@charset "utf-8";
/* ============================================================
   嗖嗖卖.房  —  站点样式
   设计基调：简约 · 大气 · 留白充足
   响应式：PC(≥1200) / 平板(768–1199) / 手机(<768)
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --brand-900: #0B1B2C;
  --brand-800: #102A42;
  --brand-700: #16324F;
  --brand-500: #2A5C8A;
  --brand-100: #EEF3F8;

  --gold: #C8A56A;
  --gold-dark: #AC8B4E;
  --gold-soft: #FBF6EC;

  --bg: #FFFFFF;
  --bg-soft: #F5F7FA;
  --bg-deep: #0B1B2C;

  --text: #1B2733;
  --text-soft: #4A5A6B;
  --muted: #8A97A6;
  --line: #E3E8EF;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(11, 27, 44, .06);
  --shadow: 0 8px 28px rgba(11, 27, 44, .09);
  --shadow-lg: 0 18px 48px rgba(11, 27, 44, .14);

  --container: 1200px;
  --header-h: 72px;

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

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 880px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.header.is-scrolled { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }

.header__inner {
  height: 100%; display: flex; align-items: center; gap: 32px;
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
}

.logo { display: flex; align-items: baseline; gap: 2px; font-weight: 700; font-size: 21px; letter-spacing: -.02em; }
.logo__mark { color: var(--brand-700); }
.logo__dot { color: var(--gold); }
.logo__tld { color: var(--gold); font-size: 17px; }

.nav { display: flex; gap: 30px; margin-left: auto; }
.nav a { font-size: 15px; color: var(--text-soft); position: relative; padding: 4px 0; }
.nav a:hover { color: var(--brand-700); }
.nav a.is-active { color: var(--brand-700); font-weight: 600; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--gold); border-radius: 2px;
}

.header__contact { display: flex; align-items: center; gap: 14px; }
.tel { display: flex; align-items: center; gap: 7px; font-size: 15px; font-weight: 600; color: var(--brand-700); }
.tel svg { width: 16px; height: 16px; fill: var(--gold); flex: none; }

.burger { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; }
.burger span { display: block; width: 22px; height: 2px; background: var(--brand-900); position: relative; transition: .25s; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: var(--brand-900); transition: .25s;
}
.burger span::before { top: -7px; } .burger span::after { top: 7px; }
.burger.is-open span { background: transparent; }
.burger.is-open span::before { top: 0; transform: rotate(45deg); }
.burger.is-open span::after { top: 0; transform: rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: #fff; padding: 24px; transform: translateY(-12px);
  opacity: 0; visibility: hidden; transition: .25s;
  display: none; overflow-y: auto;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: none; }
.drawer a { display: block; padding: 16px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
.drawer .drawer__tel { margin-top: 28px; font-size: 20px; font-weight: 700; color: var(--brand-700); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 26px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; letter-spacing: .01em;
  transition: transform .18s, box-shadow .18s, background .18s;
  white-space: nowrap;
}
.btn--primary { background: var(--brand-700); color: #fff; box-shadow: 0 4px 14px rgba(22, 50, 79, .22); }
.btn--primary:hover { background: var(--brand-800); transform: translateY(-1px); box-shadow: 0 8px 22px rgba(22, 50, 79, .28); }
.btn--gold { background: var(--gold); color: #2B2008; box-shadow: 0 4px 14px rgba(200, 165, 106, .3); }
.btn--gold:hover { background: var(--gold-dark); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn--ghost:hover { background: rgba(255,255,255,.1); }
.btn--block { width: 100%; }
.btn--lg { height: 52px; font-size: 16px; padding: 0 32px; }

