/* ============================================================
   德美拓 DMT — 视觉系统 v4「清透渐变 / 靛蓝薄荷」
   参考用户截图（neurofactory）：薄荷/水青渐变底 + 有机模糊气泡 +
   细圆环线 + 深靛蓝文字与按钮 + 大圆角白卡 + 胶囊按钮 +
   超宽字距拉丁大字标题。整站全亮色，无深黑段；
   原 section-dark 语义改为「靛蓝渐变色带」。
   ============================================================ */

/* ------------------------------------------------------------
   本地托管字体：Montserrat / Inter 拉丁可变字体（300–700）。
   中文不再加载 Web 字体，直接走 PingFang SC / Microsoft YaHei
   等系统字体栈 —— Google Fonts 在大陆不可达，本地化后首屏不再依赖外链。
   ------------------------------------------------------------ */
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-var-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-var-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("assets/fonts/inter-var-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("assets/fonts/inter-var-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --indigo: #4046d8;
  --indigo-deep: #3238b4;
  --indigo-dark: #272c92;
  --ink: #111827;
  --text: #374151;
  --muted: #6b7280;
  --muted-2: #9aa3b2;

  --line: rgba(17, 24, 39, 0.12);
  --line-soft: rgba(17, 24, 39, 0.08);
  --line-strong: rgba(17, 24, 39, 0.18);

  --paper: #ffffff;
  --paper-2: #f6f8fc;
  --paper-3: #eef2f9;
  --white: #ffffff;

  --mint: #2bc8b4;
  --aqua: #38bdd8;
  --leaf: #82c65e;
  --indigo-soft: #eef0ff;

  --grad-page: linear-gradient(180deg, #f3f6fb 0%, #f9fbfe 72%, #ffffff 100%);
  --grad-band: linear-gradient(135deg, #4046d8 0%, #2b2f9e 100%);
  --grad-btn: linear-gradient(180deg, #4a50e2, #4046d8);
  --grad-btn-hover: linear-gradient(180deg, #4046d8, #3238b4);
  --grad-logo: linear-gradient(135deg, #2bc8b4 0%, #38bdd8 45%, #4046d8 100%);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 14px 32px -28px rgba(15, 23, 42, 0.28);
  --shadow: 0 6px 18px rgba(15, 23, 42, 0.06), 0 30px 70px -44px rgba(15, 23, 42, 0.35);
  --shadow-band: 0 30px 70px -42px rgba(32, 32, 100, 0.5);

  --radius: 8px;
  --radius-sm: 6px;
  --radius-lg: 8px;
  --max: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font-display: "Montserrat", "Noto Sans SC", "PingFang SC",
    -apple-system, BlinkMacSystemFont, "Microsoft YaHei", sans-serif;
  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

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

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

.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;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: 0;
  color: var(--ink);
  font-weight: 600;
  text-wrap: balance;
}

h1 {
  max-width: 22ch;
  font-size: clamp(40px, 5vw, 68px);
  font-weight: 600;
}

h2 {
  font-size: clamp(25px, 3.2vw, 38px);
  font-weight: 600;
}

h3 {
  font-size: 19.5px;
  font-weight: 600;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-display);
  color: var(--indigo);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 26px;
  height: 2px;
  content: "";
  background: currentColor;
  border-radius: var(--radius-sm);
  opacity: 0.9;
}

/* 靛蓝色带上的标题统一为白色 */
.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: var(--white);
}

/* ============================================================
   有机气泡 / 圆环装饰（hero 与 page-hero 共用）
   ============================================================ */
.hero-blobs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  display: none;
}

.hero-blobs i {
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(52px);
  opacity: 0.62;
}

.hero-blobs i:nth-child(1) {
  width: 560px;
  height: 560px;
  top: -140px;
  right: -120px;
  background: radial-gradient(circle at 32% 32%, #93f0cb, #5fd9c0 70%);
  animation: drift 17s var(--ease) infinite alternate;
}

.hero-blobs i:nth-child(2) {
  width: 480px;
  height: 480px;
  bottom: -160px;
  left: -140px;
  background: radial-gradient(circle at 60% 40%, #a5ecf2, #7adfe2 70%);
  animation: drift 21s var(--ease) infinite alternate-reverse;
}

.hero-blobs i:nth-child(3) {
  width: 420px;
  height: 420px;
  top: 30%;
  left: 42%;
  background: radial-gradient(circle at 40% 60%, #c2f3b4, #8fe8c8 75%);
  opacity: 0.5;
  animation: drift 25s var(--ease) infinite alternate;
}

/* 细圆环线 */
.hero-blobs em {
  position: absolute;
  display: block;
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  filter: none;
}

.hero-blobs em:nth-of-type(1) {
  width: 220px;
  height: 220px;
  top: 16%;
  right: 18%;
}

.hero-blobs em:nth-of-type(2) {
  width: 90px;
  height: 90px;
  bottom: 22%;
  left: 12%;
  border-color: rgba(255, 255, 255, 0.8);
}

@keyframes drift {
  to {
    transform: translate(36px, 28px) scale(1.07);
  }
}

/* ============================================================
   头部导航 — 通透玻璃，深靛蓝文字
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px clamp(18px, 4vw, 52px);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 1px 0 rgba(17, 24, 39, 0.02);
  backdrop-filter: blur(18px) saturate(1.35);
  -webkit-backdrop-filter: blur(18px) saturate(1.35);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
    padding 0.4s var(--ease);
}

.site-header.solid,
.site-header.is-scrolled {
  padding-block: 11px;
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--line-soft);
  box-shadow: 0 12px 34px -28px rgba(15, 23, 42, 0.3);
}

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

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--grad-btn);
  border-radius: 8px;
  box-shadow: 0 10px 24px -16px rgba(52, 50, 184, 0.7);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.005em;
  color: var(--ink);
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

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

.site-nav a {
  position: relative;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14.5px;
  font-weight: 550;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.site-nav a::after {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 28px;
  height: 2px;
  content: "";
  background: var(--indigo);
  border-radius: var(--radius-sm);
  transform: translateX(-50%) scale(0);
  transition: transform 0.25s var(--ease);
}

.site-nav a:hover {
  color: var(--indigo);
}

.site-nav a.is-active {
  color: var(--indigo);
  font-weight: 600;
}

.site-nav a.is-active:not(.nav-cta)::after {
  transform: translateX(-50%) scale(1);
}

