/* ==========================================================================
   微馨生物 WEIXIN BIOTECH — 品牌视觉系统
   陕西微馨生物科技有限公司 · 综合型大健康企业
   Palette: 墨青 Ink / 香槟金 Champagne Gold / 象牙白 Ivory
   Type:    中文宋体标题 + 无衬线正文（系统字体，零外部依赖）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --ink: #06171d;
  --ink-soft: #0a2229;
  --ink-deep: #041116;
  --teal: #0f3a3d;
  --teal-deep: #0a2b2f;

  --gold: #c8a878;
  --gold-light: #e3cfa8;
  --gold-deep: #8a6a3c;

  --ivory: #f7f4ed;
  --ivory-deep: #efe9dd;
  --paper: #fbf9f4;
  --white: #ffffff;

  --text: #17262a;
  --muted: #5d6d70;
  --muted-2: #8b9899;

  --line: rgba(23, 38, 42, 0.12);
  --line-strong: rgba(23, 38, 42, 0.2);
  --line-gold: rgba(200, 168, 120, 0.32);
  --line-light: rgba(247, 244, 237, 0.14);
  --line-light-strong: rgba(247, 244, 237, 0.24);

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "Times New Roman", serif;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;

  --container: 1280px;
  --gutter: clamp(20px, 4.2vw, 56px);
  --section-y: clamp(76px, 9.5vw, 148px);
  --header-h: 88px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.33, 1, 0.68, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

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

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

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

button {
  cursor: pointer;
}

p,
h1,
h2,
h3,
h4,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

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

::selection {
  background: rgba(200, 168, 120, 0.32);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

/* 极细颗粒质感：全站叠加，增加印刷品般的温度 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("../img/grain.svg");
  background-size: 180px 180px;
  mix-blend-mode: multiply;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 24px;
  z-index: 10000;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--ivory);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: top 0.3s var(--ease);
}

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

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

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

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

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

.section--dark {
  background: var(--ink);
  color: rgba(247, 244, 237, 0.74);
}

.section--tight {
  padding-block: clamp(56px, 7vw, 96px);
}

.u-mt-0 {
  margin-top: 0 !important;
}

/* 章节编号标签 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section--dark .eyebrow,
.positioning .eyebrow,
.cta-band .eyebrow {
  color: var(--gold);
}

.eyebrow__num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.16em;
  opacity: 0.85;
}

/* 大标题 / 正文 */
.h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 3.35vw, 46px);
  line-height: 1.38;
  letter-spacing: 0.02em;
  color: var(--text);
}

.section--dark .h2,
.positioning .h2,
.cta-band .h2 {
  color: var(--ivory);
}

.h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 2vw, 25px);
  line-height: 1.5;
  letter-spacing: 0.03em;
}

.h2__tag {
  display: inline-block;
  margin-left: 0.6em;
  padding: 0.1em 0.5em;
  border: 1px solid var(--line-gold);
  font-family: var(--sans);
  font-size: 0.28em;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
  vertical-align: middle;
  white-space: nowrap;
}

.lede {
  margin-top: 22px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--muted);
}

.section--dark .lede,
.positioning .lede,
.cta-band .lede {
  color: rgba(247, 244, 237, 0.62);
}

.body-copy {
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
}

.body-copy + .body-copy {
  margin-top: 1.1em;
}

.tone-ink {
  color: var(--text);
}

/* 章节头部：左侧编号 / 右侧标题 */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.3fr) minmax(0, 0.7fr);
  gap: clamp(24px, 4vw, 64px);
  margin-bottom: clamp(44px, 5.5vw, 76px);
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.section-head--dark {
  border-top-color: var(--line-light);
}

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

.section-head__en {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.section--dark .section-head__en,
.positioning .section-head__en {
  color: rgba(247, 244, 237, 0.4);
}

.section-head__main .lede {
  margin-top: 18px;
}

/* 通用文本链接 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
  transition: color 0.35s var(--ease), gap 0.35s var(--ease);
}

.link-arrow svg {
  width: 15px;
  height: 15px;
  transition: transform 0.35s var(--ease);
}

.link-arrow:hover {
  gap: 14px;
  color: var(--text);
}

.link-arrow:hover svg {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 15px 30px;
  border: 1px solid var(--line-gold);
  background: transparent;
  color: var(--gold-light);
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: color 0.45s var(--ease), background-color 0.45s var(--ease), border-color 0.45s var(--ease);
}

