/* ===========================================================================
   景禾网络科技 · 技术服务门户
   =========================================================================== */

:root {
  color-scheme: light;

  --page: #f7faf9;
  --page-deep: #eef4f2;
  --surface: #ffffff;
  --surface-soft: #f1f6f4;
  --surface-glass: rgba(255, 255, 255, 0.78);
  --ink: #0c1d1a;
  --ink-soft: #40605b;
  --ink-mute: #6c8681;
  --line: rgba(15, 92, 85, 0.12);
  --line-strong: rgba(15, 92, 85, 0.22);
  --accent: #12766c;
  --accent-deep: #0f5c55;
  --accent-bright: #1f978b;
  --accent-soft: #e6f4f1;
  --accent-line: #c2e4dc;
  --signal-dark: #071816;
  --signal-mid: #0d2a26;
  --signal-ink: #ebfff8;
  --signal-soft: rgba(235, 255, 248, 0.68);
  --signal-line: rgba(127, 216, 196, 0.19);
  --shadow-sm: 0 1px 2px rgba(12, 29, 26, 0.05);
  --shadow-md: 0 12px 32px -18px rgba(12, 45, 41, 0.28);
  --shadow-lg: 0 32px 80px -44px rgba(12, 45, 41, 0.42);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shell: 1200px;
  --header-height: 72px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --fast: 0.16s var(--ease-out);
  --base: 0.3s var(--ease-out);
  --slow: 0.68s var(--ease-out);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

body[data-theme="dim"] {
  color-scheme: dark;

  --page: #0b1614;
  --page-deep: #081210;
  --surface: #10201d;
  --surface-soft: #162926;
  --surface-glass: rgba(11, 22, 20, 0.76);
  --ink: #e9f4f1;
  --ink-soft: #a6c3bd;
  --ink-mute: #7b9a94;
  --line: rgba(127, 216, 196, 0.14);
  --line-strong: rgba(127, 216, 196, 0.26);
  --accent: #5ec9b4;
  --accent-deep: #7fd8c4;
  --accent-bright: #7fd8c4;
  --accent-soft: #14322d;
  --accent-line: #235c53;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 14px 34px -20px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 34px 84px -46px rgba(0, 0, 0, 0.82);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--base), color var(--base);
}

/* 全页 SVG 噪点纹理——消除 AI 平板感 */
body::after {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background-image: url("noise.svg");
  background-repeat: repeat;
  background-size: 200px 200px;
  content: "";
  opacity: 0.06;
  mix-blend-mode: soft-light;
}

body[data-theme="dim"]::after {
  opacity: 0.09;
  mix-blend-mode: soft-light;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
}

h2 {
  letter-spacing: -0.02em;
}

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

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

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

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

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

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--accent-deep);
  color: #ffffff;
  font-size: 14px;
  transition: top var(--fast);
}

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

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

.icon-sprite symbol,
.ui-icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ui-icon {
  width: 1em;
  height: 1em;
}

.trailing-icon {
  display: inline-flex;
  align-items: center;
  font-size: 0.95em;
  transition: transform var(--fast);
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow::before {
  display: inline-block;
  width: 26px;
  height: 1px;
  margin-right: 12px;
  vertical-align: 0.3em;
  background: currentColor;
  content: "";
  opacity: 0.55;
}

.section-lead {
  color: var(--ink-soft);
  font-size: 16px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background-color var(--base), border-color var(--base), box-shadow var(--base);
}

.site-header.is-scrolled {
  background: var(--surface-glass);
  box-shadow: var(--shadow-sm);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
}

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

.brand-emblem {
  display: grid;
  width: 26px;
  height: 26px;
  padding: 2px;
  gap: 2px;
  grid-template-columns: repeat(2, 1fr);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent-deep), var(--accent-bright));
  box-shadow: var(--shadow-sm);
}

.brand-emblem span {
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.9);
  transition: opacity var(--base), transform var(--base);
}

.brand-emblem span:nth-child(2) {
  opacity: 0.62;
}

.brand-emblem span:nth-child(3) {
  opacity: 0.4;
}

.brand-emblem span:nth-child(4) {
  opacity: 0.82;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 16px;
  font-weight: 600;
}

.brand-text em {
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 10px;
  font-style: normal;
  letter-spacing: 0;
}

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

.primary-nav a {
  position: relative;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: var(--ink-soft);
  font-size: 14px;
  transition: color var(--fast), background-color var(--fast);
}