/* ---------- 区块通用 ---------- */
.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--deep { background: var(--bg-deep); color: #fff; }
.section__head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section__eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold-dark); font-weight: 600; margin-bottom: 14px;
}
.section--deep .section__eyebrow { color: var(--gold); }
.section__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; line-height: 1.35; letter-spacing: -.02em; }
.section__sub { margin-top: 16px; font-size: 16px; color: var(--text-soft); }
.section--deep .section__sub { color: rgba(255,255,255,.7); }
.section__head::after {
  content: ""; display: block; width: 48px; height: 3px; background: var(--gold);
  margin: 24px auto 0; border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: calc(var(--header-h) + 72px) 0 88px;
  background:
    radial-gradient(1100px 460px at 78% -10%, rgba(42,92,138,.13), transparent 60%),
    linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; right: -160px; top: -120px;
  width: 620px; height: 620px; border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(200,165,106,.16), transparent 62%);
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px;
  background: var(--gold-soft); border: 1px solid rgba(200,165,106,.35);
  border-radius: 100px; font-size: 13px; color: var(--gold-dark); font-weight: 600;
}
.hero__badge i { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); display: block; }
.hero__title {
  margin-top: 24px; font-size: clamp(32px, 5vw, 54px); font-weight: 800;
  line-height: 1.22; letter-spacing: -.03em; color: var(--brand-900);
}
.hero__title em {
  font-style: normal; color: var(--brand-700);
  background: linear-gradient(180deg, transparent 62%, rgba(200, 165, 106, .38) 62%);
  padding: 0 2px;
}
.hero__desc { margin-top: 22px; font-size: 17px; color: var(--text-soft); line-height: 1.85; max-width: 520px; }
.hero__points { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 10px 26px; }
.hero__points li { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--text); }
.hero__points svg { width: 17px; height: 17px; fill: var(--gold-dark); flex: none; }
.hero__actions { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 卖房表单卡 */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 32px;
}
.card__title { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.card__note { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--text-soft); margin-bottom: 7px; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%; height: 46px; padding: 0 14px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; transition: border-color .2s, box-shadow .2s;
}
.field textarea { height: 92px; padding: 12px 14px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 0; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(42,92,138,.12);
}
.field--full { grid-column: 1 / -1; }
.field__err { display: none; margin-top: 6px; font-size: 12.5px; color: #D0453B; }
.field.is-error input { border-color: #D0453B; }
.field.is-error .field__err { display: block; }
.form-consent { margin-top: 6px; font-size: 12.5px; color: var(--muted); line-height: 1.6; }

/* ---------- 优势三卡 ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px 30px; transition: transform .25s, box-shadow .25s;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature__icon {
  width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center;
  background: var(--brand-100); margin-bottom: 22px;
}
.feature__icon svg { width: 24px; height: 24px; fill: var(--brand-700); }
.feature h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature p { font-size: 15px; color: var(--text-soft); line-height: 1.75; }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.14); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--bg-deep); padding: 38px 24px; text-align: center; }
.stat__num { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; color: var(--gold); letter-spacing: -.02em; line-height: 1.1; }
.stat__num small { font-size: .5em; font-weight: 700; margin-left: 3px; }
.stat__label { margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.68); }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.step { position: relative; text-align: center; padding: 0 12px; }
.step__num {
  width: 56px; height: 56px; margin: 0 auto 22px; border-radius: 50%;
  background: var(--brand-700); color: #fff; display: grid; place-items: center;
  font-size: 20px; font-weight: 700; box-shadow: 0 8px 20px rgba(22,50,79,.24);
}
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 27px; left: calc(50% + 42px); right: calc(-50% + 42px);
  height: 1px; background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 12px);
}
.step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 14.5px; color: var(--text-soft); }

/* ---------- 成交案例 ---------- */
.deals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.deal {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .25s, box-shadow .25s;
}
.deal:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.deal__thumb {
  height: 168px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 15px;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-800));
  position: relative;
}
.deal__thumb span { opacity: .9; letter-spacing: .04em; }
.deal__tag {
  position: absolute; left: 14px; top: 14px; padding: 4px 11px; border-radius: 100px;
  background: rgba(255,255,255,.94); color: var(--brand-700); font-size: 12px; font-weight: 600;
}
.deal__body { padding: 22px; }
.deal__title { font-size: 16.5px; font-weight: 700; margin-bottom: 12px; }
.deal__meta { display: flex; gap: 18px; font-size: 13.5px; color: var(--text-soft); }
.deal__meta b { color: var(--brand-700); font-weight: 700; }
.deal__foot {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--muted);
}
.deal__foot .pill { padding: 3px 10px; border-radius: 100px; background: var(--gold-soft); color: var(--gold-dark); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  width: 100%; display: flex; align-items: center; gap: 16px; padding: 22px 0;
  text-align: left; font-size: 16.5px; font-weight: 600; color: var(--text);
}
.faq__q span:first-child { color: var(--gold-dark); font-weight: 700; flex: none; }
.faq__q .arrow { margin-left: auto; width: 18px; height: 18px; fill: var(--muted); transition: transform .25s; flex: none; }
.faq__item.is-open .arrow { transform: rotate(180deg); }
.faq__a { display: none; padding: 0 0 24px 38px; color: var(--text-soft); font-size: 15px; }
.faq__item.is-open .faq__a { display: block; }
.faq__a p { margin-bottom: 8px; }
.faq__a p:last-child { margin-bottom: 0; }

