/* ============================================================
   PandaLink · 数据杂志
   设计系统 + 全站样式
   规范见 docs/superpowers/specs/2026-07-22-pandalink-data-magazine-design.md
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --paper:       #FAF7F2;
  --paper-warm:  #F3EDE3;
  --card:        #FFFFFF;
  --ink:         #1A1815;
  --ink-2:       #6B655C;
  --ink-3:       #A8A196;
  --line:        rgba(26,24,21,0.10);
  --ai-blue:     #2563EB;
  --ai-sky:      #38BDF8;
  --grad-ai:     linear-gradient(120deg, #2563EB, #38BDF8);
  --gold:        #C9A96A;

  --serif: "Songti SC", "STZhongsong", "SimSun", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
           "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --max-w: 1160px;
  --ease:  cubic-bezier(0.22, 1, 0.36, 1);
  --t:     0.35s var(--ease);
}

/* ---------- Reset / Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section--warm { background: var(--paper-warm); }

.hairline { border: none; border-top: 1px solid var(--line); }

/* ---------- 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ink-2);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--ai-blue);
}
.eyebrow--gold::before { background: var(--gold); }

.h-display {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(44px, 8vw, 96px);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.h-section {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(30px, 4.5vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.lead { color: var(--ink-2); font-size: 18px; max-width: 620px; }

.num-grad {
  background: var(--grad-ai);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-variant-numeric: tabular-nums;
}

.num {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 210px;
  padding: 16px 32px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  transition: transform var(--t), box-shadow var(--t), background var(--t), color var(--t);
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--grad-ai);
  color: #fff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(37, 99, 235, 0.36); }

.btn-ghost {
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }

.btn .svg-icon { width: 18px; height: 18px; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.78);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), background var(--t);
}
.nav-scrolled {
  background: rgba(250, 247, 242, 0.92);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.nav-brand img { width: 34px; height: 34px; }
.nav-brand small {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ai-blue);
  margin-left: 2px;
}
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color var(--t);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 3px;
  border-radius: 2px;
  background: var(--grad-ai);
}
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
}

/* ---------- 页尾 ---------- */
.footer {
  background: var(--ink);
  color: var(--ink-3);
  padding: 72px 0 40px;
}
.footer a { color: inherit; }
.footer a:hover { color: var(--paper); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 48px;
  align-items: start;
}
.footer-brand { color: var(--paper); }
.footer-brand .nav-brand { font-size: 22px; margin-bottom: 16px; }
/* 页尾为深色底，黑色熊猫会融进背景：给 Logo 加浅色底托 */
.footer-brand .nav-brand img {
  background: var(--paper);
  border-radius: 10px;
  padding: 2px;
}
.footer-brand p { font-size: 14px; line-height: 2; }
.footer-contact h4, .footer-qr h4 {
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}
.footer-contact p { font-size: 15px; line-height: 2.2; }
.footer-social { display: flex; gap: 14px; margin-top: 20px; }
.footer-social img {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--paper);
  padding: 3px;
  opacity: 0.85;
  transition: opacity var(--t), transform var(--t);
}
.footer-social img:hover { opacity: 1; transform: translateY(-2px); }
.footer-qr img {
  width: 108px; height: 108px;
  border-radius: 12px;
  background: #fff;
  padding: 6px;
}
.footer-qr p { font-size: 12px; margin-top: 10px; }
.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid rgba(250, 247, 242, 0.12);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 二维码弹窗 ---------- */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(26, 24, 21, 0.5);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t), visibility var(--t);
}
.qr-modal.open { opacity: 1; visibility: visible; }
.qr-card {
  background: var(--paper);
  border-radius: 20px;
  padding: 40px 44px 36px;
  text-align: center;
  max-width: 360px;
  width: 100%;
  position: relative;
  transform: translateY(16px) scale(0.97);
  transition: transform var(--t);
}
.qr-modal.open .qr-card { transform: none; }
.qr-card img {
  width: 200px; height: 200px;
  margin: 22px auto 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
}
.qr-card h3 { font-family: var(--serif); font-size: 24px; }
.qr-card p { color: var(--ink-2); font-size: 14px; }
.qr-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--ink-2);
  transition: background var(--t), color var(--t);
}
.qr-close:hover { background: var(--paper-warm); color: var(--ink); }