.primary-nav a.is-active {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

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

.theme-toggle,
.menu-toggle {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink-soft);
  transition: color var(--fast), border-color var(--fast), transform var(--fast);
}

.theme-toggle-mark {
  line-height: 1;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--accent-deep);
  color: #ffffff;
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 500;
  transition: transform var(--fast), box-shadow var(--base), background-color var(--base);
}

body[data-theme="dim"] .header-cta,
body[data-theme="dim"] .hero-button.is-primary,
body[data-theme="dim"] .contact-button.is-primary,
body[data-theme="dim"] .form-submit {
  color: #06201c;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--ink);
  transition: transform var(--base), opacity var(--base);
}

.menu-toggle.is-open span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.menu-toggle.is-open span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-menu {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 32px 20px;
  background: var(--surface);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--base), transform var(--base);
}

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

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu a {
  padding: 12px 4px;
  color: var(--ink-soft);
  font-size: 15px;
}

/* Hero */

.hero {
  position: relative;
  display: flex;
  min-height: min(88vh, 860px);
  align-items: center;
  isolation: isolate;
  overflow: hidden;
  padding: 96px 0 120px;
  background:
    radial-gradient(120% 90% at 12% 8%, var(--accent-soft) 0%, transparent 58%),
    linear-gradient(180deg, var(--page) 0%, var(--page-deep) 100%);
}

.hero-canvas {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0;
  transition: opacity 1.1s var(--ease-out);
}

.hero-canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-canvas.is-liquid-ready {
  opacity: 0.9;
}

body[data-theme="dim"] .hero-canvas.is-liquid-ready {
  opacity: 0.72;
}

.hero-canvas.is-liquid-loading,
.hero-canvas.is-liquid-static,
.hero-canvas.is-liquid-fallback {
  opacity: 0;
}

.hero.is-pointer-active .hero-canvas.is-liquid-ready {
  opacity: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 28px;
  padding: 7px 16px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-pill);
  background: var(--surface-glass);
  color: var(--accent-deep);
  font-size: 13px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 62px;
}

.hero-title-main {
  display: block;
}

.hero-title-motion {
  position: relative;
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.16em;
  color: var(--accent-deep);
}

.hero-focus-word {
  display: inline-block;
  opacity: 0.55;
  filter: blur(4px);
  transition: filter var(--slow), opacity var(--slow);
}

.hero-focus-word.is-active,
.hero-title.is-static .hero-focus-word {
  opacity: 1;
  filter: blur(0);
}

.hero-focus-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
  transition: transform var(--slow), width var(--slow), height var(--slow), opacity var(--base);
}

.hero-focus-frame.is-ready {
  opacity: 1;
}

.hero-title.is-static .hero-focus-frame {
  display: none;
}

.hero-focus-frame .corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--accent);
  opacity: 0.8;
}

.hero-focus-frame .corner-tl {
  top: -6px;
  left: -8px;
  border-right: 0;
  border-bottom: 0;
}

.hero-focus-frame .corner-tr {
  top: -6px;
  right: -8px;
  border-bottom: 0;
  border-left: 0;
}

.hero-focus-frame .corner-bl {
  bottom: -6px;
  left: -8px;
  border-top: 0;
  border-right: 0;
}

.hero-focus-frame .corner-br {
  right: -8px;
  bottom: -6px;
  border-top: 0;
  border-left: 0;
}

.hero-description {
  max-width: 620px;
  margin-bottom: 36px;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-button,
.contact-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  transition: transform var(--fast), border-color var(--base), box-shadow var(--base), background-color var(--base), color var(--base);
}

.hero-button.is-primary,
.contact-button.is-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent-deep), var(--accent-bright));
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.hero-fade {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 0;
  height: 160px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, var(--page) 88%);
}

/* Shared section structure */

.section {
  position: relative;
  padding: 120px 0;
}

.section-head {
  position: relative;
  display: grid;
  max-width: none;
  margin: 0 0 68px;
  padding-bottom: 0;
  align-items: end;
  gap: 18px 56px;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  text-align: left;
}

.section-head .eyebrow {
  grid-column: 1;
  grid-row: 1;
  margin-bottom: 0;
}

.section-head h2 {
  grid-column: 1;
  grid-row: 2;
  font-size: 44px;
  background: linear-gradient(145deg, var(--ink) 0%, var(--accent-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-head .section-lead {
  max-width: 44ch;
  padding-bottom: 5px;
  padding-left: 14px;
  border-left: 1.5px solid var(--accent-line);
  grid-column: 2;
  grid-row: 2;
}

