/* ============================================================
   千帆网站 — 主样式表（替代 Tailwind CDN）
   所有样式提取自 Tailwind 实际使用的类，仅包含被引用的部分
   ============================================================ */

/* ===== CSS 变量 ===== */
:root {
  --paper: #FBFAF7;
  --paper-alt: #F5F3EF;
  --ink: #1A1A1A;
  --ink-soft: #37332F;
  --muted: #8C8C8C;
  --line: #E5E0D8;
  --red: #C0231A;
  --red-deep: #9C1B13;
  --gold: #B89C72;
  --section-y: 128px;
  --section-y-m: 72px;
  --section-y-lg: 160px;
  --section-y-sm: 96px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body { overflow-x: hidden; }

/* ===== 布局工具类 ===== */
.flex { display: flex; }
.grid { display: grid; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 0%; }
.shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.justify-start { justify-content: flex-start; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.sticky { position: sticky; }
.top-0 { top: 0; }
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-50 { z-index: 50; }
.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }
.pointer-events-none { pointer-events: none; }
.select-none { user-select: none; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.mx-auto { margin-left: auto; margin-right: auto; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-5 > * + * { margin-top: 1.25rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }

/* ===== 宽度/容器 ===== */
.max-w-6xl { max-width: 72rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-xl { max-width: 36rem; }
.max-w-\[1080px\] { max-width: 1080px; }
.max-w-\[680px\] { max-width: 680px; }
.max-w-\[640px\] { max-width: 640px; }
.max-w-\[56ch\] { max-width: 56ch; }
.max-w-\[48ch\] { max-width: 48ch; }
.max-w-\[38ch\] { max-width: 38ch; }
.max-w-\[24ch\] { max-width: 24ch; }
.max-w-\[520px\] { max-width: 520px; }
.max-w-\[300px\] { max-width: 300px; }
.max-w-\[28ch\] { max-width: 28ch; }
.min-h-\[3\.5rem\] { min-height: 3.5rem; }
.min-h-\[4\.5em\] { min-height: 4.5em; }
.min-h-\[6\.5em\] { min-height: 6.5em; }
.min-h-\[3\.2em\] { min-height: 3.2em; }
.min-h-\[3\.5em\] { min-height: 3.5em; }
.max-h-\[85vh\] { max-height: 85vh; }

/* ===== 间距 ===== */
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-7 { padding-left: 1.75rem; padding-right: 1.75rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.pt-28 { padding-top: 7rem; }
.pb-12 { padding-bottom: 3rem; }
.pt-2 { padding-top: 0.5rem; }
.pl-6 { padding-left: 1.5rem; }
.pt-5 { padding-top: 1.25rem; }
.pb-0\.5 { padding-bottom: 0.125rem; }
.ml-2 { margin-left: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-14 { margin-bottom: 3.5rem; }
.mr-2 { margin-right: 0.5rem; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

/* Section 间距 */
.py-section { padding-top: var(--section-y); padding-bottom: var(--section-y); }
.py-section-lg { padding-top: var(--section-y-lg); padding-bottom: var(--section-y-lg); }
.py-section-sm { padding-top: var(--section-y-sm); padding-bottom: var(--section-y-sm); }

/* ===== 排版 ===== */
.font-sans { font-family: "Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; }
.font-serif { font-family: "Noto Serif SC",Georgia,serif; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.uppercase { text-transform: uppercase; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-tight { letter-spacing: -0.025em; }
.leading-tight { line-height: 1.25; }
.leading-snug { line-height: 1.375; }
.leading-relaxed { line-height: 1.625; }
.leading-loose { line-height: 2; }
.whitespace-nowrap { white-space: nowrap; }
.whitespace-pre-line { white-space: pre-line; }
.antialiased { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* 字号 */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-\[10px\] { font-size: 10px; }
.text-\[11px\] { font-size: 11px; }
.text-caption { font-size: 0.8125rem; line-height: 1.65; }
.text-body { font-size: 1rem; line-height: 1.75; }
.text-body-sm { font-size: 0.9375rem; line-height: 1.7; }
.text-lede { font-size: 1.375rem; line-height: 1.7; }
.text-eyebrow { font-size: 0.6875rem; letter-spacing: 0.18em; font-weight: 600; }
.text-h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); line-height: 1.2; letter-spacing: 0.02em; font-weight: 700; }
.text-h4 { font-size: 1.125rem; line-height: 1.45; font-weight: 600; }

