:root {
  color-scheme: light;
  --page: #fafbfc;
  --surface: #ffffff;
  --surface-soft: #f3f6f8;
  --ink: #0f172a;
  --ink-soft: #475569;
  --muted: #7c8aa0;
  --line: #dfe5ec;
  --indigo: #4f46e5;
  --violet: #7c3aed;
  --cyan: #0891b2;
  --green: #059669;
  --orange: #ea580c;
  --focus: #0e7490;
  --brand-doubao: #4d6bfe;
  --brand-deepseek: #4d6bfe;
  --brand-wenxin: #2932e1;
  --brand-tongyi: #615ced;
  --brand-yuanbao: #00c573;
  --brand-zhipu: #3859ff;
  --brand-kimi: #1a1a1a;
  --brand-metaso: #2b5aed;
  --brand-360ai: #00b57e;
  --brand-xfyun: #e8404a;
  --shadow-sm: 0 6px 24px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 54px rgba(15, 23, 42, 0.11);
  --content: 1200px;
  --nav-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--page);
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

img,
svg {
  display: block;
}

h1,
h2,
h3 {
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: rgba(79, 70, 229, 0.18);
  color: var(--ink);
}

:focus-visible {
  outline: 3px solid rgba(14, 116, 144, 0.5);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--ink);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.icon-library {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.button svg,
.text-link svg,
.trust-list svg,
.feature-icon svg,
.step-icon svg,
.advantage-icon svg,
.banner-icon svg,
.service-phone svg,
.menu-toggle svg {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.section {
  position: relative;
  padding: 112px 24px;
}

.section-shell,
.nav-shell,
.footer-shell,
.cta-shell {
  width: min(100%, var(--content));
  margin: 0 auto;
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-heading h2,
.platform-heading h2 {
  font-size: 38px;
  font-weight: 760;
  line-height: 1.2;
  letter-spacing: 0;
}

.section-heading p,
.platform-heading p {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.7;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 800ms ease-out,
    transform 800ms ease-out;
}

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

.feature-grid .reveal:nth-child(2),
.workflow-list .reveal:nth-child(2),
.platform-grid .reveal:nth-child(2),
.advantages-grid .reveal:nth-child(2) {
  transition-delay: 80ms;
}

.feature-grid .reveal:nth-child(3),
.workflow-list .reveal:nth-child(3),
.platform-grid .reveal:nth-child(3),
.advantages-grid .reveal:nth-child(3) {
  transition-delay: 160ms;
}

.feature-grid .reveal:nth-child(4),
.workflow-list .reveal:nth-child(4),
.platform-grid .reveal:nth-child(4),
.advantages-grid .reveal:nth-child(4) {
  transition-delay: 240ms;
}

.feature-grid .reveal:nth-child(5),
.platform-grid .reveal:nth-child(5),
.advantages-grid .reveal:nth-child(5) {
  transition-delay: 320ms;
}

.feature-grid .reveal:nth-child(6),
.platform-grid .reveal:nth-child(6),
.advantages-grid .reveal:nth-child(6) {
  transition-delay: 400ms;
}

.platform-grid .reveal:nth-child(7) {
  transition-delay: 480ms;
}

.platform-grid .reveal:nth-child(8) {
  transition-delay: 560ms;
}

.platform-grid .reveal:nth-child(9) {
  transition-delay: 640ms;
}

.platform-grid .reveal:nth-child(10) {
  transition-delay: 720ms;
}

/* Navigation */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  background: transparent;
  transition:
    background-color 260ms ease,
    border-color 260ms ease,
    box-shadow 260ms ease;
}

.site-header.is-scrolled,
.site-header.menu-open {
  border-bottom-color: rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.04);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.nav-shell {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 100%;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.28), transparent 50%),
    linear-gradient(135deg, #4338ca, #0891b2);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.22);
  color: #ffffff;
}

.brand-mark::after {
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
  content: "";
}

.brand-mark span {
  position: relative;
  z-index: 1;
  font-size: 13px;
  font-weight: 800;
}

.brand-name {
  background: linear-gradient(120deg, #312e81, #4f46e5 48%, #0e7490);
  background-clip: text;
  color: transparent;
  font-size: 22px;
  font-weight: 820;
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
}

.desktop-nav a,
.login-link {
  position: relative;
  color: #405069;
  font-size: 15px;
  font-weight: 600;
  transition: color 180ms ease;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  border-radius: 1px;
  background: var(--indigo);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.desktop-nav a:hover,
.login-link:hover {
  color: var(--indigo);
}

.desktop-nav a:hover::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    border-color 220ms ease,
    background-color 220ms ease,
    color 220ms ease;
}

.button svg {
  width: 17px;
  height: 17px;
  transition: transform 220ms ease;
}

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

.button:hover svg {
  transform: translateX(3px);
}

.button-small {
  min-height: 40px;
  padding: 0 18px;
}

.button-large {
  min-height: 52px;
  padding: 0 26px;
  font-size: 16px;
}

.button-primary {
  background: linear-gradient(120deg, #4f46e5, #6d28d9);
  box-shadow: 0 8px 22px rgba(79, 70, 229, 0.22);
  color: #ffffff;
}