/* ---------- 底部 CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--brand-800), var(--brand-500));
  border-radius: 20px; padding: 56px 48px; color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(22px, 2.8vw, 30px); font-weight: 700; letter-spacing: -.02em; }
.cta-band p { margin-top: 10px; color: rgba(255,255,255,.75); font-size: 15px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { background: var(--brand-900); color: rgba(255,255,255,.62); padding: 64px 0 28px; font-size: 14px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer .logo { color: #fff; margin-bottom: 18px; }
.footer .logo__mark, .footer .logo__dot, .footer .logo__tld { color: #fff; }
.footer__desc { line-height: 1.8; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer li { margin-bottom: 11px; }
.footer li a:hover { color: var(--gold); }
.footer__contact p { margin-bottom: 11px; line-height: 1.8; }
.footer__tel { font-size: 24px; font-weight: 800; color: var(--gold); letter-spacing: .01em; display: block; margin-bottom: 14px; }
.footer__bottom {
  padding-top: 24px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255,255,255,.42);
}

/* ---------- 页面内页头 ---------- */
.pagehead {
  padding: calc(var(--header-h) + 64px) 0 56px;
  background: linear-gradient(180deg, var(--brand-100), #fff);
  text-align: center;
}
.pagehead h1 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: -.02em; color: var(--brand-900); }
.pagehead p { margin-top: 14px; color: var(--text-soft); font-size: 16px; }

/* ---------- 通用内容块 ---------- */
.prose { max-width: 820px; margin: 0 auto; }
.prose h2 { font-size: 24px; font-weight: 700; margin: 40px 0 16px; }
.prose h3 { font-size: 18px; font-weight: 700; margin: 28px 0 12px; }
.prose p { margin-bottom: 16px; color: var(--text-soft); line-height: 1.9; }
.prose ul { margin: 0 0 18px; }
.prose li { padding-left: 22px; position: relative; margin-bottom: 10px; color: var(--text-soft); line-height: 1.85; }
.prose li::before {
  content: ""; position: absolute; left: 4px; top: 12px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--gold);
}

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split__visual {
  aspect-ratio: 4 / 3; border-radius: var(--radius); display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-800)); color: #fff;
  font-weight: 700; font-size: 18px; letter-spacing: .04em; box-shadow: var(--shadow);
}

/* 估价结果 */
.result {
  margin-top: 24px; padding: 28px; border-radius: var(--radius);
  background: var(--gold-soft); border: 1px solid rgba(200,165,106,.4); display: none;
}
.result.is-show { display: block; }
.result__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.result__num { font-size: 32px; font-weight: 800; color: var(--brand-700); letter-spacing: -.02em; }
.result__num small { font-size: 15px; font-weight: 600; margin-left: 4px; }
.result__label { font-size: 13px; color: var(--text-soft); margin-top: 4px; }
.result__tip { margin-top: 18px; padding-top: 16px; border-top: 1px dashed rgba(200,165,106,.5); font-size: 13px; color: var(--text-soft); }

/* 加盟优势 */
.perks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.perk { display: flex; gap: 16px; padding: 24px; background: var(--bg-soft); border-radius: var(--radius); }
.perk__n { width: 34px; height: 34px; border-radius: 9px; background: var(--brand-700); color: #fff; display: grid; place-items: center; font-size: 15px; font-weight: 700; flex: none; }
.perk h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.perk p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1100px) {
  .features { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .feature { padding: 30px 24px; }
  .deals { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 44px; }
  .hero { padding-top: calc(var(--header-h) + 48px); }
  .hero__desc { max-width: none; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split__visual { order: -1; }
  .section { padding: 72px 0; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .step:not(:last-child)::after { display: none; }
  .nav { display: none; }
  .burger { display: flex; margin-left: auto; }
  .drawer { display: block; }
  .header__contact .tel { display: none; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 640px) {
  :root { --header-h: 62px; }
  .container { padding: 0 18px; }
  .header__inner { padding: 0 18px; gap: 12px; }
  .logo { font-size: 18px; }
  .features { grid-template-columns: 1fr; }
  .deals { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 26px 14px; }
  .perks { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; }
  .section { padding: 56px 0; }
  .section__head { margin-bottom: 40px; }
  .card { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 24px; border-radius: 16px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn { flex: 1; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .result__grid { grid-template-columns: 1fr; gap: 16px; }
  .btn { padding: 0 18px; }
  .faq__q { font-size: 15.5px; padding: 18px 0; }
  .faq__a { padding-left: 0; }
}

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}