/* ===== 颜色 ===== */
.text-ink { color: var(--ink); }
.text-ink-soft { color: var(--ink-soft); }
.text-muted { color: var(--muted); }
.text-red { color: var(--red); }
.text-white { color: #fff; }
.text-white\/60 { color: rgba(255,255,255,.6); }
.text-white\/50 { color: rgba(255,255,255,.5); }
.text-white\/45 { color: rgba(255,255,255,.45); }
.text-white\/40 { color: rgba(255,255,255,.4); }
.text-white\/35 { color: rgba(255,255,255,.35); }
.text-white\/30 { color: rgba(255,255,255,.3); }
.text-white\/25 { color: rgba(255,255,255,.25); }
.text-ink\/80 { color: rgba(26,26,26,.8); }
.text-ink-soft\/80 { color: rgba(55,51,47,.8); }
.bg-paper { background: var(--paper); }
.bg-red { background: var(--red); }
.bg-ink { background: var(--ink); }
.bg-\[\#111\] { background: #111; }
.bg-\[\#1A1A1A\] { background: #1A1A1A; }
.bg-\[\#faf9f6\] { background: #faf9f6; }
.bg-paper\/95 { background: rgba(251,250,247,.95); }
.border-line { border-color: var(--line); }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }
.border-l-4 { border-left-width: 4px; border-left-style: solid; }
.border-red { border-color: var(--red); }
.border-black\/20 { border-color: rgba(0,0,0,.2); }
.border-t { border-top-width: 1px; border-top-style: solid; }

/* ===== 效果 ===== */
.backdrop-blur-md { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.transition-colors { transition: color .2s, background-color .2s, border-color .2s; }
.transition { transition: all .2s; }
.rounded-sm { border-radius: 0.125rem; }
.rounded-2 { border-radius: 2px; }
.selection\:bg-red ::selection { background: var(--red); color: #fff; }
.selection\:bg-red::selection { background: var(--red); color: #fff; }
.selection\:text-white ::selection { color: #fff; }
.selection\:text-white::selection { color: #fff; }

/* ===== 网格系统 ===== */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ===== Hover ===== */
.hover\:bg-red:hover { background: var(--red); }
.hover\:text-red:hover { color: var(--red); }
.hover\:border-red:hover { border-color: var(--red); }

/* ===== 板块交替背景 ===== */
.section--alt { background: var(--paper-alt); }

/* ===== 导航 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(251,250,247,.95);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-link {
  font-size: .8125rem; font-weight: 500; letter-spacing: .05em;
  color: var(--muted); transition: color .2s; text-decoration: none;
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center;
  height: 38px; padding: 0 20px;
  background: var(--red); color: #fff;
  font-size: 0.875rem; font-weight: 600;
  border-radius: 2px; transition: background .2s;
}
.nav-cta:hover { background: var(--red-deep); }

/* 导航品牌名（移动端缩短） */
.nav-brand-text { white-space: nowrap; }
@media (max-width: 480px) {
  .nav-brand-text { font-size: 0.875rem; letter-spacing: 0.02em; }
}
/* Logo 相关 */
.nav-logo-wrap { text-decoration: none !important; }
.nav-logo-wrap:hover { text-decoration: none; }
.nav-logo-img { height: 38px; width: auto; }
.footer-logo-img { height: 44px; width: auto; }
.nav-seal, .footer-seal { flex-shrink: 0; }
.nav-brand-text-col { display: flex; flex-direction: column; line-height: 1.3; }
.nav-brand-cn { display: block; }
.nav-brand-en { display: block; line-height: 1.2; white-space: nowrap; }
.footer-brand-text-col { display: flex; flex-direction: column; line-height: 1.3; }
@media (max-width: 480px) {
  .nav-brand-cn { font-size: 0.875rem; }
  .nav-brand-en { font-size: 0.5rem; letter-spacing: 0.08em; }
}
/* 导航诊断按钮 */
.nav-diagnosis-btn {
  margin-left: 0.5rem; padding: 0.5rem 1.25rem;
  background: var(--red); color: #fff;
  white-space: nowrap; border: none; cursor: pointer;
}
.nav-diagnosis-btn:hover { background: var(--red-deep); }