/* Capability field */

.services-section {
  position: relative;
  padding-top: 112px;
  padding-bottom: 128px;
  overflow: hidden;
}

/* 服务区右上角湖光辉光球 */
.services-section::before {
  position: absolute;
  top: -180px;
  right: -220px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 151, 139, 0.18) 0%, transparent 70%);
  content: "";
  pointer-events: none;
}

/* 服务区左下角次级辉光 */
.services-section::after {
  position: absolute;
  bottom: -120px;
  left: -160px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 151, 139, 0.09) 0%, transparent 68%);
  content: "";
  pointer-events: none;
}

.capability-layout {
  display: grid;
  align-items: center;
  gap: 72px;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.capability-visual {
  position: relative;
  display: grid;
  min-height: 560px;
  place-items: center;
  isolation: isolate;
}

.capability-visual::before {
  position: absolute;
  z-index: -2;
  inset: 8% 4%;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-position: center;
  background-size: 34px 34px;
  content: "";
  opacity: 0.42;
}

.capability-visual::after {
  position: absolute;
  z-index: -1;
  width: 1px;
  height: 76%;
  background: linear-gradient(180deg, transparent, var(--accent-line), transparent);
  content: "";
  opacity: 0.7;
}

.capability-field {
  width: min(100%, 560px);
  overflow: visible;
}

.field-grid {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
}

.field-scan {
  color: var(--accent);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  transform-box: view-box;
  transform-origin: 280px 280px;
  animation: field-sweep 12s linear infinite;
}

.field-scan circle {
  fill: var(--accent-bright);
  stroke: none;
}

.field-node {
  color: var(--ink-mute);
  cursor: default;
  transition: color var(--base), opacity var(--base);
}

.field-node .node-orbit {
  fill: var(--page);
  stroke: currentColor;
  stroke-width: 1.2;
  transition: fill var(--base), stroke var(--base), stroke-width var(--base);
}

.field-node .node-core {
  fill: currentColor;
  stroke: none;
  transition: fill var(--base), transform var(--base);
  transform-box: fill-box;
  transform-origin: center;
}

.field-node text {
  fill: currentColor;
  font-family: var(--mono);
  font-size: 11px;
  transition: fill var(--base);
}

.field-node.is-active {
  color: var(--accent);
}

.field-node.is-active .node-orbit {
  fill: var(--accent-soft);
  stroke: var(--accent);
  stroke-width: 1.8;
}

.field-node.is-active .node-core {
  fill: var(--accent-bright);
  transform: scale(1.35);
}

.capability-core {
  position: absolute;
  display: flex;
  width: 190px;
  min-height: 190px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  box-shadow: 0 16px 42px -30px rgba(15, 92, 85, 0.56);
  text-align: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.capability-core span,
.capability-core small {
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 10px;
}

.capability-core strong {
  margin: 9px 0 7px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
}

.capability-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.capability-item {
  position: relative;
  display: grid;
  min-width: 0;
  padding: 18px 20px 18px 16px;
  gap: 16px;
  cursor: pointer;
  grid-template-columns: 30px 30px minmax(0, 1fr) 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: color var(--fast), background-color var(--fast), border-color var(--base), box-shadow var(--base), transform var(--fast);
}

.capability-index {
  padding-top: 2px;
  color: var(--accent-deep);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

.capability-icon {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  color: var(--ink-mute);
  font-size: 18px;
  transition: color var(--fast), transform var(--fast);
}

.capability-item h3 {
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 17px;
  letter-spacing: -0.01em;
  transition: color var(--fast);
}

.capability-item p {
  max-width: 47ch;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}

.capability-marker {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
}

.capability-marker::before,
.capability-marker::after,
.capability-marker span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ink-mute);
  content: "";
  opacity: 0.38;
  transition: background-color var(--fast), opacity var(--fast), transform var(--fast);
}

.capability-marker::before {
  transform: translateX(-7px);
}

.capability-marker::after {
  transform: translateX(7px);
}

.capability-item.is-active .capability-index,
.capability-item.is-active .capability-icon,
.capability-item.is-active h3 {
  color: var(--accent-deep);
}

