/* =====================================================
   Yanbaolong · Russian Website Building
   Author: Янь Баолун (闫宝龙)
   ===================================================== */

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

:root {
  --color-navy: #0e1e3f;
  --color-navy-2: #142852;
  --color-navy-3: #1f3a78;
  --color-gold: #c9a876;
  --color-gold-2: #a98244;
  --color-cream: #f6f2ea;
  --color-cream-2: #efe9dc;
  --color-ink: #1a1a1a;
  --color-muted: #6b7280;
  --color-line: rgba(14, 30, 63, 0.1);
  --color-line-dark: rgba(246, 242, 234, 0.1);
  --color-white: #ffffff;
  --color-bg: #fbfaf7;

  --font-display: "Noto Serif SC", "Cormorant Garamond", "Songti SC", "SimSun", Georgia, serif;
    --font-body: "Noto Sans SC", "Manrope", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(14, 30, 63, 0.06);
  --shadow: 0 12px 40px rgba(14, 30, 63, 0.08);
  --shadow-lg: 0 24px 80px rgba(14, 30, 63, 0.12);

  --maxw: 1280px;
  --header-h: 76px;
  --topbar-h: 36px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold-2);
  margin-bottom: 20px;
  position: relative;
  padding-left: 36px;
}

.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--color-gold);
  transform: translateY(-50%);
}

/* ---------- Topbar ---------- */
.topbar {
  background: var(--color-navy);
  color: rgba(246, 242, 234, 0.85);
  font-size: 12.5px;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 60;
}

.topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.topbar__chip {
  background: var(--color-gold);
  color: var(--color-navy);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.topbar__divider {
  width: 1px;
  height: 12px;
  background: rgba(246, 242, 234, 0.25);
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar__link:hover {
  color: var(--color-gold);
}

.topbar__dot {
  width: 3px;
  height: 3px;
  background: rgba(246, 242, 234, 0.4);
  border-radius: 50%;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all 0.4s var(--ease);
}

.header.is-stuck {
  background: rgba(251, 250, 247, 0.95);
  border-bottom-color: var(--color-line);
}

.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

.logo__mark {
  font-size: 22px;
  color: var(--color-navy);
  font-family: var(--font-display);
  position: relative;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.logo__r {
  color: var(--color-gold-2);
  font-size: 11px;
  font-weight: 600;
  margin-left: 1px;
  font-family: var(--font-body);
  vertical-align: super;
  line-height: 1;
}

.logo__sep {
  color: var(--color-gold);
  font-weight: 300;
  font-size: 20px;
}

.logo__text {
  font-size: 14px;
  color: var(--color-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
}

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

.nav__link {
  display: inline-block;
  padding: 10px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  transition: all 0.25s var(--ease);
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

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

.nav__link:hover::after {
  transform: scaleX(1);
}

.nav__link--cta {
  background: var(--color-navy);
  color: var(--color-cream) !important;
  padding: 10px 22px;
  margin-left: 8px;
  border-radius: 999px;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-gold-2);
  color: var(--color-white) !important;
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.burger span {
  width: 22px;
  height: 2px;
  background: var(--color-navy);
  transition: all 0.3s var(--ease);
}

.burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.is-open span:nth-child(2) {
  opacity: 0;
}

.burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.3s var(--ease);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn svg {
  transition: transform 0.3s var(--ease);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--color-navy);
  color: var(--color-cream);
}

.btn--primary:hover {
  background: var(--color-gold-2);
  color: var(--color-white);
  box-shadow: 0 12px 32px rgba(201, 168, 118, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--color-navy);
  border: 1px solid var(--color-line);
}

.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-2);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-navy);
}

.btn--white:hover {
  background: var(--color-cream);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 80px 0 60px;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    var(--color-bg) 0%,
    var(--color-cream) 100%
  );
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 18s ease-in-out infinite;
}

.hero__orb--1 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--color-gold) 0%, transparent 70%);
  top: -120px;
  right: -120px;
}

