/* ==========================================================================
   深源碧融 BIRONG CONSULTING — 全站样式
   Design tokens → Base → Layout → Components → Pages → Utilities → Responsive
   ========================================================================== */

/* ── 1. Design tokens ─────────────────────────────────────────────────── */
:root {
  /* 深色（夜景）*/
  --navy-900: #060d18;
  --navy-800: #0a1628;
  --navy-700: #0f2038;
  --navy-600: #16304f;
  --navy-500: #1d3f66;

  /* 蓝（取自海报主色 #4A90E2）*/
  --blue-700: #143d73;
  --blue-600: #1b4e92;
  --blue-500: #2e6fc7;
  --blue-400: #4a90e2;
  --blue-300: #6db3f8;
  --blue-100: #e8f1fb;

  /* 金（点缀）*/
  --gold-700: #96751f;
  --gold-600: #b8912a;
  --gold-500: #c9a227;
  --gold-400: #dcb849;
  --gold-300: #e8c766;
  --gold-100: #faf3dc;

  /* 文字 / 中性色 */
  --ink-900: #0a1628;
  --ink-800: #172b45;
  --ink-700: #2c3e56;
  --ink-500: #5a7391;
  --ink-400: #8fa3bf;
  --ink-300: #b8c6d8;

  /* 背景 / 描边 */
  --paper: #ffffff;
  --paper-2: #f6f9fc;
  --paper-3: #eef4fa;
  --line: #e3eaf2;
  --line-soft: #eef2f7;
  --line-dark: rgba(255, 255, 255, 0.1);

  /* 圆角 / 阴影 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  --sh-sm: 0 1px 2px rgba(10, 22, 40, 0.06), 0 1px 3px rgba(10, 22, 40, 0.04);
  --sh-md: 0 4px 12px rgba(10, 22, 40, 0.07), 0 2px 4px rgba(10, 22, 40, 0.04);
  --sh-lg: 0 12px 32px rgba(10, 22, 40, 0.1), 0 4px 8px rgba(10, 22, 40, 0.04);
  --sh-xl: 0 24px 64px rgba(10, 22, 40, 0.16);

  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC',
    'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  /* 布局 */
  --container: 1200px;
  --container-narrow: 840px;
  --header-h: 72px;
  --section-y: 104px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ── 2. Base / reset ──────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

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

img {
  height: auto;
}

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

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

button {
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5 {
  line-height: 1.28;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

em {
  font-style: normal;
  font-weight: 700;
  color: var(--blue-600);
}

::selection {
  background: var(--blue-400);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--blue-400);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 跳过导航（无障碍）*/
.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 999;
  background: var(--navy-800);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--r-sm);
  font-size: 14px;
  transition: top 0.2s var(--ease);
}

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

/* 屏幕阅读器专用 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── 3. Layout ────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight {
  padding-block: 72px;
}

.section--paper {
  background: var(--paper);
}

.section--alt {
  background: var(--paper-2);
}

.section--dark {
  background: var(--navy-800);
  color: var(--ink-300);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: #fff;
}

.section--gradient {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 55%, var(--blue-700) 100%);
  color: var(--ink-300);
}

.section--gradient h2,
.section--gradient h3 {
  color: #fff;
}

/* 深色区里的装饰性光晕 */
.section--dark::before,
.section--gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 50% at 80% 0%, rgba(74, 144, 226, 0.16), transparent 70%),
    radial-gradient(40% 40% at 10% 100%, rgba(201, 162, 39, 0.08), transparent 70%);
  pointer-events: none;
}

.section > .container {
  position: relative;
  z-index: 1;
}

/* ── 4. Section heading ───────────────────────────────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section--dark .eyebrow,
.section--gradient .eyebrow {
  color: var(--blue-300);
}

.section-head {
  max-width: 760px;
  margin-bottom: 56px;
}

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

.section-head--center .eyebrow {
  justify-content: center;
}

.section-title {
  font-size: clamp(28px, 3.6vw, 44px);
  margin-bottom: 18px;
}

.section-title--sm {
  font-size: clamp(24px, 2.6vw, 32px);
}

.section-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-500);
}

.section--dark .section-sub,
.section--gradient .section-sub {
  color: var(--ink-400);
}

/* ── 5. Buttons ───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.btn:active {
  transform: translateY(0);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform 0.25s var(--ease);
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--blue-400), var(--blue-600));
  color: #fff;
  box-shadow: 0 4px 16px rgba(46, 111, 199, 0.32);
}

.btn--primary:hover {
  box-shadow: 0 10px 28px rgba(46, 111, 199, 0.44);
}

.btn--gold {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  color: var(--navy-900);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.3);
}

.btn--gold:hover {
  box-shadow: 0 10px 28px rgba(201, 162, 39, 0.42);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--outline {
  background: transparent;
  color: var(--blue-600);
  border-color: var(--line);
}