.capability-item.is-active .capability-marker::before,
.capability-item.is-active .capability-marker::after,
.capability-item.is-active .capability-marker span {
  background: var(--accent);
  opacity: 1;
}

.capability-item.is-active .capability-marker span {
  transform: scale(1.45);
}

.capability-item.is-active {
  border-color: var(--accent-line);
  background: linear-gradient(135deg, var(--accent-soft) 0%, transparent 68%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent-line) 55%, transparent),
    0 8px 32px -8px rgba(31, 151, 139, 0.24);
}

/* Delivery track */

.delivery-section {
  position: relative;
  overflow: hidden;
  padding-top: 126px;
  padding-bottom: 134px;
  background: var(--signal-dark);
  color: var(--signal-ink);
}

.delivery-section::before {
  display: none;
}

.delivery-atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(127, 216, 196, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(127, 216, 196, 0.04) 1px, transparent 1px);
  background-position: center;
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
}

.delivery-inner {
  position: relative;
}

.delivery-head {
  max-width: 680px;
  margin-bottom: 72px;
}

.delivery-head .eyebrow {
  color: #7fd8c4;
}

.delivery-head h2 {
  margin-bottom: 20px;
  font-size: 48px;
  background: linear-gradient(145deg, #ffffff 0%, #7fd8c4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.delivery-head .section-lead {
  max-width: 50ch;
  color: var(--signal-soft);
}

.delivery-track {
  position: relative;
  min-height: 330px;
  padding-top: 142px;
}

.delivery-path {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  height: 180px;
  overflow: visible;
}

.delivery-path-base,
.delivery-path-progress,
.delivery-path-signal {
  fill: none;
  stroke-linecap: round;
}

.delivery-path-base {
  stroke: rgba(235, 255, 248, 0.16);
  stroke-width: 1.2;
}

.delivery-path-progress {
  stroke: #7fd8c4;
  stroke-width: 1.45;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.3s var(--ease-in-out) 0.12s;
}

.delivery-path-signal {
  opacity: 0;
  stroke: #d9fff4;
  stroke-width: 2.4;
  stroke-dasharray: 0.016 0.09;
}

.delivery-track.is-visible .delivery-path-progress {
  stroke-dashoffset: 0;
}

.delivery-track.is-visible .delivery-path-signal {
  opacity: 0.92;
  animation: signal-travel 2.9s linear 1.35s infinite;
}

.delivery-node {
  opacity: 0.4;
  transition: opacity var(--base);
}

.delivery-node circle:first-child {
  fill: var(--signal-dark);
  stroke: #7fd8c4;
  stroke-width: 1.5;
  transform-box: fill-box;
  transform-origin: center;
  transform: scale(0.72);
  transition: transform 0.5s var(--ease-out), fill var(--base);
}

.delivery-node circle:last-child {
  fill: #7fd8c4;
}

.delivery-track.is-visible .delivery-node {
  opacity: 1;
}

.delivery-track.is-visible .delivery-node circle:first-child {
  fill: var(--signal-mid);
  transform: scale(1);
}

.delivery-node.node-two {
  transition-delay: 0.32s;
}

.delivery-node.node-three {
  transition-delay: 0.62s;
}

.delivery-steps {
  display: grid;
  gap: 48px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.delivery-step {
  position: relative;
  min-width: 0;
  padding: 28px 24px;
  border: 1px solid rgba(127, 216, 196, 0.22);
  border-radius: var(--radius-md);
  background: rgba(127, 216, 196, 0.05);
}

.delivery-step:nth-child(2) {
  transform: translateY(-48px);
}

.delivery-step::before {
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(127, 216, 196, 0.5), transparent);
  content: "";
}

.flow-index,
.delivery-code {
  display: block;
  color: #7fd8c4;
  font-family: var(--mono);
  font-size: 12px;
}

.flow-index {
  margin-bottom: 16px;
  color: rgba(127, 216, 196, 0.55);
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1;
}

.delivery-code {
  margin-bottom: 8px;
  letter-spacing: 0.07em;
}

.delivery-step h3 {
  margin-bottom: 11px;
  color: var(--signal-ink);
  font-size: 20px;
  letter-spacing: -0.01em;
}

.delivery-step p {
  max-width: 33ch;
  color: var(--signal-soft);
  font-size: 15px;
}

/* Terms ledger */

.terms-section {
  position: relative;
  padding-top: 124px;
  padding-bottom: 132px;
  overflow: hidden;
}