.hero__orb--2 {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, var(--color-navy-3) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation-delay: -6s;
}

.hero__orb--3 {
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, #b6c2e2 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.3;
  animation-delay: -12s;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(14, 30, 63, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 30, 63, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(
    ellipse at center,
    black 30%,
    transparent 80%
  );
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0);
  }
  33% {
    transform: translate(30px, -40px);
  }
  66% {
    transform: translate(-20px, 30px);
  }
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
  min-height: 600px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(201, 168, 118, 0.12);
  border: 1px solid rgba(201, 168, 118, 0.3);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--color-gold-2);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s var(--ease) 0.1s backwards;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(201, 168, 118, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(201, 168, 118, 0.2);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(201, 168, 118, 0.05);
  }
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(32px, 4.4vw, 56px);
    line-height: 1.35;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 28px;
    letter-spacing: 0.01em;
    animation: fadeInUp 0.8s var(--ease) 0.2s backwards;
}

.hero__title-cn {
    color: var(--color-gold-2);
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding: 0 4px;
}

.hero__title-cn::after {
    content: "";
    position: absolute;
    left: 4px;
    right: 4px;
    bottom: 4px;
    height: 8px;
    background: rgba(201, 168, 118, 0.25);
    z-index: -1;
    border-radius: 2px;
}

.hero__title-accent {
    color: var(--color-gold-2);
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding: 0 4px;
}

.hero__title-accent::after {
    content: "";
    position: absolute;
    left: 4px;
    right: 4px;
    bottom: 4px;
    height: 8px;
    background: rgba(201, 168, 118, 0.25);
    z-index: -1;
    border-radius: 2px;
}

.hero__subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 40px;
  max-width: 560px;
  animation: fadeInUp 0.8s var(--ease) 0.3s backwards;
}

.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s var(--ease) 0.4s backwards;
}

.hero__stats {
  display: flex;
  gap: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-line);
  animation: fadeInUp 0.8s var(--ease) 0.5s backwards;
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 500;
  color: var(--color-navy);
  line-height: 1;
}

.hero__stat-num small {
  color: var(--color-gold-2);
  font-size: 24px;
  font-weight: 500;
}

.hero__stat-label {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
  letter-spacing: 0.04em;
}

/* Hero visual cards */
.hero__visual {
  position: relative;
  height: 480px;
  animation: fadeInUp 1s var(--ease) 0.4s backwards;
}

.hero__card {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero__card--main {
  top: 0;
  left: 0;
  right: 80px;
  bottom: 60px;
  border: 1px solid var(--color-line);
}

.hero__card-bar {
  height: 32px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 6px;
}

.hero__card-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d4d4d4;
}

.hero__card-bar span:nth-child(1) {
  background: #ff5f57;
}
.hero__card-bar span:nth-child(2) {
  background: #ffbd2e;
}
.hero__card-bar span:nth-child(3) {
  background: #28c840;
}

.hero__card-bar em {
  margin-left: 12px;
  font-style: normal;
  font-size: 11.5px;
  color: var(--color-muted);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.hero__card-body {
  padding: 24px;
}

.hero__card-line {
  height: 10px;
  background: var(--color-cream-2);
  border-radius: 3px;
  margin-bottom: 12px;
}

.w-80 {
  width: 80%;
}
.w-60 {
  width: 60%;
  margin-left: 0;
}
.w-90 {
  width: 90%;
}
.w-40 {
  width: 40%;
}

.hero__card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.hero__card-grid > div {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-cream-2), var(--color-cream));
  border-radius: 8px;
  border: 1px solid var(--color-line);
}

.hero__card-grid > div:nth-child(odd) {
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-3));
  border-color: transparent;
}

.hero__card--float {
  padding: 16px 18px;
  border: 1px solid var(--color-line);
  min-width: 180px;
  animation: floatCard 6s ease-in-out infinite;
}