.btn--outline:hover {
  border-color: var(--blue-400);
  background: var(--blue-100);
}

.btn--sm {
  padding: 11px 20px;
  font-size: 14px;
}

.btn--lg {
  padding: 18px 38px;
  font-size: 16px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-row--center {
  justify-content: center;
}

/* 文字链接（带箭头）*/
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--blue-600);
  transition: gap 0.25s var(--ease), color 0.25s var(--ease);
}

.link-arrow svg {
  width: 15px;
  height: 15px;
}

.link-arrow:hover {
  gap: 13px;
  color: var(--blue-500);
}

/* ── 6. Header ────────────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

/* 首页未滚动时：透明浮在 Hero 上 */
.header--transparent {
  background: linear-gradient(180deg, rgba(6, 13, 24, 0.72), rgba(6, 13, 24, 0));
}

.header.is-scrolled,
.header--solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 20px rgba(10, 22, 40, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
}

/* Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(27, 78, 146, 0.3);
  transition: transform 0.3s var(--ease);
}

.brand:hover .brand__mark {
  transform: scale(1.06) rotate(-3deg);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__cn {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #fff;
  transition: color 0.35s var(--ease);
}

.brand__latin {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.35s var(--ease);
}

.header.is-scrolled .brand__cn,
.header--solid .brand__cn {
  color: var(--ink-900);
}

.header.is-scrolled .brand__latin,
.header--solid .brand__latin {
  color: var(--ink-500);
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  padding: 9px 15px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.86);
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue-300), var(--gold-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav__link:hover {
  color: #fff;
}

.nav__link:hover::after,
.nav__link[aria-current='page']::after {
  transform: scaleX(1);
}

.nav__link[aria-current='page'] {
  color: #fff;
}

.header.is-scrolled .nav__link,
.header--solid .nav__link {
  color: var(--ink-700);
}

.header.is-scrolled .nav__link:hover,
.header--solid .nav__link:hover,
.header.is-scrolled .nav__link[aria-current='page'],
.header--solid .nav__link[aria-current='page'] {
  color: var(--blue-600);
}

/* Header actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* Language switcher */
.lang {
  display: flex;
  align-items: center;
  padding: 3px;
  gap: 2px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease);
}

.header.is-scrolled .lang,
.header--solid .lang {
  background: var(--paper-3);
  border-color: var(--line);
}

.lang__item {
  padding: 6px 12px;
  border-radius: var(--r-pill);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.7);
  white-space: nowrap;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.lang__item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.lang__item[aria-current='true'] {
  background: #fff;
  color: var(--navy-800);
  box-shadow: var(--sh-sm);
}

.header.is-scrolled .lang__item,
.header--solid .lang__item {
  color: var(--ink-500);
}

.header.is-scrolled .lang__item:hover,
.header--solid .lang__item:hover {
  color: var(--blue-600);
  background: rgba(74, 144, 226, 0.1);
}

.header.is-scrolled .lang__item[aria-current='true'],
.header--solid .lang__item[aria-current='true'] {
  background: var(--blue-600);
  color: #fff;
}

/* Burger */
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--r-sm);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease), background 0.35s var(--ease);
}

.burger[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.burger[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header.is-scrolled .burger,
.header--solid .burger {
  border-color: var(--line);
}

.header.is-scrolled .burger span,
.header--solid .burger span {
  background: var(--ink-800);
}

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  background: var(--navy-800);
  padding: 32px 24px 48px;
  overflow-y: auto;
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.drawer__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line-dark);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.drawer__link svg {
  width: 16px;
  height: 16px;
  color: var(--blue-300);
  opacity: 0.6;
}

.drawer__link[aria-current='page'] {
  color: var(--blue-300);
}

.drawer__foot {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 语言切换器按内容宽度收缩，不要撑满整行 */
.drawer__foot .lang {
  align-self: flex-start;
}

.drawer__contact {
  font-size: 14px;
  color: var(--ink-400);
  line-height: 1.9;
}

.drawer__contact a {
  color: var(--blue-300);
}

/* ── 7. Hero ──────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-h) + 48px);
  padding-bottom: 120px;
  background: var(--navy-900);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url('../img/hero-skyline.jpg');
  background-size: cover;
  background-position: center 38%;
  transform: scale(1.03);
}

/* 左侧压暗保证文字对比度，右侧留出夜景天际线 */
.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(6, 13, 24, 0.95) 0%, rgba(6, 13, 24, 0.84) 36%,
      rgba(6, 13, 24, 0.44) 74%, rgba(6, 13, 24, 0.68) 100%),
    linear-gradient(180deg, rgba(6, 13, 24, 0.88) 0%, rgba(6, 13, 24, 0.24) 42%,
      rgba(6, 13, 24, 0.92) 100%),
    radial-gradient(58% 52% at 20% 46%, rgba(27, 78, 146, 0.42), transparent 72%);
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 56px;
  align-items: center;
  width: 100%;
}