.site-nav .nav-cta {
  margin-left: 12px;
  padding: 10px 20px;
  color: var(--white);
  font-weight: 600;
  background: var(--grad-btn);
  border: 1px solid transparent;
  border-radius: var(--radius);
  box-shadow: 0 14px 28px -18px rgba(52, 50, 184, 0.72);
  transition: background 0.25s, color 0.25s, transform 0.25s var(--ease),
    box-shadow 0.25s;
}

.site-nav .nav-cta::after {
  display: none;
}

.site-nav .nav-cta:hover {
  color: var(--white);
  background: var(--grad-btn-hover);
  transform: translateY(-1px);
  box-shadow: 0 18px 34px -18px rgba(52, 50, 184, 0.75);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 1.8px;
  margin: 4.5px auto;
  background: currentColor;
  border-radius: 2px;
}

/* ============================================================
   首页 Hero — 渐变气泡场 + 超宽字距大字
   ============================================================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 760px;
  padding: 108px clamp(28px, 5vw, 64px) 92px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.92) 45%, rgba(241, 248, 250, 0.7) 100%),
    var(--grad-page);
  border-bottom: 1px solid var(--line-soft);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(450px, 0.86fr) minmax(560px, 1.14fr);
  gap: clamp(32px, 4vw, 56px);
  width: min(100%, 1320px);
  margin: 0 auto;
  align-items: center;
}

.hero-copy > * {
  animation: fadeUp 0.9s var(--ease) both;
}

.hero-copy > .eyebrow {
  animation-delay: 0.05s;
}
.hero-copy > h1 {
  animation-delay: 0.14s;
}
.hero-copy > .lead {
  animation-delay: 0.24s;
}
.hero-copy > .hero-actions {
  animation-delay: 0.34s;
}
.hero-copy > .trust-row {
  animation-delay: 0.44s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 超宽字距拉丁大字（截图 NEUROTEST 式） */
.hero h1 {
  max-width: none;
}

.hero-word {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(88px, 9.3vw, 140px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: 0;
  margin-right: 0;
  color: var(--indigo);
}

.hero-sub {
  display: block;
  max-width: none;
  margin-top: 20px;
  color: #05070d;
  font-size: clamp(34px, 3.5vw, 50px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.15;
}

.hero-en {
  display: block;
  margin-top: 8px;
  color: #6f7580;
  font-family: var(--font-sans);
  font-size: clamp(21px, 1.8vw, 30px);
  font-weight: 400;
  line-height: 1.35;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 26px;
  color: #3f4654;
  font-size: 14px;
}

.hero-meta span {
  padding-right: 22px;
  margin-right: 22px;
  border-right: 1px solid var(--line);
}

.hero-meta span:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: 0;
}

.lead {
  max-width: 54ch;
  margin: 30px 0 0;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 56px;
  padding: 0 34px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, transform 0.25s var(--ease),
    box-shadow 0.25s, color 0.25s;
}

.button-primary {
  color: var(--white);
  background: var(--grad-btn);
  box-shadow: 0 16px 30px -18px rgba(52, 50, 184, 0.72);
}

.button-primary:hover {
  background: var(--grad-btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 38px -18px rgba(52, 50, 184, 0.74);
}

.button-secondary {
  color: var(--indigo);
  background: rgba(255, 255, 255, 0.88);
  border-color: var(--indigo);
}

.button-secondary:hover {
  color: var(--white);
  background: var(--indigo);
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -16px rgba(67, 56, 202, 0.6);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 38px;
}

.hero-capabilities {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
  max-width: 520px;
  margin-top: 46px;
}

.hero-capabilities div {
  display: grid;
  gap: 7px;
  align-content: start;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.45;
}

.hero-capabilities span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  border: 1px solid rgba(52, 50, 184, 0.25);
  border-radius: 50%;
}

.hero-capabilities strong {
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.3;
}

.hero-capabilities small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.trust-row span,
.rfq-tags span {
  padding: 8px 15px;
  font-size: 13px;
  font-weight: 550;
  color: var(--indigo-dark);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px -26px rgba(15, 23, 42, 0.35);
}

/* DMT 3D 分子结构舞台 */
.hero-molecule {
  position: relative;
  display: block;
  min-width: 0;
  min-height: 650px;
  overflow: hidden;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  animation: fadeUp 0.9s var(--ease) 0.4s both;
}

.hero-molecule::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0) 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0) 72%, rgba(255, 255, 255, 0.9) 100%);
  pointer-events: none;
}

.hero-product-media {
  position: absolute;
  inset: -8px -26px -20px -6px;
  margin: 0;
}

.hero-product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: saturate(0.98) contrast(1.01);
}

.molecule-stage {
  position: relative;
  display: grid;
  z-index: 2;
  width: min(54%, 390px);
  min-height: 390px;
  margin: 58px 0 0 44px;
  aspect-ratio: 0.92;
  place-items: center;
  overflow: visible;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(67, 201, 216, 0.46);
  border-radius: var(--radius-lg);
  box-shadow: 0 28px 64px -42px rgba(15, 23, 42, 0.42);
  backdrop-filter: blur(13px) saturate(1.2);
  -webkit-backdrop-filter: blur(13px) saturate(1.2);
  isolation: isolate;
}

.molecule-stage::before,
.molecule-stage::after {
  position: absolute;
  content: "";
  border-radius: 50%;
  pointer-events: none;
}

.molecule-stage::before {
  inset: 18px;
  border: 1px solid rgba(67, 201, 216, 0.3);
  border-radius: var(--radius-sm);
}

.molecule-stage::after {
  inset: auto 20px 20px auto;
  width: 72px;
  height: 3px;
  background: var(--aqua);
  border: 0;
  border-radius: var(--radius);
  transform: none;
}

.molecule-canvas {
  position: relative;
  z-index: 1;
  width: min(90%, 360px);
  height: min(90%, 360px);
  cursor: grab;
  touch-action: none;
}

.molecule-canvas:active {
  cursor: grabbing;
}

.molecule-caption {
  position: absolute;
  right: 24px;
  bottom: 26px;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
  max-width: 210px;
}

.molecule-caption span,
.molecule-caption strong {
  display: inline-grid;
  min-width: 32px;
  height: 32px;
  place-items: center;
  padding: 0 10px;
  color: var(--indigo-dark);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(67, 56, 202, 0.14);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 24px -18px rgba(35, 32, 102, 0.5);
}