.button-primary:hover {
  box-shadow: 0 13px 28px rgba(79, 70, 229, 0.3);
}

.button-secondary {
  border-color: #cfd7e3;
  background: rgba(255, 255, 255, 0.78);
  color: #27364d;
}

.button-secondary:hover {
  border-color: rgba(79, 70, 229, 0.55);
  background: #ffffff;
  color: var(--indigo);
  box-shadow: var(--shadow-sm);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid #d8e0ea;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  cursor: pointer;
}

.menu-toggle svg {
  width: 21px;
  height: 21px;
}

.menu-toggle .close-icon {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-icon {
  display: none;
}

.menu-toggle[aria-expanded="true"] .close-icon {
  display: block;
}

.mobile-menu {
  display: none;
}

/* Hero */
.hero-section {
  position: relative;
  min-height: min(830px, calc(100svh - 88px));
  overflow: hidden;
  background: #f8fafc;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-wash {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(250, 251, 252, 0.98) 0%, rgba(250, 251, 252, 0.92) 34%, rgba(250, 251, 252, 0.2) 72%),
    linear-gradient(180deg, rgba(250, 251, 252, 0.08) 60%, #fafbfc 100%);
}

.hero-shell {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, var(--content));
  min-height: min(830px, calc(100svh - 88px));
  margin: 0 auto;
  padding: 124px 24px 82px;
  grid-template-columns: minmax(0, 1.06fr) minmax(480px, 0.94fr);
  align-items: center;
  gap: 36px;
}

.hero-copy {
  position: relative;
  z-index: 3;
  max-width: 690px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  color: #4338ca;
  font-size: 15px;
  font-weight: 720;
}

.hero-kicker::before {
  width: 27px;
  height: 1px;
  background: currentColor;
  content: "";
}

.hero-copy h1 {
  display: grid;
  color: var(--ink);
  font-size: 56px;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-line {
  display: block;
}

.hero-line + .hero-line {
  margin-top: 5px;
}

.hero-gradient {
  background: linear-gradient(105deg, #3730a3 0%, #4f46e5 38%, #7c3aed 68%, #0e7490 100%);
  background-clip: text;
  color: transparent;
}

.hero-description {
  max-width: 610px;
  margin-top: 25px;
  color: #3f4f66;
  font-size: 18px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 31px;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 24px;
  color: #607086;
  font-size: 13px;
  font-weight: 560;
}

.trust-list li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.trust-list svg {
  width: 16px;
  height: 16px;
  padding: 2px;
  border-radius: 50%;
  background: rgba(5, 150, 105, 0.1);
  color: var(--green);
  stroke-width: 2.6;
}

.hero-visual {
  position: relative;
  z-index: 2;
  display: grid;
  min-width: 0;
  min-height: 590px;
  place-items: center;
}

.platform-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 560px;
  height: 560px;
  transform: translate(calc(-50% + 18px), -50%);
}

.orbit-rings {
  position: absolute;
  inset: 60px;
  border: 1px solid rgba(79, 70, 229, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 46px rgba(79, 70, 229, 0.045),
    0 0 0 47px rgba(79, 70, 229, 0.09),
    0 0 0 93px rgba(8, 145, 178, 0.025),
    0 0 0 94px rgba(8, 145, 178, 0.08);
}

.orbit-rings::before,
.orbit-rings::after {
  position: absolute;
  border-radius: 50%;
  content: "";
}

.orbit-rings::before {
  inset: -24px;
  border-top: 2px solid rgba(79, 70, 229, 0.48);
  border-right: 2px solid transparent;
  border-bottom: 2px solid rgba(8, 145, 178, 0.34);
  border-left: 2px solid transparent;
  animation: orbit-spin 60s linear infinite;
}

.orbit-rings::after {
  inset: 92px;
  border: 1px dashed rgba(79, 70, 229, 0.3);
  animation: orbit-spin-reverse 48s linear infinite;
}

.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 4;
  display: flex;
  width: 116px;
  height: 116px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 50%;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.3), transparent 42%),
    linear-gradient(135deg, #4338ca, #6d28d9 58%, #0891b2);
  box-shadow:
    0 0 0 10px rgba(255, 255, 255, 0.55),
    0 20px 56px rgba(79, 70, 229, 0.28);
  color: #ffffff;
  transform: translate(-50%, -50%);
  animation: core-pulse 2s ease-in-out infinite;
}

.orbit-core strong {
  position: relative;
  z-index: 1;
  font-size: 19px;
  font-weight: 800;
}

.orbit-core > span:last-child {
  position: relative;
  z-index: 1;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 9px;
}

.core-signal {
  position: absolute;
  width: 80px;
  height: 80px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
}

.orbit-node {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  transform: translate(-50%, -50%) translate(var(--x), var(--y));
  transition:
    opacity 520ms ease,
    transform 680ms cubic-bezier(0.22, 1, 0.36, 1);
}