/* ---------- 图标 ---------- */
.svg-icon { width: 24px; height: 24px; flex: none; }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 走马灯 ---------- */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  white-space: nowrap;
  font-size: 15px;
  color: var(--ink-2);
}
.marquee-item b {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--ink);
}
.marquee-item .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--ai-blue);
  align-self: center;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .section { padding: 64px 0; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; border-top: 1px solid var(--line); }
  .nav-links a:first-child { border-top: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .btn { width: 100%; min-width: 0; }
  .qr-card { padding: 32px 24px 28px; }
  .marquee-track { gap: 40px; animation-duration: 26s; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   index.html — 首页
   ============================================================ */

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 140px 0 72px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}
.hero-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero .hero-photo { object-position: center bottom; }
.hero-photo-up { object-position: center 70%; }
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(250,247,242,.96) 0%,
    rgba(250,247,242,.85) 35%,
    rgba(250,247,242,.55) 70%,
    rgba(250,247,242,.35) 100%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  z-index: 2;
  top: -20%;
  right: -10%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(37,99,235,0.08), transparent 65%);
}
.hero-inner { position: relative; width: 100%; }
.hero .eyebrow { margin-bottom: 28px; }
.hero-title { max-width: 14em; }
.hero-lead { margin: 28px 0 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  margin-top: 72px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 56px;
}
.hero-stat { position: relative; }
.hero-stat + .hero-stat::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
.hero-stat .num { font-size: clamp(34px, 4.5vw, 52px); display: block; line-height: 1.1; }
.hero-stat .num-grad { font-size: clamp(34px, 4.5vw, 52px); font-weight: 800; display: block; line-height: 1.1; }
.hero-stat span.label { font-size: 14px; color: var(--ink-2); display: block; margin-top: 6px; }

/* ---------- 优势 01-04（编辑式大列表） ---------- */
.adv-list { border-top: 1px solid var(--line); }
.adv-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left var(--t);
}
.adv-item:hover { padding-left: 12px; }
.adv-no {
  font-family: var(--serif);
  font-size: clamp(44px, 5vw, 68px);
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink-3);
}
.adv-item:hover .adv-no {
  -webkit-text-stroke-color: var(--ai-blue);
}
.adv-body h3 {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 30px);
  margin-bottom: 8px;
}
.adv-body p { color: var(--ink-2); font-size: 16px; max-width: 520px; }
.adv-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--ai-blue);
  border: 1px solid var(--line);
  transition: background var(--t), color var(--t), border-color var(--t);
}
.adv-item:hover .adv-icon {
  background: var(--grad-ai);
  color: #fff;
  border-color: transparent;
}

/* ---------- 服务入口横幅 ---------- */
.entry { display: block; }
.entry + .entry { border-top: 1px solid var(--line); }
.entry-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  padding: 80px 0;
}
.entry-media {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.entry-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.entry:hover .entry-media img { transform: scale(1.04); }
.entry-body .entry-kicker {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--ai-blue);
  margin-bottom: 16px;
}
.entry-body h3 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 42px);
  margin-bottom: 14px;
}
.entry-body p { color: var(--ink-2); margin-bottom: 28px; max-width: 420px; }
.entry-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 4px;
  transition: color var(--t), border-color var(--t);
}
.entry-link .svg-icon { width: 18px; height: 18px; transition: transform var(--t); }
.entry:hover .entry-link { color: var(--ai-blue); border-color: var(--ai-blue); }
.entry:hover .entry-link .svg-icon { transform: translateX(4px); }
.entry--flip .entry-inner { direction: rtl; }
.entry--flip .entry-inner > * { direction: ltr; }

/* ---------- 七区速览 ---------- */
.district-bars { margin-top: 48px; }
.dbar {
  display: grid;
  grid-template-columns: 88px 1fr 110px;
  align-items: center;
  gap: 20px;
  padding: 14px 0;
}
.dbar-name { font-weight: 600; font-size: 16px; }
.dbar-track {
  height: 12px;
  background: var(--paper-warm);
  border-radius: 99px;
  overflow: hidden;
}
.dbar-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: var(--grad-ai);
  transform-origin: left;
}
.dbar-price {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 17px;
}
.dbar-price .num-grad { font-weight: 800; }
.dbar-price small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-3);
}
.section-more {
  margin-top: 36px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--ai-blue);
}
.section-more .svg-icon { width: 18px; height: 18px; transition: transform var(--t); }
.section-more:hover .svg-icon { transform: translateX(4px); }

/* ---------- CTA ---------- */
.cta-band { text-align: center; }
.cta-band .h-section { max-width: 16em; margin: 0 auto 36px; }

