/* 湖南随心所想网络科技有限公司 — Tencent-inspired clean corporate */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@600;700&display=swap");

:root {
  --blue: #0052d9;
  --blue-hover: #266fe8;
  --blue-soft: #e8f0fe;
  --ink: #000000;
  --ink-2: #1a1a1a;
  --muted: #666666;
  --muted-2: #999999;
  --line: #e7e7e7;
  --bg: #ffffff;
  --bg-soft: #f5f5f5;
  --hero-ink: #ffffff;
  --footer: #0d0d0d;
  --nav-h: 80px;
  --max: 1100px;
  --page-pad: clamp(32px, 8vw, 140px);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Noto Serif SC", "Noto Sans SC", serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--ink-2);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

body[data-lang="en"] {
  font-family: "Noto Sans SC", Helvetica, Arial, sans-serif;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

.container {
  width: min(100% - (var(--page-pad) * 2), var(--max));
  margin-inline: auto;
}

/* ——— Header: clean, airy ——— */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.3s var(--ease), box-shadow 0.3s, color 0.3s;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
  color: var(--ink);
}

.site-header.on-dark:not(.is-scrolled) {
  color: var(--hero-ink);
}

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

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

.logo-img {
  display: block;
  height: 56px;
  width: auto;
  max-width: min(52vw, 240px);
  object-fit: contain;
  object-position: left center;
  background: #fff;
  border-radius: 10px;
  padding: 6px 12px;
  box-shadow: 0 2px 10px rgba(0, 20, 60, 0.12);
}

.logo-img--footer {
  height: 64px;
  max-width: 260px;
  margin-bottom: 14px;
  padding: 8px 14px;
}

.brand-name {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: min(42vw, 360px);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-desktop a {
  padding: 8px 11px;
  font-size: 14px;
  font-weight: 400;
  opacity: 0.88;
  transition: opacity 0.2s, color 0.2s;
  white-space: nowrap;
}

.nav-desktop a:hover,
.nav-desktop a.is-active {
  opacity: 1;
}

.site-header.is-scrolled .nav-desktop a.is-active {
  color: var(--blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-switch {
  position: relative;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s;
}

.site-header.on-dark:not(.is-scrolled) .lang-btn {
  border-color: rgba(255, 255, 255, 0.35);
}

.site-header.is-scrolled .lang-btn,
.site-header:not(.on-dark) .lang-btn {
  border-color: var(--line);
}

.lang-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.lang-btn svg {
  width: 12px;
  height: 12px;
  opacity: 0.7;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: 0.2s var(--ease);
  color: var(--ink);
}

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

.lang-menu button {
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: background 0.15s;
}

.lang-menu button span:last-child {
  font-size: 12px;
  color: var(--muted);
}

.lang-menu button:hover,
.lang-menu button.is-active {
  background: var(--blue-soft);
  color: var(--blue);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  place-items: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  color: var(--hero-ink);
  overflow: hidden;
  padding: calc(var(--nav-h) + 48px) 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #0b2f7a;
  background-image:
    linear-gradient(115deg, rgba(6, 18, 42, 0.72) 0%, rgba(6, 18, 42, 0.35) 48%, rgba(6, 18, 42, 0.15) 100%),
    url("../assets/images/hero-bg.svg");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 70% 30%, rgba(126, 182, 255, 0.22), transparent 32%),
    radial-gradient(circle at 20% 80%, rgba(47, 125, 255, 0.2), transparent 36%);
  animation: softGlow 10s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(120deg, transparent 10%, #000 45%, #000 100%);
  pointer-events: none;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  width: min(100% - (var(--page-pad) * 2), var(--max));
}

.hero-content {
  max-width: 640px;
  opacity: 0;
  animation: rise 1s var(--ease) 0.15s forwards;
}

.hero-visual {
  position: relative;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  opacity: 0;
  animation: rise 1s var(--ease) 0.35s forwards;
}

.hero-orbit {
  position: absolute;
  inset: 8% 6%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 32px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  animation: softGlow 8s ease-in-out infinite alternate;
}

.hero-icons {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 28px;
}

.hero-ico {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 22px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 28px rgba(0, 20, 60, 0.18);
  transition: transform 0.45s var(--ease), background 0.35s var(--ease);
}