.hero__card--a {
  top: 30%;
  right: 0;
  animation-delay: -2s;
}

.hero__card--b {
  bottom: 0;
  right: 30%;
  animation-delay: -4s;
}

@keyframes floatCard {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.hero__mini-title {
  font-size: 11px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.hero__mini-bar {
  height: 6px;
  background: var(--color-cream-2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.hero__mini-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-gold-2), var(--color-gold));
  border-radius: 3px;
}

.hero__mini-num {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-navy);
}

.hero__mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 50px;
}

.hero__mini-chart span {
  flex: 1;
  background: linear-gradient(180deg, var(--color-navy-3), var(--color-navy));
  border-radius: 2px 2px 0 0;
  height: var(--h);
  animation: grow 2s var(--ease) backwards;
}

.hero__mini-chart span:nth-child(1) {
  animation-delay: 0.1s;
}
.hero__mini-chart span:nth-child(2) {
  animation-delay: 0.2s;
}
.hero__mini-chart span:nth-child(3) {
  animation-delay: 0.3s;
}
.hero__mini-chart span:nth-child(4) {
  animation-delay: 0.4s;
}
.hero__mini-chart span:nth-child(5) {
  animation-delay: 0.5s;
}
.hero__mini-chart span:nth-child(6) {
  animation-delay: 0.6s;
}

@keyframes grow {
  from {
    height: 0;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero marquee */
.hero__marquee {
  margin-top: 80px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--color-white);
}

.hero__marquee-track {
  display: flex;
  gap: 36px;
  white-space: nowrap;
  animation: marquee 40s linear infinite;
  align-items: center;
}

.hero__marquee-track span {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-navy);
  letter-spacing: 0.04em;
}

.hero__marquee-track span:nth-child(even) {
  color: var(--color-gold);
  font-size: 18px;
  font-weight: 300;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- Section base ---------- */
.section {
  padding: 100px 0;
  position: relative;
}

.section--alt {
  background: var(--color-cream);
}

.section__head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.15;
  font-weight: 500;
  color: var(--color-navy);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.section__lead {
  font-size: 16.5px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- Services ---------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service {
  padding: 36px 32px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}

.service::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.service:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.service:hover::before {
  transform: scaleX(1);
}

.service__icon {
  width: 56px;
  height: 56px;
  background: var(--color-cream);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  margin-bottom: 24px;
  transition: all 0.3s var(--ease);
}

.service:hover .service__icon {
  background: var(--color-navy);
  color: var(--color-gold);
}

.service__title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service__desc {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.service__list {
  border-top: 1px solid var(--color-line);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service__list li {
  font-size: 13px;
  color: var(--color-navy);
  padding-left: 20px;
  position: relative;
  font-weight: 500;
}

.service__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-weight: 600;
}

/* ---------- Advantages ---------- */
.advantage__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.advantage {
  padding: 40px 32px;
  background: var(--color-white);
  transition: all 0.3s var(--ease);
}

.advantage:hover {
  background: var(--color-navy);
  color: var(--color-cream);
}

.advantage:hover .advantage__num {
  color: var(--color-gold);
}

.advantage:hover h3 {
  color: var(--color-cream);
}

.advantage__num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  color: var(--color-gold-2);
  line-height: 1;
  margin-bottom: 24px;
  transition: color 0.3s var(--ease);
}

.advantage h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  transition: color 0.3s var(--ease);
}

.advantage p {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--color-muted);
  transition: color 0.3s var(--ease);
}

.advantage:hover p {
  color: rgba(246, 242, 234, 0.85);
}

/* ---------- Process ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}

.process__step {
  padding: 32px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease);
  position: relative;
}

.process__step:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
}

.process__num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 500;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.process__step h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.process__step p {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ---------- Solutions ---------- */
.solutions__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution {
  padding: 32px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease);
  display: block;
}

.solution:hover {
  transform: translateY(-4px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow);
}