/* 了解更多链接 */
.nav-more-link {
  border-bottom: 1px solid rgba(0,0,0,.2);
  padding-bottom: 0.125rem; background: none; border-top: none; border-left: none; border-right: none; cursor: pointer;
  transition: border-color .2s;
}
.nav-more-link:hover { border-color: var(--red); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 52px; padding: 0 40px; font-size: .9375rem; font-weight: 600;
  border-radius: 2px; transition: all .2s; min-width: 180px;
  border: none; cursor: pointer; text-decoration: none;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-deep); }
.btn-primary-on-dark { background: var(--red); color: #fff; }
.btn-primary-on-dark:hover { background: var(--red-deep); }
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid rgba(55,51,47,.12);
}
.btn-ghost:hover { border-color: rgba(55,51,47,.3); }

/* ===== 悬浮目录 (桌面端) ===== */
.toc-sidebar {
  position: fixed; right: 28px; top: 50%; transform: translateY(-50%);
  z-index: 40; display: none;
}
.toc-inner {
  display: flex; flex-direction: column; gap: 18px;
  border-left: 1px solid rgba(55,51,47,.1); padding-left: 16px;
}
.toc-label {
  font-size: .625rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); margin-left: -5px;
}
.toc-item {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; margin-left: -21px; transition: all .3s;
}
.toc-dot {
  width: 9px; height: 9px; border-radius: 50%;
  border: 1.5px solid rgba(55,51,47,.2);
  background: #fff; transition: all .3s; flex-shrink: 0;
}
.toc-item.active .toc-dot {
  background: var(--red); border-color: var(--red);
  box-shadow: 0 0 0 4px rgba(192,35,26,.12);
}
.toc-text {
  font-size: .8125rem; color: var(--muted); white-space: nowrap;
  transition: color .3s; letter-spacing: .02em;
}
.toc-item:hover .toc-text { color: var(--ink-soft); }
.toc-item.active .toc-text { color: var(--ink); font-weight: 600; }

/* ===== 移动端底部目录 ===== */
.toc-mobile {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 45;
  background: rgba(251,250,247,.97);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding: 8px 0 env(safe-area-inset-bottom, 8px);
  overflow-x: auto;
}
.toc-mobile-inner {
  display: flex; gap: 6px; padding: 0 12px;
  min-width: max-content;
}
.toc-mobile-item {
  font-size: .75rem; font-weight: 500; color: var(--muted);
  padding: 6px 12px; white-space: nowrap; text-decoration: none;
  border-radius: 20px; transition: all .2s;
  border: 1px solid rgba(55,51,47,.08);
  flex-shrink: 0;
}
.toc-mobile-item.active {
  background: var(--red); color: #fff; border-color: var(--red);
}

/* ===== 浮窗 ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .3s;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(26,26,26,.55); backdrop-filter: blur(4px);
}
.modal-card {
  position: relative; z-index: 2;
  background: var(--paper); border-radius: 3px;
  padding: 40px 36px; width: 100%; max-width: 520px;
  max-height: 85vh; overflow-y: auto; margin: 24px;
  box-shadow: 0 40px 80px rgba(26,26,26,.18);
}
.modal-close {
  position: absolute; top: 20px; right: 20px;
  width: 36px; height: 36px; display: flex;
  align-items: center; justify-content: center;
  border: 1px solid rgba(55,51,47,.15); border-radius: 50%;
  color: var(--ink-soft); cursor: pointer; transition: all .2s;
  background: transparent;
}
.modal-close:hover { border-color: var(--red); color: var(--red); }