.motion-ready:not(.reduced-motion) .orbit-node {
  opacity: 0;
  transform: translate(-50%, -50%) translate(calc(var(--x) * 0.2), calc(var(--y) * 0.2)) scale(0.68);
}

.motion-ready.hero-ready:not(.reduced-motion) .orbit-node {
  opacity: 1;
  transform: translate(-50%, -50%) translate(var(--x), var(--y)) scale(1);
}

.hero-ready .node-1 { transition-delay: 100ms; }
.hero-ready .node-2 { transition-delay: 150ms; }
.hero-ready .node-3 { transition-delay: 200ms; }
.hero-ready .node-4 { transition-delay: 250ms; }
.hero-ready .node-5 { transition-delay: 300ms; }
.hero-ready .node-6 { transition-delay: 350ms; }
.hero-ready .node-7 { transition-delay: 400ms; }
.hero-ready .node-8 { transition-delay: 450ms; }
.hero-ready .node-9 { transition-delay: 500ms; }
.hero-ready .node-10 { transition-delay: 550ms; }

.node-1 { --x: 0px; --y: -220px; }
.node-2 { --x: 129px; --y: -178px; }
.node-3 { --x: 209px; --y: -68px; }
.node-4 { --x: 209px; --y: 68px; }
.node-5 { --x: 129px; --y: 178px; }
.node-6 { --x: 0px; --y: 220px; }
.node-7 { --x: -129px; --y: 178px; }
.node-8 { --x: -209px; --y: 68px; }
.node-9 { --x: -209px; --y: -68px; }
.node-10 { --x: -129px; --y: -178px; }

[data-platform="doubao"] { --brand-color: var(--brand-doubao); }
[data-platform="deepseek"] { --brand-color: var(--brand-deepseek); }
[data-platform="wenxin"] { --brand-color: var(--brand-wenxin); }
[data-platform="tongyi"] { --brand-color: var(--brand-tongyi); }
[data-platform="yuanbao"] { --brand-color: var(--brand-yuanbao); }
[data-platform="zhipu"] { --brand-color: var(--brand-zhipu); }
[data-platform="kimi"] { --brand-color: var(--brand-kimi); }
[data-platform="metaso"] { --brand-color: var(--brand-metaso); }
[data-platform="360ai"] { --brand-color: var(--brand-360ai); }
[data-platform="xfyun"] { --brand-color: var(--brand-xfyun); }

.platform-badge {
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  grid-template-rows: 1fr auto;
  padding: 9px 5px 7px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--brand-color) 20%, rgba(255, 255, 255, 0.92));
  border-radius: 8px;
  background: color-mix(in srgb, var(--brand-color) 12%, rgba(255, 255, 255, 0.9));
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.1);
  cursor: default;
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  transition:
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 300ms ease,
    border-color 300ms ease;
}

.platform-badge:hover {
  z-index: 6;
  border-color: var(--brand-color);
  box-shadow: 0 12px 34px color-mix(in srgb, var(--brand-color) 40%, transparent);
  transform: scale(1.25);
}

.platform-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.platform-badge .platform-logo {
  align-self: end;
}

.platform-badge span {
  width: 100%;
  overflow: hidden;
  color: #4f5e72;
  font-size: 9px;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.floating-metric {
  position: absolute;
  z-index: 5;
  display: grid;
  min-width: 136px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.09);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: metric-float 3s ease-in-out infinite;
}

.floating-metric strong {
  color: #3730a3;
  font-size: 18px;
  font-weight: 820;
}

.floating-metric span {
  margin-top: 2px;
  color: #607086;
  font-size: 11px;
}

.metric-one {
  top: 78px;
  right: -18px;
}

.metric-two {
  bottom: 63px;
  left: -13px;
  padding-left: 30px;
  animation-delay: -1.6s;
}

.metric-two .live-dot {
  position: absolute;
  top: 18px;
  left: 14px;
}

.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.13);
}

/* Statistics */
.stats-band {
  position: relative;
  z-index: 4;
  border-top: 1px solid rgba(79, 70, 229, 0.08);
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stats-grid {
  display: grid;
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: 42px 24px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-item {
  position: relative;
  display: grid;
  min-height: 84px;
  place-items: center;
  align-content: center;
  text-align: center;
}

.stat-item + .stat-item::before {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 1px;
  background: var(--line);
  content: "";
}

.stat-item strong {
  background: linear-gradient(120deg, #3730a3, #6d28d9 55%, #0e7490);
  background-clip: text;
  color: transparent;
  font-size: 34px;
  font-weight: 820;
  line-height: 1.1;
}

.stat-item > span {
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

/* Feature grid */
.features-section {
  background:
    linear-gradient(180deg, #fafbfc 0%, #ffffff 46%, #f7fafb 100%);
}

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

.feature-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 418px;
  padding: 28px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #e0e6ed;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.045);
  transition:
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 300ms ease,
    border-color 300ms ease;
}