.molecule-caption span:nth-child(2) {
  color: #b22234;
}

.molecule-caption span:nth-child(3) {
  color: var(--muted);
}

.molecule-identity {
  position: absolute;
  left: 44px;
  bottom: 38px;
  z-index: 2;
  width: min(52%, 360px);
  padding: 24px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: 0 26px 60px -42px rgba(15, 23, 42, 0.48);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
}

.molecule-identity::after {
  display: none;
}

.molecule-identity .eyebrow {
  color: #047b83;
}

.molecule-identity .eyebrow::before {
  background: currentColor;
}

.card-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.molecule-identity h2 {
  margin-top: 6px;
  color: var(--ink);
  font-size: 22px;
}

.molecule-identity .key-value {
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.molecule-identity .key-value div {
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 0;
  padding: 11px 12px;
}

.molecule-identity .key-value div:last-child {
  border-bottom: 0;
}

.molecule-identity .key-value dt {
  color: var(--muted);
}

.molecule-identity .key-value dd {
  color: var(--ink);
}

/* ============================================================
   内页 Hero — 同款渐变气泡，但深靛蓝标题
   ============================================================ */
.page-main {
  padding-top: 72px;
}

.page-hero {
  position: relative;
  padding: clamp(56px, 7vw, 88px) max(clamp(18px, 4vw, 52px), calc((100% - var(--max)) / 2));
  overflow: hidden;
  background: var(--grad-page);
  border-bottom: 1px solid var(--line-soft);
}

.page-hero::before,
.page-hero::after {
  display: none;
}

.page-hero::before {
  width: 480px;
  height: 480px;
  top: -180px;
  right: -100px;
  background: radial-gradient(circle at 35% 35%, #97f0cd, #66dcc2 70%);
  opacity: 0.55;
}

.page-hero::after {
  width: 380px;
  height: 380px;
  bottom: -180px;
  left: 8%;
  background: radial-gradient(circle at 60% 40%, #a9edf3, #7fe0e3 70%);
  opacity: 0.45;
}

.page-hero > * {
  position: relative;
  z-index: 1;
  width: auto;
  margin-inline: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-size: 13.5px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--indigo);
}

.breadcrumb span[aria-hidden] {
  color: var(--muted-2);
}

.breadcrumb [aria-current="page"] {
  color: var(--text);
  font-weight: 500;
}

.page-hero h1 {
  color: var(--ink);
}

.page-hero p:last-child {
  max-width: 66ch;
  margin-top: 20px;
  color: var(--text);
  font-size: clamp(16px, 1.4vw, 18.5px);
}

/* ============================================================
   指标条（首页）— 悬浮白卡
   ============================================================ */
.metric-strip {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 58px -42px rgba(15, 23, 42, 0.34);
  transform: translateY(-56px);
}

.metric-strip div {
  padding: 28px 30px;
  background: transparent;
  border-right: 1px solid var(--line-soft);
  border-radius: 0;
  box-shadow: none;
  transition: background 0.25s;
}

.metric-strip div:last-child {
  border-right: 0;
}

.metric-strip div:hover {
  background: var(--paper-2);
}

.metric-strip strong,
.metric-strip span {
  display: block;
}

.metric-strip strong {
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.metric-strip span {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

/* ============================================================
   通用 Section
   ============================================================ */
.section {
  padding: clamp(46px, 5.5vw, 72px) clamp(18px, 4vw, 52px);
  background: var(--paper);
}

.section-soft {
  background: linear-gradient(180deg, #f8fbfd 0%, #f2f8f9 100%);
}

/* 「深色段」语义 → 靛蓝渐变色带 */
.section-dark {
  position: relative;
  color: var(--white);
  background: var(--grad-band);
  overflow: hidden;
}

.section-dark::before,
.section-dark::after {
  display: none;
}

.section-dark::before {
  width: 460px;
  height: 460px;
  top: -200px;
  right: -120px;
  background: radial-gradient(circle, rgba(141, 233, 200, 0.4), transparent 70%);
}

.section-dark::after {
  width: 420px;
  height: 420px;
  bottom: -200px;
  left: -100px;
  background: radial-gradient(circle, rgba(122, 223, 226, 0.32), transparent 70%);
}

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

.section-heading,
.feature-grid,
.about-layout,
.grade-layout,
.two-column,
.solution-grid,
.quote-grid,
.metric-board,
.document-grid,
.timeline,
.table-wrap,
.check-grid,
.process-line,
.number-grid,
.route-map,
.article-list,
.keyword-groups,
.section-media,
.section-visual,
.cta-band,
.inquiry-section,
.grade-overview,
.grade-showcase,
.home-process,
.document-strip,
.contact-cards,
.seo-link-grid {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.section-heading {
  max-width: var(--max);
  margin-bottom: clamp(30px, 4vw, 48px);
}

.section-heading.split {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max);
}

.section-heading p:last-child {
  max-width: 70ch;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-dark .eyebrow {
  color: var(--mint);
}

.section-dark .eyebrow::before {
  background: var(--mint);
}

.section-dark .section-heading p:last-child {
  color: rgba(255, 255, 255, 0.78);
}

.inline-link {
  color: var(--indigo);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: rgba(67, 56, 202, 0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}

.inline-link:hover {
  text-decoration-color: var(--indigo);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--indigo);
  font-weight: 600;
}

.text-link::after {
  content: "→";
  transition: transform 0.25s var(--ease);
}

.text-link:hover::after {
  transform: translateX(5px);
}

.section-dark .text-link {
  color: var(--mint);
}

.text-link.inline {
  display: inline;
}

.text-link.inline::after {
  content: none;
}

.section-note {
  width: min(100%, var(--max));
  margin: 22px auto 0;
}

/* ============================================================
   网格
   ============================================================ */
.feature-grid,
.grade-overview,
.solution-grid,
.quote-grid,
.document-grid,
.metric-board,
.timeline,
.number-grid {
  display: grid;
  gap: 16px;
}

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

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

.feature-grid.four,
.grade-overview,
.solution-grid,
.quote-grid,
.timeline {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-grid.five {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* 卡片基础 — 大圆角白卡，柔和阴影 */
.feature-grid article,
.grade-overview article,
.solution-grid article,
.quote-grid article,
.document-grid article,
.panel,
.statement-card,
.table-wrap,
.inquiry-form,
.export-box {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}

