:root {
  --navy: #06142f;
  --blue: #1f7af6;
  --cyan: #1fd5df;
  --ink: #0b162a;
  --muted: #65748a;
  --line: #d7e3f1;
  --soft: #f6f9fd;
  --white: #ffffff;
  --violet: #6d5dfc;
  --shadow: 0 24px 80px rgba(7, 20, 47, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: #f7f9fc;
  letter-spacing: 0;
}

body.modal-open {
  overflow: hidden;
}

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

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

button,
input {
  font: inherit;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 82px;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 clamp(18px, 4vw, 44px);
  background: #f8fbff;
  border-bottom: 1px solid rgba(215, 227, 241, 0.72);
  backdrop-filter: blur(22px);
  transition: box-shadow .25s ease, height .25s ease;
}

.site-header[data-elevated="true"] {
  box-shadow: 0 12px 38px rgba(13, 42, 78, 0.1);
}

.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 10px 28px rgba(7, 20, 47, .12);
}

.brand-wordmark {
  display: grid;
  gap: 1px;
  color: var(--navy);
  line-height: 1;
}

.brand-wordmark strong {
  font-size: 17px;
  font-weight: 950;
}

.brand-wordmark small {
  color: #47708f;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .12em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  margin-left: auto;
  color: #36516c;
  font-size: 13px;
  font-weight: 800;
}

.desktop-nav a {
  padding: 12px 0;
  white-space: nowrap;
}

.desktop-nav a:hover {
  color: var(--blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #38516d;
  cursor: pointer;
  font-weight: 800;
  font-size: 13px;
}

.divider {
  width: 1px;
  height: 14px;
  background: var(--line);
}

body[data-lang="zh"] .lang-zh,
body[data-lang="en"] .lang-en {
  color: var(--blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 900;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #1f7af6 0%, #15c8dc 100%);
  box-shadow: 0 18px 44px rgba(31, 122, 246, 0.28);
}

.btn-secondary {
  color: #eaf8ff;
  background: rgba(255,255,255,.08);
  border-color: rgba(173, 218, 255, .34);
  backdrop-filter: blur(14px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 12px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--navy);
  margin: 5px 0;
}

.mobile-menu {
  display: none;
}

.section-band {
  position: relative;
  overflow: hidden;
}

.hero {
  min-height: 100svh;
  padding: 128px 0 122px;
  background:
    linear-gradient(120deg, rgba(31, 122, 246, .18), transparent 24%),
    linear-gradient(300deg, rgba(31, 213, 223, .22), transparent 28%),
    linear-gradient(180deg, #07142e 0%, #0b1f44 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: .42;
  background-image:
    linear-gradient(rgba(123, 190, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123, 190, 255, .12) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 78%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 500px);
  gap: clamp(34px, 5vw, 70px);
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: #0ea5e9;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
}

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

.hero h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 5.4vw, 64px);
  line-height: 1;
  color: #ffffff;
  letter-spacing: 0;
}

h1 small,
h2 small {
  display: block;
  margin-top: 12px;
  color: #1475cf;
  font-size: .48em;
  line-height: 1.15;
  font-weight: 850;
}

.hero h2 {
  margin-bottom: 20px;
  color: #8de8ff;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.12;
}

.lead,
.section-copy p,
.wechat-layout p,
.final-inner p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.hero .lead {
  max-width: 700px;
  color: rgba(235, 246, 255, .78);
}

.quote {
  max-width: 640px;
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 3px solid #22d3ee;
  background: rgba(255, 255, 255, 0.08);
  color: #e9f8ff;
  font-size: 18px;
  font-weight: 850;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(16px);
}

.platform-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 6px;
}

.platform-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(220, 232, 247, .72);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.14);
  overflow: hidden;
}

.platform-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

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

.phone-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 56px;
  padding: 12px 16px;
  border: 1px solid rgba(173, 218, 255, .2);
  border-radius: 14px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255,255,255,.1), rgba(255,255,255,.055));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 14px 38px rgba(0,0,0,.12);
  backdrop-filter: blur(14px);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.phone-cta:hover {
  transform: translateY(-2px);
  border-color: rgba(31, 213, 223, .48);
  background: rgba(255,255,255,.12);
}

.phone-cta span {
  color: rgba(190, 221, 255, .72);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: .04em;
  white-space: nowrap;
}