.feature-card:hover {
  border-color: rgba(79, 70, 229, 0.24);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon,
.step-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 8px;
  background: rgba(79, 70, 229, 0.09);
  color: var(--indigo);
}

.feature-icon svg,
.step-icon svg {
  width: 23px;
  height: 23px;
}

.feature-card h3 {
  margin-top: 20px;
  font-size: 20px;
  font-weight: 740;
  line-height: 1.3;
}

.feature-card > p {
  min-height: 72px;
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
}

.text-link {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 18px;
  color: var(--indigo);
  font-size: 14px;
  font-weight: 700;
}

.text-link svg {
  width: 16px;
  height: 16px;
  transition: transform 180ms ease;
}

.text-link:hover svg {
  transform: translateX(4px);
}

.monitor-visual,
.diagnosis-visual,
.strategy-visual,
.content-visual,
.distribution-visual,
.review-visual {
  position: relative;
  min-height: 102px;
  margin-top: 21px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  padding-top: 18px;
}

.feature-monitor {
  background:
    linear-gradient(145deg, rgba(79, 70, 229, 0.06), transparent 48%),
    #ffffff;
}

.monitor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--ink-soft);
  font-size: 12px;
}

.monitor-head strong {
  color: var(--indigo);
  font-size: 21px;
}

.monitor-line {
  display: block;
  height: 7px;
  margin-top: 9px;
  border-radius: 4px;
  background: #e6eaf0;
}

.monitor-line::after {
  display: block;
  width: var(--line-width);
  height: 100%;
  border-radius: inherit;
  background: var(--line-color);
  content: "";
}

.line-a { --line-width: 76%; --line-color: #4f46e5; }
.line-b { --line-width: 63%; --line-color: #0891b2; }
.line-c { --line-width: 48%; --line-color: #059669; }

.feature-diagnosis {
  background: #f8f6ff;
}

.feature-diagnosis .feature-icon {
  background: rgba(124, 58, 237, 0.1);
  color: var(--violet);
}

.diagnosis-visual {
  display: grid;
  grid-template-columns: 82px 1fr;
  align-items: center;
  gap: 18px;
}

.diagnosis-ring {
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  border: 8px solid rgba(124, 58, 237, 0.12);
  border-top-color: #7c3aed;
  border-right-color: #0891b2;
  border-radius: 50%;
  transform: rotate(22deg);
}

.diagnosis-ring b {
  color: #4c1d95;
  font-size: 17px;
  transform: rotate(-22deg);
}

.diagnosis-visual ul {
  display: grid;
  gap: 8px;
}

.diagnosis-visual li {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #55647a;
  font-size: 12px;
}

.diagnosis-visual li i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #7c3aed;
}

.diagnosis-visual li:nth-child(2) i { background: #0891b2; }
.diagnosis-visual li:nth-child(3) i { background: #059669; }

.feature-strategy {
  background: #f3fbf8;
}

.feature-strategy .feature-icon {
  background: rgba(5, 150, 105, 0.1);
  color: var(--green);
}

.strategy-visual {
  display: grid;
  gap: 6px;
}

.strategy-row {
  display: grid;
  min-height: 26px;
  align-items: center;
  grid-template-columns: 28px 1fr auto;
  color: #5d6c7d;
  font-size: 11px;
}

.strategy-row i {
  color: #8a98aa;
  font-style: normal;
}

.strategy-row b {
  font-weight: 650;
}

.strategy-row em {
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(5, 150, 105, 0.08);
  color: #047857;
  font-size: 9px;
  font-style: normal;
}

.strategy-row.active {
  color: #0f513d;
}

.feature-content {
  border-color: #172239;
  background:
    linear-gradient(145deg, rgba(8, 145, 178, 0.14), transparent 50%),
    #111827;
  color: #ffffff;
}

.feature-content:hover {
  border-color: rgba(8, 145, 178, 0.6);
}

.feature-content .feature-icon {
  background: rgba(255, 255, 255, 0.1);
  color: #67e8f9;
}

.feature-content > p,
.feature-content .text-link {
  color: #bdc9d8;
}

.feature-content .text-link {
  color: #67e8f9;
}

.content-visual {
  border-top-color: rgba(255, 255, 255, 0.12);
}

.content-label {
  color: #a5f3fc;
  font-size: 11px;
}

.content-line {
  display: block;
  height: 7px;
  margin-top: 10px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.16);
}

.content-line-a { width: 88%; }
.content-line-b { width: 72%; }
.content-line-c { width: 54%; }

.typing-cursor {
  position: absolute;
  bottom: 18px;
  left: 56%;
  width: 2px;
  height: 12px;
  background: #67e8f9;
  animation: cursor-blink 1s steps(1) infinite;
}

.feature-distribute {
  background: #fff8f1;
}

.feature-distribute .feature-icon {
  background: rgba(234, 88, 12, 0.1);
  color: var(--orange);
}

.distribution-visual {
  min-height: 110px;
}

.distribution-core,
.distribution-node {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  border: 1px solid rgba(234, 88, 12, 0.2);
  background: #ffffff;
  color: #9a3412;
  font-weight: 700;
}