/* ---------- 首页响应式 ---------- */
@media (max-width: 900px) {
  .hero { padding-top: 120px; }
  .hero-stats { gap: 32px; flex-wrap: wrap; }
  .hero-stat + .hero-stat::before { display: none; }
  .adv-item { grid-template-columns: 72px 1fr; gap: 20px; }
  .adv-icon { display: none; }
  .entry-inner { grid-template-columns: 1fr; gap: 28px; padding: 56px 0; }
  .entry--flip .entry-inner { direction: ltr; }
  .entry--flip .entry-media { order: -1; }
}
@media (max-width: 560px) {
  .hero-actions .btn { width: 100%; }
  .dbar { grid-template-columns: 72px 1fr 88px; gap: 12px; }
  .dbar-price { font-size: 15px; }
}

/* ============================================================
   second-hand.html — AI+二手房
   ============================================================ */

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  padding: 180px 0 80px;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 720px;
}
.page-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -15%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(37,99,235,0.07), transparent 65%);
  pointer-events: none;
}
.page-hero .container { position: relative; width: 100%; }
.page-hero .h-display { font-size: clamp(40px, 6.5vw, 76px); margin: 16px 0 24px; }
.page-hero-stats {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}
.page-hero-stats .num, .page-hero-stats .num-grad {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  display: block;
  line-height: 1.1;
}
.page-hero-stats .label { font-size: 14px; color: var(--ink-2); display: block; margin-top: 6px; }

/* ---------- 七区房价全景 ---------- */
.drow-wrap { position: relative; margin-top: 48px; }
.drow {
  position: relative;
  display: grid;
  grid-template-columns: 190px 1fr 260px;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.drow:first-child { border-top: 1px solid var(--line); }
.drow-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 14px;
}
.drow-avatar {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  object-fit: cover;
  flex: none;
  transition: transform var(--t), box-shadow var(--t);
}
.drow:hover .drow-avatar {
  transform: scale(1.08);
  box-shadow: 0 8px 20px rgba(26,24,21,0.20);
}
/* 排名明度阶梯：第 1 名完整渐变，其余递减 */
.drow[data-rank="0"] .drow-name { background: var(--grad-ai); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.drow[data-rank="0"] .drow-meta span:first-child b { background: var(--grad-ai); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.drow[data-rank="1"] .drow-fill { opacity: 0.75; }
.drow[data-rank="2"] .drow-fill { opacity: 0.6; }
.drow[data-rank="3"] .drow-fill { opacity: 0.5; }
.drow[data-rank="4"] .drow-fill { opacity: 0.42; }
.drow[data-rank="5"] .drow-fill { opacity: 0.35; }
.drow[data-rank="6"] .drow-fill { opacity: 0.3; }
.drow-bar { height: 14px; background: var(--paper-warm); border-radius: 99px; overflow: hidden; }
.drow-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: var(--grad-ai);
  transform-origin: left;
}
.drow-meta {
  display: flex;
  justify-content: flex-end;
  gap: 28px;
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--ink-2);
}
.drow-meta b { display: block; font-size: 19px; color: var(--ink); font-weight: 800; }

/* ---------- 趋势图 ---------- */
.trend-box { margin-top: 48px; }
.trend-svg { width: 100%; height: auto; display: block; }
.trend-legend {
  display: flex;
  gap: 28px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--ink-2);
}
.trend-legend i {
  display: inline-block;
  width: 20px; height: 4px;
  border-radius: 2px;
  margin-right: 8px;
  vertical-align: middle;
}
.trend-legend .lg-deals i { background: var(--grad-ai); }
.trend-legend .lg-price i { background: var(--ink); }
.trend-note { font-size: 13px; color: var(--ink-3); margin-top: 16px; }

/* ---------- 购房门槛 ---------- */
.threshold {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: center;
}
.threshold-big .num-grad {
  font-size: clamp(72px, 9vw, 128px);
  font-weight: 800;
  line-height: 1;
  display: block;
}
.stackbar {
  display: flex;
  height: 56px;
  border-radius: 12px;
  overflow: hidden;
  margin-top: 32px;
}
.stackbar-seg {
  position: relative;
  transform-origin: left;
}
.stackbar-legend { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; }
.stackbar-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
}
.stackbar-legend i { width: 12px; height: 12px; border-radius: 4px; flex: none; }
.stackbar-legend b { margin-left: auto; font-variant-numeric: tabular-nums; color: var(--ink); }

/* ---------- 学区 ---------- */
.school-sec {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 72px;
  align-items: start;
}
.sbar {
  display: grid;
  grid-template-columns: 148px 1fr 92px;
  align-items: center;
  gap: 16px;
  padding: 13px 0;
}
.sbar-name { font-size: 15px; font-weight: 600; }
.sbar-track { height: 10px; background: rgba(250,247,242,0.18); border-radius: 99px; overflow: hidden; }
.sbar-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #E0C878, #C9A96A);
  transform-origin: left;
}
.sbar-price { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; font-size: 16px; color: #E0C878; }
.sbar-price small { font-size: 10px; font-weight: 400; color: var(--ink-3); margin-left: 2px; }

