:root {
  --black: #151210;
  --brown: #3a2519;
  --brown-soft: #5c4030;
  --gold: #b08a48;
  --gold-dark: #8c6a32;
  --cream: #f7f1e7;
  --paper: #fffaf2;
  --line: #e4d6c2;
  --muted: #6f6257;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(49, 32, 20, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--black);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  background: var(--cream);
}

/* 全站统一品牌水印：使用完整品牌标志，包含中文与英文名称。 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  background: url("../img/siqi-finance-logo-full.png?v=20260714-full-watermark-v5") center / min(58vw, 620px) auto no-repeat;
  opacity: 0.045;
  mix-blend-mode: multiply;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 250, 242, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  max-width: 1180px;
  min-height: 72px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 160px;
}

/* 顶部仅使用品牌金色“思”字图形；不显示旧版带边框标志。 */
.brand img,
.home-v2 .logo-img {
  display: none;
}

.brand::before,
.home-v2 .logo::before {
  content: "";
  display: block;
  flex: 0 0 auto;
  width: 34px;
  height: 39px;
  background: url("../img/brand-mark-full-si.png?v=20260714-full-mark-v3") center / contain no-repeat;
}

.brand::before {
  width: 32px;
  height: 37px;
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
  color: var(--brown);
}

.brand span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 15px;
  color: var(--brown);
}

.main-nav a:hover,
.main-nav a.active {
  background: #efe1cd;
  color: var(--black);
}

.header-phone {
  white-space: nowrap;
  padding: 9px 14px;
  border: 1px solid var(--gold);
  border-radius: 6px;
  color: var(--brown);
  font-weight: 700;
  background: #fff6e7;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--brown);
  font-size: 24px;
}

.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(21, 18, 16, 0.92), rgba(58, 37, 25, 0.76), rgba(21, 18, 16, 0.5)),
    url("../img/hero-finance.svg") center/cover no-repeat;
}

.hero.compact {
  min-height: 340px;
}

.hero-inner,
.section-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero h1 {
  max-width: 760px;
  margin: 0 0 18px;
  font-size: clamp(36px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p {
  max-width: 700px;
  margin: 0 0 28px;
  color: #f4e8d5;
  font-size: clamp(18px, 2.4vw, 24px);
}

.hero-actions,
.cta-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.stats-band {
  margin-top: -58px;
  padding: 0 0 38px;
  position: relative;
  z-index: 2;
  background: transparent;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat-card {
  min-height: 120px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-card strong {
  display: block;
  color: var(--brown);
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1;
}

.stat-card span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--gold);
  border-radius: 6px;
  background: var(--gold);
  color: var(--black);
  font-weight: 700;
  cursor: pointer;
}

.btn:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--white);
}

.btn.secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn.light {
  background: var(--paper);
  color: var(--brown);
}

main section {
  padding: 70px 0;
}

.section-title {
  margin-bottom: 30px;
}

.section-title .eyebrow,
.eyebrow {
  margin: 0 0 8px;
  color: var(--gold-dark);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

.section-title h2,
.content h2 {
  margin: 0;
  color: var(--brown);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
}

.section-title p {
  max-width: 720px;
  margin: 10px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 18px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.faq-item,
.service-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.card {
  padding: 24px;
}

.service-grid {
  align-items: stretch;
}

.service-card,
.reason-card {
  min-height: 230px;
}

.card h3 {
  margin: 0 0 10px;
  color: var(--brown);
  font-size: 22px;
}

.card p,
.card li,
.content p,
.content li {
  color: var(--muted);
}

.card ul,
.content ul {
  padding-left: 20px;
  margin: 10px 0 0;
}

.service-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: var(--brown);
  color: var(--gold);
  font-weight: 900;
}

.reason-grid {
  align-items: stretch;
}

.reason-card span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gold);
  color: var(--black);
  font-weight: 900;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: process;
}

.process-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.process-grid strong {
  display: inline-flex;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: var(--brown);
  color: var(--gold);
}

.process-grid h3 {
  margin: 0 0 10px;
  color: var(--brown);
  font-size: 22px;
}

.process-grid p {
  margin: 0;
  color: var(--muted);
}

.band {
  background: #efe3d2;
}

.industry-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid #d8bf92;
  background: #fff5df;
  color: var(--brown);
  font-size: 13px;
  font-weight: 700;
}

.faq-preview a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.faq-preview a:first-child {
  border-radius: 8px 8px 0 0;
}