.feature-grid article:hover,
.grade-overview article:hover,
.solution-grid article:hover,
.document-grid article:hover,
.quote-grid article:hover {
  transform: translateY(-3px);
  border-color: rgba(52, 50, 184, 0.22);
  box-shadow: var(--shadow);
}

.feature-grid article h3,
.grade-overview article h3,
.solution-grid article h3,
.document-grid article h3 {
  margin-top: 14px;
}

.feature-grid span,
.solution-grid span,
.document-grid span,
.grade-overview span {
  display: inline-flex;
  align-items: center;
  padding: 5px 13px;
  font-family: var(--font-display);
  color: var(--indigo);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--indigo-soft);
  border-radius: var(--radius-sm);
}

/* 媒体 */
.section-media {
  margin-bottom: 30px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.section-media img {
  width: 100%;
  height: clamp(280px, 38vw, 420px);
  object-fit: cover;
}

.section-media.on-dark {
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

.section-visual {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: center;
}

.visual-copy p:last-child {
  max-width: 56ch;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.visual-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.visual-media img {
  width: 100%;
  height: clamp(300px, 40vw, 440px);
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.visual-media:hover img {
  transform: scale(1.03);
}

/* 文字色 */
.feature-grid p,
.grade-overview p,
.solution-grid p,
.quote-grid span,
.document-grid p,
.panel p,
.clean-list,
.mini-list p,
.article-list li {
  color: var(--muted);
}

/* 靛蓝带上的玻璃卡 */
.dark-cards article,
.section-dark .timeline li {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: none;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.dark-cards article:hover,
.section-dark .timeline li:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
}

.dark-cards p,
.section-dark .timeline p {
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================================
   关于 / 两栏
   ============================================================ */
.about-layout,
.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 20px;
}

.statement-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
  color: var(--white);
  background: var(--grad-band);
  border: 0;
  box-shadow: var(--shadow-band);
}

.statement-card span {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px 13px;
  font-family: var(--font-display);
  color: var(--indigo-dark);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--mint);
  border-radius: var(--radius-sm);
}

.statement-card h2 {
  margin-top: 44px;
  color: var(--white);
  font-size: clamp(23px, 2.3vw, 29px);
  font-weight: 600;
  line-height: 1.35;
}

.key-value {
  display: grid;
  gap: 1px;
  margin: 18px 0 0;
  padding: 0;
  overflow: hidden;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.key-value div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  padding: 13px 15px;
  background: var(--white);
}

.key-value dt {
  color: var(--muted);
  font-size: 14px;
}

.key-value dd {
  margin: 0;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   产品等级
   ============================================================ */
.grade-layout {
  display: grid;
  grid-template-columns: 344px minmax(0, 1fr);
  gap: 20px;
}

.grade-tabs {
  display: grid;
  gap: 12px;
  align-content: start;
}

.grade-tab {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 4px 14px;
  width: 100%;
  padding: 18px;
  color: var(--text);
  text-align: left;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, transform 0.25s var(--ease),
    box-shadow 0.25s, color 0.25s;
}

.grade-tab:hover {
  border-color: rgba(67, 56, 202, 0.3);
  transform: translateX(3px);
}

.grade-tab span {
  grid-row: span 2;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  color: var(--indigo);
  font-family: var(--font-display);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  background: var(--indigo-soft);
  border-radius: var(--radius-sm);
}

.grade-tab strong {
  font-size: 16.5px;
  font-weight: 650;
  color: var(--ink);
}

.grade-tab small {
  color: var(--muted);
  font-size: 13px;
}

.grade-tab.is-active {
  color: var(--white);
  background: var(--grad-band);
  border-color: transparent;
  box-shadow: var(--shadow-band);
}

.grade-tab.is-active strong {
  color: var(--white);
}

.grade-tab.is-active span {
  color: var(--indigo-dark);
  background: var(--mint);
}

.grade-tab.is-active small {
  color: rgba(255, 255, 255, 0.78);
}

.grade-panel {
  min-height: 400px;
  padding: clamp(28px, 3vw, 40px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.grade-panel h3 {
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 600;
}

.grade-copy {
  max-width: 64ch;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16.5px;
}

.grade-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 26px;
}

.grade-tags span {
  padding: 8px 15px;
  color: var(--indigo);
  font-size: 13px;
  font-weight: 600;
  background: var(--indigo-soft);
  border-radius: var(--radius-sm);
}

.spec-table {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.spec-table div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 15px;
  background: var(--white);
}

.spec-table dt {
  color: var(--muted);
}

.spec-table dd {
  margin: 0;
  font-weight: 600;
  color: var(--ink);
}

.grade-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(340px, 0.86fr);
  gap: 22px;
  align-items: stretch;
}

.grade-spec-card {
  display: grid;
  gap: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.compact-table {
  width: 100%;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.compact-table th,
.compact-table td {
  padding: 17px 20px;
  font-size: 14.5px;
}

.compact-table th {
  color: var(--ink);
  background: #fbfcfe;
}

.compact-table td:first-child {
  font-weight: 650;
  color: var(--indigo);
}

.compact-table a {
  color: var(--indigo);
}

.grade-proof-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
}

.grade-proof-row span {
  display: grid;
  gap: 5px;
  min-height: 86px;
  padding: 18px 20px;
  color: var(--muted);
  font-size: 13.5px;
  border-right: 1px solid var(--line-soft);
}

.grade-proof-row span:last-child {
  border-right: 0;
}

.grade-proof-row strong {
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.grade-image {
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.grade-image img {
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
}

/* ============================================================
   列表 / 流程 / 编号
   ============================================================ */
.mini-list,
.clean-list {
  display: grid;
  gap: 11px;
  margin: 18px 0 0;
  padding-left: 20px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.check-grid.compact {
  width: auto;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 20px 0 0;
}

.check-grid span {
  padding: 13px 16px;
  color: var(--text);
  font-weight: 500;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.25s, background 0.25s, color 0.25s;
}

.check-grid span:hover {
  border-color: var(--indigo);
  background: var(--indigo-soft);
  color: var(--indigo-dark);
}

.check-grid span::before {
  margin-right: 9px;
  color: var(--indigo);
  font-weight: 700;
  content: "✓";
}