.distribution-core {
  top: 43px;
  left: 50%;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #ea580c;
  box-shadow: 0 8px 18px rgba(234, 88, 12, 0.2);
  color: #ffffff;
  transform: translateX(-50%);
}

.distribution-node {
  width: 47px;
  height: 27px;
  border-radius: 6px;
  font-size: 9px;
}

.node-web { top: 18px; left: 2%; }
.node-social { top: 57px; right: 1%; }
.node-qa { bottom: 3px; left: 12%; }

.distribution-path {
  position: absolute;
  z-index: 1;
  height: 1px;
  background: rgba(234, 88, 12, 0.3);
  transform-origin: left center;
}

.path-one { top: 48px; left: 16%; width: 37%; transform: rotate(8deg); }
.path-two { top: 60px; left: 54%; width: 31%; transform: rotate(-2deg); }
.path-three { top: 69px; left: 25%; width: 29%; transform: rotate(-17deg); }

.feature-review {
  background:
    linear-gradient(145deg, rgba(8, 145, 178, 0.06), transparent 54%),
    #ffffff;
}

.feature-review .feature-icon {
  background: rgba(8, 145, 178, 0.1);
  color: var(--cyan);
}

.review-visual svg {
  width: 100%;
  height: 72px;
}

.review-area {
  fill: url("#reviewFill");
}

.review-path {
  fill: none;
  stroke: #0891b2;
  stroke-linecap: round;
  stroke-width: 3;
}

.review-visual > span {
  position: absolute;
  bottom: 6px;
  left: 0;
  color: var(--muted);
  font-size: 10px;
}

.review-visual > strong {
  position: absolute;
  right: 0;
  bottom: 5px;
  color: #0e7490;
  font-size: 11px;
}

/* Workflow */
.workflow-section {
  border-top: 1px solid #e5ebf0;
  border-bottom: 1px solid #e5ebf0;
  background: #f1f6f6;
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.workflow-step {
  position: relative;
  min-width: 0;
  min-height: 302px;
  padding: 26px;
  border: 1px solid #dce5e6;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
}

.workflow-step:not(:last-child)::after {
  position: absolute;
  top: 52px;
  right: -27px;
  z-index: 4;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid #d6dfe5;
  border-radius: 50%;
  background: #ffffff;
  color: var(--indigo);
  content: "→";
  font-size: 18px;
  font-weight: 700;
}

.step-number {
  display: block;
  color: rgba(15, 23, 42, 0.15);
  font-size: 44px;
  font-weight: 850;
  line-height: 1;
}

.step-icon {
  width: 42px;
  height: 42px;
  margin-top: 23px;
  background: #edf0ff;
}

.step-icon svg {
  width: 20px;
  height: 20px;
}

.workflow-step h3 {
  margin-top: 18px;
  font-size: 19px;
  font-weight: 740;
}

.workflow-step p {
  margin-top: 9px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.68;
}

/* Platforms */
.platforms-section {
  background: #ffffff;
}

.platform-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}

.coverage-status {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 9px;
  padding: 0 14px;
  border: 1px solid #dce4ec;
  border-radius: 8px;
  background: #f8fafc;
  color: #536278;
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.platform-card {
  display: grid;
  min-width: 0;
  min-height: 108px;
  align-items: center;
  padding: 18px;
  border: 1px solid #e0e6ed;
  border-radius: 8px;
  background: #ffffff;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 13px;
  transition:
    transform 260ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 260ms ease,
    border-color 260ms ease;
}

.platform-card:hover {
  border-color: color-mix(in srgb, var(--brand-color) 42%, #e0e6ed);
  box-shadow: 0 10px 28px color-mix(in srgb, var(--brand-color) 20%, transparent);
  transform: translateY(-4px);
}

.platform-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--brand-color) 20%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--brand-color) 12%, #ffffff);
  transition:
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 300ms ease,
    border-color 300ms ease;
}

.platform-card:hover .platform-mark {
  border-color: color-mix(in srgb, var(--brand-color) 60%, transparent);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--brand-color) 30%, transparent);
  transform: scale(1.15);
}

[data-platform="kimi"] .platform-badge,
.platform-card[data-platform="kimi"] .platform-mark {
  border-color: rgba(255, 255, 255, 0.16);
  background: #1a1a1a;
}

.platform-card h3 {
  overflow-wrap: anywhere;
  font-size: 14px;
  font-weight: 720;
  line-height: 1.25;
}

.platform-card p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.status-label {
  grid-column: 2;
  width: fit-content;
  margin-top: -12px;
  color: #047857;
  font-size: 10px;
  font-weight: 650;
}

.status-label::before {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 5px;
  border-radius: 50%;
  background: #10b981;
  content: "";
  vertical-align: 1px;
}

/* Advantages */
.advantages-section {
  border-top: 1px solid #e6ebf1;
  background: linear-gradient(180deg, #f8fafc 0%, #eef3fb 100%);
}

