:root {
  --ink: #211c18;
  --ink-soft: #514840;
  --paper: #f6f1e8;
  --paper-deep: #ece3d5;
  --line: rgba(54, 42, 33, 0.18);
  --accent: #b85632;
  --accent-deep: #8e3e26;
  --wood: #704a39;
  --sage: #667064;
  --white: #fffdf9;
  --max: 1240px;
  --header-height: 78px;
  --shadow: 0 24px 70px rgba(46, 31, 23, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid #d7805e;
  outline-offset: 4px;
}

[id] {
  scroll-margin-top: 96px;
}

::selection {
  color: var(--white);
  background: var(--accent);
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 34px;
  height: 1px;
  background: currentColor;
  content: "";
}

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

h1,
h2,
h3 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  font-weight: 700;
  line-height: 1.28;
  text-wrap: balance;
}

h1 {
  margin-bottom: 26px;
  font-size: clamp(44px, 5.4vw, 78px);
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(32px, 4vw, 54px);
  letter-spacing: -0.035em;
}

h3 {
  font-size: clamp(22px, 2vw, 30px);
}

.lead {
  max-width: 690px;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.5vw, 20px);
  text-wrap: pretty;
}

.muted {
  color: var(--ink-soft);
}

.topline {
  color: rgba(255, 255, 255, 0.82);
  background: var(--ink);
  font-size: 13px;
}

.topline-inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.topline p {
  margin: 0;
}

.topline a {
  color: #fff;
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(246, 241, 232, 0.94);
  backdrop-filter: blur(16px);
  transition: height 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  height: 68px;
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(37, 27, 21, 0.07);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.brand {
  min-width: 260px;
  display: inline-flex;
  align-items: center;
  gap: 13px;
}

.brand-symbol {
  position: relative;
  width: 45px;
  height: 45px;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid rgba(165, 117, 62, .2);
  background-color: #fff;
  background-image: url("../img/logo-header.jpg");
  background-repeat: no-repeat;
  background-position: 50% 20%;
  background-size: 240%;
}

.brand-symbol::before,
.brand-symbol::after {
  display: none;
}

.brand-symbol::before {
  inset: 10px 8px 12px;
  border: 2px solid currentColor;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

.brand-symbol::after {
  left: 8px;
  right: 8px;
  bottom: 9px;
  height: 3px;
  background: currentColor;
  box-shadow: 3px 4px 0 -1px currentColor, 21px 4px 0 -1px currentColor;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.brand-copy small {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.site-nav {
  height: 100%;
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 36px);
}

.site-nav a {
  position: relative;
  display: inline-flex;
  height: 100%;
  align-items: center;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 600;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 15px;
  left: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
  content: "";
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-phone {
  padding: 10px 16px;
  color: #fff !important;
  background: var(--ink);
}

.nav-phone::after {
  display: none;
}

@media (min-width: 1051px) {
  .site-nav a:last-child {
    height: auto;
    min-height: 42px;
    padding: 10px 16px;
    color: #fff;
    background: var(--ink);
    transition: color 180ms ease, background 180ms ease, transform 180ms ease;
  }

  .site-nav a:last-child::after {
    display: none;
  }

  .site-nav a:last-child:hover,
  .site-nav a:last-child[aria-current="page"] {
    color: #fff;
    background: var(--accent);
    transform: translateY(-1px);
  }
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 6px auto;
  background: currentColor;
  transition: transform 200ms ease, opacity 200ms ease;
}

.menu-open .menu-toggle span:first-child {
  transform: translateY(8px) rotate(45deg);
}

.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.menu-open .menu-toggle span:last-child {
  transform: translateY(-8px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: calc(100svh - 114px);
  overflow: hidden;
  background: #e9dfd1;
}

.hero::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, #f6f1e8 0%, rgba(246, 241, 232, 0.96) 32%, rgba(246, 241, 232, 0.5) 52%, rgba(246, 241, 232, 0) 72%);
  content: "";
}

.hero-visual {
  position: absolute;
  inset: 0 0 0 38%;
  background: url("../img/hero-placeholder.svg?v=20260721") center/cover no-repeat;
  transform: scale(1.02);
  animation: heroDepth 1.4s cubic-bezier(.2,.8,.2,1) both;
}