.btn svg {
  flex: none;
  width: 16px;
  height: 16px;
  transition: transform 0.45s var(--ease);
}

.btn:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--solid {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.btn--solid:hover {
  background: transparent;
  border-color: var(--gold);
  color: var(--gold);
}

.btn--ghost {
  border-color: var(--line-light-strong);
  color: var(--ivory);
}

.btn--ghost:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.btn--ink {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--ivory);
}

.btn--ink:hover {
  background: transparent;
  color: var(--ink);
}

.btn--outline-ink {
  border-color: var(--line-strong);
  color: var(--text);
}

.btn--outline-ink:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--ivory);
}

.btn--sm {
  padding: 11px 20px;
  font-size: 11.5px;
  letter-spacing: 0.18em;
}

.btn--block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color 0.5s var(--ease), border-color 0.5s var(--ease), backdrop-filter 0.5s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(5, 19, 24, 0.86);
  border-bottom-color: rgba(200, 168, 120, 0.16);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  backdrop-filter: blur(16px) saturate(120%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(20px, 4vw, 56px);
  height: var(--header-h);
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  flex: none;
  color: var(--gold);
}

.brand__mark {
  width: 40px;
  height: 40px;
  flex: none;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
}

.brand__name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--ivory);
  white-space: nowrap;
}

.brand__en {
  font-size: 8.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.85;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 40px);
}

.site-nav__link {
  position: relative;
  padding: 6px 0;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: rgba(247, 244, 237, 0.74);
  transition: color 0.35s var(--ease);
  white-space: nowrap;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.45s var(--ease);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--ivory);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-light);
  background: transparent;
  color: var(--ivory);
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 1px;
  background: currentColor;
  transform: translateX(-50%);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease), top 0.4s var(--ease);
}

.nav-toggle span:nth-child(1) {
  top: 17px;
}

.nav-toggle span:nth-child(2) {
  top: 26px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  top: 21px;
  transform: translateX(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  top: 21px;
  transform: translateX(-50%) rotate(-45deg);
}

/* 移动端全屏菜单 */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 48px;
  padding: calc(var(--header-h) + 40px) var(--gutter) 48px;
  background: var(--ink-deep);
  background-image: radial-gradient(700px 500px at 80% 10%, rgba(200, 168, 120, 0.1), transparent 60%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease), transform 0.5s var(--ease);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav__list a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--serif);
  font-size: clamp(24px, 6.4vw, 32px);
  letter-spacing: 0.12em;
  color: var(--ivory);
}

.mobile-nav__list span {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.mobile-nav__foot {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: rgba(247, 244, 237, 0.5);
}

.mobile-nav__foot a {
  color: var(--gold);
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  padding-block: calc(var(--header-h) + clamp(36px, 5vw, 64px)) clamp(30px, 4vw, 52px);
  background-color: var(--ink-deep);
  background-image:
    radial-gradient(1200px 720px at 82% 12%, rgba(200, 168, 120, 0.13), transparent 62%),
    radial-gradient(900px 640px at 8% 92%, rgba(18, 74, 74, 0.5), transparent 66%),
    linear-gradient(158deg, #041218 0%, #061a21 45%, #08262b 100%);
  color: var(--ivory);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(200, 168, 120, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 168, 120, 0.055) 1px, transparent 1px);
  background-size: 116px 116px;
  -webkit-mask-image: radial-gradient(ellipse 72% 68% at 50% 46%, #000 32%, transparent 78%);
  mask-image: radial-gradient(ellipse 72% 68% at 50% 46%, #000 32%, transparent 78%);
  pointer-events: none;
}

.hero__orb {
  position: absolute;
  top: 4%;
  right: 0;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 168, 120, 0.16), rgba(200, 168, 120, 0) 66%);
  filter: blur(30px);
  pointer-events: none;
  animation: float 16s var(--ease-soft) infinite;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.hero__copy {
  max-width: 660px;
}

.hero__eyebrow {
  margin-bottom: 30px;
  color: var(--gold);
}

.hero__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(40px, 5.55vw, 76px);
  line-height: 1.2;
  letter-spacing: 0.045em;
  color: var(--ivory);
}