.solution__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold-2);
  margin-bottom: 16px;
  padding: 4px 10px;
  background: rgba(201, 168, 118, 0.12);
  border-radius: 4px;
}

.solution h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.solution p {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ---------- Cases ---------- */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s var(--ease);
}

.case:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.case__cover {
  height: 180px;
  position: relative;
  overflow: hidden;
}

.case__cover-grid {
  position: absolute;
  inset: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 8px;
  opacity: 0.3;
}

.case__cover-grid > span {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

.case__cover-grid > span:nth-child(odd) {
  background: rgba(255, 255, 255, 0.4);
}

.case__cover-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-navy);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.case__body {
  padding: 28px;
}

.case__body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.case__body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.case__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
}

.case__metrics li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case__metrics strong {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-gold-2);
  line-height: 1;
}

.case__metrics span {
  font-size: 11.5px;
  color: var(--color-muted);
  letter-spacing: 0.04em;
}

/* ---------- About ---------- */
.about__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__photo {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-cream-2);
  box-shadow: var(--shadow-lg);
  z-index: 2;
}

.about__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.about__visual:hover .about__photo img {
  transform: scale(1.04);
}

.about__photo-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--color-navy);
  color: var(--color-gold);
  padding: 14px 22px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.about__deco {
  position: absolute;
  top: -30px;
  right: -30px;
  width: 240px;
  height: 240px;
  border: 2px solid var(--color-gold);
  border-radius: var(--radius-lg);
  z-index: 1;
}

.about__content .section__title {
  text-align: left;
  margin-bottom: 24px;
}

.about__lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-ink);
  margin-bottom: 32px;
  font-weight: 500;
}

.about__credentials {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
  padding: 24px;
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
}

.about__cred {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.about__cred strong {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--color-navy);
  font-weight: 600;
  line-height: 1;
}

.about__cred span {
  font-size: 13px;
  color: var(--color-muted);
}

.about__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 32px;
}

/* ---------- FAQ ---------- */
.faq {
  max-width: 880px;
  margin: 0 auto;
}

.faq__item {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s var(--ease);
}

.faq__item[open] {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-sm);
}

.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--color-navy);
  transition: color 0.3s var(--ease);
}

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

.faq__item summary:hover {
  color: var(--color-gold-2);
}

.faq__icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-line);
  border-radius: 50%;
  position: relative;
  transition: all 0.3s var(--ease);
}

.faq__icon::before,
.faq__icon::after {
  content: "";
  position: absolute;
  background: var(--color-navy);
  transition: all 0.3s var(--ease);
}

.faq__icon::before {
  width: 12px;
  height: 1.5px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq__icon::after {
  width: 1.5px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq__item[open] .faq__icon {
  background: var(--color-gold);
  border-color: var(--color-gold);
}

.faq__item[open] .faq__icon::before,
.faq__item[open] .faq__icon::after {
  background: var(--color-white);
}

.faq__item[open] .faq__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq__body {
  padding: 0 28px 24px;
  color: var(--color-muted);
  line-height: 1.75;
  font-size: 15px;
  animation: fadeInUp 0.4s var(--ease);
}

/* ---------- CTA ---------- */
.cta {
  background: var(--color-navy);
  color: var(--color-cream);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(201, 168, 118, 0.2) 0%,
    transparent 70%
  );
  border-radius: 50%;
}

.cta__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  position: relative;
}

.cta h2 {
    font-family: var(--font-display);
    font-size: clamp(24px, 3.2vw, 36px);
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.cta p {
  font-size: 16px;
  color: rgba(246, 242, 234, 0.7);
}

/* ---------- Contact ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease);
}

a.contact__item:hover {
  border-color: var(--color-gold);
  transform: translateX(4px);
}

.contact__icon {
  width: 48px;
  height: 48px;
  background: var(--color-cream);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  flex-shrink: 0;
  transition: all 0.3s var(--ease);
}

a.contact__item:hover .contact__icon {
  background: var(--color-navy);
  color: var(--color-gold);
}