.hero-content {
  position: relative;
  z-index: 2;
  min-height: calc(100svh - 114px);
  display: flex;
  align-items: center;
  padding-block: 64px 80px;
}

.hero-copy {
  width: min(610px, 55%);
}

.hero-brandline {
  margin-bottom: 28px;
  color: var(--accent);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.hero h1 span {
  display: block;
  color: var(--accent);
}

.hero .lead {
  max-width: 525px;
  margin-bottom: 34px;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero-actions-spaced {
  margin-top: 34px;
}

.btn {
  min-height: 51px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--ink);
  font-size: 15px;
  font-weight: 800;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0) scale(.985);
}

.btn-primary {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

.btn-primary:hover {
  border-color: var(--accent-deep);
  background: var(--accent-deep);
}

.btn-ghost {
  background: rgba(246, 241, 232, 0.38);
}

.btn-light {
  color: var(--ink);
  border-color: var(--white);
  background: var(--white);
}

.hero-note {
  display: flex;
  gap: 30px;
  margin-top: 44px;
  color: var(--ink-soft);
  font-size: 13px;
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-note span::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.scroll-cue {
  position: absolute;
  right: 32px;
  bottom: 28px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 11px;
  letter-spacing: 0.16em;
  writing-mode: vertical-rl;
}

.scroll-cue::after {
  width: 1px;
  height: 58px;
  background: rgba(255,255,255,.75);
  content: "";
  animation: scrollLine 1.8s ease-in-out infinite;
}

.proof-band {
  position: relative;
  z-index: 3;
  color: #fff;
  background: var(--ink);
}

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

.proof-item {
  min-height: 146px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 9px;
  padding: 28px clamp(22px, 3vw, 44px);
  border-left: 1px solid rgba(255, 255, 255, .14);
}

.proof-item:last-child {
  border-right: 1px solid rgba(255, 255, 255, .14);
}

.proof-item strong {
  color: #e2a17e;
  font-family: Georgia, "Noto Serif SC", "Songti SC", STSong, serif;
  font-size: clamp(28px, 2.5vw, 40px);
  font-weight: 500;
  line-height: 1;
}

.proof-item sup {
  margin-left: 2px;
  font-size: .52em;
}

.proof-item span {
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
  letter-spacing: .04em;
}

.section {
  padding-block: clamp(80px, 10vw, 140px);
}

.section-heading {
  max-width: 790px;
  margin-bottom: clamp(48px, 6vw, 78px);
}

.section-heading.split {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: 80px;
}

.section-heading.split h2 {
  margin-bottom: 0;
}

.section-heading.split p:last-child {
  margin-bottom: 4px;
}

.service-list {
  border-top: 1px solid var(--line);
}

.service-row {
  position: relative;
  display: grid;
  grid-template-columns: 76px minmax(220px, 0.75fr) minmax(280px, 1fr) 48px;
  align-items: center;
  gap: 30px;
  min-height: 132px;
  border-bottom: 1px solid var(--line);
  padding-inline: 18px;
  transition: color 200ms ease, background 200ms ease;
}

.service-row:hover {
  background: rgba(255, 253, 249, 0.55);
}

.service-row::before {
  position: absolute;
  top: 22px;
  bottom: 22px;
  left: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 200ms ease;
  content: "";
}

.service-row:hover::before {
  transform: scaleY(1);
}

.service-row .number {
  color: var(--accent);
  font-family: Georgia, serif;
  font-size: 15px;
}

.service-row h3 {
  margin: 0;
}

.service-row p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.arrow-link {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 20px;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.service-row:hover .arrow-link,
.case-item:hover .arrow-link {
  color: #fff;
  background: var(--accent);
  transform: translateX(4px);
}

.section-dark {
  color: var(--white);
  background: var(--ink);
}

.section-dark .eyebrow {
  color: #d7805e;
}

.section-dark .muted,
.section-dark .lead {
  color: rgba(255, 255, 255, 0.68);
}

.why-layout {
  display: grid;
  grid-template-columns: minmax(300px, .78fr) minmax(0, 1.22fr);
  gap: clamp(60px, 9vw, 140px);
}