.hero__title span {
  display: block;
  white-space: nowrap;
}

.hero__title em {
  font-style: normal;
  color: var(--gold);
}

.hero__title-rule {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 30px;
}

.hero__title-rule::before {
  content: "";
  width: 56px;
  height: 1px;
  background: var(--gold);
  opacity: 0.55;
}

.hero__title-rule span {
  font-size: 10.5px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(247, 244, 237, 0.46);
}

.hero__lede {
  margin-top: 26px;
  max-width: 34em;
  font-size: clamp(14.5px, 1.2vw, 16.5px);
  line-height: 2;
  color: rgba(247, 244, 237, 0.68);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: clamp(30px, 4.4vw, 48px);
}

.hero__meta {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: clamp(36px, 5.5vh, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--line-light);
}

.hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 237, 0.52);
}

.hero__meta-item b {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.hero__scroll {
  position: absolute;
  right: clamp(18px, 2.6vw, 40px);
  bottom: 132px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 9px;
  letter-spacing: 0.32em;
  color: rgba(247, 244, 237, 0.4);
  writing-mode: vertical-rl;
}

.hero__scroll::after {
  content: "";
  width: 1px;
  height: 54px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollLine 2.8s var(--ease-soft) infinite;
  transform-origin: top;
}

/* Hero 环形业务图 */
.hero__visual {
  position: relative;
  width: 100%;
  max-width: 540px;
  aspect-ratio: 1 / 1;
  margin-inline: auto;
  transform: translate3d(calc(var(--mx, 0) * 8px), calc(var(--my, 0) * 8px), 0);
  transition: transform 0.8s var(--ease);
}

.orbit {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.orbit__ring {
  fill: none;
  stroke: rgba(200, 168, 120, 0.18);
  stroke-width: 1;
}

.orbit__ring--soft {
  stroke: rgba(200, 168, 120, 0.09);
}

.orbit__ring--dashed {
  stroke: rgba(247, 244, 237, 0.16);
  stroke-width: 1;
  stroke-dasharray: 2 9;
  transform-box: fill-box;
  transform-origin: center;
  animation: spin 120s linear infinite;
}

.orbit__ticks {
  fill: none;
  stroke: rgba(200, 168, 120, 0.3);
  stroke-width: 9;
  stroke-dasharray: 1 13;
}

.orbit__core {
  fill: var(--gold);
}

.orbit__pulse {
  fill: none;
  stroke: rgba(200, 168, 120, 0.5);
  stroke-width: 1;
  transform-box: fill-box;
  transform-origin: center;
  animation: pulse 4.4s var(--ease-soft) infinite;
}

.orbit-nodes {
  position: absolute;
  inset: 0;
}

.orbit-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 18px;
  border: 1px solid rgba(200, 168, 120, 0.22);
  background: rgba(6, 23, 29, 0.55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transform: translate(-50%, -50%);
  white-space: nowrap;
  transition: border-color 0.4s var(--ease), background-color 0.4s var(--ease);
}

.orbit-node:hover {
  border-color: rgba(200, 168, 120, 0.55);
  background: rgba(10, 34, 41, 0.85);
}

.orbit-node__idx {
  font-family: var(--serif);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.orbit-node__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 237, 0.88);
}

.orbit-node--1 {
  top: 9%;
  left: 50%;
}

.orbit-node--2 {
  top: 50%;
  left: 89%;
}

.orbit-node--3 {
  top: 91%;
  left: 50%;
}

.orbit-node--4 {
  top: 50%;
  left: 11%;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: 50%;
  border: 1px solid rgba(200, 168, 120, 0.1);
}

/* --------------------------------------------------------------------------
   7. Keyword strip
   -------------------------------------------------------------------------- */
.strip {
  position: relative;
  overflow: hidden;
  padding-block: 17px;
  background: var(--ivory);
  border-block: 1px solid var(--line-gold);
}

.strip::before,
.strip::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(40px, 8vw, 140px);
  z-index: 2;
  pointer-events: none;
}

.strip::before {
  left: 0;
  background: linear-gradient(to right, var(--ivory), transparent);
}

.strip::after {
  right: 0;
  background: linear-gradient(to left, var(--ivory), transparent);
}

.strip__track {
  display: flex;
  width: max-content;
  animation: marquee 46s linear infinite;
}