.process-line {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  align-items: center;
}

.process-line span {
  display: grid;
  place-items: center;
  min-height: 80px;
  padding: 14px;
  text-align: center;
  font-weight: 550;
  font-size: 14.5px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.process-line span:last-child {
  color: var(--white);
  background: var(--grad-btn);
  border-color: transparent;
}

.process-line i {
  display: none;
}

.home-process {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.home-process a {
  position: relative;
  display: grid;
  align-content: start;
  min-height: 190px;
  padding: 26px 20px 24px;
  border-right: 1px solid var(--line-soft);
  transition: background 0.25s, transform 0.25s var(--ease);
}

.home-process a:last-child {
  border-right: 0;
}

.home-process a:hover {
  background: var(--paper-2);
}

.home-process a:not(:last-child)::after {
  position: absolute;
  right: -12px;
  top: 44px;
  z-index: 2;
  width: 24px;
  height: 1px;
  content: "";
  background: var(--aqua);
}

.home-process span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  border: 1px solid rgba(52, 50, 184, 0.2);
  border-radius: 50%;
  background: var(--white);
}

.home-process strong {
  margin-top: 18px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.35;
}

.home-process small {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.65;
}

.number-grid {
  padding: 0;
  list-style: none;
  counter-reset: item;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.number-grid li {
  min-height: 120px;
  padding: 24px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  counter-increment: item;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.3s, border-color 0.3s, transform 0.3s var(--ease);
}

.number-grid li:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-3px);
}

.number-grid li::before {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 14px;
  color: var(--indigo-dark);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: var(--mint);
  border-radius: 50%;
  content: counter(item, decimal-leading-zero);
}

/* ============================================================
   方案 / 问答 / 指标板
   ============================================================ */
.solution-grid a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--indigo);
  font-weight: 600;
  font-size: 14.5px;
}

.solution-grid a::after {
  content: "→";
  transition: transform 0.25s var(--ease);
}

.solution-grid a:hover::after {
  transform: translateX(5px);
}

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

.quote-grid article {
  display: flex;
  flex-direction: column;
}

.quote-grid q {
  display: block;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  quotes: "“" "”";
}

.quote-grid q::before {
  display: block;
  margin-bottom: 8px;
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  line-height: 0.6;
  content: "“";
}

.quote-grid span {
  display: block;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.65;
}

.metric-board {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.metric-board div {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 118px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.25s;
}

.metric-board div:hover {
  border-color: rgba(67, 56, 202, 0.22);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.metric-board span {
  font-family: var(--font-display);
  color: var(--indigo);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.metric-board strong {
  font-size: 21px;
  font-weight: 650;
  color: var(--ink);
}

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

.document-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.document-strip a {
  display: grid;
  gap: 8px;
  min-height: 138px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ease);
}

.document-strip a:hover {
  border-color: rgba(52, 50, 184, 0.24);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.document-strip span {
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.document-strip strong {
  color: var(--ink);
  font-size: 17px;
}

.document-strip small {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

/* ============================================================
   时间线
   ============================================================ */
.timeline {
  padding: 0;
  list-style: none;
}

.service-timeline {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 12px;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.service-timeline li {
  position: relative;
  min-height: 255px;
  padding: 24px 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.service-timeline li:hover {
  border-color: rgba(67, 56, 202, 0.22);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.service-timeline span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  color: var(--indigo-dark);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: var(--mint);
  border-radius: 50%;
}

.service-timeline h3 {
  margin-top: 18px;
  font-size: 17px;
}

.service-timeline p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.timeline li {
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.timeline li:hover {
  transform: translateY(-4px);
}

.timeline h3 {
  margin-top: 16px;
}

.timeline p {
  margin-top: 10px;
}

.timeline span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--indigo-dark);
  font-family: var(--font-display);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: var(--mint);
  border-radius: 50%;
}

/* ============================================================
   表格
   ============================================================ */
.table-wrap {
  padding: 0;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}

th,
td {
  padding: 16px 20px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
  border-bottom: 1px solid var(--line-soft);
}

th {
  color: var(--indigo-dark);
  font-weight: 650;
  background: var(--paper-2);
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover td {
  background: var(--paper-2);
}

/* ============================================================
   路线图
   ============================================================ */
.route-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: stretch;
}

.route-map .node {
  display: grid;
  place-items: center;
  min-height: 92px;
  padding: 16px;
  text-align: center;
  font-weight: 600;
  font-size: 14.5px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.route-map .key {
  color: var(--white);
  background: var(--grad-btn);
  border-color: transparent;
}

.route-map .muted {
  color: var(--muted);
  background: var(--paper-2);
}

.route-map i {
  display: none;
}

/* ============================================================
   文章 / 关键词（归档页兼容）
   ============================================================ */
.article-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 22px;
  padding-left: 20px;
}

.keyword-groups {
  display: grid;
  gap: 12px;
}

.keyword-groups div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.keyword-groups strong {
  color: var(--indigo);
}

.keyword-groups span {
  color: var(--muted);
}

/* ============================================================
   SEO 入口卡片
   ============================================================ */
.seo-link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.seo-link-grid.compact {
  gap: 14px;
}

.seo-card {
  display: grid;
  gap: 9px;
  min-height: 178px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.seo-card:hover {
  border-color: rgba(67, 56, 202, 0.24);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.seo-card span {
  display: inline-flex;
  width: fit-content;
  padding: 5px 13px;
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--indigo-soft);
  border-radius: var(--radius-sm);
}

.seo-card strong {
  color: var(--ink);
  font-size: 19px;
  line-height: 1.4;
}

.seo-card small {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.article-list a,
.feature-grid article h3 a {
  color: var(--ink);
}

.article-list a:hover,
.feature-grid article h3 a:hover {
  color: var(--indigo);
}

/* ============================================================
   专业文章
   ============================================================ */
.article-hub {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  width: min(100%, var(--max));
  margin-inline: auto;
}

.article-hub a {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 230px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
}

.article-hub a:hover {
  border-color: rgba(67, 56, 202, 0.24);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.article-hub span,
.article-kicker span {
  display: inline-flex;
  width: fit-content;
  padding: 5px 12px;
  color: var(--indigo);
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--indigo-soft);
  border-radius: var(--radius);
}