.why-intro {
  position: sticky;
  top: 130px;
  align-self: start;
}

.reason-list {
  border-top: 1px solid rgba(255,255,255,.2);
}

.reason-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 24px;
  padding-block: 34px;
  border-bottom: 1px solid rgba(255,255,255,.2);
}

.reason-item strong {
  color: #d7805e;
  font-family: Georgia, serif;
  font-size: 20px;
}

.reason-item h3 {
  margin: 0 0 10px;
  font-size: 25px;
}

.reason-item p {
  max-width: 580px;
  margin: 0;
  color: rgba(255,255,255,.64);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 44px 28px;
}

.case-item {
  grid-column: span 6;
}

.case-item:nth-child(3n) {
  grid-column: 3 / span 8;
}

.case-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.43;
  background: var(--paper-deep);
}

.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(.2,.8,.2,1);
}

.case-item:hover .case-media img {
  transform: scale(1.035);
}

.case-caption {
  display: grid;
  grid-template-columns: 1fr 48px;
  align-items: center;
  gap: 24px;
  padding-top: 22px;
}

.case-caption h3 {
  margin-bottom: 7px;
}

.case-caption p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.placeholder-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 7px 10px;
  color: #fff;
  background: rgba(32, 27, 23, .72);
  font-size: 11px;
  letter-spacing: .08em;
}

.process {
  background: var(--paper-deep);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.process-item {
  min-height: 250px;
  padding: 32px;
  border-right: 1px solid var(--line);
}

.process-item:last-child {
  border-right: 0;
}

.process-item .number {
  display: block;
  margin-bottom: 52px;
  color: var(--accent);
  font-family: Georgia, serif;
  font-size: 14px;
}

.process-item h3 {
  margin-bottom: 13px;
  font-size: 24px;
}

.process-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.cta-section {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--accent);
}

.cta-section::after {
  position: absolute;
  top: -55%;
  right: -8%;
  width: 520px;
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(255,255,255,.04), 0 0 0 160px rgba(255,255,255,.025);
  content: "";
}

.cta-inner {
  position: relative;
  z-index: 1;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding-block: 70px;
}

.cta-copy {
  max-width: 740px;
}

.cta-copy h2 {
  margin-bottom: 15px;
}

.cta-copy p {
  margin: 0;
  color: rgba(255,255,255,.78);
}

.cta-contact {
  min-width: 260px;
  text-align: right;
}

.cta-contact small {
  display: block;
  margin-bottom: 5px;
  color: rgba(255,255,255,.68);
}

.cta-contact > a {
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 700;
}

.cta-contact .cta-actions {
  justify-content: flex-end;
  margin-top: 20px;
}

.cta-contact .btn {
  font-family: inherit;
  font-size: 15px;
}

.inner-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(78px, 9vw, 126px);
  background: var(--paper-deep);
}

.inner-hero::after {
  position: absolute;
  top: -280px;
  right: -130px;
  width: 620px;
  height: 620px;
  border: 1px solid rgba(184, 86, 50, .22);
  border-radius: 50%;
  box-shadow: 0 0 0 85px rgba(184, 86, 50, .045), 0 0 0 170px rgba(184, 86, 50, .025);
  content: "";
}

.inner-hero .container {
  position: relative;
  z-index: 1;
}

.inner-hero h1 {
  max-width: 920px;
  margin-bottom: 20px;
}

.inner-hero .lead {
  margin-bottom: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  color: var(--ink-soft);
  font-size: 13px;
}

.breadcrumb span {
  opacity: .55;
}

.service-catalog {
  border-top: 1px solid var(--line);
}

.catalog-item {
  display: grid;
  grid-template-columns: 90px minmax(230px, .72fr) minmax(280px, 1fr) 165px;
  align-items: center;
  gap: 34px;
  min-height: 160px;
  border-bottom: 1px solid var(--line);
}

.catalog-item .number {
  color: var(--accent);
  font-family: Georgia, serif;
  font-size: 16px;
}

.catalog-item h2 {
  margin: 0;
  font-size: clamp(24px, 2.6vw, 36px);
}

.catalog-item p {
  margin: 0;
  color: var(--ink-soft);
}

.catalog-item .btn {
  min-height: 45px;
  padding: 10px 15px;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: clamp(60px, 8vw, 110px);
}