.strip__group {
  display: flex;
  align-items: center;
  gap: clamp(28px, 4vw, 56px);
  padding-right: clamp(28px, 4vw, 56px);
}

.strip__item {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--serif);
  font-size: 13.5px;
  letter-spacing: 0.26em;
  white-space: nowrap;
  color: var(--muted);
}

.strip__item::after {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--gold);
  transform: rotate(45deg);
  flex: none;
}

.strip__item--en {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: var(--muted-2);
}

/* --------------------------------------------------------------------------
   8. About
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.about-copy .h2 {
  max-width: 15em;
}

.about-copy .body-copy:first-of-type {
  margin-top: 28px;
}

.about-copy .link-arrow {
  margin-top: 30px;
}

.about-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.about-points li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.about-points li::before {
  content: "";
  width: 5px;
  height: 5px;
  border: 1px solid var(--gold-deep);
  transform: rotate(45deg);
  flex: none;
}

/* 西安坐标牌 */
.plaque {
  position: relative;
  padding: clamp(38px, 5vw, 62px) clamp(28px, 4vw, 54px);
  border: 1px solid var(--line-gold);
  background:
    radial-gradient(600px 340px at 100% 0%, rgba(200, 168, 120, 0.12), transparent 60%),
    linear-gradient(165deg, #0a2229 0%, #06171d 82%);
  color: var(--ivory);
  overflow: hidden;
}

.plaque::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(200, 168, 120, 0.14);
  pointer-events: none;
}

.plaque::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: 62%;
  aspect-ratio: 1;
  border: 1px solid rgba(200, 168, 120, 0.2);
  border-radius: 50%;
  pointer-events: none;
}

.plaque__eyebrow {
  position: relative;
  z-index: 1;
  font-size: 9.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
}

.plaque__coord {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 42px);
  line-height: 1.28;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 237, 0.92);
}

.plaque__title {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.plaque__text {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  max-width: 26em;
  font-size: 13px;
  line-height: 1.9;
  color: rgba(247, 244, 237, 0.56);
}

.plaque__meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid rgba(247, 244, 237, 0.14);
}

.plaque__meta span {
  padding: 5px 11px;
  border: 1px solid rgba(200, 168, 120, 0.28);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 237, 0.72);
}

.plaque__char {
  position: absolute;
  right: -2%;
  bottom: -12%;
  z-index: 0;
  font-family: var(--serif);
  font-size: clamp(180px, 22vw, 280px);
  line-height: 1;
  color: rgba(200, 168, 120, 0.07);
  pointer-events: none;
}

/* 数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(48px, 6vw, 84px);
  border: 1px solid var(--line);
  background: var(--line);
}

.stat {
  padding: clamp(24px, 3.2vw, 40px);
  background: var(--paper);
}

.stat__num {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--serif);
  font-size: clamp(38px, 4.4vw, 58px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--text);
}

.stat__num sup {
  top: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
  vertical-align: super;
}

.stat__label {
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--text);
}

.stat__en {
  margin-top: 6px;
  font-size: 9.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted-2);
}

/* --------------------------------------------------------------------------
   9. Business cards
   -------------------------------------------------------------------------- */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.biz-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: clamp(300px, 30vw, 360px);
  padding: clamp(28px, 3.6vw, 52px);
  background: var(--paper);
  color: inherit;
  overflow: hidden;
  transition: background-color 0.5s var(--ease);
}

.biz-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(200, 168, 120, 0));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s var(--ease);
}

.biz-card:hover {
  background: var(--white);
}

.biz-card:hover::after {
  transform: scaleX(1);
}

.biz-card__num {
  position: absolute;
  top: clamp(12px, 1.6vw, 22px);
  right: clamp(18px, 2.4vw, 34px);
  font-family: var(--serif);
  font-size: clamp(54px, 6vw, 82px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200, 168, 120, 0.42);
  pointer-events: none;
}

.biz-card__icon {
  color: var(--gold-deep);
  margin-bottom: 4px;
}

.biz-card__icon svg {
  width: 38px;
  height: 38px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.biz-card__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 1.9vw, 25px);
  line-height: 1.45;
  letter-spacing: 0.05em;
  color: var(--text);
}

.biz-card__en {
  margin-top: -8px;
  font-size: 9.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.biz-card__desc {
  flex: 1;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