.phone-cta strong {
  color: #fff;
  font-size: clamp(18px, 1.55vw, 22px);
  line-height: 1;
  font-weight: 950;
  white-space: nowrap;
}

.contact-phone-panel {
  max-width: 100%;
  margin-top: 30px;
  padding: 14px;
  border: 1px solid rgba(173, 218, 255, .24);
  border-radius: 22px;
  background:
    radial-gradient(circle at 20% 0%, rgba(31, 213, 223, .12), transparent 34%),
    rgba(255,255,255,.055);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 20px 58px rgba(0,0,0,.14);
  backdrop-filter: blur(18px);
  display: grid;
  grid-template-columns: 166px minmax(0, 1fr);
  gap: 12px;
  align-items: stretch;
}

.contact-phone-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-right: 1px solid rgba(173, 218, 255, .18);
}

.phone-head-icon {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(31, 213, 223, .36);
  border-radius: 12px;
  color: #7df4ff;
  background: rgba(31, 213, 223, .1);
  box-shadow: inset 0 0 18px rgba(31, 213, 223, .1), 0 0 26px rgba(31, 213, 223, .12);
  font-size: 18px;
}

.contact-phone-head p {
  margin: 0;
  color: #fff;
  font-size: 20px;
  line-height: 1.2;
  font-weight: 950;
}

.contact-phone-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  min-width: 0;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 580px;
  margin-top: 26px;
  border: 1px solid rgba(180, 220, 255, .18);
  border-radius: 16px;
  background: rgba(255,255,255,.07);
  overflow: hidden;
  backdrop-filter: blur(18px);
}

.hero-proof div {
  padding: 16px;
  background: rgba(255,255,255,.035);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  color: #fff;
  font-size: 15px;
  font-weight: 950;
}

.hero-proof span {
  margin-top: 6px;
  color: rgba(225, 242, 255, .68);
  font-size: 13px;
  font-weight: 750;
}

.hero-visual {
  position: relative;
  justify-self: end;
  width: min(500px, 100%);
  min-height: 630px;
}

.iphone-mockup {
  position: absolute;
  top: 8px;
  right: 46px;
  width: 380px;
  height: 610px;
}

.iphone-frame {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 12px;
  border-radius: 46px;
  background:
    linear-gradient(145deg, #f7fbff, #a8bed7 46%, #eef5ff);
  border: 1px solid rgba(232, 242, 255, .72);
  box-shadow:
    inset 0 0 0 2px rgba(255,255,255,.55),
    0 32px 90px rgba(0,0,0,.3);
}

.iphone-frame::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 42px;
  border: 1px solid rgba(6, 20, 47, .18);
  pointer-events: none;
}

.iphone-island {
  position: absolute;
  z-index: 4;
  top: 24px;
  left: 50%;
  width: 104px;
  height: 30px;
  border-radius: 999px;
  background: #07101f;
  transform: translateX(-50%);
  box-shadow: inset 0 -1px 1px rgba(255,255,255,.08);
}

.iphone-screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: 35px;
  background: #06142f;
}

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

.screen-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6,20,47,.7), rgba(6,20,47,.34) 38%, rgba(6,20,47,.93)),
    radial-gradient(circle at 50% 14%, rgba(31,213,223,.2), transparent 34%),
    linear-gradient(90deg, rgba(31,122,246,.14) 1px, transparent 1px),
    linear-gradient(rgba(31,213,223,.1) 1px, transparent 1px);
  background-size: auto, auto, 42px 42px, 42px 42px;
  pointer-events: none;
}

.phone-ui {
  position: absolute;
  inset: 0;
  z-index: 3;
  padding: 66px 22px 22px;
}

.phone-status {
  position: absolute;
  top: 20px;
  left: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255,255,255,.82);
  font-size: 12px;
  font-weight: 850;
}

.phone-search,
.phone-business,
.phone-growth,
.screen-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  border: 1px solid rgba(151, 221, 255, .24);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(11, 32, 70, .78), rgba(6, 20, 47, .62));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.08),
    0 18px 46px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}

.phone-search {
  top: 76px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
}

.phone-growth span {
  display: block;
  margin-bottom: 5px;
  color: rgba(205, 229, 255, .68);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: .08em;
}

.search-dot {
  position: relative;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(31, 213, 223, .08);
  border: 1px solid rgba(125, 244, 255, .34);
  box-shadow: inset 0 0 18px rgba(31, 213, 223, .12), 0 0 24px rgba(31, 213, 223, .12);
}