.hero__content {
  max-width: 720px;
}

.hero h1 {
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 26px;
}

.hero h1 .accent {
  display: block;
  background: linear-gradient(100deg, var(--blue-300) 0%, var(--gold-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__sub {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.74);
  max-width: 620px;
  margin-bottom: 40px;
}

.hero__sub em {
  color: var(--gold-300);
  font-weight: 700;
}

.hero .eyebrow {
  color: var(--gold-300);
}

/* 英文标题字幅更宽，单独收一号，避免在 Hero 里折成三行 */
html[lang='en'] .hero h1 {
  font-size: clamp(34px, 5vw, 58px);
}

html[lang='en'] .page-hero h1 {
  font-size: clamp(30px, 4vw, 46px);
}

/* 星芒徽章（沿用海报视觉）*/
.hero__badge {
  position: relative;
  width: 208px;
  height: 208px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  animation: floaty 7s ease-in-out infinite;
}

.hero__badge svg.burst {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 10px 30px rgba(74, 144, 226, 0.45));
  animation: spin 44s linear infinite;
}

.hero__badge-text {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 34px;
}

.hero__badge-text b {
  display: block;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #fff;
  line-height: 1.35;
}

.hero__badge-text span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.4;
}

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

@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* 底部数据条会向上叠压 Hero，这里留出足够间距避免碰撞 */
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 104px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
}

.hero__scroll::after {
  content: '';
  width: 1px;
  height: 34px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent);
  animation: scrollHint 2s ease-in-out infinite;
}

@keyframes scrollHint {
  0%,
  100% {
    opacity: 0.3;
    transform: scaleY(0.6);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

/* ── 8. Stats band ────────────────────────────────────────────────────── */
.stats {
  position: relative;
  z-index: 5;
  margin-top: -76px;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: var(--paper);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-xl);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.stat {
  padding: 40px 32px;
  text-align: center;
  border-right: 1px solid var(--line-soft);
  transition: background 0.3s var(--ease);
}

.stat:last-child {
  border-right: 0;
}

.stat:hover {
  background: var(--paper-2);
}

.stat__value {
  font-size: clamp(32px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 10px;
}

.stat__label {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 3px;
}

.stat__latin {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--ink-400);
  margin-bottom: 10px;
}

.stat__note {
  font-size: 13.5px;
  color: var(--ink-500);
}

/* ── 9. Cards ─────────────────────────────────────────────────────────── */
.grid {
  display: grid;
  gap: 24px;
}

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

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

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

.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 34px 30px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-400), var(--gold-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

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

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

.card__latin {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--blue-400);
  margin-bottom: 10px;
}

.card__title {
  font-size: 20px;
  margin-bottom: 12px;
}

.card__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
  margin-bottom: 18px;
}

/* 带项目符号的清单 */
.tick-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.tick-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-500);
}

.tick-list li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue-400);
}

.tick-list--gold li::before {
  background: var(--gold-500);
}

/* 深色卡片变体 */
.card--dark {
  background: rgba(255, 255, 255, 0.035);
  border-color: var(--line-dark);
  backdrop-filter: blur(6px);
}

.card--dark .card__title {
  color: #fff;
}

.card--dark .card__desc,
.card--dark .tick-list li {
  color: var(--ink-400);
}

.card--dark .card__latin {
  color: var(--gold-300);
}

.card--dark:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(74, 144, 226, 0.4);
}

/* 图标卡片 */
.card__icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--blue-100), #dceafa);
  color: var(--blue-600);
}

.card__icon svg {
  width: 22px;
  height: 22px;
}

.card--dark .card__icon {
  background: rgba(74, 144, 226, 0.14);
  color: var(--blue-300);
}

/* 优势条目（更紧凑）*/
.advantage {
  display: flex;
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.advantage__no {
  flex-shrink: 0;
  width: 38px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--blue-400);
  padding-top: 3px;
}

.advantage__title {
  font-size: 17px;
  margin-bottom: 7px;
}

.advantage__desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-500);
}

.section--dark .advantage,
.section--gradient .advantage {
  border-bottom-color: var(--line-dark);
}

.section--dark .advantage__desc,
.section--gradient .advantage__desc {
  color: var(--ink-400);
}

/* ── 10. Process steps ────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 12px);
}

.step {
  position: relative;
  text-align: center;
  padding-top: 0;
}

.step__no {
  position: relative;
  z-index: 1;
  width: 54px;
  height: 54px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  box-shadow: 0 6px 20px rgba(46, 111, 199, 0.32), 0 0 0 6px var(--paper);
  transition: transform 0.3s var(--ease);
}