.detail-content h2 {
  margin-top: 70px;
  font-size: clamp(28px, 3vw, 42px);
}

.detail-content h2:first-child {
  margin-top: 0;
}

.detail-content p,
.detail-content li {
  color: var(--ink-soft);
}

.detail-content ul {
  margin: 24px 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.detail-content li {
  position: relative;
  padding: 18px 0 18px 28px;
  border-bottom: 1px solid var(--line);
}

.detail-content li::before {
  position: absolute;
  top: 28px;
  left: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.detail-aside {
  position: sticky;
  top: 100px;
  height: max-content;
  padding: 30px;
  color: #fff;
  background: var(--ink);
}

.detail-aside h3 {
  margin-bottom: 12px;
  font-size: 25px;
}

.detail-aside p {
  color: rgba(255,255,255,.65);
  font-size: 14px;
}

.quick-facts {
  margin: 26px 0 8px;
  border-top: 1px solid rgba(255,255,255,.18);
}

.quick-facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-block: 13px;
  border-bottom: 1px solid rgba(255,255,255,.18);
}

.quick-facts dt {
  color: rgba(255,255,255,.56);
  font-size: 13px;
}

.quick-facts dd {
  margin: 0;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

.detail-aside .phone-large {
  display: block;
  margin: 24px 0;
  color: #fff;
  font-family: Georgia, serif;
  font-size: 24px;
  font-weight: 700;
}

.material-note {
  margin: 30px 0;
  padding: 22px 24px;
  border-left: 3px solid var(--accent);
  background: var(--paper-deep);
}

.compare {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.55;
  margin-top: 34px;
  background: #c5b39e;
  user-select: none;
}

.compare:focus-within {
  outline: 3px solid #d7805e;
  outline-offset: 4px;
}

.compare img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.compare-after {
  position: absolute;
  inset: 0;
  width: 50%;
  overflow: hidden;
  border-right: 2px solid #fff;
}

.compare-after img {
  width: auto;
  max-width: none;
  height: 100%;
}

.compare-after-image {
  filter: saturate(1.35) brightness(1.08);
}

.compare-label {
  position: absolute;
  top: 18px;
  z-index: 3;
  padding: 7px 11px;
  color: #fff;
  background: rgba(32,27,23,.68);
  font-size: 12px;
}

.compare-label.before {
  right: 18px;
}

.compare-label.after {
  left: 18px;
}

.compare input {
  position: absolute;
  inset: 0;
  z-index: 4;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}

.compare-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: #fff;
  box-shadow: var(--shadow);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, .72fr);
  gap: clamp(60px, 9vw, 130px);
}

.about-copy h2,
.contact-copy h2 {
  max-width: 650px;
}

.about-copy p,
.contact-copy p {
  color: var(--ink-soft);
}

.about-visual {
  position: relative;
  min-height: 600px;
  background: url("../img/hero-placeholder.svg") center/cover no-repeat;
}

.about-visual.logo-panel {
  border: 1px solid var(--line);
  background-color: #fff;
  background-image: url("../img/logo.png");
  background-position: center;
  background-size: contain;
  box-shadow: 0 28px 70px rgba(47, 34, 24, .08);
}

.about-visual.logo-panel::after {
  display: none;
}

.about-visual::after {
  position: absolute;
  right: -28px;
  bottom: -28px;
  width: 70%;
  height: 44%;
  border: 1px solid var(--accent);
  content: "";
}

.fact-list {
  margin-top: 45px;
  border-top: 1px solid var(--line);
}

.fact-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding-block: 19px;
  border-bottom: 1px solid var(--line);
}

.fact-item strong {
  color: var(--accent);
}

.fact-item span {
  color: var(--ink-soft);
}

.contact-list {
  margin-top: 46px;
  border-top: 1px solid var(--line);
}

.contact-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding-block: 21px;
  border-bottom: 1px solid var(--line);
}

.contact-item strong {
  font-size: 14px;
}

.contact-item a,
.contact-item span {
  color: var(--ink-soft);
}

.contact-item a:hover {
  color: var(--accent);
}

.qr-panel {
  padding: 38px;
  color: #fff;
  background: var(--ink);
}

.qr-panel h3 {
  margin-bottom: 8px;
}

.qr-panel > p {
  color: rgba(255,255,255,.62);
}

.qr-code-crop {
  position: relative;
  width: min(100%, 300px);
  aspect-ratio: 1;
  overflow: hidden;
  margin: 30px auto 26px;
  border: 12px solid #fff;
  background: #fff;
  box-shadow: 0 22px 52px rgba(0, 0, 0, .22);
}