.article-hub strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.42;
}

.article-hub small {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.65;
}

.technical-article {
  width: min(100%, 980px);
  margin: 0 auto clamp(42px, 6vw, 72px);
  padding: clamp(28px, 4vw, 52px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 98px;
}

.technical-article:last-child {
  margin-bottom: 0;
}

.article-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.technical-article h2 {
  max-width: 24ch;
  font-size: clamp(26px, 3.2vw, 40px);
}

.article-lead {
  max-width: 70ch;
  margin: 18px 0 0;
  color: var(--text);
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.8;
}

.article-body {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.article-body p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.technical-article .table-wrap,
.technical-article .feature-grid,
.technical-article .route-map {
  width: 100%;
}

.technical-article .feature-grid {
  margin-block: 2px;
}

.article-callout {
  padding: 22px;
  color: var(--white);
  background: var(--grad-band);
  border-radius: var(--radius);
  box-shadow: 0 24px 52px -34px rgba(53, 45, 168, 0.55);
}

.article-callout strong {
  display: block;
  color: var(--mint);
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.article-callout p {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.82);
}

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

/* ============================================================
   资料下载 / 工具包
   ============================================================ */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: min(100%, var(--max));
  margin-inline: auto;
}

.resource-grid a {
  display: grid;
  gap: 10px;
  min-height: 188px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
}

.resource-grid a:hover {
  border-color: rgba(67, 56, 202, 0.24);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.resource-grid span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--indigo-dark);
  font-family: var(--font-display);
  font-weight: 700;
  background: var(--mint);
  border-radius: 50%;
}

.resource-grid strong {
  color: var(--ink);
  font-size: 19px;
  line-height: 1.4;
}

.resource-grid small {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.resource-section {
  width: min(100%, var(--max));
  margin: 0 auto clamp(46px, 6vw, 72px);
  scroll-margin-top: 96px;
}

.resource-section:last-child {
  margin-bottom: 0;
}

.worksheet {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 20px;
  align-items: start;
}

.worksheet-intro {
  padding: 28px;
  color: var(--white);
  background: var(--grad-band);
  border-radius: var(--radius);
  box-shadow: var(--shadow-band);
}

.worksheet-intro h3 {
  color: var(--white);
}

.worksheet-intro p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.resource-note {
  max-width: 78ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ============================================================
   FAQ 页面
   ============================================================ */
.faq-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  width: min(100%, var(--max));
  margin-inline: auto;
  align-items: start;
}

.faq-index {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.faq-index a {
  padding: 10px 13px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.faq-index a:hover {
  color: var(--indigo);
  background: var(--indigo-soft);
}

.faq-groups {
  display: grid;
  gap: 26px;
}

.faq-group {
  padding: clamp(26px, 3vw, 34px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 100px;
}

.faq-group h2 {
  margin-bottom: 20px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 18px;
  color: var(--ink);
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--indigo);
  font-size: 20px;
  line-height: 1;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  content: "+";
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ============================================================
   CTA / 询盘 / 联系卡
   ============================================================ */
.cta-band {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(36px, 4vw, 60px);
  color: var(--white);
  background: var(--grad-band);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-band);
  overflow: hidden;
}

.cta-band::after {
  display: none;
}

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

.cta-band h2 {
  color: var(--white);
}

.cta-band p:last-child {
  max-width: 60ch;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.8);
}

.cta-band .eyebrow {
  color: var(--mint);
}

.cta-band .eyebrow::before {
  background: var(--mint);
}

.cta-band .button-primary {
  color: var(--indigo-dark);
  background: var(--white);
  box-shadow: 0 18px 36px -16px rgba(15, 18, 60, 0.5);
}

.cta-band .button-primary:hover {
  background: var(--mint);
}

.section-dark .cta-band.flat {
  width: min(100%, var(--max));
  padding: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}

.section-dark .cta-band.flat::after {
  display: none;
}

.inquiry-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.inquiry-copy {
  color: var(--text);
}

.inquiry-copy p:not(.eyebrow) {
  color: var(--muted);
}

.export-box {
  margin-top: 22px;
  color: var(--text);
  background: var(--paper-2);
  box-shadow: none;
}

.export-box h3 {
  margin-bottom: 8px;
}

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

.contact-cards article {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.contact-cards span {
  display: inline-flex;
  padding: 5px 13px;
  font-family: var(--font-display);
  color: var(--indigo);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--indigo-soft);
  border-radius: var(--radius-sm);
}

.contact-cards h3 {
  margin-top: 14px;
}

.contact-cards p {
  margin: 8px 0 0;
  color: var(--muted);
}

.inquiry-form {
  display: grid;
  gap: 16px;
  color: var(--text);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

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

.inquiry-form label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.inquiry-form input:not([type="checkbox"]):not([type="radio"]),
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  padding: 13px 16px;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder {
  color: var(--muted-2);
}

.inquiry-form input:not([type="checkbox"]):not([type="radio"]):focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  background: var(--white);
  border-color: var(--indigo);
  box-shadow: 0 0 0 4px rgba(67, 56, 202, 0.14);
}

.form-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.form-options label {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  font-weight: 500;
  white-space: nowrap;
  color: var(--muted);
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.form-options label:hover {
  border-color: var(--indigo);
  color: var(--indigo-dark);
  background: var(--indigo-soft);
}

.form-options input {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  margin: 0;
  accent-color: var(--indigo);
}

.form-submit {
  width: 100%;
}

.form-submit:disabled {
  cursor: progress;
  opacity: 0.72;
}

.botcheck-field {
  display: none;
}

.form-note {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.form-note.is-success {
  color: var(--indigo);
  font-weight: 600;
}

.form-note.is-error {
  color: #b42318;
  font-weight: 600;
}

/* ============================================================
   企业页脚 — 信息型深色页脚
   ============================================================ */
.site-footer {
  position: relative;
  padding: clamp(58px, 7vw, 86px) clamp(18px, 4vw, 52px) 28px;
  color: rgba(255, 255, 255, 0.78);
  background:
    radial-gradient(circle at 14% 8%, rgba(189, 242, 218, 0.18), transparent 30%),
    radial-gradient(circle at 84% 20%, rgba(171, 233, 238, 0.15), transparent 32%),
    linear-gradient(160deg, #30299d 0%, #241e7d 48%, #15124d 100%);
  overflow: hidden;
}

.site-footer::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 72%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max));
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(260px, 1.55fr) repeat(4, minmax(140px, 0.75fr));
  gap: clamp(24px, 3vw, 42px);
  align-items: start;
}