.section--alt .step__no {
  box-shadow: 0 6px 20px rgba(46, 111, 199, 0.32), 0 0 0 6px var(--paper-2);
}

.step:hover .step__no {
  transform: scale(1.08);
}

.step__title {
  font-size: 16.5px;
  margin-bottom: 8px;
}

.step__dur {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold-600);
  background: var(--gold-100);
  padding: 3px 10px;
  border-radius: var(--r-pill);
  margin-bottom: 12px;
}

.step__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

/* 流程步骤（竖向详细版）*/
.step-detail {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.step-detail:last-child {
  border-bottom: 0;
}

.step-detail__aside {
  position: relative;
}

.step-detail__no {
  font-size: 52px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  background: linear-gradient(150deg, var(--blue-300), var(--blue-600));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.step-detail__main h3 {
  font-size: 22px;
  margin-bottom: 6px;
}

.step-detail__dur {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--gold-600);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.step-detail__desc {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
  margin-bottom: 20px;
  max-width: 680px;
}

.deliver {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.deliver__tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-700);
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 7px 14px;
  border-radius: var(--r-pill);
}

.deliver__tag svg {
  width: 13px;
  height: 13px;
  color: var(--blue-400);
}

/* ── 11. Roadmap timeline ─────────────────────────────────────────────── */
.roadmap {
  position: relative;
  padding-left: 4px;
}

.roadmap::before {
  content: '';
  position: absolute;
  left: 31px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-400), var(--gold-400));
  opacity: 0.35;
}

.roadmap__item {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 26px;
  padding-bottom: 38px;
}

.roadmap__item:last-child {
  padding-bottom: 0;
}

.roadmap__dot {
  position: relative;
  z-index: 1;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-align: center;
  line-height: 1.2;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  box-shadow: 0 6px 18px rgba(46, 111, 199, 0.3);
  padding: 6px;
}

.roadmap__item:last-child .roadmap__dot {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  color: var(--navy-900);
  box-shadow: 0 6px 18px rgba(201, 162, 39, 0.4);
}

.roadmap__body {
  padding-top: 6px;
}

.roadmap__title {
  font-size: 19px;
  margin-bottom: 8px;
}

.roadmap__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
  max-width: 720px;
}

.section--dark .roadmap__desc,
.section--gradient .roadmap__desc {
  color: var(--ink-400);
}

.section--dark .roadmap::before,
.section--gradient .roadmap::before {
  opacity: 0.5;
}

/* ── 12. Table ────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--paper);
  box-shadow: var(--sh-sm);
  -webkit-overflow-scrolling: touch;
}

table.schemes {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 14.5px;
}

table.schemes thead th {
  background: var(--navy-800);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: left;
  padding: 18px 22px;
  white-space: nowrap;
}

table.schemes thead th:first-child {
  border-top-left-radius: var(--r-lg);
}

table.schemes thead th:last-child {
  border-top-right-radius: var(--r-lg);
}

table.schemes tbody tr {
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.2s var(--ease);
}

table.schemes tbody tr:last-child {
  border-bottom: 0;
}

table.schemes tbody tr:hover {
  background: var(--paper-2);
}

table.schemes td {
  padding: 20px 22px;
  vertical-align: top;
  line-height: 1.75;
  color: var(--ink-500);
}

table.schemes td:first-child {
  color: var(--ink-900);
  font-weight: 700;
  min-width: 190px;
}

table.schemes .scheme-latin {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-400);
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.table-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-500);
  background: var(--paper-3);
  border-left: 3px solid var(--blue-400);
  padding: 16px 20px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.table-note svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--blue-500);
}

/* ── 13. Service detail (services page) ───────────────────────────────── */
.svc {
  padding-block: 72px;
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.svc:last-of-type {
  border-bottom: 0;
}

.svc__head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 48px;
  margin-bottom: 40px;
}

.svc__title {
  font-size: clamp(24px, 2.8vw, 34px);
  margin-bottom: 14px;
}

.svc__lead {
  font-size: 17px;
  font-weight: 600;
  color: var(--blue-600);
  line-height: 1.7;
}

.svc__body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-500);
}

.svc__items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

/* 按小项数量决定列数，避免最后一行只剩一项、右侧留一大片空白。
   5 项时用 6 栏栅格：上排 3 项各占 2 栏，下排 2 项各占 3 栏 —— 两行都铺满。 */
.svc__items[data-count='3'] {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.svc__items[data-count='4'] {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.svc__items[data-count='5'] {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.svc__items[data-count='5'] > .svc__item:nth-child(-n + 3) {
  grid-column: span 2;
}

.svc__items[data-count='5'] > .svc__item:nth-child(n + 4) {
  grid-column: span 3;
}