.qr-code-crop .qr-image {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 140%;
  max-width: none;
  transform: translate(-50%, -53.5%);
}

.qr-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .18);
  color: rgba(255,255,255,.62);
  font-size: 13px;
}

.qr-meta a {
  color: #fff;
  font-family: Georgia, serif;
  font-size: 16px;
  font-weight: 700;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 25px 52px 25px 0;
  cursor: pointer;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  font-size: 21px;
  font-weight: 700;
  list-style: none;
  transition: color 180ms ease;
}

.faq-list details[open] summary {
  color: var(--accent);
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 24px;
  right: 8px;
  color: var(--accent);
  font-family: sans-serif;
  font-size: 26px;
  font-weight: 400;
  content: "+";
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  max-width: 780px;
  padding: 0 0 25px;
  color: var(--ink-soft);
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px 30px;
}

.material-item:nth-child(3n) {
  grid-column: 1 / -1;
  width: calc(66.666% - 10px);
  margin-inline: auto;
}

.material-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.55;
  background: var(--paper-deep);
}

.material-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(.2,.8,.2,1);
}

.material-item:hover .material-media img {
  transform: scale(1.035);
}

.material-copy {
  padding-top: 22px;
}

.material-copy h2 {
  margin-bottom: 10px;
  font-size: clamp(25px, 2.8vw, 36px);
}

.material-copy p {
  max-width: 540px;
  margin: 0;
  color: var(--ink-soft);
}

.material-disclaimer {
  margin-top: 65px;
  padding: 25px 28px;
  border-left: 3px solid var(--accent);
  background: var(--paper-deep);
}

.support-list {
  border-top: 1px solid var(--line);
}

.support-item {
  display: grid;
  grid-template-columns: 70px minmax(220px, .55fr) 1fr;
  gap: 30px;
  padding-block: 34px;
  border-bottom: 1px solid var(--line);
}

.support-item .number {
  color: var(--accent);
  font-family: Georgia, serif;
}

.support-item h2 {
  margin: 0;
  font-size: clamp(24px, 2.7vw, 35px);
}

.support-item p {
  margin: 0;
  color: var(--ink-soft);
}

.site-footer {
  color: rgba(255,255,255,.68);
  background: #171411;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(300px, 1.25fr) repeat(2, minmax(150px, .45fr)) minmax(240px, .7fr);
  gap: 55px;
  padding-block: 72px 52px;
}

.footer-brand .brand {
  color: #fff;
}

.footer-brand .brand-copy small {
  color: rgba(255,255,255,.48);
}

.footer-brand p {
  max-width: 390px;
  margin: 24px 0 0;
  font-size: 14px;
}

.footer-col h3 {
  margin-bottom: 22px;
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  letter-spacing: .08em;
}

.footer-col a,
.footer-col span {
  display: block;
  margin: 10px 0;
  font-size: 14px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-phone {
  color: #fff !important;
  font-family: Georgia, serif;
  font-size: 23px !important;
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-block: 22px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 12px;
}

.footer-bottom p {
  margin: 0;
}

.icp-link {
  color: inherit;
  text-underline-offset: 3px;
  transition: color 180ms ease;
}

.icp-link:hover,
.icp-link:focus-visible {
  color: #fff;
  text-decoration: underline;
}

.mobile-dock {
  display: none;
}

.contact-rail {
  position: fixed;
  top: 52%;
  right: 22px;
  z-index: 840;
  display: grid;
  overflow: visible;
  border: 1px solid rgba(35, 27, 22, .12);
  border-radius: 3px;
  background: rgba(255, 253, 249, .94);
  box-shadow: 0 18px 46px rgba(35, 27, 22, .14);
  opacity: 0;
  pointer-events: none;
  transform: translate(16px, -50%);
  backdrop-filter: blur(14px);
  transition: opacity 220ms ease, transform 220ms ease;
}

.contact-rail.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translate(0, -50%);
}