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

.footer-logo strong,
.footer-logo small {
  display: block;
}

.footer-logo strong {
  color: var(--white);
  font-size: 18px;
  line-height: 1.2;
}

.footer-logo small {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.62);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-brand p {
  max-width: 42ch;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14.5px;
  line-height: 1.8;
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.footer-badges span {
  padding: 7px 12px;
  color: var(--mint);
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-sm);
}

.footer-column,
.footer-contact {
  display: grid;
  gap: 9px;
}

.footer-column h2,
.footer-contact h2 {
  margin: 0 0 8px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-column a {
  width: fit-content;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  transition: color 0.2s, transform 0.2s var(--ease);
}

.footer-column a:hover {
  color: var(--mint);
  transform: translateX(3px);
}

.footer-contact p {
  display: grid;
  gap: 2px;
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  line-height: 1.55;
}

.footer-contact span {
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
  text-transform: uppercase;
}

.footer-rfq {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: clamp(38px, 5vw, 56px);
  padding: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.footer-rfq strong {
  display: block;
  color: var(--white);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.35;
}

.footer-rfq p {
  max-width: 70ch;
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  flex: 0 0 auto;
  color: var(--indigo-dark);
  font-weight: 650;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 16px 32px -16px rgba(10, 12, 50, 0.6);
  transition: background 0.25s, transform 0.25s var(--ease);
}

.footer-cta:hover {
  background: var(--mint);
  transform: translateY(-1px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 13px;
}

.footer-bottom div {
  display: flex;
  gap: 14px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.56);
  font-size: 13px;
}

.footer-bottom a:hover {
  color: var(--mint);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .site-nav a {
    padding-inline: 9px;
    font-size: 13.5px;
  }

  .footer-main {
    grid-template-columns: minmax(260px, 1.2fr) repeat(2, minmax(160px, 1fr));
  }

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

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

  .feature-grid.five,
  .feature-grid.four,
  .grade-overview,
  .solution-grid,
  .quote-grid,
  .timeline,
  .service-timeline,
  .home-process,
  .document-strip,
  .number-grid,
  .metric-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-process a {
    border-right: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
  }

  .home-process a:nth-child(2n) {
    border-right: 0;
  }

  .home-process a:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .home-process a::after {
    display: none;
  }
}

@media (max-width: 980px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: clamp(18px, 4vw, 48px);
    left: clamp(18px, 4vw, 48px);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px;
    color: var(--ink);
    background: var(--white);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .site-nav.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .site-nav a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a.is-active:not(.nav-cta),
  .site-nav a:hover:not(.nav-cta) {
    color: var(--indigo);
    background: var(--indigo-soft);
  }

  .site-nav .nav-cta {
    margin: 6px 0 0;
    text-align: center;
  }

  .hero-grid,
  .about-layout,
  .grade-layout,
  .grade-showcase,
  .two-column,
  .section-visual,
  .inquiry-section,
  .faq-layout {
    grid-template-columns: 1fr;
  }

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

  .article-hub,
  .article-route,
  .resource-grid,
  .worksheet {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-molecule {
    width: 100%;
    max-width: 560px;
    min-height: 600px;
    margin-inline: auto;
  }

  .document-grid,
  .feature-grid.three,
  .article-list,
  .route-map,
  .contact-cards,
  .seo-link-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }

  .metric-strip {
    transform: translateY(-32px);
  }

  .grade-image img {
    min-height: 320px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

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

@media (max-width: 640px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 124px 18px 64px;
  }

  .hero-word {
    font-size: clamp(58px, 19vw, 86px);
    letter-spacing: 0;
    margin-right: 0;
  }

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

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .molecule-stage {
    width: calc(100% - 32px);
    min-height: 300px;
    margin: 16px;
  }

  .hero-molecule {
    min-height: auto;
  }

  .hero-product-media {
    position: relative;
    height: 240px;
  }

  .hero-molecule::before {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.84));
  }

  .molecule-identity {
    position: relative;
    left: auto;
    bottom: auto;
    width: auto;
    margin: 0 16px 16px;
  }

  .molecule-caption {
    right: 18px;
    bottom: 24px;
  }

  .metric-strip,
  .feature-grid.two,
  .feature-grid.three,
  .feature-grid.four,
  .feature-grid.five,
  .grade-overview,
  .solution-grid,
  .quote-grid,
  .document-grid,
  .timeline,
  .service-timeline,
  .home-process,
  .document-strip,
  .metric-board,
  .number-grid,
  .article-list,
  .route-map,
  .process-line,
  .form-row,
  .check-grid,
  .check-grid.compact,
  .contact-cards,
  .seo-link-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip div,
  .metric-strip div:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .metric-strip div:last-child {
    border-bottom: 0;
  }

  .home-process a,
  .home-process a:nth-child(2n),
  .home-process a:nth-last-child(-n + 2) {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .home-process a:last-child {
    border-bottom: 0;
  }

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

  .grade-proof-row span,
  .grade-proof-row span:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .grade-proof-row span:last-child {
    border-bottom: 0;
  }

  .key-value div,
  .spec-table div,
  .keyword-groups div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .faq-index {
    grid-template-columns: 1fr;
  }

  .article-hub,
  .article-route,
  .resource-grid,
  .worksheet {
    grid-template-columns: 1fr;
  }

  .technical-article {
    padding: 24px 18px;
  }

  .faq-list summary {
    align-items: flex-start;
  }

  .statement-card h2 {
    margin-top: 28px;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .footer-rfq {
    padding: 20px;
  }

  .footer-cta {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   首页 v2 — 参考图 1:1 还原层（home-* / spec-* / process / doc / reasons）
   旧首页专属块（.hero / .metric-strip / .grade-* 等）已无标记引用。
   ============================================================ */

.brand-hex {
  width: 38px;
  height: 38px;
  flex: none;
}

.nav-lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-lang svg {
  width: 16px;
  height: 16px;
  opacity: 0.85;
}

.button {
  gap: 8px;
}

.button svg {
  width: 18px;
  height: 18px;
}

/* —— Hero —— */
.home-hero {
  position: relative;
  padding: clamp(44px, 5vw, 76px) clamp(18px, 4vw, 52px) clamp(30px, 3.4vw, 52px);
  background: var(--grad-page);
}