.faq-preview a:last-child {
  border-bottom: 0;
  border-radius: 0 0 8px 8px;
}

.faq-preview span {
  color: var(--gold-dark);
  font-weight: 900;
}

.cta-band {
  background: var(--brown);
  color: var(--white);
}

.cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.cta-box h2 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 42px);
}

.cta-box p {
  margin: 0;
  color: #eadcc8;
}

.page-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: start;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline div {
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}

.faq-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.filter-btn {
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--brown);
  cursor: pointer;
  font-weight: 700;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--brown);
  border-color: var(--brown);
  color: var(--white);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 0;
  background: var(--paper);
  color: var(--brown);
  text-align: left;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.faq-question .meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-answer {
  display: none;
  padding: 0 20px 20px;
  color: var(--muted);
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer h4 {
  margin: 16px 0 8px;
  color: var(--brown);
}

.policy {
  margin-top: 14px;
  padding: 12px 14px;
  border-left: 4px solid var(--gold);
  background: #f3e6d4;
  color: var(--brown);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
}

.qr-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.qr-box {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(52, 38, 26, 0.08);
  text-align: center;
}

.qr-box img {
  width: 160px;
  aspect-ratio: 1;
  object-fit: contain;
  margin: 0 auto 10px;
}

.wechat-qr-crop {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: #fff;
}

.wechat-qr-crop img,
.qr-box .wechat-qr-crop img {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  margin: 0;
  transform: none;
}

.qr-box .wechat-qr-crop {
  width: 160px;
  max-width: 100%;
  margin: 0 auto 10px;
}

.industry-qr-section {
  padding: 0 0 48px;
}

.industry-qr-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 36px rgba(52, 38, 26, 0.09);
}

.industry-qr-card h2 {
  margin: 0 0 10px;
}

.industry-qr-card p {
  margin: 0;
  color: var(--muted);
}

.industry-qr-image {
  text-align: center;
}

.industry-qr-image img {
  width: 150px;
  aspect-ratio: 1;
  margin: 0 auto 8px;
  object-fit: contain;
}

.industry-qr-image strong {
  display: block;
  color: var(--brown);
  font-size: 14px;
}

.form-grid {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--brown);
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 13px;
  background: var(--white);
  color: var(--black);
  font: inherit;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.site-footer {
  background: var(--black);
  color: #eadcc8;
  padding: 44px 0 26px;
}

.footer-grid {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.9fr 0.9fr;
  gap: 26px;
  align-items: start;
}

.site-footer h3,
.site-footer h4 {
  margin: 0 0 10px;
  color: var(--white);
}

.site-footer a {
  display: block;
  margin: 4px 0;
}

.site-footer span {
  display: block;
  margin: 4px 0;
}

.footer-qr {
  width: 112px;
  padding: 8px;
  border-radius: 8px;
  background: var(--paper);
}

.copyright {
  width: min(1180px, calc(100% - 40px));
  margin: 24px auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: #b9aa97;
  font-size: 14px;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--gold);
  color: var(--black);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.wechat-float {
  position: fixed;
  right: 18px;
  bottom: 74px;
  z-index: 60;
  min-width: 54px;
  height: 54px;
  padding: 0 10px;
  border: 0;
  border-radius: 50%;
  background: var(--brown);
  color: var(--gold);
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
}

.wechat-float:hover {
  background: var(--black);
}

.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(21, 18, 16, 0.56);
}

.qr-modal.open {
  display: grid;
}

.qr-modal-panel {
  position: relative;
  width: min(360px, 100%);
  padding: 28px 24px 24px;
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 24px 80px rgba(21, 18, 16, 0.28);
  text-align: center;
}

.qr-modal-panel h2 {
  margin: 0 0 14px;
  color: var(--brown);
  font-size: 24px;
}

.qr-modal-panel img {
  width: 220px;
  margin: 0 auto 12px;
}

.qr-modal-panel p {
  margin: 0;
  color: var(--muted);
}

.qr-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  color: var(--brown);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 900px) {
  .nav-wrap {
    flex-wrap: wrap;
    min-height: 66px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    padding: 0 0 14px;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px;
  }

  .header-phone {
    margin-left: auto;
    font-size: 14px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .stats-grid,
  .process-grid,
  .page-layout,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stats-band {
    margin-top: 0;
    padding: 40px 0 20px;
    background: var(--cream);
  }

  .hero {
    min-height: 520px;
  }

  .cta-box {
    align-items: flex-start;
    flex-direction: column;
  }

  .industry-qr-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 560px) {
  .nav-wrap,
  .hero-inner,
  .section-inner,
  .footer-grid,
  .copyright {
    width: min(100% - 28px, 1180px);
    padding-left: 0;
    padding-right: 0;
  }