.contact__label {
  display: block;
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.contact__value {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-navy);
}

.contact__qr {
  text-align: center;
}

.contact__qr-frame {
  width: 260px;
  height: 260px;
  margin: 0 auto 20px;
  padding: 16px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all 0.4s var(--ease);
}

.contact__qr-frame:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.contact__qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact__qr-text {
  font-size: 13.5px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---------- More services ---------- */
.more__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.more__link {
  padding: 16px 18px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-navy);
  transition: all 0.3s var(--ease);
  display: flex;
  align-items: center;
  gap: 8px;
  text-align: left;
}

.more__link::before {
  content: "→";
  color: var(--color-gold);
  font-weight: 600;
  transition: transform 0.3s var(--ease);
}

.more__link:hover {
  border-color: var(--color-gold);
  background: var(--color-navy);
  color: var(--color-cream);
}

.more__link:hover::before {
  transform: translateX(4px);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-navy);
  color: var(--color-cream);
  padding-top: 80px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--color-line-dark);
}

.footer__brand {
  max-width: 380px;
}

.logo--footer .logo__mark {
  color: var(--color-cream);
  font-size: 22px;
}

.logo--footer .logo__text {
  color: rgba(246, 242, 234, 0.6);
}

.footer__desc {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(246, 242, 234, 0.65);
}

.footer__col h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.footer__col a,
.footer__col span {
  display: block;
  font-size: 14px;
  color: rgba(246, 242, 234, 0.75);
  padding: 6px 0;
  transition: color 0.3s var(--ease);
}

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

.footer__bottom {
  padding: 24px 0;
  background: rgba(0, 0, 0, 0.15);
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(246, 242, 234, 0.7);
}

.footer__copy a {
  color: var(--color-gold);
  margin: 0 4px;
  font-weight: 500;
}

.footer__beian {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer__beian a {
  color: rgba(246, 242, 234, 0.75);
  transition: color 0.3s var(--ease);
}

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

.footer__beian-sep {
  color: rgba(246, 242, 234, 0.3);
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-navy);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s var(--ease);
  z-index: 40;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-gold-2);
  color: var(--color-white);
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .services__grid,
  .advantage__grid,
  .process,
  .solutions__grid,
  .cases__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .hero__visual {
    height: 400px;
    max-width: 500px;
    margin: 0 auto;
  }
}

@media (max-width: 860px) {
  .container {
    padding: 0 20px;
  }

  .topbar__left {
    font-size: 11.5px;
    gap: 10px;
  }

  .topbar__divider {
    display: none;
  }

  .topbar__right {
    display: none;
  }

  .nav {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    height: calc(100vh - var(--topbar-h));
    padding: 32px 20px;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    overflow-y: auto;
    border-top: 1px solid var(--color-line);
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav__link {
    display: block;
    padding: 16px 8px;
    font-size: 16px;
    border-bottom: 1px solid var(--color-line);
  }

  .nav__link--cta {
    margin-top: 20px;
    text-align: center;
    border-bottom: none;
  }

  .burger {
    display: flex;
  }

  .section {
    padding: 70px 0;
  }

  .section__head {
    margin-bottom: 48px;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .hero__stats {
    gap: 24px;
  }

  .hero__stat-num {
    font-size: 30px;
  }

  .services__grid,
  .advantage__grid,
  .process,
  .solutions__grid,
  .cases__grid {
    grid-template-columns: 1fr;
  }

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

  .about__inner {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .about__deco {
    width: 160px;
    height: 160px;
    top: -20px;
    right: -20px;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 40px;
  }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__beian {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .more__grid {
    grid-template-columns: 1fr;
  }

  .hero__stats {
    flex-wrap: wrap;
  }

  .hero__cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__visual {
    height: 360px;
  }

  .hero__card--main {
    right: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .hero__orb {
    animation: none;
  }

  .hero__marquee-track {
    animation: none;
  }

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