.search-dot::before,
.search-dot::after {
  content: "";
  position: absolute;
  display: block;
}

.search-dot::before {
  left: 8px;
  top: 7px;
  width: 10px;
  height: 10px;
  border: 2px solid #7df4ff;
  border-radius: 50%;
}

.search-dot::after {
  left: 18px;
  top: 19px;
  width: 8px;
  height: 2px;
  border-radius: 999px;
  background: #7df4ff;
  transform: rotate(45deg);
  transform-origin: left center;
}

.phone-search small {
  display: block;
  margin-bottom: 3px;
  color: rgba(208, 232, 255, .58);
  font-size: 10px;
  font-weight: 950;
  letter-spacing: .12em;
}

.phone-search strong {
  color: #ffffff;
  font-size: 20px;
  line-height: 1.08;
  font-weight: 950;
}

.phone-business {
  top: 158px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px;
}

.phone-business em {
  display: inline-flex;
  margin-bottom: 7px;
  padding: 4px 7px;
  border-radius: 999px;
  color: #7df4ff;
  background: rgba(31, 213, 223, .12);
  font-size: 9px;
  font-style: normal;
  font-weight: 950;
  letter-spacing: .12em;
}

.phone-business strong {
  display: block;
  color: #ffffff;
  font-size: 17px;
  line-height: 1.2;
  font-weight: 950;
}

.phone-business small {
  display: block;
  margin-top: 7px;
  color: rgba(205, 229, 255, .68);
  font-size: 12px;
  font-weight: 850;
}

.phone-growth {
  left: 22px;
  right: 22px;
  bottom: 104px;
  width: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 15px;
}

.phone-growth strong {
  display: block;
  color: #51dfff;
  font-size: 32px;
  line-height: .9;
  font-weight: 950;
}

.screen-caption {
  bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  background: rgba(6, 20, 47, .76);
  border-color: rgba(172, 218, 255, .2);
  color: #fff;
}

.screen-caption span {
  color: #1fd5df;
  font-size: 12px;
  font-weight: 950;
}

.screen-caption strong {
  color: #fff;
  font-size: 15px;
  font-weight: 950;
}

.signal-bars {
  display: inline-flex;
  align-items: end;
  gap: 4px;
  margin-left: auto;
}

.signal-bars i {
  width: 5px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
  box-shadow: 0 0 14px rgba(31, 213, 223, .42);
}

.signal-bars i:nth-child(1) {
  height: 10px;
}

.signal-bars i:nth-child(2) {
  height: 16px;
}

.signal-bars i:nth-child(3) {
  height: 22px;
}

.pin {
  position: relative;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: rgba(31, 213, 223, .08);
  border: 1px solid rgba(125, 244, 255, .3);
  box-shadow: inset 0 0 18px rgba(31, 213, 223, .12), 0 0 24px rgba(31, 122, 246, .1);
}

.pin::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 13px;
  height: 13px;
  border-radius: 50% 50% 50% 3px;
  background: linear-gradient(135deg, #7df4ff, #1f7af6);
  transform: translate(-50%, -58%) rotate(-45deg);
}

.pin::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 47%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #06142f;
  transform: translate(-50%, -50%);
}

.mini-line {
  flex: 0 0 120px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(255, 255, 255, .08);
}

.mini-line svg {
  width: 104px;
  height: 38px;
}

.section-pad {
  padding: clamp(78px, 9vw, 124px) 0;
}

.metrics-section {
  position: relative;
  z-index: 2;
  margin-top: 12px;
  padding: 58px 0 14px;
  background:
    linear-gradient(180deg, #07142e 0%, #0d2349 52%, #f7f9fc 100%);
}

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

.metric-card {
  position: relative;
  min-height: 210px;
  padding: 26px 24px;
  overflow: hidden;
  border: 1px solid rgba(172, 218, 255, .18);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.13), rgba(255,255,255,.07));
  box-shadow: 0 20px 58px rgba(0, 18, 52, .18);
  backdrop-filter: blur(20px);
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.metric-card::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 24px;
  width: 36px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  opacity: .9;
  pointer-events: none;
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: rgba(31, 213, 223, .42);
  box-shadow: 0 26px 76px rgba(31, 122, 246, .2), 0 0 34px rgba(31, 213, 223, .12);
}

.metric-card strong {
  position: relative;
  display: block;
  margin: 34px 0 16px;
  color: transparent;
  background: linear-gradient(135deg, #ffffff 0%, #62eaff 48%, #1f7af6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 26px rgba(31, 213, 223, .18);
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1;
  font-weight: 950;
}