/* ===== 表单 ===== */
.form-group { margin-bottom: 20px; }
.form-label {
  font-size: .75rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--ink);
  margin-bottom: 8px; display: block;
}
.form-input {
  width: 100%; height: 44px; padding: 0 14px;
  border: 1px solid rgba(55,51,47,.15); border-radius: 2px;
  font-size: .9375rem; background: #fff; color: var(--ink);
  outline: none; transition: border-color .2s;
}
.form-input:focus { border-color: var(--red); }
.form-radio, .form-check {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; cursor: pointer; font-size: .9375rem;
  color: var(--ink-soft); border-bottom: 1px solid rgba(55,51,47,.05);
  transition: color .2s;
}
.form-radio:hover, .form-check:hover { color: var(--ink); }
.form-radio input, .form-check input { display: none; }
.radio-mark, .check-mark {
  width: 18px; height: 18px;
  border: 1.5px solid rgba(55,51,47,.25);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all .2s;
}
.radio-mark { border-radius: 50%; }
.check-mark { border-radius: 2px; }
.form-radio input:checked + .radio-mark {
  border-color: var(--red); background: var(--red);
  box-shadow: inset 0 0 0 4px #fff;
}
.form-check input:checked + .check-mark {
  border-color: var(--red); background: var(--red);
}
.form-check input:checked + .check-mark::after {
  content: ''; width: 10px; height: 6px;
  border-left: 2px solid #fff; border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px,-1px);
}
.radio-text { line-height: 1.4; }

/* ===== 卡片 ===== */
.premium-card {
  padding: 0 0 32px 0; border: 1px solid rgba(55,51,47,.12);
  border-radius: 2px; background: var(--paper);
  transition: all .4s cubic-bezier(.16,1,.3,1);
}
.premium-card:hover {
  transform: translateY(-4px); border-color: var(--red);
  box-shadow: 0 20px 40px rgba(26,26,26,.04);
}
.importance-num {
  display: inline-block; font-size: .6875rem; font-weight: 600;
  letter-spacing: .1em; margin-bottom: 16px; color: var(--red);
  padding: 28px 28px 0;
}
.card-pad { padding: 0 28px 4px; }
.premium-card.importance-flex {
  display: flex; flex-direction: column; height: 100%; padding-bottom: 32px;
}
.importance-flex .card-pad { display: flex; flex-direction: column; flex: 1; }
.importance-flex h4 { color: var(--red); }
.importance-flex .card-pad > p { flex: 1; }

/* ===== 引用块 ===== */
.section-quote {
  margin-top: 40px; border-left: 4px solid var(--red);
  padding: 0 0 0 24px; max-width: 640px;
  margin-left: auto; margin-right: auto;
  font-family: 'Noto Serif SC',Georgia,serif;
  font-size: 1.125rem; line-height: 1.7;
  color: rgba(55,51,47,.7); font-style: italic;
}

/* ===== 境况卡片 ===== */
.scenario-card {
  background: var(--paper); border: 1px solid rgba(55,51,47,.12);
  border-radius: 2px; overflow: hidden;
  display: flex; flex-direction: column; height: 100%;
  transition: all .4s cubic-bezier(.16,1,.3,1);
}
.scenario-card:hover {
  transform: translateY(-4px); border-color: var(--red);
  box-shadow: 0 20px 40px rgba(26,26,26,.04);
}
.scenario-photo-wrap { height: 260px; position: relative; overflow: hidden; }
.scenario-photo-cover {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.scenario-photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,.65) 100%);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center; padding: 24px; gap: 6px;
}
.scenario-photo-label {
  font-size: .6875rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: rgba(255,255,255,.8);
}
.scenario-photo-title {
  color: #fff; font-family: 'Noto Serif SC',Georgia,serif;
  font-weight: 700; font-size: 1.5rem; letter-spacing: .06em;
  line-height: 1.3; text-shadow: 0 2px 12px rgba(0,0,0,.3);
}
[data-md="pain-scenarios"] .scenario-photo-wrap {
  background: linear-gradient(145deg,#ede6db 0%,#faf7f2 38%,#f3efe6 60%,#e4dcd0 100%);
}
[data-md="pain-scenarios"] .scenario-photo-overlay { background: transparent; }
[data-md="pain-scenarios"] .scenario-photo-label { color: var(--red); }
[data-md="pain-scenarios"] .scenario-photo-title {
  color: var(--ink); text-shadow: 0 1px 2px rgba(255,255,255,.3);
}
.scenario-body {
  padding: 28px 28px 32px; display: flex; flex-direction: column; flex: 1;
}
.scenario-body > p:last-child { min-height: 4.5em; }