/* 规约区中央偏左的湖光光晕 */
.terms-section::before {
  position: absolute;
  top: 50%;
  left: -200px;
  transform: translateY(-50%);
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 151, 139, 0.12) 0%, transparent 68%);
  content: "";
  pointer-events: none;
}

.terms-ledger {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  counter-reset: terms-counter;
}

.terms-entry {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 30px 26px 28px;
  border: 1px solid var(--accent-line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--page-deep) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  counter-increment: terms-counter;
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

/* 卡顶发光细线 */
.terms-entry::before {
  position: absolute;
  top: 0;
  left: 18%;
  right: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent-bright) 50%, transparent 100%);
  content: "";
  opacity: 0.55;
}

/* 幽灵序号装饰 */
.terms-entry::after {
  position: absolute;
  right: 14px;
  bottom: -10px;
  color: var(--accent-deep);
  content: counter(terms-counter, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 96px;
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 1;
  opacity: 0.06;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.terms-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.terms-heading {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.terms-icon {
  display: inline-flex;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 16px;
  margin-top: 2px;
}

.terms-heading h3 {
  font-size: 17px;
  letter-spacing: -0.02em;
  line-height: 1.35;
  background: linear-gradient(135deg, var(--ink) 25%, var(--accent-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.terms-copy {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.terms-copy p {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}

.terms-state {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 7px;
  padding: 5px 10px 4px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.terms-state i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* Contact signal and local mail tool */

.contact-section {
  position: relative;
  overflow: hidden;
  padding-top: 122px;
  padding-bottom: 132px;
  background:
    linear-gradient(90deg, transparent 0%, var(--page-deep) 50%, transparent 100%),
    var(--page);
}

/* 联系区右下角辉光 */
.contact-section::before {
  position: absolute;
  bottom: -180px;
  right: -180px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 151, 139, 0.15) 0%, transparent 66%);
  content: "";
  pointer-events: none;
}

.contact-inner {
  display: grid;
  align-items: start;
  gap: 80px;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
}

.contact-copy {
  min-width: 0;
  padding-top: 10px;
}

.contact-copy h2 {
  margin-bottom: 18px;
  font-size: 38px;
  background: linear-gradient(145deg, var(--ink) 0%, var(--accent-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-copy .section-lead {
  max-width: 44ch;
  font-size: 15.5px;
}

.contact-signal {
  position: relative;
  height: 150px;
  margin: 42px 0 28px;
}

.contact-signal svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.contact-signal-base,
.contact-signal-trace {
  fill: none;
  stroke-linecap: round;
}

.contact-signal-base {
  stroke: var(--line-strong);
  stroke-width: 1.2;
}

.contact-signal-trace {
  stroke: var(--accent);
  stroke-width: 1.8;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.2s var(--ease-in-out) 0.15s;
}

.contact-copy.is-visible .contact-signal-trace {
  stroke-dashoffset: 0;
}

.contact-signal circle {
  fill: var(--accent);
}

.contact-signal-icon {
  position: absolute;
  top: 50%;
  right: -2px;
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--accent-deep);
  font-size: 18px;
  transform: translateY(-50%);
}

.contact-facts {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-fact {
  display: grid;
  gap: 16px;
  padding: 3px 0;
  grid-template-columns: 88px minmax(0, 1fr);
}

.contact-fact[hidden] {
  display: none;
}

.contact-fact dt {
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-fact dd {
  color: var(--ink-soft);
  font-size: 15px;
  word-break: break-word;
}

.contact-email {
  border-bottom: 1px solid transparent;
  color: var(--accent-deep);
  font-size: 19px;
  font-weight: 600;
  transition: border-color var(--fast), color var(--fast);
  word-break: break-all;
}

.contact-actions {
  margin: 28px 0 16px;
}

.contact-button {
  padding: 11px 22px;
  font-size: 14px;
}

.contact-button.is-copied {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.contact-note {
  color: var(--ink-mute);
  font-size: 13px;
}

.contact-form-card {
  position: relative;
  overflow: hidden;
  padding: 0 32px 30px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.contact-form-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent-bright), transparent 78%);
  content: "";
}

.form-toolbar {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 11px;
}

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

.form-toolbar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 25px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.6;
  transition: border-color var(--fast), background-color var(--fast), box-shadow var(--fast);
  -webkit-appearance: none;
  appearance: none;
}

.field textarea {
  min-height: 132px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-mute);
}