.metric-card p,
.metric-kicker {
  position: relative;
}

.metric-kicker {
  display: block;
  color: #f4fbff;
  font-size: 18px;
  line-height: 1.25;
  font-weight: 950;
}

.metric-card p {
  margin: 0;
  color: rgba(224, 239, 255, .72);
  font-size: 14px;
  line-height: 1.7;
  font-weight: 750;
}

.two-column {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}

.section-copy h2,
.section-heading h2,
.wechat-layout h2,
.final-inner h2 {
  color: var(--navy);
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.12;
  margin-bottom: 18px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-heading h2 small,
.wechat-layout h2 small,
.final-inner h2 small {
  color: #1475cf;
  font-size: .44em;
}

.pain {
  background: #f7f9fc;
}

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

.pain-item,
.service-card,
.why-card,
.process-card {
  border: 1px solid rgba(215, 227, 241, .86);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 18px 54px rgba(7, 20, 47, 0.07);
}

.pain-item {
  min-height: 98px;
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 850;
  color: #142b46;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.pain-item:hover,
.service-card:hover,
.why-card:hover,
.process-card:hover {
  transform: translateY(-3px);
  border-color: rgba(31, 122, 246, .34);
  box-shadow: 0 28px 70px rgba(7, 20, 47, 0.11);
}

.why-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.pain-item span {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 42px;
  width: 42px;
  height: 26px;
  border-right: 1px solid rgba(31, 122, 246, .22);
  color: #1f7af6;
  background: transparent;
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .08em;
}

.services,
.why {
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 100%);
}

.case-section {
  background:
    radial-gradient(circle at 78% 12%, rgba(31, 213, 223, .12), transparent 28%),
    linear-gradient(180deg, #f7f9fc, #ffffff);
}

.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(340px, .96fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}

.case-media {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  border: 1px solid rgba(182, 207, 235, .78);
  border-radius: 28px;
  background: #06142f;
  box-shadow: 0 30px 90px rgba(7, 20, 47, .16);
}

.case-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 20, 47, .62), transparent 48%),
    linear-gradient(180deg, transparent 62%, rgba(6,20,47,.32));
  pointer-events: none;
}

.case-media img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
}

.case-copy h2 {
  margin-bottom: 18px;
  color: var(--navy);
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.12;
}

.case-copy > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.82;
}

.case-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.case-item {
  padding: 20px;
  border: 1px solid rgba(215, 227, 241, .9);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 16px 42px rgba(7, 20, 47, .06);
}

.case-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 18px;
  font-weight: 950;
}

.case-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.service-card,
.why-card,
.process-card {
  padding: 28px;
}

.service-card .platform-icon {
  margin-bottom: 18px;
}

.service-card h3,
.why-card h3,
.process-card h3 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 21px;
  line-height: 1.28;
}

.service-card h3 small,
.why-card h3 small,
.process-card h3 small {
  display: block;
  margin-top: 6px;
  color: var(--blue);
  font-size: 14px;
  line-height: 1.3;
}

.service-card p,
.process-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.76;
}

.industry-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.industry-pill {
  min-height: 58px;
  display: flex;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgba(207, 225, 246, .95);
  border-radius: 12px;
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  color: #153d67;
  font-weight: 850;
  box-shadow: 0 12px 34px rgba(15, 73, 130, 0.06);
}

.industry-pill small {
  color: var(--blue);
  font-weight: 800;
}

.store-info-panel {
  display: grid;
  grid-template-columns: minmax(260px, .82fr) minmax(0, 1.18fr);
  gap: 28px;
  margin-top: 38px;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid rgba(214, 231, 251, .9);
  border-radius: 22px;
  background:
    linear-gradient(125deg, rgba(31, 122, 246, .09), transparent 34%),
    linear-gradient(180deg, #ffffff, #f3f8ff);
  box-shadow: 0 28px 80px rgba(7, 20, 47, .1);
}

.store-info-copy h3 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.18;
}

.store-info-copy p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.store-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.store-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 70px;
  padding: 16px;
  border: 1px solid rgba(219, 233, 248, .92);
  border-radius: 12px;
  background: rgba(255,255,255,.9);
}

.store-info-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-weight: 900;
}

.store-info-item p {
  margin: 0;
  color: #173b61;
  font-weight: 850;
  line-height: 1.35;
}