/* ===== 方法论卡片 ===== */
.method-card {
  background: var(--paper); border: 1px solid rgba(55,51,47,.12);
  border-radius: 2px; padding: 32px 28px;
  display: flex; flex-direction: column;
  transition: all .4s cubic-bezier(.16,1,.3,1);
}
.method-card:hover {
  transform: translateY(-4px); border-color: var(--red);
  box-shadow: 0 20px 40px rgba(26,26,26,.04);
}
.method-card h4 {
  font-family: 'Noto Serif SC',Georgia,serif; font-weight: 700;
  font-size: 1.25rem; color: var(--ink); margin-bottom: 12px;
  letter-spacing: .03em; line-height: 1.3;
}
.method-card:hover h4 { color: var(--red); }
.method-circle {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--red); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Noto Serif SC',serif; font-weight: 700;
  font-size: .875rem; margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(192,35,26,.2);
}

/* ===== 案例卡片 ===== */
.case-body { padding: 28px; }
.case-body > p.text-caption { min-height: 3.2em; }
.case-body .case-judgment {
  min-height: 6.5em; font-size: .8125rem;
  color: rgba(55,51,47,.55); border-left: 2px solid var(--red);
  padding-left: 12px; line-height: 1.65;
}
.case-body > p.font-semibold.text-red { min-height: 3.5em; }

/* ===== 团队卡片 ===== */
.team-item { padding: 20px 0 0 0; border-top: 1px solid rgba(55,51,47,.06); }

/* ===== Footer ===== */
.qr-block {
  display: flex; flex-direction: column; align-items: center;
  gap: 6px; text-align: center;
}
.qr-placeholder {
  width: 100px; height: 100px;
  border: 1px dashed rgba(255,255,255,.15); border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; color: rgba(255,255,255,.25);
  line-height: 1.4; background: rgba(255,255,255,.03);
}
.qr-img {
  width: 100px; height: 100px; object-fit: contain;
  border-radius: 3px; background: #fff; padding: 4px;
}
.qr-label {
  font-size: .8125rem; font-weight: 700;
  color: var(--gold); letter-spacing: .06em;
}
.qr-sub { font-size: .8125rem; font-weight: 600; color: rgba(255,255,255,.8); }
.copyable-qr {
  cursor: pointer; transition: color .2s; user-select: text;
  border-bottom: 1px dashed rgba(255,255,255,.15);
}
.copyable-qr:hover { color: rgba(255,255,255,.65); border-color: rgba(255,255,255,.4); }
.copyable-qr.copied { color: var(--red) !important; border-color: var(--red); }
.qr-copy-hint { font-size: .5625rem; color: rgba(255,255,255,.18); }
.contact-row { display: flex; align-items: center; gap: 12px; font-size: 1rem; }
.contact-key {
  color: var(--gold); font-family: 'Noto Serif SC',serif;
  font-weight: 700; font-size: .875rem; min-width: 72px;
}
.contact-val { font-size: 1rem; color: rgba(255,255,255,.55); }
.copyable {
  cursor: pointer; transition: color .2s;
  border-bottom: 1px dashed rgba(255,255,255,.2);
}
.copyable:hover { color: #fff; border-color: rgba(255,255,255,.4); }
.copyable.copied { color: var(--red) !important; border-color: var(--red); }
.footer-contact-row {
  display: flex; align-items: center; gap: 12px; margin-top: 1.5rem;
  padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.08);
}
.footer-contact-label {
  color: var(--gold); font-family: 'Noto Serif SC',serif;
  font-weight: 700; font-size: .8125rem; min-width: 64px;
}
.footer-contact-val { font-size: .9375rem; color: rgba(255,255,255,.8); }

/* ===== 装饰线 ===== */
.rule { width: 48px; height: 2px; background: var(--red); }