#advantages-title span {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  background-clip: text;
  color: transparent;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.advantage-card {
  display: flex;
  min-width: 0;
  min-height: 282px;
  align-items: center;
  padding: 30px 26px;
  flex-direction: column;
  border: 1px solid rgba(213, 222, 233, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 8px 28px rgba(79, 70, 229, 0.06);
  text-align: center;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition:
    transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 380ms ease,
    border-color 380ms ease;
}

.advantage-card:hover {
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: 0 16px 44px rgba(79, 70, 229, 0.14);
  transform: translateY(-4px);
}

.advantage-icon,
.banner-icon {
  display: grid;
  place-items: center;
  border: 1px solid rgba(79, 70, 229, 0.1);
  background: linear-gradient(145deg, rgba(79, 70, 229, 0.11), rgba(8, 145, 178, 0.09));
  color: #4f46e5;
}

.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: 8px;
}

.advantage-icon svg {
  width: 26px;
  height: 26px;
}

.advantage-kpi {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  justify-content: center;
  margin-top: 16px;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(79, 70, 229, 0.08);
  color: #4f46e5;
  font-size: 12px;
  font-weight: 720;
}

.advantage-card h3 {
  margin-top: 12px;
  font-size: 19px;
  font-weight: 750;
}

.advantage-card p {
  margin-top: 9px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.68;
}

.advantage-banner {
  margin-top: 40px;
  padding: 44px 32px;
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-radius: 8px;
  background:
    linear-gradient(120deg, rgba(79, 70, 229, 0.07), rgba(8, 145, 178, 0.06)),
    rgba(255, 255, 255, 0.72);
  text-align: center;
  transition-delay: 400ms;
}

.banner-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto;
  border-radius: 50%;
}

.banner-icon svg {
  width: 23px;
  height: 23px;
}

.advantage-banner h3 {
  margin-top: 17px;
  color: var(--ink);
  font-size: 25px;
  font-weight: 770;
}

.advantage-banner h3 span {
  margin-left: 5px;
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  background-clip: text;
  color: transparent;
}

.advantage-banner p {
  margin-top: 13px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.advantage-banner strong {
  color: #4f46e5;
  font-weight: 720;
}

.advantage-banner .button {
  margin-top: 27px;
}

/* Closing call to action */
.final-cta {
  position: relative;
  overflow: hidden;
  padding: 98px 24px;
  background:
    linear-gradient(120deg, rgba(8, 145, 178, 0.15), transparent 38%),
    linear-gradient(135deg, #3b176b 0%, #4f46e5 58%, #155e75 100%);
  color: #ffffff;
}

.cta-radial {
  position: absolute;
  top: 50%;
  left: 78%;
  width: 620px;
  height: 620px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  box-shadow:
    0 0 0 80px rgba(255, 255, 255, 0.045),
    0 0 0 160px rgba(255, 255, 255, 0.025);
  transform: translate(-50%, -50%);
}

.cta-radial::before,
.cta-radial::after {
  position: absolute;
  border-radius: 50%;
  content: "";
}

.cta-radial::before {
  inset: 80px;
  border: 1px dashed rgba(255, 255, 255, 0.17);
  animation: orbit-spin 30s linear infinite;
}

.cta-radial::after {
  inset: 180px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-shell {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-shell > p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 650;
}

.cta-shell h2 {
  max-width: 780px;
  margin: 13px auto 0;
  font-size: 42px;
  font-weight: 780;
  line-height: 1.2;
}

.cta-shell > span {
  display: block;
  margin-top: 15px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 17px;
}

.button-light {
  margin-top: 30px;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.2);
  color: #4338ca;
}

.button-light:hover {
  box-shadow: 0 17px 36px rgba(15, 23, 42, 0.26);
}

/* Footer */
.site-footer {
  padding: 66px 24px 28px;
  background: #0d1424;
  color: #ffffff;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(310px, 0.95fr) minmax(0, 2fr);
  gap: 64px;
  align-items: start;
}

.footer-contact-card {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.contact-card-heading > span {
  color: #8293aa;
  font-size: 11px;
  font-weight: 720;
  text-transform: uppercase;
}

.contact-card-heading h2 {
  margin-top: 4px;
  font-size: 21px;
  font-weight: 760;
}

.wechat-contact {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 22px;
}

.wechat-qr-frame {
  flex: 0 0 auto;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  transition:
    transform 300ms ease,
    box-shadow 300ms ease;
}

.wechat-qr-frame:hover {
  box-shadow: 0 10px 28px rgba(99, 102, 241, 0.2);
  transform: translateY(-2px);
}

.wechat-qr-frame img {
  width: 140px;
  height: 140px;
  border-radius: 6px;
  object-fit: cover;
}

.wechat-copy h3 {
  font-size: 14px;
  font-weight: 700;
}

.wechat-copy p {
  margin-top: 5px;
  color: #8fa0b7;
  font-size: 12px;
  line-height: 1.55;
}