/* 只用内部分隔线，避免网格末尾空单元格露出底色 */
.svc__item {
  background: var(--paper);
  padding: 24px 26px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.25s var(--ease);
}

.svc__item:hover {
  background: var(--paper-2);
}

.svc__item h4 {
  font-size: 15.5px;
  font-weight: 700;
  margin-bottom: 7px;
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.svc__item h4::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--gold-500);
}

.svc__item p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
  padding-left: 15px;
}

/* 服务页侧边锚点导航 */
.svc-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}

.svc-index a {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-700);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 9px 18px;
  border-radius: var(--r-pill);
  transition: all 0.25s var(--ease);
}

.svc-index a:hover {
  color: #fff;
  background: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-2px);
}

/* ── 14. FAQ / details ────────────────────────────────────────────────── */
.faq {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 880px;
}

.faq__item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.faq__item[open] {
  border-color: var(--blue-400);
  box-shadow: var(--sh-md);
}

.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease);
}

.faq__q::-webkit-details-marker {
  display: none;
}

.faq__q:hover {
  color: var(--blue-600);
}

.faq__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  position: relative;
}

.faq__icon::before,
.faq__icon::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--blue-500);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.faq__icon::before {
  width: 13px;
  height: 2px;
}

.faq__icon::after {
  width: 2px;
  height: 13px;
}

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

.faq__a {
  padding: 0 26px 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-500);
  max-width: 760px;
}

/* ── 15. CTA band ─────────────────────────────────────────────────────── */
.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--blue-700) 100%);
  color: #fff;
  border-radius: var(--r-xl);
  padding: 64px 56px;
  text-align: center;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(55% 70% at 82% 12%, rgba(74, 144, 226, 0.34), transparent 70%),
    radial-gradient(45% 60% at 12% 92%, rgba(201, 162, 39, 0.16), transparent 70%);
}

.cta-band > * {
  position: relative;
  z-index: 1;
}

.cta-band h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  color: #fff;
  margin-bottom: 16px;
}

.cta-band p {
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
  max-width: 620px;
  margin: 0 auto 34px;
}

/* ── 16. Page hero (inner pages) ──────────────────────────────────────── */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-h) + 84px);
  padding-bottom: 84px;
  background: var(--navy-900);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url('../img/hero-skyline.jpg');
  background-size: cover;
  background-position: center 30%;
}

.page-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(6, 13, 24, 0.94) 0%, rgba(10, 22, 40, 0.87) 60%,
      rgba(15, 32, 56, 0.95) 100%);
}

.page-hero h1 {
  font-size: clamp(32px, 4.6vw, 54px);
  color: #fff;
  margin-bottom: 20px;
}

.page-hero__sub {
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
  max-width: 720px;
}

.page-hero .eyebrow {
  color: var(--gold-300);
}

/* 面包屑 */
.crumbs {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.46);
  margin-bottom: 22px;
}

.crumbs a:hover {
  color: var(--blue-300);
}

.crumbs svg {
  width: 12px;
  height: 12px;
  opacity: 0.5;
}

/* ── 17. Contact page ─────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: 56px;
  align-items: start;
}

.channel {
  display: flex;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.channel__icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue-100), #dceafa);
  color: var(--blue-600);
}

.channel__icon svg {
  width: 19px;
  height: 19px;
}

.channel__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-400);
  margin-bottom: 5px;
}

.channel__value {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-900);
  word-break: break-word;
  line-height: 1.55;
}

.channel__value a:hover {
  color: var(--blue-600);
}

.channel__desc {
  font-size: 13.5px;
  color: var(--ink-500);
  line-height: 1.7;
  margin-top: 5px;
}

/* 表单 */
.form-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 40px;
  box-shadow: var(--sh-md);
}

.form-card h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.form-card > p {
  font-size: 14.5px;
  color: var(--ink-500);
  line-height: 1.75;
  margin-bottom: 30px;
}

.field {
  margin-bottom: 20px;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-800);
  margin-bottom: 8px;
}

.field label .req {
  color: #d64545;
  margin-left: 3px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  font-size: 15px;
  color: var(--ink-900);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

.field textarea {
  min-height: 130px;
  resize: vertical;
  line-height: 1.7;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: var(--paper);
  border-color: var(--blue-400);
  box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.14);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-400);
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%235A7391' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 42px;
  cursor: pointer;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-400);
  margin-top: 18px;
}

.form-status {
  display: none;
  margin-top: 16px;
  padding: 13px 16px;
  border-radius: var(--r-md);
  font-size: 14px;
  line-height: 1.7;
  background: var(--blue-100);
  border: 1px solid rgba(74, 144, 226, 0.3);
  color: var(--blue-700);
}

