:root {
  color-scheme: dark;
  --bg: #07110f;
  --bg-2: #0c1c19;
  --ink: #f8f1e6;
  --muted: #b6aa98;
  --soft: rgba(248, 241, 230, 0.72);
  --line: rgba(216, 189, 134, 0.2);
  --gold: #d8bd86;
  --gold-2: #f1dfb8;
  --red: #f23b2f;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  --radius: 8px;
  --max: 1160px;
  font-family:
    "Noto Serif SC", "Songti SC", "STSong", "PingFang SC", "Microsoft YaHei",
    serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 8%, rgba(242, 59, 47, 0.15), transparent 26rem),
    linear-gradient(180deg, #050908 0%, var(--bg) 45%, #06100e 100%);
  color: var(--ink);
  min-width: 320px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(216, 189, 134, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(216, 189, 134, 0.035) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 75%);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: grid;
  gap: 2px;
  min-width: 174px;
}

.brand-mark {
  color: var(--ink);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
}

.brand-mark span {
  color: var(--red);
  margin-left: 4px;
}

.brand-url {
  color: var(--muted);
  font-family: "Inter", "PingFang SC", sans-serif;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.nav a {
  transition: color 160ms ease;
}

.nav a:hover {
  color: var(--gold-2);
}

.header-cta,
.primary-btn,
.secondary-btn,
.contact-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0 22px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.header-cta,
.primary-btn,
.contact-form button {
  background: var(--red);
  color: white;
  box-shadow: 0 16px 34px rgba(242, 59, 47, 0.24);
}

.secondary-btn {
  border-color: rgba(216, 189, 134, 0.36);
  color: var(--gold-2);
  background: rgba(216, 189, 134, 0.06);
}

.header-cta:hover,
.primary-btn:hover,
.secondary-btn:hover,
.contact-form button:hover {
  transform: translateY(-2px);
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 470px);
  align-items: center;
  gap: 64px;
  min-height: calc(100vh - 260px);
  padding: 12px 0 10px;
}

.hero-copy {
  position: relative;
}

.hero-copy::before {
  content: "";
  display: block;
  width: 92px;
  height: 8px;
  margin-bottom: 24px;
  background: var(--red);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 650px;
  font-size: clamp(52px, 7vw, 88px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 610px;
  margin-top: 20px;
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
  color: var(--gold-2);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.trust-line span {
  border-left: 2px solid var(--red);
  padding-left: 12px;
}

.hero-visual {
  position: relative;
  align-self: stretch;
  min-height: 470px;
  overflow: hidden;
  border: 1px solid rgba(216, 189, 134, 0.24);
  border-radius: var(--radius);
  background: #040807;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 45%;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 56%, rgba(3, 7, 6, 0.62));
}

.poster-note {
  position: absolute;
  right: 22px;
  bottom: 22px;
  z-index: 1;
  display: grid;
  gap: 4px;
  border-left: 4px solid var(--red);
  padding: 10px 0 10px 14px;
  text-align: right;
}

.poster-note strong {
  color: var(--gold-2);
  font-size: 24px;
  line-height: 1.1;
}

.poster-note span {
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.service-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(216, 189, 134, 0.055), rgba(255, 255, 255, 0.018));
  padding: 86px max(20px, calc((100vw - var(--max)) / 2));
}

.section-heading {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: 52px;
  align-items: end;
  margin-bottom: 38px;
}

h2 {
  color: var(--ink);
  font-size: clamp(34px, 4.5vw, 64px);
  font-weight: 900;
  line-height: 1.08;
}

.section-heading p,
.method-copy p,
.contact-copy p,
.expert-copy p {
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.9;
}

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

.service-item {
  min-height: 236px;
  border: 1px solid rgba(216, 189, 134, 0.18);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
}

.service-item .icon {
  display: inline-flex;
  color: var(--red);
  font-family: Georgia, serif;
  font-size: 20px;
  font-weight: 900;
}

h3 {
  margin-top: 28px;
  color: var(--gold-2);
  font-size: 24px;
  font-weight: 900;
  line-height: 1.22;
}

.service-item p {
  margin-top: 14px;
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.8;
}

.expert-section {
  display: grid;
  grid-template-columns: 390px minmax(0, 1fr);
  gap: 68px;
  align-items: center;
  padding: 100px 0;
}

.portrait-panel {
  border: 1px solid rgba(216, 189, 134, 0.22);
  border-radius: var(--radius);
  overflow: hidden;
  background: #050807;
  box-shadow: var(--shadow);
}