.hero-ico svg {
  width: 44%;
  height: 44%;
}

.hero-ico--accent {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.45);
}

.hero-visual:hover .hero-ico:nth-child(odd) {
  transform: translateY(-4px);
}

.hero-visual:hover .hero-ico:nth-child(even) {
  transform: translateY(3px);
}

.hero-visual__mark {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.55);
}

.hero-brand {
  font-family: var(--display);
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 20px;
  opacity: 0.95;
}

.hero-desc {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
  max-width: 36em;
  opacity: 0.78;
  margin-bottom: 40px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 2px;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}

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

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

.btn-primary:hover {
  background: #f0f4ff;
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-solid {
  background: var(--blue);
  color: #fff;
}

.btn-solid:hover {
  background: var(--blue-hover);
}

.btn-outline {
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-text {
  color: var(--blue);
  font-weight: 500;
  font-size: 15px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-text:hover {
  color: var(--blue-hover);
}

/* ——— Sections ——— */
.section {
  padding: clamp(80px, 12vw, 140px) 0;
}

.section-soft {
  background: var(--bg-soft);
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(48px, 6vw, 72px);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}

.section-head h2,
.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.section-head p,
.lead {
  font-size: 17px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.85;
  max-width: 40em;
}

.section-head.center p {
  margin-inline: auto;
}

/* Statement — Tencent-style large line */
.statement {
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--bg-soft);
}

.statement .container {
  display: flex;
  justify-content: center;
}

.statement blockquote {
  font-family: var(--display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  max-width: 40em;
  width: 100%;
  letter-spacing: 0.02em;
  margin: 0;
  padding: clamp(36px, 5vw, 56px) clamp(32px, 5vw, 64px);
  background: #fff;
  border: 1px solid rgba(0, 82, 217, 0.1);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(15, 40, 80, 0.06);
  position: relative;
}

.statement blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 4px;
  border-radius: 0 2px 2px 0;
  background: var(--blue);
}

/* Business pillars — constrained width with side breathing room */
#pillar-stack {
  width: min(100% - (var(--page-pad) * 2), var(--max));
  margin: 0 auto 64px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.pillar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: min(64vh, 560px);
  border-bottom: 1px solid var(--line);
}

.pillar:last-child {
  border-bottom: 0;
}

.pillar:nth-child(even) .pillar-media {
  order: 2;
}

.pillar-media {
  position: relative;
  min-height: 320px;
  overflow: hidden;
  background-color: #0c2448;
}

.pillar-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: #0c2448;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transition: transform 0.8s var(--ease);
}

.pillar-media[data-product="software"]::before {
  background-image: url("../assets/images/card-software.svg?v=4");
}

.pillar-media[data-product="cps"]::before {
  background-image: url("../assets/images/card-cps.svg?v=4");
}

.pillar-media[data-product="kol"]::before {
  background-image: url("../assets/images/card-kol.svg?v=4");
}

.pillar-media[data-product="market"]::before {
  background-image: url("../assets/images/card-market.svg?v=4");
}

.pillar-media[data-product="data"]::before {
  background-image: url("../assets/images/card-data.svg?v=4");
}

.pillar-media[data-product="crossborder"]::before {
  background-image: url("../assets/images/card-crossborder.svg?v=4");
}

.pillar:hover .pillar-media::before {
  transform: scale(1.04);
}

.pillar-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 20, 48, 0.05), rgba(6, 20, 48, 0.22));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.pillar-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(40px, 6vw, 80px) clamp(32px, 5vw, 72px);
  background: #fff;
}

.pillar-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
}

.pillar-body h3 {
  font-family: var(--display);
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink);
}

.pillar-title-link {
  color: inherit;
  transition: color 0.2s;
}

.pillar-title-link:hover {
  color: var(--blue);
}

.pillar-media {
  display: block;
  cursor: pointer;
}

.product-row.feature-row:not(.product-card),
.product-row--solo.feature-row:not(.product-card) {
  display: block;
  grid-template-columns: none;
  width: 100%;
}