.form-status.is-visible {
  display: block;
}

.form-status.is-ok {
  background: #eaf8f0;
  border-color: rgba(34, 150, 88, 0.32);
  color: #1c7a49;
}

.form-status.is-error {
  background: #fdecec;
  border-color: rgba(200, 60, 60, 0.3);
  color: #ad2b2b;
}

/* 蜜罐字段：真人看不见，只有自动填表的机器人会填上 */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}


/* ── 18. About page ───────────────────────────────────────────────────── */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-top: 56px;
}

.fact {
  background: var(--paper);
  padding: 34px 24px;
  text-align: center;
}

.fact__value {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--blue-600);
  margin-bottom: 10px;
}

.fact__label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-500);
  line-height: 1.5;
}

.prose p {
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--ink-500);
  margin-bottom: 22px;
  max-width: 760px;
}

.prose p:first-of-type {
  font-size: 18.5px;
  line-height: 1.85;
  color: var(--ink-700);
}

.prose p:last-child {
  margin-bottom: 0;
}

/* 团队卡 */
.member {
  display: flex;
  gap: 26px;
  align-items: flex-start;
  padding: 36px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  max-width: 720px;
  box-shadow: var(--sh-sm);
}

.member__avatar {
  flex-shrink: 0;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  box-shadow: 0 8px 24px rgba(46, 111, 199, 0.3);
}

.member__name {
  font-size: 21px;
  margin-bottom: 4px;
}

.member__role {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold-600);
  margin-bottom: 12px;
}

.member__bio {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* 价值主张 */
.value-card {
  padding: 32px 30px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
}

.value-card__no {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--gold-500);
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 19px;
  margin-bottom: 12px;
}

.value-card p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ── 扫码联系：悬停 / 点击显示二维码 ─────────────────────────────────── */
.qr-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 26px;
}

/* 联系页的可翻转卡片：正面是说明，悬停翻出二维码 */
.qr-card {
  position: relative;
  width: min(280px, 100%);
  height: 300px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    background 0.35s var(--ease);
}

.qr-card:hover,
.qr-card:focus-visible,
.qr-card--reveal.is-open {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(74, 144, 226, 0.5);
}

.qr-card__cover,
.qr-card__code {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease),
    visibility 0.32s;
}

.qr-card__cover {
  padding: 28px 24px;
  text-align: center;
}

.qr-card__icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: rgba(74, 144, 226, 0.14);
  color: var(--blue-300);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
}

.qr-card:hover .qr-card__icon {
  transform: scale(1.08);
  background: rgba(74, 144, 226, 0.24);
}

.qr-card__title {
  font-size: 19px;
  color: #fff;
  margin-bottom: 8px;
}

.qr-card__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-400);
}

.qr-card__hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--blue-300);
  background: rgba(74, 144, 226, 0.12);
  border: 1px solid rgba(74, 144, 226, 0.24);
}

.qr-card__hint svg {
  width: 13px;
  height: 13px;
}

/* 背面：二维码本体（白底 + 内边距 = 静默区，保证扫码识别率）*/
.qr-card__code {
  gap: 10px;
  padding: 16px;
  background: var(--navy-700);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.92);
}

.qr-card__code img {
  width: 168px;
  height: 168px;
  display: block;
  background: #fff;
  padding: 8px;
  border-radius: 10px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
}

.qr-card__scan {
  font-size: 12px;
  color: var(--ink-400);
}

.qr-card--reveal:hover .qr-card__cover,
.qr-card--reveal:focus-visible .qr-card__cover,
.qr-card--reveal.is-open .qr-card__cover {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.06);
}

.qr-card--reveal:hover .qr-card__code,
.qr-card--reveal:focus-visible .qr-card__code,
.qr-card--reveal.is-open .qr-card__code {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.qr-hint {
  max-width: 620px;
  margin: 32px auto 0;
  text-align: center;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-400);
}

/* ── 页脚：小触发按钮 + 向上弹出的二维码 ─────────────────────────────── */
.footer__qr {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.qr-pop {
  position: relative;
}

.qr-pop__trigger {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 5px 0;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-400);
  border-bottom: 1px dashed rgba(143, 163, 191, 0.35);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.qr-pop__trigger svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--blue-300);
}

.qr-pop__trigger:hover,
.qr-pop__trigger[aria-expanded='true'] {
  color: #fff;
  border-bottom-color: var(--blue-400);
}

.qr-pop__card {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 0;
  z-index: 60;
  width: 208px;
  padding: 12px;
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.96);
  transform-origin: bottom left;
  pointer-events: none;
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
    visibility 0.28s;
}

/* 指向触发按钮的小三角 */
.qr-pop__card::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 22px;
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-top-color: #fff;
  margin-top: -1px;
}

.qr-pop__card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}

.qr-pop__card p {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
  color: var(--ink-500);
}