.contact-divider {
  height: 1px;
  margin: 22px 0 18px;
  background: rgba(255, 255, 255, 0.1);
}

.service-phone {
  display: grid;
  justify-items: start;
}

.service-label,
.service-hours {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #8293aa;
  font-size: 12px;
}

.service-label svg,
.service-hours svg {
  width: 14px;
  height: 14px;
}

.service-phone > a {
  margin-top: 5px;
  background: linear-gradient(135deg, #818cf8, #a78bfa, #67e8f9);
  background-clip: text;
  color: transparent;
  font-size: 24px;
  font-weight: 820;
  line-height: 1.2;
  transition: filter 200ms ease;
}

.service-phone > a:hover {
  filter: brightness(1.2);
}

.service-hours {
  margin-top: 8px;
  color: #a8b5c7;
}

.footer-directory {
  min-width: 0;
}

.brand-footer .brand-name {
  background: none;
  color: #ffffff;
}

.footer-brand > p {
  max-width: 310px;
  margin-top: 20px;
  color: #8fa0b7;
  font-size: 13px;
  line-height: 1.8;
}

.footer-directory .footer-brand {
  margin-bottom: 30px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.footer-links > div {
  display: grid;
  align-content: start;
  gap: 11px;
}

.footer-links h3 {
  margin-bottom: 5px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 720;
}

.footer-links a,
.footer-links span {
  width: fit-content;
  color: #8393a9;
  font-size: 13px;
  line-height: 1.55;
  transition: color 180ms ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-links span {
  color: #8393a9;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #66768c;
  font-size: 12px;
}

.registration-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.registration-links a {
  color: #7e8da1;
}

.registration-links a:hover {
  color: #ffffff;
}

@keyframes orbit-spin {
  to { transform: rotate(360deg); }
}

@keyframes orbit-spin-reverse {
  to { transform: rotate(-360deg); }
}

@keyframes core-pulse {
  0%,
  100% {
    box-shadow:
      0 0 0 10px rgba(255, 255, 255, 0.55),
      0 20px 56px rgba(79, 70, 229, 0.28);
  }
  50% {
    box-shadow:
      0 0 0 15px rgba(255, 255, 255, 0.35),
      0 24px 66px rgba(79, 70, 229, 0.38);
  }
}

@keyframes metric-float {
  0%,
  100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes cursor-blink {
  0%,
  48% { opacity: 1; }
  49%,
  100% { opacity: 0; }
}

@media (max-width: 1279px) {
  .hero-shell {
    grid-template-columns: minmax(0, 1fr) 410px;
    gap: 10px;
  }

  .hero-copy h1 {
    font-size: 48px;
  }

  .hero-description {
    font-size: 17px;
  }

  .hero-visual {
    min-height: 500px;
  }

  .platform-orbit {
    transform: translate(-50%, -50%) scale(0.7);
  }

  .metric-one {
    right: 0;
  }

  .metric-two {
    left: 0;
  }

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

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

  .workflow-step:not(:last-child)::after {
    display: none;
  }

  .platform-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .footer-top {
    gap: 52px;
  }
}

@media (max-width: 920px) {
  .desktop-nav {
    gap: 20px;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1fr) 340px;
    padding-top: 112px;
  }

  .hero-copy h1 {
    font-size: 42px;
  }

  .platform-orbit {
    transform: translate(-50%, -50%) scale(0.64);
  }

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

@media (max-width: 767px) {
  :root {
    --nav-height: 64px;
  }

  html {
    scroll-padding-top: 76px;
  }

  .section {
    padding: 76px 18px;
  }

  .section-heading {
    margin-bottom: 36px;
    text-align: left;
  }

  .section-heading h2,
  .platform-heading h2 {
    font-size: 29px;
  }

  .section-heading p,
  .platform-heading p {
    font-size: 15px;
  }

  .nav-shell {
    grid-template-columns: 1fr auto;
    padding: 0 18px;
  }

  .desktop-nav,
  .login-link,
  .nav-actions > .button {
    display: none;
  }

  .nav-actions {
    gap: 0;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .mobile-menu {
    position: absolute;
    top: 70px;
    right: 14px;
    left: 14px;
    display: grid;
    padding: 12px;
    border: 1px solid #dce3eb;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-md);
    gap: 2px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
  }

  .mobile-menu[hidden] {
    display: none;
  }

  .mobile-menu > a:not(.button) {
    min-height: 44px;
    padding: 0 12px;
    border-radius: 6px;
    color: #334155;
    font-size: 15px;
    font-weight: 650;
    line-height: 44px;
  }

  .mobile-menu > a:not(.button):hover {
    background: #f2f5f8;
    color: var(--indigo);
  }

  .mobile-menu .button {
    margin-top: 7px;
  }

  .hero-section,
  .hero-shell {
    min-height: 0;
  }

  .hero-backdrop {
    height: 760px;
    object-position: 70% center;
    opacity: 0.72;
  }