.center-note {
  margin: 34px auto 0;
  max-width: 780px;
  color: var(--muted);
  text-align: center;
  font-size: 19px;
  font-weight: 800;
}

.why-card {
  min-height: 165px;
}

.process {
  background: #ffffff;
}

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

.process-card {
  position: relative;
  overflow: hidden;
}

.process-card::before {
  counter-increment: steps;
  content: "0" counter(steps);
  position: absolute;
  right: 18px;
  top: 10px;
  color: rgba(31, 122, 246, .1);
  font-size: 56px;
  font-weight: 950;
}

.wechat-section {
  background:
    linear-gradient(115deg, rgba(31, 122, 246, .2), transparent 32%),
    linear-gradient(135deg, #06142f, #0d2f68 58%, #071832);
  color: #fff;
}

.wechat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(28px, 6vw, 70px);
  align-items: center;
}

.wechat-layout h2,
.wechat-layout h2 small,
.wechat-layout .lead {
  color: #fff;
}

.wechat-benefits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0;
}

.wechat-benefit {
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius);
  background: rgba(255,255,255,.08);
  color: #eaf7ff;
  font-weight: 800;
}

.qr-card {
  padding: 20px;
  border-radius: 24px;
  background: #fff;
  color: var(--navy);
  box-shadow: 0 24px 70px rgba(0,0,0,.22);
  text-align: center;
}

.qr-card img {
  width: 220px;
  height: 220px;
  margin: 0 auto 14px;
  object-fit: contain;
}

.qr-card p {
  margin: 0;
  color: var(--navy);
  font-weight: 900;
}

.final-cta {
  padding: 92px 0;
  background:
    linear-gradient(180deg, #f7f9fc, #ffffff);
}

.final-inner {
  text-align: center;
}

.final-inner p {
  max-width: 760px;
  margin: 0 auto 24px;
}

.final-actions {
  justify-content: center;
}

.site-footer {
  padding: 30px 0;
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
}

.footer-inner {
  display: block;
  text-align: center;
}

.footer-inner p {
  margin: 0;
}

.link-button {
  padding: 0;
  border: 0;
  color: var(--blue);
  background: transparent;
  cursor: pointer;
  font-weight: 850;
}

.mobile-sticky {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 22px;
  opacity: 0;
  visibility: hidden;
  transition: .2s ease;
}

.modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 17, 38, 0.62);
  backdrop-filter: blur(8px);
}

.modal-card {
  position: relative;
  width: min(430px, 100%);
  padding: 26px;
  border-radius: 18px;
  background: #fff;
  color: var(--ink);
  text-align: center;
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
}

.modal-card h2 {
  margin-bottom: 16px;
  color: var(--navy);
  font-size: 26px;
}

.modal-card img {
  width: 220px;
  height: 220px;
  margin: 0 auto 16px;
  object-fit: contain;
}

.modal-card p {
  color: var(--muted);
  line-height: 1.7;
}

.phone-modal-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.phone-modal-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 56px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, #06142f, #123a73);
  font-size: 20px;
  font-weight: 950;
  box-shadow: 0 14px 34px rgba(7, 20, 47, .14);
}

.phone-modal-list span {
  color: rgba(214, 236, 255, .72);
  font-size: 14px;
  font-weight: 850;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes pulse {
  0%, 100% { transform: scale(.96); opacity: .92; }
  50% { transform: scale(1.04); opacity: .62; }
}

@media (max-width: 1080px) {
  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
    margin-left: 0;
  }

  .header-actions {
    margin-left: auto;
  }

  .hero-grid,
  .two-column,
  .wechat-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    justify-self: center;
    width: min(520px, 100%);
  }

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

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

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

  .case-layout {
    grid-template-columns: 1fr;
  }

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

  .store-info-panel {
    grid-template-columns: 1fr;
  }

  .wechat-layout {
    text-align: left;
  }

  .qr-card {
    width: fit-content;
  }

  .mobile-menu {
    position: fixed;
    z-index: 45;
    top: 82px;
    left: 0;
    right: 0;
    display: grid;
    gap: 2px;
    padding: 12px 20px 18px;
    background: rgba(255,255,255,.97);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(10, 38, 78, .1);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: .2s ease;
  }

  .mobile-menu.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .mobile-menu a {
    padding: 13px 4px;
    color: var(--navy);
    font-weight: 850;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, 1160px);
  }