/* ===== Hero 背景（替代 D3 地图） ===== */
.hero-bg-static {
  position: absolute; inset: 0; z-index: 0;
  pointer-events: none; user-select: none;
  overflow: hidden;
}
.hero-bg-static::before {
  content: '';
  position: absolute; top: -20%; left: -10%; width: 120%; height: 140%;
  background:
    radial-gradient(ellipse 70% 50% at 75% 50%, rgba(192,35,26,.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 25% 45%, rgba(184,156,114,.05) 0%, transparent 70%),
    radial-gradient(circle at 55% 50%, rgba(55,51,47,.03) 0%, transparent 50%);
}
/* 连接线（用 CSS 伪元素模拟虚线辐射） */
.hero-bg-static::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  width: 0; height: 0;
  box-shadow:
    /* 左上 */
    60px -80px 0 0 rgba(192,35,26,.06),
    120px -40px 0 0 rgba(184,156,114,.05),
    -80px -100px 0 0 rgba(192,35,26,.04),
    /* 右上 */
    -100px -60px 0 0 rgba(192,35,26,.05),
    -180px -20px 0 0 rgba(184,156,114,.04),
    /* 左下 */
    40px 60px 0 0 rgba(192,35,26,.05),
    100px 80px 0 0 rgba(184,156,114,.04),
    -60px 100px 0 0 rgba(192,35,26,.04),
    /* 右下 */
    -120px 40px 0 0 rgba(192,35,26,.05),
    -200px 60px 0 0 rgba(184,156,114,.03);
  transform: translate(-50%, -50%);
}

/* ===== Judge/Aproach 页面表单 ===== */
.judge-form { text-align: left; }
.form-hint { margin-top: 6px; font-size: 0.8125rem; color: var(--muted); }
.radio-group { display: flex; flex-direction: column; gap: 12px; }
.radio-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  background: #fff; border: 1px solid var(--line); border-radius: 2px;
  cursor: pointer; transition: all .2s; font-size: 0.9375rem; color: var(--ink-soft);
}
.radio-item:hover { border-color: rgba(26,26,26,.25); }
.radio-item:has(input:checked) {
  border-color: var(--red); background: rgba(192,35,26,.02); color: var(--ink);
}
.radio-item input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.radio-indicator {
  width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: border-color .2s;
}
.radio-item:has(input:checked) .radio-indicator { border-color: var(--red); }
.radio-item:has(input:checked) .radio-indicator::after {
  content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--red);
}
.form-submit-wrap { margin-top: 40px; }
.btn-primary:disabled { opacity: .7; cursor: not-allowed; }
.btn-submit { width: 100%; }
.form-success { text-align: center; padding: 64px 0; }
.form-success-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(192,35,26,.08); color: var(--red);
  font-size: 24px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px;
}
.trust-item { padding: 24px 0; }
.trust-num {
  font-size: 2.5rem; font-weight: 700; color: var(--red);
  margin-bottom: 8px; line-height: 1.1;
}

/* Footer 组件 */
.footer {
  background: #111; color: rgba(255,255,255,.45);
  font-size: 0.875rem;
}
.footer a { color: rgba(255,255,255,.6); transition: color .2s; }
.footer a:hover { color: #fff; }
.footer-label {
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,.25);
}
.footer-tag-link {
  display: inline-block; padding: 4px 14px;
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.55);
  font-size: 0.75rem; font-weight: 500;
  border-radius: 2px; transition: all .2s;
}
.footer-tag-link:hover { border-color: rgba(255,255,255,.4); color: #fff; }
.footer-bottom {
  font-size: 0.75rem; color: rgba(255,255,255,.25);
  border-top: 1px solid rgba(255,255,255,.08);
}

body.modal-open { overflow: hidden; }

/* ===== 响应式 ===== */
@media (min-width: 1400px) {
  .toc-sidebar { display: block; }
}

@media (max-width: 768px) {
  .max-md\:py-section-m {
    padding-top: var(--section-y-m); padding-bottom: var(--section-y-m);
  }
  .section-quote { margin-top: 32px; padding-left: 16px; max-width: 100%; font-size: 0.9375rem; }
  .scenario-photo-wrap { height: 180px; }
  .scenario-photo-title { font-size: 1.125rem; }
  .scenario-body { padding: 16px; }
  .method-card { padding: 20px 16px; }
  .modal-card { padding: 24px 16px; margin: 12px; }
  .btn { width: 100%; }
  .premium-card { padding: 0 0 20px 0; }
  .importance-num { padding: 20px 20px 0; }
  .card-pad { padding: 0 20px 4px; }