.contact-rail a,
.contact-rail button {
  position: relative;
  width: 68px;
  height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 4px 6px;
  border: 0;
  border-bottom: 1px solid rgba(35, 27, 22, .1);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease;
}

.contact-rail button:last-child {
  border-bottom: 0;
}

.contact-rail a:hover,
.contact-rail button:hover {
  color: #fff;
  background: var(--accent);
}

.contact-rail svg {
  width: 25px;
  height: 25px;
}

.contact-rail .rail-label {
  color: currentColor;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .08em;
  white-space: nowrap;
}

.wechat-eyes {
  fill: var(--white);
}

.contact-rail a:hover .wechat-eyes {
  fill: var(--accent);
}

@media (max-width: 1439px) {
  .contact-rail {
    display: none;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 650ms cubic-bezier(.2,.8,.2,1), transform 650ms cubic-bezier(.2,.8,.2,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 90ms;
}

.reveal-delay-2 {
  transition-delay: 170ms;
}

/* 首屏信息必须立即可读；动效只保留轻微位移，避免脚本或弱网下出现空白首屏。 */
.hero .reveal {
  opacity: 1;
  transform: none;
  animation: heroCopyIn 520ms cubic-bezier(.2,.8,.2,1) both;
}

.hero .reveal-delay-1 {
  animation-delay: 70ms;
}

.hero .reveal-delay-2 {
  animation-delay: 130ms;
}

@keyframes heroCopyIn {
  from { transform: translateY(14px); }
  to { transform: translateY(0); }
}

@keyframes heroDepth {
  from { opacity: .35; transform: scale(1.085); }
  to { opacity: 1; transform: scale(1.02); }
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(.3); transform-origin: top; opacity: .5; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1050px) {
  .topline {
    display: none;
  }

  .site-header {
    height: 70px;
  }

  .site-header.is-scrolled {
    height: 64px;
  }

  .brand {
    min-width: 0;
  }

  .menu-toggle {
    display: block;
    position: relative;
    z-index: 2;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 100px 11vw;
    color: #fff;
    background: var(--ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 220ms ease, visibility 220ms ease, transform 220ms ease;
  }

  .menu-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .menu-open .menu-toggle {
    color: #fff;
  }

  .site-nav a {
    width: 100%;
    height: auto;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,.13);
    color: rgba(255,255,255,.78);
    font-family: "Noto Serif SC", "Songti SC", STSong, serif;
    font-size: 28px;
  }

  .site-nav a:hover,
  .site-nav a[aria-current="page"] {
    color: #fff;
  }

  .site-nav a::after {
    display: none;
  }

  .nav-phone,
  .site-nav a:last-child {
    margin-top: 25px;
    padding: 12px 18px !important;
    border: 1px solid rgba(255,255,255,.35) !important;
    color: #fff !important;
    background: transparent;
    font-family: inherit !important;
    font-size: 16px !important;
  }

  .contact-rail {
    display: none;
  }

  .hero,
  .hero-content {
    min-height: calc(100svh - 70px);
  }

  .hero-copy {
    width: 62%;
  }

  .service-row {
    grid-template-columns: 55px minmax(200px, .7fr) minmax(240px, 1fr) 44px;
    gap: 22px;
  }

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

  .process-item:nth-child(2) {
    border-right: 0;
  }

  .process-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .catalog-item {
    grid-template-columns: 65px minmax(220px, .8fr) 1fr 130px;
    gap: 22px;
  }

  .footer-main {
    grid-template-columns: 1.4fr repeat(2, .6fr);
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 780px) {
  body {
    padding-bottom: calc(66px + env(safe-area-inset-bottom));
  }

  .container {
    width: min(calc(100% - 34px), var(--max));
  }

  h1 {
    font-size: clamp(39px, 12vw, 56px);
  }

  h2 {
    font-size: clamp(30px, 9vw, 42px);
  }

  .brand-symbol {
    width: 40px;
    height: 40px;
  }

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

  .brand-copy small {
    display: none;
  }

  .hero {
    min-height: 780px;
    background: var(--paper);
  }

  .hero::after {
    background: linear-gradient(180deg, var(--paper) 0%, var(--paper) 47%, rgba(246,241,232,.78) 59%, rgba(246,241,232,0) 76%);
  }

  .hero-visual {
    inset: auto 0 0;
    height: 46%;
    background-position: 58% center;
  }