  .brand strong {
    font-size: 16px;
  }

  .brand span {
    display: none;
  }

  .header-phone {
    width: 100%;
    order: 4;
    text-align: center;
  }

  main section {
    padding: 50px 0;
  }

  .hero.compact {
    min-height: 310px;
  }

  .qr-row {
    grid-template-columns: 1fr;
  }

  .industry-qr-section {
    padding: 0 0 36px;
  }

  .industry-qr-card {
    padding: 22px 18px;
  }

  .faq-question {
    align-items: flex-start;
  }

  .faq-question .meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .wechat-float {
    right: 14px;
    bottom: 72px;
  }
}

/* 首页同款页眉页脚：供所有独立内容页复用，不影响各页正文样式。 */
.site-header.site-header--home {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid #dfe5e8;
  box-shadow: 0 5px 20px rgba(25, 50, 74, 0.05);
  backdrop-filter: blur(12px);
}

.site-header--home .header-inner,
.site-footer--home .footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header--home .header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header--home .logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: #19324a;
  font-size: 19px;
  font-weight: 800;
}

.site-header--home .logo-img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.site-header--home nav { flex: 1; }

.site-header--home .nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header--home .nav-links a {
  display: block;
  padding: 9px 11px;
  border-radius: 6px;
  color: #344551;
  font-size: 15px;
  font-weight: 600;
}

.site-header--home .nav-links a:hover,
.site-header--home .nav-links a.active {
  color: #19324a;
  background: #edf2f4;
}

.site-header--home .mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid #dfe5e8;
  border-radius: 6px;
  background: #ffffff;
  color: #19324a;
  font-size: 22px;
  cursor: pointer;
}

.site-footer.site-footer--home {
  padding: 58px 0 0;
  background: #111d27;
  color: #c7d1d7;
}

.site-footer--home .footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.72fr) minmax(0, 1.18fr) minmax(0, 0.86fr) minmax(0, 0.78fr);
  align-items: start;
  gap: 34px;
}

.site-footer--home .footer-col h4 {
  margin: 0 0 14px;
  color: #ffffff;
  font-size: 16px;
}

.site-footer--home .footer-col p {
  margin: 0;
  color: #aebbc3;
  font-size: 13px;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.site-footer--home .location-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #aebbc3;
  font-size: 13px;
  line-height: 1.65;
}

.site-footer--home .location-list strong,
.site-footer--home .location-list span {
  display: block;
}

.site-footer--home .location-list strong {
  margin-bottom: 2px;
  color: #f2d89d;
  font-size: 13px;
}

.site-footer--home .location-list span {
  overflow-wrap: anywhere;
}

.contact-locations {
  display: grid;
  gap: 12px;
  margin: 18px 0;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-locations p {
  margin: 0;
  line-height: 1.75;
}

.contact-locations strong {
  color: var(--brown);
}

.site-footer--home .footer-col a { color: inherit; }
.site-footer--home .footer-col a:hover { color: #f2d89d; }

.site-footer--home .footer-qr {
  width: 92px;
  padding: 5px;
  border-radius: 6px;
  background: #ffffff;
}

.site-footer--home .footer-qr img { width: 100%; height: auto; }

.site-footer--home .footer-wx-name {
  width: 92px;
  margin-top: 5px;
  text-align: center;
}

.site-footer--home .footer-bottom {
  margin-top: 38px;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.11);
  color: #8fa0ab;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 1040px) {
  .site-footer--home .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .site-header--home .header-inner { min-height: 68px; }
  .site-header--home nav {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    padding: 8px 20px 18px;
    border-bottom: 1px solid #dfe5e8;
    background: #ffffff;
    box-shadow: 0 14px 25px rgba(25, 50, 74, 0.1);
  }
  .site-header--home nav.open { display: block; }
  .site-header--home .nav-links { display: grid; gap: 2px; }
  .site-header--home .nav-links a { padding: 10px 12px; }
  .site-header--home .mobile-toggle { display: block; margin-left: auto; }
}

@media (max-width: 620px) {
  .site-header--home .header-inner,
  .site-footer--home .footer-inner { width: min(100% - 28px, 1180px); }
  .site-header--home .logo span { font-size: 17px; }
  .site-footer--home .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer--home .footer-qr,
  .site-footer--home .footer-wx-name { width: 100px; }
}