.portrait-panel img {
  width: 100%;
  aspect-ratio: 3 / 4.2;
  object-fit: cover;
  object-position: 50% 34%;
}

.source-note {
  padding: 14px 16px 16px;
  color: var(--muted);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  line-height: 1.7;
}

.expert-copy p {
  margin-top: 22px;
}

.expert-points {
  display: grid;
  gap: 12px;
  margin-top: 34px;
}

.expert-points div {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.expert-points strong {
  color: var(--gold-2);
}

.expert-points span {
  color: var(--soft);
  line-height: 1.7;
}

.method-section {
  padding: 88px max(20px, calc((100vw - var(--max)) / 2));
  background:
    linear-gradient(90deg, rgba(242, 59, 47, 0.14), transparent 44%),
    #101713;
}

.method-inner {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  gap: 60px;
  align-items: start;
}

.method-copy p {
  margin-top: 24px;
}

.method-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.method-list div {
  border: 1px solid rgba(216, 189, 134, 0.22);
  border-radius: var(--radius);
  padding: 24px;
  background: rgba(0, 0, 0, 0.16);
}

.method-list span {
  color: var(--red);
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 900;
}

.method-list strong {
  display: block;
  margin-top: 18px;
  color: var(--gold-2);
  font-size: 24px;
}

.method-list p {
  margin-top: 12px;
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.8;
}

.contact-section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 100px 0 92px;
}

.contact-copy {
  display: grid;
  grid-template-columns: 0.74fr 1fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 34px;
}

.contact-copy strong {
  color: var(--gold-2);
}

.contact-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--gold-2);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.contact-form label:nth-of-type(4),
.contact-form button,
.form-message {
  grid-column: 1 / -1;
}

.contact-form em {
  color: var(--red);
  font-style: normal;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(216, 189, 134, 0.22);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.26);
  color: var(--ink);
  font: 15px/1.5 "PingFang SC", "Microsoft YaHei", sans-serif;
  outline: none;
  padding: 13px 14px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 112px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--gold);
}

.contact-form button {
  width: 100%;
  cursor: pointer;
}

.form-message {
  min-height: 24px;
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.7;
}

.form-message.success {
  color: var(--gold-2);
}

.contact-side {
  display: grid;
  gap: 14px;
}

.contact-lines {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--surface);
  color: var(--gold-2);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

.qr-card {
  display: grid;
  justify-items: center;
  gap: 10px;
  border: 1px solid rgba(216, 189, 134, 0.24);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--surface-strong);
  text-align: center;
}

.qr-card img {
  width: min(220px, 100%);
  border-radius: 6px;
  background: white;
}

.qr-card strong {
  color: var(--gold-2);
  font-size: 22px;
}

.qr-card span {
  color: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 24px 0 32px;
  color: var(--muted);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  line-height: 1.7;
}

@media (max-width: 960px) {
  .site-header {
    width: min(var(--max), calc(100% - 28px));
  }

  .nav {
    display: none;
  }

  .hero,
  .expert-section,
  .method-inner,
  .contact-copy,
  .contact-actions,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 30px;
    padding-top: 34px;
  }

  .hero-visual {
    min-height: 560px;
  }

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

  .contact-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    font-size: 19px;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .section,
  .contact-section {
    width: calc(100% - 28px);
  }

  .hero {
    min-height: auto;
    padding-bottom: 28px;
  }

  .hero-copy::before {
    width: 64px;
    height: 6px;
    margin-bottom: 24px;
  }

  h1 {
    font-size: clamp(48px, 15vw, 78px);
  }

  .hero-lead {
    font-size: 16px;
    line-height: 1.75;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-visual {
    min-height: 260px;
    height: 260px;
    align-self: auto;
  }

  .hero-visual img {
    object-position: 50% 24%;
  }

  .service-band,
  .method-section {
    padding-bottom: 62px;
  }

  .service-band {
    padding-top: 34px;
  }

  .method-section {
    padding-top: 62px;
  }

  .section-heading {
    gap: 18px;
  }

  .service-grid,
  .method-list {
    grid-template-columns: 1fr;
  }

  .service-item {
    min-height: auto;
  }

  .expert-section,
  .contact-section {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  .expert-points div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-form,
  .qr-card,
  .contact-lines {
    padding: 18px;
  }

  .footer {
    flex-direction: column;
    width: calc(100% - 28px);
  }
}