.product-row.product-card.feature-row {
  width: 100%;
}

.product-row .cta-row {
  margin-top: 8px;
}

.product-row .btn {
  white-space: nowrap;
  width: auto;
  min-width: 140px;
}

.product-row h3 {
  margin-top: 0;
}

.product-row p {
  max-width: 52em;
}

.pillar-kicker {
  font-size: 18px;
  font-weight: 300;
  color: var(--muted);
  margin-bottom: 20px;
}

.pillar-body > p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 34em;
}

.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 28px;
}

.pillar-tags span {
  font-size: 13px;
  color: var(--ink-2);
  font-weight: 400;
}

.pillar-tags span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--blue);
  margin-right: 8px;
  vertical-align: middle;
}

/* Process — clean numbered list */
.process-wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(40px, 7vw, 96px);
  align-items: start;
}

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

.process-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 8px 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.process-item.is-in {
  opacity: 1;
  transform: none;
}

.process-num {
  font-size: 15px;
  font-weight: 500;
  color: var(--blue);
  padding-top: 4px;
}

.process-item h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--ink);
}

.process-item p {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
}

/* Clients mention */
.clients {
  padding: clamp(64px, 8vw, 100px) 0;
  background: var(--bg-soft);
  text-align: center;
}

.clients p {
  font-size: 15px;
  color: var(--muted);
  font-weight: 300;
  margin-bottom: 24px;
}

.clients-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 48px;
  font-size: 18px;
  font-weight: 500;
  color: var(--ink-2);
}

/* Page hero inner — photo banner + light veil for dark title */
.page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--nav-h) + 72px) 0 72px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #e8eef8;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transform: scale(1.02);
}

.page-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.78) 42%, rgba(245, 248, 252, 0.55) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.15) 100%);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
}

.page-hero--about .page-hero__bg {
  background-image: url("../assets/images/hero-about.jpg");
}

.page-hero--products .page-hero__bg {
  background-image: url("../assets/images/hero-products.jpg");
}

.page-hero--partners .page-hero__bg {
  background-image: url("../assets/images/hero-partners.jpg");
}

.page-hero--contact .page-hero__bg {
  background-image: url("../assets/images/hero-contact.jpg");
}

.page-hero .lead {
  max-width: 36em;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.about-body {
  font-size: 17px;
  font-weight: 300;
  color: var(--ink-2);
  line-height: 1.9;
}

.meta-list {
  margin-top: 40px;
}

.meta-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.meta-list strong {
  color: var(--muted-2);
  font-weight: 400;
}

.about-panel {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: #fff;
  padding: clamp(32px, 4vw, 48px);
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  background:
    radial-gradient(circle at 85% 12%, rgba(255, 255, 255, 0.2), transparent 36%),
    linear-gradient(155deg, #0b2f7a 0%, #1557c0 52%, #3d8bfd 100%);
  border: 1px solid rgba(0, 82, 217, 0.2);
  box-shadow: 0 12px 36px rgba(15, 35, 80, 0.12);
}

.about-panel__icons {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.about-ico {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 20px;
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(2px);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
}

.about-ico svg {
  width: 46%;
  height: 46%;
}

.about-panel:hover .about-ico:nth-child(odd) {
  transform: translateY(-3px);
}

.about-panel:hover .about-ico:nth-child(even) {
  transform: translateY(2px);
  background: rgba(255, 255, 255, 0.2);
}

.about-panel p {
  position: relative;
  z-index: 1;
  font-family: var(--display);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1.45;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.22);
  max-width: 12em;
}

.faq-block {
  margin-top: clamp(56px, 8vw, 88px);
  padding-top: clamp(40px, 6vw, 56px);
  border-top: 1px solid var(--line);
}

.faq-block h2 {
  font-family: var(--display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--ink);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 52em;
}

.faq-item {
  border: 1px solid var(--line);
  background: #fff;
  padding: 0;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

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

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--blue);
  font-weight: 400;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item p {
  padding: 0 20px 18px;
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
}

/* Feature rows / product cards */
.feature-stack {
  display: flex;
  flex-direction: column;
  gap: 28px;
  border-top: 0;
}

.feature-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.feature-row.product-row:not(.product-card) {
  display: block;
  width: 100%;
}

.product-card.feature-row {
  position: relative;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 0;
  align-items: stretch;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 8px 28px rgba(15, 35, 80, 0.06);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}