  .site-header {
    height: 68px;
    padding: 0 14px;
  }

  .brand img {
    width: 52px;
    height: 52px;
  }

  .brand-wordmark {
    display: none;
  }

  .lang-toggle {
    padding: 0 10px;
    min-height: 36px;
  }

  .mobile-menu {
    top: 68px;
  }

  .hero {
    padding: 104px 0 64px;
  }

  .hero h1 {
    font-size: clamp(38px, 13vw, 54px);
  }

  .hero-proof {
    grid-template-columns: 1fr;
  }

  .hero h1 small,
  .hero h2 small {
    font-size: .42em;
  }

  .lead,
  .section-copy p,
  .wechat-layout p,
  .final-inner p {
    font-size: 16px;
  }

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

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

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

  .contact-phone-head {
    border-right: 0;
    border-bottom: 1px solid rgba(173, 218, 255, .18);
  }

  .phone-cta {
    width: 100%;
  }

  .wechat-section .contact-phone-panel,
  .wechat-section .qr-card {
    display: none;
  }

  .hero-visual {
    width: 100%;
    min-height: 560px;
  }

  .iphone-mockup {
    top: 0;
    right: auto;
    left: 50%;
    width: min(300px, 82vw);
    height: 520px;
    transform: translateX(-50%);
    opacity: .94;
  }

  .phone-ui {
    padding: 62px 17px 18px;
  }

  .phone-status {
    left: 20px;
    right: 20px;
  }

  .phone-business {
    left: 18px;
    right: 18px;
    top: 142px;
    bottom: auto;
    padding: 12px;
  }

  .phone-search {
    left: 18px;
    right: 18px;
    top: 68px;
    padding: 11px 12px;
  }

  .phone-search strong {
    font-size: 17px;
  }

  .phone-business strong {
    font-size: 15px;
  }

  .phone-business small {
    font-size: 11px;
  }

  .phone-growth {
    left: 18px;
    right: 18px;
    bottom: 78px;
    gap: 10px;
    padding: 12px;
  }

  .phone-growth strong {
    font-size: 27px;
  }

  .mini-line {
    flex-basis: 82px;
    height: 40px;
  }

  .mini-line svg {
    width: 78px;
    height: 32px;
  }

  .screen-caption {
    left: 18px;
    right: 18px;
    bottom: 20px;
  }

  .pain-grid,
  .card-grid,
  .process-grid,
  .wechat-benefits,
  .store-info-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metrics-section {
    margin-top: 0;
    padding-top: 36px;
    padding-bottom: 36px;
    background: linear-gradient(180deg, #07142e 0%, #0d2349 100%);
  }

  .metric-card {
    min-height: 190px;
    padding: 22px;
    background: linear-gradient(180deg, rgba(255,255,255,.13), rgba(255,255,255,.08));
  }

  .metric-card strong {
    font-size: 38px;
  }

  .case-media,
  .case-media img {
    min-height: 360px;
  }

  .store-info-panel {
    padding: 20px;
    border-radius: 14px;
  }

  .service-card,
  .why-card,
  .process-card {
    padding: 20px;
  }

  .industry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .industry-pill {
    min-height: 44px;
    padding: 9px 10px;
    border-radius: 999px;
    font-size: 13px;
    justify-content: center;
    text-align: center;
    box-shadow: 0 8px 22px rgba(15, 73, 130, 0.045);
  }

  .qr-card img,
  .modal-card img {
    width: 180px;
    height: 180px;
  }

  .mobile-sticky {
    position: fixed;
    z-index: 42;
    left: 12px;
    right: 12px;
    bottom: 12px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 10px;
    border: 1px solid rgba(219,231,245,.8);
    border-radius: 16px;
    background: rgba(255,255,255,.92);
    box-shadow: 0 14px 40px rgba(10, 38, 78, 0.16);
    backdrop-filter: blur(14px);
  }

  .mobile-sticky button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    border: 0;
    border-radius: var(--radius);
    color: #fff;
    background: #06142f;
    font-weight: 900;
    text-align: center;
    box-shadow: 0 10px 24px rgba(7, 20, 47, .16);
  }

  .mobile-sticky button:first-child {
    background: linear-gradient(135deg, #06142f, #123a73);
  }

  .mobile-sticky button:last-child {
    background: linear-gradient(135deg, #10b981, #1fd5df);
  }

  .site-footer {
    padding-bottom: 112px;
  }
}

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