.field input:focus-visible,
.field textarea:focus-visible,
.field select:focus-visible {
  border-color: var(--accent);
  outline: 0;
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-color: #c0553f;
}

body[data-theme="dim"] .field.is-invalid input,
body[data-theme="dim"] .field.is-invalid textarea {
  border-color: #e08a72;
}

.select-wrap {
  position: relative;
  display: block;
}

.select-wrap select {
  padding-right: 42px;
  cursor: pointer;
}

.select-caret {
  position: absolute;
  top: 50%;
  right: 14px;
  display: inline-flex;
  color: var(--ink-mute);
  font-size: 16px;
  pointer-events: none;
  transform: translateY(-50%);
}

.form-submit {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent-deep), var(--accent-bright));
  color: #ffffff;
  box-shadow: var(--shadow-md);
  font-size: 15px;
  font-weight: 600;
  transition: transform var(--fast), box-shadow var(--base), filter var(--base);
}

.form-note {
  color: var(--ink-mute);
  font-size: 13px;
  line-height: 1.7;
}

.form-note.is-error,
body[data-theme="dim"] .form-note.is-error {
  color: #c0553f;
}

body[data-theme="dim"] .form-note.is-error {
  color: #e08a72;
}

/* Footer */

.site-footer {
  position: relative;
  padding: 88px 0 44px;
  background: var(--page-deep);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 36px;
  padding-bottom: 44px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand .brand-emblem {
  margin-top: 3px;
}

.footer-brand strong {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 600;
}

.footer-brand p {
  max-width: 30ch;
  color: var(--ink-mute);
  font-size: 13px;
  line-height: 1.75;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding-left: 28px;
}

.footer-nav a {
  color: var(--ink-soft);
  font-size: 14px;
  transition: color var(--fast), transform var(--fast);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 26px;
}

.footer-meta,
.footer-filing {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  color: var(--ink-mute);
  font-size: 13px;
}

.footer-filing[hidden],
.footer-meta [hidden],
.footer-filing [hidden] {
  display: none;
}

.footer-icp {
  transition: color var(--fast);
}

/* Legal and policy pages */

.legal-page {
  min-height: 100vh;
  background: var(--page);
}

.legal-page::after {
  opacity: 0.04;
}

.legal-header {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 40px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.legal-brand {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.legal-back {
  color: var(--ink-soft);
  font-size: 13px;
  transition: color var(--fast);
}

.legal-back:hover {
  color: var(--accent);
}

.legal-main {
  padding: 72px 24px 96px;
}

.legal-shell {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
}

.legal-eyebrow {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.legal-intro {
  padding-bottom: 36px;
}

.legal-intro h1 {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: clamp(34px, 6vw, 56px);
  letter-spacing: -0.035em;
}

.legal-intro p {
  max-width: 66ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.legal-updated {
  display: inline-flex;
  margin-top: 18px;
  padding: 5px 10px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-family: var(--mono);
  font-size: 11px;
}

.legal-grid {
  display: grid;
  gap: 16px;
}

.legal-section {
  padding: 26px 28px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.legal-section h2 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 18px;
}

.legal-section p,
.legal-section li {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.legal-section ul {
  display: grid;
  gap: 8px;
}

.legal-section li {
  position: relative;
  padding-left: 18px;
}

.legal-section li::before {
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.legal-section a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-footer {
  padding: 26px 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-mute);
  font-size: 12px;
  text-align: center;
}

.legal-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.legal-links a:hover {
  color: var(--accent);
}

@media (max-width: 600px) {
  .legal-header {
    padding: 0 20px;
  }

  .legal-main {
    padding: 48px 18px 72px;
  }

  .legal-section {
    padding: 22px 20px;
  }
}

/* Entrance motion */

body.is-motion-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: opacity 0.68s var(--ease-out), transform 0.68s var(--ease-out);
}

body.is-motion-ready .section-head[data-reveal] {
  transform: translate3d(0, 26px, 0);
  transition-duration: 0.84s;
}

body.is-motion-ready .capability-visual[data-reveal] {
  clip-path: inset(0 0 8% 0);
  transform: translate3d(-18px, 0, 0);
  transition: opacity 0.82s var(--ease-out), transform 0.82s var(--ease-out), clip-path 0.9s var(--ease-out);
}

body.is-motion-ready .capability-item[data-reveal] {
  transform: translate3d(18px, 0, 0);
  transition-duration: 0.56s;
}

body.is-motion-ready .delivery-track[data-reveal] {
  transform: translate3d(0, 22px, 0);
  transition-duration: 0.78s;
}

body.is-motion-ready .terms-entry[data-reveal] {
  transform: translate3d(0, 14px, 0);
  transition-duration: 0.62s;
}

body.is-motion-ready .contact-form-card[data-reveal] {
  transform: translate3d(18px, 0, 0);
  transition-duration: 0.76s;
}

body.is-motion-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

body.is-motion-ready .capability-visual[data-reveal].is-visible {
  clip-path: inset(0 0 0 0);
}