/* 学区深色区块 */
.school-dark {
  background: var(--ink);
  color: var(--paper);
}
.school-dark .h-section, .school-dark h3 { color: var(--paper); }
.school-dark .lead, .school-dark p { color: var(--ink-3); }
.school-dark .eyebrow { color: var(--ink-3); }
.school-dark .eyebrow::before { background: var(--gold); }

/* ---------- 步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  margin-top: 48px;
}
.step {
  padding: 36px 28px 0 0;
  position: relative;
}
.step + .step { border-left: 1px solid var(--line); padding-left: 28px; }
.step-no {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  background: var(--grad-ai);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.step h3 { font-size: 19px; margin: 14px 0 8px; }
.step p { font-size: 14px; color: var(--ink-2); }

/* ---------- 二手房页响应式 ---------- */
@media (max-width: 900px) {
  .drow { grid-template-columns: 1fr; gap: 10px; }
  .drow-meta { grid-column: 1 / -1; justify-content: flex-start; gap: 32px; }
  .threshold, .school-sec { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step + .step { border-left: none; padding-left: 0; }
  .step:nth-child(even) { border-left: 1px solid var(--line); padding-left: 28px; }
  .step { padding-bottom: 28px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .step:nth-child(even) { border-left: none; padding-left: 0; }
  .step { border-top: 1px solid var(--line); }
  .step:first-child { border-top: none; }
  .sbar { grid-template-columns: 112px 1fr 76px; }
  .sbar-price { font-size: 14px; }
  .stackbar-legend { grid-template-columns: 1fr; }
}

/* ============================================================
   rental.html — AI+租房（双轨）
   ============================================================ */

/* ---------- 双轨切换 ---------- */
.track-switch {
  display: flex;
  gap: 48px;
  margin-top: 40px;
  border-bottom: 1px solid var(--line);
}
.track-btn {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 700;
  color: var(--ink-2);
  padding: 0 0 18px;
  position: relative;
  transition: color var(--t);
}
.track-btn::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1.5px;
  height: 3px;
  background: transparent;
  transition: background var(--t);
}
.track-btn:hover { color: var(--ink); }
.track-btn.active { color: var(--ink); }
.track-btn.active[data-track-btn="rent"]::after { background: var(--grad-ai); }
.track-btn.active[data-track-btn="host"]::after { background: var(--gold); }

.track-panel { display: none; }
.track-panel.active { display: block; }

/* 托管轨金色主题 */
.track-panel[data-panel="host"] .step-no {
  background: linear-gradient(120deg, #C9A96A, #E0C878);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.track-panel[data-panel="host"] .eyebrow::before { background: var(--gold); }

/* ---------- 房源（图注式，无卡片框） ---------- */
.listings {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 40px;
  margin-top: 56px;
}
.listing figure {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.listing img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.listing:hover img { transform: scale(1.03); }
.listing-info { padding-top: 18px; }
.listing-info h3 {
  font-family: var(--serif);
  font-size: 21px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.listing-price {
  font-family: var(--sans);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: 20px;
  white-space: nowrap;
}
.track-panel[data-panel="rent"] .listing-price { color: var(--ai-blue); }
.track-panel[data-panel="host"] .listing-price { color: var(--gold); }
.listing-meta { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
.listing-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.listing-tags span {
  font-size: 12.5px;
  padding: 4px 12px;
  border-radius: 99px;
  border: 1px solid var(--line);
  color: var(--ink-2);
}
.track-panel[data-panel="rent"] .listing-tags span { border-color: rgba(37,99,235,0.25); color: var(--ai-blue); }
.track-panel[data-panel="host"] .listing-tags span { border-color: rgba(201,169,106,0.4); color: var(--gold); }

/* 托管对比图 */
.compare-img {
  border-radius: 12px;
  overflow: hidden;
  margin-top: 48px;
}
.compare-img img { width: 100%; height: auto; }

/* 托管房源大图 */
.listings--big .listing figure { aspect-ratio: 16 / 11; }

/* ---------- 租房页响应式 ---------- */
@media (max-width: 900px) {
  .listings { grid-template-columns: 1fr; gap: 40px; }
  .track-switch { gap: 32px; }
}
@media (max-width: 560px) {
  .track-switch { gap: 24px; }
  .listing-info h3 { font-size: 19px; flex-direction: column; gap: 4px; }
}