.home-hero-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: clamp(32px, 4.5vw, 64px);
  width: min(100%, 1240px);
  margin: 0 auto;
  align-items: center;
}

.home-hero-copy .eyebrow {
  margin-bottom: 24px;
}

.home-hero h1 {
  display: flex;
  flex-direction: column;
  max-width: none;
}

.home-hero-word {
  font-size: clamp(62px, 7.2vw, 100px);
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 0.95;
  color: var(--indigo);
}

.home-hero-sub {
  margin-top: 12px;
  font-size: clamp(30px, 3.3vw, 42px);
  font-weight: 700;
  color: var(--ink);
}

.home-hero-en {
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 400;
  color: var(--muted);
}

.home-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  row-gap: 6px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--muted);
}

.home-hero-meta span + span {
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.home-hero .lead {
  max-width: 54ch;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.home-caps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
}

.home-caps > div {
  display: grid;
  justify-items: start;
  gap: 2px;
  font-size: 12.5px;
  color: var(--muted);
}

.home-caps svg {
  width: 26px;
  height: 26px;
  margin-bottom: 6px;
  color: var(--indigo);
}

.home-caps strong {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.home-hero-media {
  margin: 0;
}

.home-hero-media img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: var(--shadow);
}

/* —— 指标条 —— */
.home-metrics-wrap {
  padding: 0 clamp(18px, 4vw, 52px);
}

.home-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(100%, 1240px);
  margin: clamp(28px, 3.5vw, 48px) auto 0;
  padding: 24px 8px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.home-metrics > div {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 6px 16px;
}

.home-metrics > div + div {
  border-left: 1px solid var(--line-soft);
}

.home-metrics svg {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  color: var(--indigo);
  opacity: 0.9;
}

.home-metrics strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.2vw, 29px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--indigo);
}

.home-metrics strong em {
  font-size: 0.55em;
  font-style: normal;
  font-weight: 600;
}

.home-metrics span {
  display: block;
  margin-top: 2px;
  font-size: 13.5px;
  color: var(--muted);
}

/* —— 区块副标题 —— */
.section-sub,
.section-heading p.section-sub:last-child {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--muted);
}

/* —— 产品牌号 —— */
.spec-block {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 22px;
  align-items: stretch;
}

.spec-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.spec-card .table-wrap {
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.spec-table thead th {
  background: #f8fafc;
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 600;
}

.spec-table td:first-child a {
  color: var(--indigo);
  font-weight: 650;
}

.spec-table td:first-child a:hover {
  text-decoration: underline;
}

.spec-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1.5px 8px;
  font-size: 11.5px;
  font-style: normal;
  font-weight: 600;
  color: #fff;
  vertical-align: 1px;
  background: var(--indigo);
  border-radius: 999px;
}

.spec-proofs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 18px 20px;
  margin-top: auto;
  background: #fbfcfe;
  border-top: 1px solid var(--line-soft);
}

.spec-proofs > div {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.spec-proofs svg {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  color: var(--indigo);
}

.spec-proofs strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
}

.spec-proofs small {
  display: block;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.spec-photo {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.spec-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* —— 服务流程 —— */
.process-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.process-grid li {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 5px;
  padding: 0 6px;
  text-align: center;
}

.process-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  color: var(--indigo);
  background: var(--white);
  border: 1px solid #e2e8f4;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

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

.process-grid li::after {
  position: absolute;
  top: 32px;
  right: calc(-50% + 44px);
  left: calc(50% + 44px);
  content: "";
  border-top: 2px dotted #c9d3e8;
}

.process-grid li:last-child::after {
  display: none;
}

.process-grid b {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--indigo);
}

.process-grid strong {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.process-grid small {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* —— 质量与文件 —— */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.doc-grid > a {
  display: grid;
  justify-items: start;
  gap: 3px;
  padding: 22px 20px 18px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s, border-color 0.25s;
}

.doc-grid > a:hover {
  border-color: rgba(64, 70, 216, 0.35);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.doc-ico {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 46px;
  margin-bottom: 10px;
  color: #e25555;
}

.doc-ico svg {
  width: 40px;
  height: 40px;
}

.doc-ico i {
  position: absolute;
  bottom: 5px;
  left: 0;
  padding: 1px 5px;
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #fff;
  background: #e25555;
  border-radius: 3px;
}

.doc-reach .doc-ico {
  color: var(--indigo);
}

.doc-reach .doc-ico i {
  background: var(--indigo);
}

.doc-grid strong {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.doc-grid small {
  font-size: 12.5px;
  color: var(--muted);
}

.doc-grid em {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13.5px;
  font-style: normal;
  font-weight: 600;
  color: var(--indigo);
}

.doc-grid em svg {
  width: 15px;
  height: 15px;
}

/* —— 选择德美拓的 4 大理由 —— */
.reasons-band {
  display: grid;
  grid-template-columns: 215px 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
  padding: clamp(26px, 3vw, 40px) clamp(22px, 3vw, 44px);
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
}

.reasons-title {
  display: grid;
  gap: 2px;
  padding-right: clamp(16px, 2vw, 36px);
  border-right: 1px solid var(--line);
}

.reasons-title strong {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.1vw, 25px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.reasons-title em {
  font-size: 1.3em;
  font-style: normal;
  color: var(--indigo);
}

.reasons-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.reasons-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.reasons-list svg {
  flex: none;
  width: 30px;
  height: 30px;
  margin-top: 2px;
  color: var(--indigo);
}

.reasons-list strong {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.reasons-list small {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* —— 响应式 —— */
@media (max-width: 1080px) {
  .home-hero-grid {
    grid-template-columns: 1fr;
  }

  .home-hero-media {
    max-width: 620px;
  }

  .home-metrics {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 16px;
  }

  .home-metrics > div + div {
    border-left: 0;
  }

  .home-metrics > div:nth-child(even) {
    border-left: 1px solid var(--line-soft);
  }

  .spec-block {
    grid-template-columns: 1fr;
  }

  .spec-photo {
    min-height: 280px;
  }

  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 28px;
  }

  .process-grid li::after {
    display: none;
  }

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

  .reasons-band {
    grid-template-columns: 1fr;
  }

  .reasons-title {
    padding: 0 0 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

@media (max-width: 640px) {
  .home-caps {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-metrics {
    grid-template-columns: 1fr 1fr;
  }

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

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

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