.qr-pop:hover .qr-pop__card,
.qr-pop:focus-within .qr-pop__card,
.qr-pop.is-open .qr-pop__card {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* ── 19. Footer ───────────────────────────────────────────────────────── */
.footer {
  background: var(--navy-900);
  color: var(--ink-400);
  padding-top: 76px;
  font-size: 14.5px;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(74, 144, 226, 0.5), rgba(201, 162, 39, 0.4), transparent);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer__brand .brand__mark {
  width: 40px;
  height: 40px;
}

.footer__cn {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #fff;
}

.footer__latin {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--ink-400);
}

.footer__blurb {
  line-height: 1.85;
  color: var(--ink-400);
  max-width: 340px;
  margin-bottom: 22px;
}

.footer__title {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 20px;
}

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

.footer__list a,
.footer__list span {
  color: var(--ink-400);
  line-height: 1.7;
  transition: color 0.25s var(--ease);
}

.footer__list a:hover {
  color: var(--blue-300);
}

.footer__list .label {
  display: block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 2px;
}

.footer__contact-item {
  margin-bottom: 16px;
}

.footer__contact-item:last-child {
  margin-bottom: 0;
}

.footer__contact-item a {
  color: #fff;
  font-weight: 600;
  word-break: break-word;
}

.footer__contact-item a:hover {
  color: var(--blue-300);
}

/* 语言切换（页脚）*/
.footer__langs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.footer__langs a {
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-dark);
  color: var(--ink-400);
  transition: all 0.25s var(--ease);
}

.footer__langs a:hover {
  color: #fff;
  border-color: var(--blue-400);
  background: rgba(74, 144, 226, 0.12);
}

.footer__langs a[aria-current='true'] {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid var(--line-dark);
  padding: 26px 0 32px;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-500);
}

.footer__disclaimer {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(143, 163, 191, 0.72);
  max-width: 900px;
}

/* ── 20. 窄屏防溢出 & 触摸目标 ────────────────────────────────────────── */

/* 长英文串（地址、邮箱、URL）在窄屏会撑破布局。
   flex/grid 子项默认 min-width:auto 不允许收缩到内容以下，
   这里统一放开，配合下面的换行规则即可正常折行。 */
.contact-grid > *,
.svc__head > *,
.svc__items > *,
.grid > *,
.footer__grid > *,
.step-detail > *,
.roadmap__item > *,
.member > *,
.hero__inner > *,
.facts > *,
.stats__grid > *,
.channel > *:not(.channel__icon) {
  min-width: 0;
}

/* anywhere 会参与 min-content 计算（break-word 不会），
   因此长单词能在必要处断开而不是撑宽容器 */
.channel__value,
.channel__desc,
.footer__contact-item a,
.footer__contact-item span,
.member__bio,
.faq__a,
.prose p,
.card__desc,
.svc__body,
.svc__item p,
.qr-pop__card p {
  overflow-wrap: anywhere;
}

/* 触摸目标：视觉尺寸不变，用内边距 + 负外边距把可点区域撑到 40px 以上 */
.link-arrow {
  padding-block: 9px;
  margin-block: -9px;
}

.footer__contact-item a {
  display: inline-block;
  padding-block: 5px;
  margin-block: -5px;
}

.footer__list a {
  display: inline-block;
  padding-block: 4px;
  margin-block: -4px;
}

/* 页脚二维码触发按钮：加高点击区，虚线用伪元素另画，避免下划线被推远 */
.qr-pop__trigger {
  position: relative;
  padding: 10px 0;
  border-bottom: 0;
}

.qr-pop__trigger::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  border-bottom: 1px dashed rgba(143, 163, 191, 0.35);
  transition: border-color 0.25s var(--ease);
}

.qr-pop__trigger:hover::after,
.qr-pop__trigger[aria-expanded='true']::after {
  border-bottom-color: var(--blue-400);
}

.footer__qr {
  gap: 0;
}

/* 抽屉里的语言切换器：加大触摸区域 */
.drawer__foot .lang__item {
  padding: 10px 16px;
  font-size: 13px;
}

/* ── 21. Utilities ────────────────────────────────────────────────────── */
.mt-0 { margin-top: 0; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mt-56 { margin-top: 56px; }
.mt-72 { margin-top: 72px; }
.text-center { text-align: center; }
.nowrap { white-space: nowrap; }

.bg-paper { background: var(--paper); }
.bg-alt { background: var(--paper-2); }

/* 滚动进入动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

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

.reveal[data-delay='1'] { transition-delay: 0.08s; }
.reveal[data-delay='2'] { transition-delay: 0.16s; }
.reveal[data-delay='3'] { transition-delay: 0.24s; }
.reveal[data-delay='4'] { transition-delay: 0.32s; }
.reveal[data-delay='5'] { transition-delay: 0.4s; }

