow: hidden; padding: 0; opacity: 1;
    visibility: visible; transform: none; transition: max-height .25s; min-width: 0;
  }
  .has-dropdown.open > .dropdown-menu { max-height: 500px; padding: 6px 0; }
  .dropdown-menu a { padding: 10px 24px 10px 48px; font-size: 13px; }
  .primary-nav .cta-link { margin: 12px 24px; text-align: center; border-bottom: 0; }
  .nav-toggle { display: block; z-index: 999; }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card.featured { grid-column: span 1; }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .method-wide { grid-column: span 2; }
  .deep-article { padding: 28px 24px; }
  .deep-header h3 { font-size: 22px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; }
  .section { padding: 64px 0; }
  .domain-grid { grid-template-columns: repeat(3, 1fr); }
}

/* 首屏数字条：平板/手机改为 2 列（≤720px），避免 4 列过窄 */
@media (max-width: 720px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .pillar-grid, .method-grid, .tool-grid { grid-template-columns: 1fr; }
  .method-wide { grid-column: span 1; }
  .deep-chain { flex-direction: column; gap: 6px; }
  .chain-arrow { transform: rotate(90deg); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .hero { padding: 56px 0 64px; }
  .brand-text strong { font-size: 14px; }
  .brand-text em { font-size: 10px; }
  .domain-grid { grid-template-columns: 1fr; }
}

/* ===== 视频号直播入口（每周四 20:00 · 悬浮底栏） ===== */
.live-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--c-deep) 0%, var(--c-deep-2) 100%);
  color: #fff;
  border-top: 2px solid var(--c-gold);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
}
body { padding-bottom: 90px; }
.live-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.live-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: var(--c-gold);
  color: var(--c-deep-2);
  white-space: nowrap;
}
.live-banner.is-live .live-tag {
  background: var(--c-red);
  color: #fff;
  animation: livePulse 1.6s infinite;
}
.live-banner.is-replay .live-tag {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}
@keyframes livePulse { 0%,100%{opacity:1} 50%{opacity:0.55} }
.live-info { flex: 1 1 280px; min-width: 0; }
.live-info h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 16px;
  color: var(--c-gold);
  margin-bottom: 4px;
  font-weight: 700;
}
.live-info p { font-size: 13px; color: rgba(255, 255, 255, 0.85); line-height: 1.5; }
.live-info strong { color: var(--c-gold); font-family: 'Inter', sans-serif; font-weight: 700; }
.live-cta {
  background: var(--c-gold);
  color: var(--c-deep-2);
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}
.live-cta:hover { background: #fff; color: var(--c-deep-2); }
.live-banner.is-live .live-cta { background: var(--c-red); color: #fff; }
.live-banner.is-live .live-cta:hover { background: #fff; color: var(--c-red); }
/* 二维码相关样式已撤销 */
@media (max-width: 720px) {
  .live-inner { padding: 10px 14px; gap: 10px; }
  .live-info h3 { font-size: 15px; }
  .live-info p { font-size: 12px; }
  .live-cta { padding: 7px 14px; font-size: 12px; }
  .live-qr { width: 48px; height: 48px; }
  .live-qr-hint { font-size: 11px; }
  body { padding-bottom: 110px; }
}
@media (max-width: 480px) {
  .live-info { flex-basis: 100%; order: 2; }
  .live-status { order: 1; }
  .live-qr-wrap { order: 3; margin-left: auto; }
  .live-cta { order: 4; flex-basis: 100%; text-align: center; }
  body { padding-bottom: 180px; }
}


/* ===== 案例库入口卡（04 案例库 → cases.html） ===== */
a.pillar { display: block; color: inherit; text-decoration: none; cursor: pointer; }
a.pillar .pillar-more {
  display: inline-block; margin-top: 12px;
  font-size: 13px; font-weight: 700; letter-spacing: .5px;
  color: var(--c-gold-2); transition: transform .2s;
}
a.pillar:hover .pillar-more { transform: translateX(4px); }

/* ===== 众筹更新（读者消耗算力 → AI 速递 1 条） ===== */
.case-update-line {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; flex-wrap: wrap; margin: 14px 0 4px;
}
.case-update-btn {
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px; background: var(--c-gold);
  border: 1px solid var(--c-gold); color: var(--c-deep-2);
  border-radius: 999px; font-size: 13.5px; font-weight: 700;
  transition: all .2s; font-family: inherit;
}
.case-update-btn:hover { background: #fff; color: var(--c-deep); }
.case-update-btn:disabled { cursor: not-allowed; }
.case-update-hint { font-size: 12px; color: var(--c-mute); }

/* 算力不足态（2026-09-15 新增）：按钮从「消耗算力」变成「去『我的算力』学习赚算力」的入口。
   视觉上改用白底虚线，与可执行的消耗动作区分开；但**仍然可点**（不再 disabled 成死路）。 */
.case-update-btn.is-earn {
  background: #fff; border-style: dashed; border-color: var(--c-deep);
  color: var(--c-deep);
}
.case-update-btn.is-earn:hover { background: var(--c-gold); border-color: var(--c-gold); color: var(--c-deep-2); }