@keyframes field-sweep {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes signal-travel {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -0.64;
  }
}

/* Pointer feedback */

@media (hover: hover) and (pointer: fine) {
  .primary-nav a:hover {
    background: var(--surface-soft);
    color: var(--ink);
  }

  .primary-nav a.is-active:hover {
    background: var(--accent-soft);
    color: var(--accent-deep);
  }

  .brand:hover .brand-emblem span {
    opacity: 1;
  }

  .theme-toggle:hover {
    border-color: var(--accent-line);
    color: var(--accent-deep);
  }

  .header-cta:hover,
  .hero-button.is-primary:hover,
  .contact-button.is-primary:hover,
  .form-submit:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
  }

  .header-cta:hover .trailing-icon,
  .hero-button.is-primary:hover .trailing-icon,
  .contact-button.is-primary:hover .trailing-icon {
    transform: translate(2px, -2px);
  }

  .hero-button:not(.is-primary):hover,
  .contact-button:not(.is-primary):hover {
    border-color: var(--accent-line);
    color: var(--accent-deep);
    transform: translateY(-1px);
  }

  .capability-item:hover,
  .capability-item:focus-visible {
    background: linear-gradient(90deg, var(--accent-soft), transparent 70%);
  }

  .capability-item:hover .capability-icon,
  .capability-item:focus-visible .capability-icon {
    color: var(--accent);
    transform: translateX(2px);
  }

  .delivery-step:hover .flow-index,
  .delivery-step:hover .delivery-code {
    color: #d9fff4;
  }

  .terms-entry:hover {
    border-color: var(--accent-line);
    box-shadow: 0 0 28px -6px rgba(31, 151, 139, 0.22), 0 1px 0 0 rgba(127, 216, 196, 0.1) inset;
  }

  .contact-email:hover {
    border-bottom-color: var(--accent);
  }

  .field input:hover,
  .field textarea:hover,
  .field select:hover {
    border-color: var(--accent-line);
  }

  .footer-nav a:hover {
    color: var(--accent-deep);
    transform: translateX(2px);
  }

  .footer-icp:hover,
  .mobile-menu a:hover {
    color: var(--accent-deep);
  }
}

.theme-toggle:active,
.menu-toggle:active,
.header-cta:active,
.hero-button:active,
.contact-button:active,
.form-submit:active {
  transform: scale(0.97);
}

/* Responsive */

@media (max-width: 1080px) {
  .section,
  .services-section,
  .terms-section,
  .contact-section {
    padding-top: 96px;
    padding-bottom: 104px;
  }

  .delivery-section {
    padding-top: 104px;
    padding-bottom: 112px;
  }

  .section-head {
    gap: 16px;
    margin-bottom: 56px;
    padding-bottom: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .section-head .section-lead {
    max-width: 46ch;
    padding-bottom: 0;
    padding-left: 0;
    border-left: none;
    grid-column: 1;
    grid-row: 3;
  }

  .capability-layout {
    gap: 42px;
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  }

  .capability-visual {
    min-height: 470px;
  }

  .delivery-steps {
    gap: 32px;
  }

  .contact-inner {
    gap: 56px;
    grid-template-columns: minmax(0, 0.86fr) minmax(380px, 1.14fr);
  }

  .terms-ledger {
    grid-template-columns: minmax(0, 1fr);
  }

  .terms-copy {
    gap: 10px;
  }
}

@media (max-width: 900px) {
  .primary-nav,
  .header-cta {
    display: none;
  }

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

  .hero {
    min-height: auto;
    padding: 72px 0 96px;
  }

  .hero-title {
    font-size: 50px;
  }

  .section,
  .services-section,
  .terms-section,
  .contact-section {
    padding-top: 80px;
    padding-bottom: 84px;
  }