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--navy-800);
  color: #fff;
  box-shadow: var(--sh-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  background: var(--blue-600);
  transform: translateY(-3px);
}

.to-top svg {
  width: 18px;
  height: 18px;
}

/* ── 22. Responsive ───────────────────────────────────────────────────── */
@media (max-width: 1080px) {
  :root {
    --section-y: 84px;
  }

  .nav__link {
    padding: 9px 11px;
    font-size: 14.5px;
  }

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

  .hero__badge {
    width: 168px;
    height: 168px;
    order: -1;
    margin-bottom: -8px;
  }

  .hero__badge-text b {
    font-size: 14px;
  }

  .hero__badge-text span {
    font-size: 11.5px;
  }

  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px 20px;
  }

  .steps::before {
    display: none;
  }

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

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

@media (max-width: 900px) {
  .nav,
  .header__actions .lang,
  .header__actions .btn {
    display: none;
  }

  .burger {
    display: flex;
  }

  .header__actions {
    margin-left: auto;
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .svc__head {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 服务小项：平板改两列；5 项时最后一格跨两栏，避免落单 */
  .svc__items[data-count='4'],
  .svc__items[data-count='5'] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .svc__items[data-count='5'] > .svc__item:nth-child(-n + 3),
  .svc__items[data-count='5'] > .svc__item:nth-child(n + 4) {
    grid-column: auto;
  }

  .svc__items[data-count='5'] > .svc__item:nth-child(5) {
    grid-column: span 2;
  }

  .stats {
    margin-top: -56px;
  }

  .stats__grid {
    grid-template-columns: 1fr;
  }

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
    padding: 28px 24px;
  }

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

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

  .step-detail {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 32px 0;
  }

  .step-detail__no {
    font-size: 40px;
  }

  .cta-band {
    padding: 48px 28px;
    border-radius: var(--r-lg);
  }

  .member {
    flex-direction: column;
    padding: 30px 26px;
    gap: 20px;
  }
}

@media (max-width: 680px) {
  :root {
    --section-y: 64px;
    --header-h: 64px;
  }

  .container {
    padding-inline: 20px;
  }

  body {
    font-size: 15.5px;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-h) + 56px);
    padding-bottom: 96px;
  }

  .hero__scroll {
    display: none;
  }

  .hero__sub {
    margin-bottom: 32px;
  }

  .btn-row {
    gap: 12px;
  }

  .btn {
    padding: 14px 24px;
    font-size: 14.5px;
  }

  .btn--lg {
    padding: 16px 28px;
  }

  .btn-row .btn {
    flex: 1 1 100%;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .grid {
    gap: 16px;
  }

  .card {
    padding: 28px 24px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .step {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 18px;
    text-align: left;
    padding: 18px 0;
    align-items: start;
  }

  .step__no {
    margin: 0;
    width: 46px;
    height: 46px;
    font-size: 13.5px;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .facts {
    grid-template-columns: 1fr 1fr;
  }

  .fact {
    padding: 26px 16px;
  }

  .roadmap__item {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 18px;
    padding-bottom: 30px;
  }

  .roadmap__dot {
    width: 54px;
    height: 54px;
    font-size: 10.5px;
    padding: 5px;
  }

  .roadmap::before {
    left: 26px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer__blurb {
    max-width: none;
  }

  .form-card {
    padding: 28px 22px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .svc {
    padding-block: 48px;
  }

  /* 手机端一律单列，并撤掉上面按项数设的跨栏 */
  .svc__items,
  .svc__items[data-count='3'],
  .svc__items[data-count='4'],
  .svc__items[data-count='5'] {
    grid-template-columns: 1fr;
  }

  .svc__items[data-count='5'] > .svc__item:nth-child(-n + 3),
  .svc__items[data-count='5'] > .svc__item:nth-child(n + 4),
  .svc__items[data-count='5'] > .svc__item:nth-child(5) {
    grid-column: auto;
  }

  .svc__item {
    padding: 20px 22px;
  }

  .faq__q {
    padding: 18px 20px;
    font-size: 15.5px;
  }

  .faq__a {
    padding: 0 20px 20px;
  }

  .table-wrap {
    margin-inline: -20px;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }

  .to-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }

  .footer {
    padding-top: 56px;
  }
}

/* ── 23. Motion / print ───────────────────────────────────────────────── */
@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;
  }

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

@media print {
  .header,
  .drawer,
  .to-top,
  .hero__badge,
  .hero__scroll {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .hero,
  .page-hero,
  .section--dark,
  .section--gradient,
  .footer,
  .cta-band {
    background: #fff !important;
    color: #000 !important;
  }

  .hero__bg,
  .hero__scrim,
  .page-hero__bg,
  .page-hero__scrim {
    display: none;
  }

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