/* ===== AI 速递分组（众筹更新产物，与已核验案例分开） ===== */
.case-ai-wrap { margin-top: 44px; }
.case-ai-head { margin-bottom: 18px; padding-bottom: 12px; border-bottom: 1px dashed rgba(201,169,97,.55); }
.case-ai-head h3 {
  font-family: 'Noto Serif SC', serif; font-size: 19px; color: var(--c-deep);
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.case-ai-count {
  display: inline-block; min-width: 22px; padding: 1px 8px; border-radius: 999px;
  background: rgba(201,169,97,.18); color: var(--c-gold-2);
  font-size: 12px; font-weight: 700; font-family: 'Inter', sans-serif;
}
.case-ai-note { font-size: 12.5px; color: var(--c-mute); line-height: 1.7; }
.case-ai-note strong { color: var(--c-red); }
.case-card-ai { border-top: 3px solid var(--c-gold); }
.case-ai-badge {
  display: inline-flex; align-items: center; gap: 5px; margin-top: 10px;
  padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 600;
  background: rgba(201,169,97,.16); color: #8a6d1f; border: 1px solid rgba(201,169,97,.5);
}
.case-ai-src { margin-top: 8px; font-size: 12px; color: var(--c-mute); word-break: break-all; }
.case-ai-src a { color: var(--c-deep); }
.case-ai-src a:hover { color: var(--c-gold-2); }

@media (max-width: 640px) {
  .case-update-line { gap: 8px; }
  .case-update-btn { width: 100%; justify-content: center; }
}

/* ============================================================
   ===== 2026-09-15 增补：自适应栅格 · 卡片等高 · 每屏一栏目轻吸附 =====
   设计原则
     ① 自动收缩：列宽由「卡片最小可读宽度」决定，不再靠断点硬跳档；
     ② 自动换行：容器变窄时列数连续减少，放不下就换行，永不横向溢出；
     ③ 整齐有序：同组卡片等高，标签 / 按钮 / 链接统一贴底对齐；
     ④ 每屏一栏目：栏目成为滚动吸附点，滚动停稳后栏目标题自动对齐屏顶。
   生效范围：≤960px（手机 / 平板）。>960px 桌面端仍是 1180px 定宽阅读版式。
   一键回退：给 <html> 加 class="no-snap" 即可关闭吸附（栅格自适应保留）。
   ============================================================ */

/* ---------- ① 卡片等高 + 贴底对齐（全设备；只改内部排版，不改宽度） ---------- */
.pillar, .domain, .method, .contact-item { display: flex; flex-direction: column; }
.pillar-tag { align-self: flex-start; }              /* 胶囊标签不被拉伸成整行 */
.pillar > .pillar-tag, a.pillar .pillar-tag { margin-top: auto; }
.domain-angle, .method-cta, .contact-item .link-arrow { margin-top: auto; }
.tool-card .tool-cta { margin-top: auto; }

/* ---------- ② 长串不撑破卡片（案号 / 网址 / 英文长词） ---------- */
.domain-law, .domain-tools, .domain-angle, .pillar p, .member-desc,
.case-card p, .tool-card p, .contact-item p, .method p, .ms-lbl { overflow-wrap: anywhere; }
.domain-grid > *, .pillar-grid > *, .tool-grid > *, .members-grid > *, .case-grid > *,
.method-grid > *, .contact-grid > *, .match-stats > * { min-width: 0; }

/* ---------- ③ 原本写死在行内 style 的栅格，外提为类才能被媒体查询接管 ---------- */
.learn-modules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.power-levels  { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; text-align: center; }
.svc-map       { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

/* ---------- ④ 容器内边距随宽度收缩（>571px 恒为 24px，桌面零影响） ---------- */
.container { padding: 0 clamp(16px, 4.2vw, 24px); }
html.no-snap { scroll-snap-type: none; }             /* 吸附一键关闭开关 */

/* ================= ≤960px：手机 / 平板 ================= */
@media (max-width: 960px) {
  /* 卡片数能被整除的组合锁成整齐多行，永不出现 3+1 残行 */
  .pillar-grid, .members-grid, .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .method-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }  /* 5 项 = 2+2+整行 */

  /* 变长卡片组：列数由卡片最小可读宽度自动算出（自动收缩 + 自动换行） */
  .domain-grid   { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
  .tool-grid     { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
  .case-grid     { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
  .contact-grid  { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
  .match-stats   { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
  .svc-map       { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
  .learn-modules { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin: 24px 0; }
  .power-levels  { grid-template-columns: repeat(auto-fit, minmax(88px, 1fr)); gap: 8px; }
  .method-wide   { grid-column: 1 / -1; }         /* 「势」恒占满整行，任意列数都成立 */

  /* 小屏卡片内边距收紧，一屏容纳更多信息 */
  .tool-card, .contact-item, .method { padding: 24px 20px; }
  .case-card { padding: 22px 18px; }
  .pillar    { padding: 26px 20px; }
  .domain    { padding: 16px 14px; }
  .member-body { padding: 14px; }

  /* 栏目背景强制深浅交替：相邻板块同色会让栏目边界消失 */
  #about, #pillars, #org, #match, #policy { background: #fafaf7; }
  #domains, #tools, #learn-preview, #cases { background: #f3f1ea; }

  /* ---- 每屏一栏目：轻吸附（proximity，不强制满屏、不打断长滚动） ---- */
  html {
    scroll-snap-type: y proximity;
    scroll-padding-top: 72px;        /* 让开 sticky 顶栏 */
    scroll-padding-bottom: 112px;    /* 让开悬浮直播条，末屏内容不被遮 */
  }
  .hero, .section {
    scroll-snap-align: start;
    scroll-margin-top: 72px;
  }
  .site-header, .site-footer, #liveBanner { scroll-snap-align: none; }
}

/* 页脚链接组：4 列 → 窄屏降 2 列，避免变成一条超长清单 */
@media (max-width: 640px) {
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* 极窄屏（≤480px）：正文卡片一律单列，避免两列之内再折行 */
@media (max-width: 480px) {
  .pillar-grid, .members-grid,
  .tool-grid, .contact-grid, .case-grid, .method-grid, .learn-modules,
  .domain-grid { grid-template-columns: 1fr; }
}