.product-card.feature-row:hover {
  border-color: #c8d8f5;
  box-shadow: 0 14px 36px rgba(0, 82, 217, 0.12);
  transform: translateY(-2px);
}

.product-card__media {
  width: 220px;
  min-height: 260px;
  align-self: stretch;
  background-color: #0c2448;
  overflow: hidden;
}

.product-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  object-position: center;
}

.product-card .feature-label {
  display: none !important;
}

.product-card__body {
  padding: 36px 40px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-card__body .cta-row {
  margin-top: 20px;
}

.feature-label {
  display: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.08em;
  padding-top: 8px;
}

.feature-row h3 {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--ink);
}

.feature-row p {
  font-size: 16px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 18px;
  max-width: 48em;
}

.biz-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.biz-tags span {
  font-size: 13px;
  color: var(--ink-2);
}

.biz-tags span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--blue);
  margin-right: 8px;
  vertical-align: middle;
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
}

.contact-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.contact-item .label {
  font-size: 13px;
  color: var(--muted-2);
  margin-bottom: 10px;
  font-weight: 400;
}

.contact-item a,
.contact-item .value {
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
}

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

.wechat-box {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
}

.wechat-box h3 {
  font-size: 20px;
  font-weight: 500;
}

.wechat-box p {
  font-size: 14px;
  color: var(--muted);
  font-weight: 300;
}

.qr-wrap {
  width: 200px;
  height: 200px;
  background: #fff;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  margin-top: 8px;
  overflow: hidden;
  position: relative;
}

.qr-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.qr-wrap img.is-hidden {
  display: none;
}

.qr-placeholder {
  width: 100%;
  height: 100%;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  text-align: center;
  font-size: 12px;
  color: var(--muted-2);
  line-height: 1.6;
}

.qr-placeholder.is-visible {
  display: flex;
}

.wa-card {
  width: 100%;
  margin-top: 8px;
  padding: 28px 20px;
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.wa-card__mark {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
}

.wa-card__name {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  word-break: break-all;
}

.wa-card .btn {
  min-width: 180px;
  background: #25d366;
}

.wa-card .btn:hover {
  background: #1fb855;
}

/* Footer */
.site-footer {
  background: var(--footer);
  color: rgba(255, 255, 255, 0.65);
  padding: 64px 0 28px;
  font-size: 14px;
  font-weight: 300;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-logo {
  display: inline-block;
  line-height: 0;
}

.footer-brand .brand-name {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  max-width: none;
  white-space: normal;
  margin-bottom: 16px;
}

.footer-brand p {
  max-width: 32em;
  line-height: 1.8;
}

.footer-col h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

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

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

.nav-mobile {
  position: fixed;
  inset: 0;
  background: #fff;
  color: var(--ink);
  z-index: 90;
  padding: calc(var(--nav-h) + 24px) 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
}

.nav-mobile.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-mobile a {
  font-size: 24px;
  font-weight: 500;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes softGlow {
  from {
    opacity: 0.85;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 960px) {
  .hero-layout,
  .pillar,
  .process-wrap,
  .about-grid,
  .contact-layout,
  .footer-grid,
  .feature-row {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 0;
    max-width: 420px;
  }

  .hero-icons {
    padding: 20px;
    gap: 12px;
  }

  .product-card.feature-row {
    grid-template-columns: 1fr;
  }

  .product-card__media {
    width: 100%;
    min-height: 180px;
    aspect-ratio: 5 / 3;
  }

  .product-card__body {
    padding: 24px;
  }

  .pillar:nth-child(even) .pillar-media {
    order: 0;
  }

  .pillar {
    min-height: 0;
  }

  .pillar-media {
    min-height: 240px;
  }

  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .logo-img {
    height: 44px;
    max-width: min(56vw, 180px);
    padding: 4px 8px;
  }

  .brand-name {
    max-width: min(42vw, 200px);
    font-size: 12px;
  }
}

@media (max-width: 560px) {
  :root {
    --page-pad: 16px;
  }

  .container,
  #pillar-stack {
    width: min(100% - (var(--page-pad) * 2), var(--max));
  }

  .cta-row .btn {
    width: 100%;
  }

  .meta-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

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