  /* 导航移动端 */
  .nav .nav-link:nth-child(n+3) { display: none; }
  .nav .max-w-6xl { padding-left: 0.75rem; padding-right: 0.75rem; }
  .nav-diagnosis-btn { padding: 0.4rem 0.875rem; font-size: 0.6875rem; letter-spacing: 0.06em; }
  .nav-logo-wrap { gap: 0.5rem; }

  /* Hero 移动端 */
  .py-24 { padding-top: 4rem; padding-bottom: 4rem; }
  .text-5xl { font-size: 2rem; }
  .text-xl { font-size: 1rem; }
  .text-2xl { font-size: 1.125rem; }

  /* 板块标题 */
  .text-h2 { font-size: 1.5rem; }
  .text-lede { font-size: 1.125rem; }
  .mb-12 { margin-bottom: 2rem; }

  /* 网格移动端 */
  .grid-cols-1 { grid-template-columns: 1fr; }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
  .gap-8 { gap: 1.25rem; }
  .gap-12 { gap: 2rem; }

  /* 移动端底部目录 */
  .toc-mobile { display: flex; }

  .form-group { margin-bottom: 20px; }
  .form-input { height: 48px; font-size: 1rem; }
  .radio-item { padding: 12px 14px; }
  .trust-num { font-size: 1.75rem; }

  /* Footer 移动端 */
  .footer-contact-row {
    flex-wrap: wrap; gap: 6px; align-items: baseline;
    padding-top: 0.75rem; margin-top: 1rem;
  }
  .footer-contact-label { min-width: auto; margin-right: 4px; }
  .qr-img { width: 80px; height: 80px; }
  .qr-label { font-size: 0.75rem; }
  .qr-sub { font-size: 0.75rem; }
  .qr-copy-hint { font-size: 0.5rem; }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .nav-logo-wrap { gap: 0.375rem; }
  .nav-diagnosis-btn { padding: 0.35rem 0.625rem; font-size: 0.625rem; margin-left: 0.25rem; }
  .nav .nav-link { font-size: 0.75rem; }
  .nav .flex.items-center.gap-6 { gap: 0.75rem; }

  .text-5xl { font-size: 1.75rem; }
  .py-24 { padding-top: 3rem; padding-bottom: 3rem; }

  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-2 { grid-template-columns: 1fr; }
  .gap-6 { gap: 1rem; }

  .qr-img { width: 72px; height: 72px; }
  .qr-block { gap: 3px; }
  .qr-sub { font-size: 0.6875rem; }
  .qr-label { font-size: 0.6875rem; }

  .footer-contact-val { font-size: 0.8125rem; }
  .footer-contact-label { font-size: 0.75rem; }
  .footer-brand-text-col .text-base { font-size: 0.8125rem; }
  .footer-brand-text-col .text-\[10px\] { font-size: 0.5rem; }
}

@media (min-width: 640px) {
  .sm\:flex-row { flex-direction: row; }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sm\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .sm\:text-2xl { font-size: 1.5rem; }
}

@media (min-width: 768px) {
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .md\:grid-cols-\[1\.5fr_1fr_1fr\] { grid-template-columns: 1.5fr 1fr 1fr; }
  .md\:col-span-3 { grid-column: span 3 / span 3; }
  .md\:col-span-4 { grid-column: span 4 / span 4; }
  .md\:col-span-5 { grid-column: span 5 / span 5; }
  .md\:col-span-8 { grid-column: span 8 / span 8; }
}

@media (min-width: 1024px) {
  .lg\:gap-8 { gap: 2rem; }
  .lg\:px-16 { padding-left: 4rem; padding-right: 4rem; }
  .lg\:py-36 { padding-top: 9rem; padding-bottom: 9rem; }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:text-7xl { font-size: 4.5rem; line-height: 1; }
  .lg\:w-\[65\%\] { width: 65%; }
}