  .delivery-section {
    padding-top: 88px;
    padding-bottom: 92px;
  }

  .section-head {
    margin-bottom: 44px;
  }

  .section-head h2 {
    font-size: 36px;
  }

  .capability-layout,
  .contact-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .capability-layout {
    gap: 26px;
  }

  .capability-visual {
    min-height: 500px;
    max-width: 560px;
    margin: 0 auto;
  }

  .contact-inner {
    gap: 48px;
  }

  .contact-copy {
    max-width: 620px;
  }

  .delivery-head h2 {
    font-size: 40px;
  }

  .terms-ledger {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .site-footer {
    padding: 68px 0 40px;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 0 20px;
  }

  .mobile-menu {
    padding: 12px 20px 20px;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-actions .hero-button {
    flex: 1 1 auto;
    justify-content: center;
  }

  .section-head h2,
  .contact-copy h2 {
    font-size: 32px;
  }

  .capability-visual {
    min-height: 400px;
  }

  .capability-core {
    width: 154px;
    min-height: 154px;
  }

  .capability-core strong {
    font-size: 18px;
  }

  .capability-item {
    gap: 12px;
    padding: 17px 0;
    grid-template-columns: 26px 28px minmax(0, 1fr) 24px;
  }

  .capability-item h3 {
    font-size: 16px;
  }

  .capability-item p {
    font-size: 13.5px;
  }

  .delivery-head {
    margin-bottom: 48px;
  }

  .delivery-head h2 {
    font-size: 34px;
  }

  .delivery-track {
    min-height: 0;
    padding-top: 0;
  }

  .delivery-path {
    display: none;
  }

  .delivery-steps {
    position: relative;
    gap: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .delivery-steps::before {
    position: absolute;
    top: 12px;
    bottom: 12px;
    left: 6px;
    width: 1px;
    background: rgba(127, 216, 196, 0.36);
    content: "";
  }

  .delivery-step,
  .delivery-step:nth-child(2) {
    min-height: 150px;
    padding: 0 0 32px 34px;
    transform: none;
  }

  .delivery-step:last-child {
    min-height: 0;
    padding-bottom: 0;
  }

  .delivery-step::before {
    top: 7px;
    left: 0;
    width: 13px;
    height: 13px;
    border: 3px solid var(--signal-dark);
    border-radius: 50%;
    background: #7fd8c4;
  }

  .flow-index {
    margin-bottom: 10px;
  }

  .terms-ledger {
    gap: 14px;
  }

  .terms-entry {
    padding: 24px 20px 22px;
  }

  .terms-copy {
    gap: 10px;
  }

  .terms-state {
    padding-top: 0;
  }

  .contact-signal {
    height: 120px;
    margin: 34px 0 22px;
  }

  .contact-form-card {
    padding: 0 22px 24px;
  }

  .form-toolbar {
    min-height: 52px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .footer-nav {
    align-self: stretch;
    padding-top: 24px;
    padding-left: 0;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 420px) {
  .section,
  .services-section,
  .terms-section,
  .contact-section {
    padding-top: 64px;
    padding-bottom: 68px;
  }

  .delivery-section {
    padding-top: 72px;
    padding-bottom: 76px;
  }

  .hero-title {
    font-size: 34px;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .section-head h2,
  .contact-copy h2,
  .delivery-head h2 {
    font-size: 29px;
  }

  .capability-visual {
    min-height: 330px;
  }

  .capability-core {
    width: 130px;
    min-height: 130px;
    padding: 14px;
  }

  .capability-core span,
  .capability-core small {
    font-size: 8px;
  }

  .capability-core strong {
    margin: 5px 0;
    font-size: 16px;
  }

  .contact-fact {
    gap: 6px;
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-actions .contact-button {
    flex: 1 1 auto;
    justify-content: center;
  }

  .form-toolbar span:last-child {
    display: none;
  }

  .field textarea {
    min-height: 108px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .hero-canvas {
    opacity: 0 !important;
  }

  .hero-focus-word {
    opacity: 1;
    filter: blur(0);
  }

  .hero-focus-frame {
    display: none;
  }

  body.is-motion-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }

  /* service-card 子项��� contact-card 有���立的隐藏初态���
     reduced-motion 下同样需���显式重置，避免���在 opacity:0 */
  body.is-motion-ready .service-card[data-reveal] > *,
  body.is-motion-ready .contact-inner[data-reveal] .contact-card {
    opacity: 1;
    transform: none;
  }
}