  .hero-wash {
    background:
      linear-gradient(180deg, rgba(250, 251, 252, 0.96) 4%, rgba(250, 251, 252, 0.78) 48%, #fafbfc 92%),
      linear-gradient(90deg, rgba(250, 251, 252, 0.95), rgba(250, 251, 252, 0.16));
  }

  .hero-shell {
    grid-template-columns: 1fr;
    padding: 96px 18px 12px;
    gap: 22px;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-kicker {
    margin-bottom: 17px;
    font-size: 13px;
  }

  .hero-copy h1 {
    font-size: 36px;
    line-height: 1.12;
  }

  .hero-description {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.7;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 25px;
  }

  .button-large {
    min-height: 50px;
    padding: 0 16px;
    font-size: 14px;
  }

  .trust-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px;
    font-size: 11px;
  }

  .trust-list li {
    min-width: 0;
    white-space: nowrap;
  }

  .hero-visual {
    min-height: 225px;
  }

  .platform-orbit {
    position: relative;
    top: auto;
    left: auto;
    display: grid;
    width: 100%;
    height: auto;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    transform: none;
  }

  .orbit-rings,
  .floating-metric {
    display: none;
  }

  .orbit-core {
    position: relative;
    top: auto;
    left: auto;
    width: 80px;
    height: 80px;
    margin: 0 auto 7px;
    grid-column: 1 / -1;
    transform: none;
  }

  .orbit-core strong {
    font-size: 15px;
  }

  .orbit-core > span:last-child {
    font-size: 8px;
  }

  .orbit-node,
  .motion-ready:not(.reduced-motion) .orbit-node,
  .motion-ready.hero-ready:not(.reduced-motion) .orbit-node {
    position: static;
    display: grid;
    opacity: 1;
    place-items: center;
    transform: none;
  }

  .platform-badge {
    width: 100%;
    max-width: 61px;
    height: 60px;
    padding: 8px 3px 6px;
  }

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

  .platform-badge .platform-logo {
    width: 27px;
    height: 27px;
  }

  .platform-badge span {
    font-size: 8px;
  }

  .stats-grid {
    padding: 18px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .stat-item {
    min-height: 94px;
  }

  .stat-item strong {
    font-size: 29px;
  }

  .stat-item:nth-child(2)::before {
    display: block;
  }

  .stat-item:nth-child(3)::before {
    top: 0;
    right: 18px;
    bottom: auto;
    left: 18px;
    width: auto;
    height: 1px;
  }

  .stat-item:nth-child(4)::before {
    top: 0;
    right: 18px;
    bottom: auto;
    left: 18px;
    width: auto;
    height: 1px;
  }

  .feature-grid,
  .workflow-list,
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 400px;
    padding: 24px;
  }

  .feature-card > p {
    min-height: 0;
  }

  .workflow-step {
    min-height: 0;
    padding: 24px;
  }

  .platform-heading {
    display: grid;
    align-items: start;
    margin-bottom: 34px;
  }

  .coverage-status {
    width: fit-content;
  }

  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
  }

  .platform-card {
    min-height: 132px;
    padding: 13px 7px;
    justify-items: center;
    grid-template-columns: 1fr;
    gap: 7px;
    text-align: center;
  }

  .platform-card > div {
    min-width: 0;
  }

  .platform-card h3 {
    min-height: 31px;
    display: grid;
    align-items: center;
    font-size: 12px;
  }

  .platform-card p {
    display: none;
  }

  .status-label {
    grid-column: auto;
    margin-top: -3px;
    font-size: 9px;
  }

  .advantage-card {
    min-height: 0;
    padding: 26px 22px;
  }

  .advantage-banner {
    margin-top: 28px;
    padding: 34px 20px;
  }

  .advantage-banner h3 {
    font-size: 22px;
  }

  .advantage-banner p br {
    display: none;
  }

  .final-cta {
    padding: 76px 18px;
  }

  .cta-radial {
    left: 90%;
    width: 430px;
    height: 430px;
  }

  .cta-shell h2 {
    font-size: 31px;
  }

  .cta-shell > span {
    font-size: 15px;
  }

  .site-footer {
    padding: 54px 18px 24px;
  }

  .footer-top {
    gap: 42px;
  }

  .footer-contact-card {
    padding: 24px;
  }

  .wechat-contact {
    align-items: flex-start;
  }

  .footer-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 24px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .registration-links {
    justify-content: flex-start;
  }
}

@media (max-width: 390px) {
  .hero-copy h1 {
    font-size: 34px;
  }

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

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

  .platform-badge span {
    font-size: 7px;
  }

  .wechat-contact {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }

  .service-phone {
    justify-items: center;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header.is-scrolled,
  .site-header.menu-open,
  .platform-badge,
  .floating-metric,
  .stats-band,
  .advantage-card,
  .mobile-menu {
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .motion-ready .reveal,
  .motion-ready .reveal.visible,
  .motion-ready:not(.reduced-motion) .orbit-node,
  .motion-ready.hero-ready:not(.reduced-motion) .orbit-node {
    opacity: 1;
    transform: none;
  }
}