  .hero-content {
    min-height: 780px;
    align-items: flex-start;
    padding-top: 64px;
  }

  .hero-copy {
    width: 100%;
  }

  .hero-brandline {
    margin-bottom: 18px;
    font-size: 12px;
  }

  .hero h1 {
    max-width: 520px;
    margin-bottom: 17px;
  }

  .hero .lead {
    max-width: 500px;
    margin-bottom: 25px;
    font-size: 16px;
  }

  .hero-note {
    display: none;
  }

  .scroll-cue {
    display: none;
  }

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

  .proof-item {
    min-height: 122px;
    padding: 24px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .14);
  }

  .proof-item:nth-child(2n) {
    border-right: 1px solid rgba(255, 255, 255, .14);
  }

  .proof-item:nth-last-child(-n+2) {
    border-bottom: 0;
  }

  .section-heading.split {
    display: block;
  }

  .section-heading.split h2 {
    margin-bottom: 22px;
  }

  .service-row {
    grid-template-columns: 42px 1fr 38px;
    gap: 12px;
    min-height: 105px;
    padding-inline: 0;
  }

  .service-row p {
    display: none;
  }

  .service-row h3 {
    font-size: 22px;
  }

  .service-row:hover {
    padding-inline: 0;
  }

  .arrow-link {
    width: 36px;
    height: 36px;
  }

  .why-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .why-intro {
    position: static;
  }

  .case-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .case-item,
  .case-item:nth-child(3n) {
    grid-column: auto;
  }

  .case-caption h3 {
    font-size: 22px;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .process-item {
    min-height: 0;
    padding: 28px 8px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .process-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .process-item:last-child {
    border-bottom: 0;
  }

  .process-item .number {
    margin-bottom: 24px;
  }

  .cta-inner {
    min-height: 440px;
    display: block;
  }

  .cta-contact {
    margin-top: 40px;
    text-align: left;
  }

  .cta-contact .cta-actions {
    justify-content: flex-start;
  }

  .inner-hero {
    padding-block: 70px;
  }

  .catalog-item {
    grid-template-columns: 42px 1fr;
    gap: 11px 15px;
    padding-block: 28px;
  }

  .catalog-item .number {
    grid-row: 1 / span 2;
    align-self: start;
    padding-top: 8px;
  }

  .catalog-item h2 {
    font-size: 25px;
  }

  .catalog-item p {
    grid-column: 2;
    font-size: 14px;
  }

  .catalog-item .btn {
    grid-column: 2;
    width: max-content;
    margin-top: 8px;
  }

  .detail-layout,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .detail-aside {
    position: static;
  }

  .about-visual {
    min-height: 420px;
  }

  .about-visual::after {
    right: -10px;
    bottom: -14px;
  }

  .fact-item,
  .contact-item {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .qr-panel {
    padding: 28px 20px;
  }

  .qr-code-crop {
    width: min(100%, 270px);
  }

  .material-grid {
    grid-template-columns: 1fr;
  }

  .material-item:nth-child(3n) {
    grid-column: auto;
    width: auto;
  }

  .support-item {
    grid-template-columns: 42px 1fr;
    gap: 10px 15px;
  }

  .support-item .number {
    grid-row: 1 / span 2;
  }

  .support-item p {
    grid-column: 2;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 45px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    display: block;
  }

  .footer-bottom p + p {
    margin-top: 8px;
  }

  .mobile-dock {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 900;
    height: calc(66px + env(safe-area-inset-bottom));
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid rgba(35, 27, 22, .13);
    background: rgba(255,253,249,.96);
    backdrop-filter: blur(14px);
  }

  .mobile-dock a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    font-size: 15px;
    font-weight: 800;
    touch-action: manipulation;
  }

  .mobile-dock a:first-child {
    color: #fff;
    background: var(--accent);
  }

  .mobile-dock a:active {
    filter: brightness(.92);
  }

  .mobile-dock svg {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 420px) {
  .brand-copy strong {
    font-size: 15px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero {
    min-height: 810px;
  }

  .hero-content {
    min-height: 810px;
  }

  .reason-item {
    grid-template-columns: 40px 1fr;
    gap: 14px;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-brand,
  .footer-col:last-child {
    grid-column: auto;
  }
}