.biz-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 6px;
}

.biz-card__more {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  flex: none;
}

.biz-card__more svg {
  width: 14px;
  height: 14px;
  transition: transform 0.4s var(--ease);
}

.biz-card:hover .biz-card__more svg {
  transform: translateX(4px);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag {
  padding: 4px 9px;
  border: 1px solid var(--line);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--muted);
  white-space: nowrap;
}

.tag--dark {
  border-color: var(--line-light);
  color: rgba(247, 244, 237, 0.65);
}

/* --------------------------------------------------------------------------
   10. Service model / wheel
   -------------------------------------------------------------------------- */
.model {
  position: relative;
  overflow: hidden;
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 600px at 88% 0%, rgba(200, 168, 120, 0.1), transparent 60%),
    radial-gradient(800px 640px at 0% 100%, rgba(18, 74, 74, 0.38), transparent 62%),
    linear-gradient(160deg, #051318 0%, #071c23 60%, #08242a 100%);
  color: rgba(247, 244, 237, 0.74);
}

.model .section-head {
  border-top-color: var(--line-light);
}

.model-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}

.wheel {
  position: relative;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1 / 1;
  margin-inline: auto;
}

.wheel__arcs {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.wheel__arc {
  fill: none;
  stroke-width: 26;
  stroke-linecap: butt;
}

.wheel__arc--1 {
  stroke: rgba(200, 168, 120, 0.88);
}

.wheel__arc--2 {
  stroke: rgba(136, 168, 156, 0.82);
}

.wheel__arc--3 {
  stroke: rgba(79, 143, 136, 0.82);
}

.wheel__guide {
  fill: none;
  stroke: rgba(247, 244, 237, 0.08);
  stroke-width: 1;
}

.wheel__ticks {
  position: absolute;
  inset: 3%;
  border-radius: 50%;
  border: 1px dashed rgba(247, 244, 237, 0.1);
}

.wheel__ticks::after {
  content: "";
  position: absolute;
  inset: 9%;
  border-radius: 50%;
  border: 1px solid rgba(200, 168, 120, 0.12);
}

.wheel__base {
  position: absolute;
  inset: 21%;
  border-radius: 50%;
  border: 1px solid rgba(247, 244, 237, 0.12);
}

.wheel__base::after {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px solid rgba(200, 168, 120, 0.2);
}

.wheel__core {
  position: absolute;
  inset: 32%;
  display: grid;
  place-content: center;
  gap: 6px;
  border-radius: 50%;
  border: 1px solid rgba(200, 168, 120, 0.32);
  background: radial-gradient(circle at 50% 38%, rgba(15, 58, 61, 0.85), rgba(6, 23, 29, 0.3));
  text-align: center;
}

.wheel__core b {
  font-family: var(--serif);
  font-size: clamp(24px, 2.9vw, 34px);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ivory);
}

.wheel__core span {
  font-size: 8.5px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.wheel__node {
  position: absolute;
  width: 160px;
  text-align: center;
  transform: translate(-50%, -50%);
}

.wheel__node::before {
  content: "";
  display: block;
  width: 5px;
  height: 5px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(200, 168, 120, 0.12);
}

.wheel__node b {
  display: block;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ivory);
}

.wheel__node span {
  display: block;
  margin-top: 5px;
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.wheel__node--1 {
  top: 5.5%;
  left: 50%;
}

.wheel__node--2 {
  top: 77%;
  left: 88%;
}

.wheel__node--3 {
  top: 77%;
  left: 12%;
}

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

.model-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-light);
}

.model-item__num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
  padding-top: 5px;
}

.model-item h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.06em;
  color: var(--ivory);
}

.model-item h3 span {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: rgba(247, 244, 237, 0.36);
  margin-left: 10px;
}

.model-item p {
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.9;
  color: rgba(247, 244, 237, 0.6);
}

/* --------------------------------------------------------------------------
   11. Process
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.step {
  position: relative;
  padding: clamp(30px, 3.4vw, 44px) clamp(18px, 2.4vw, 32px) 0 0;
  border-right: 1px solid var(--line);
}

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

.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-deep);
}

.step__num {
  display: block;
  font-family: var(--serif);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
}

.step__title {
  margin-top: 16px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(18px, 1.8vw, 22px);
  letter-spacing: 0.06em;
  color: var(--text);
}

.step__desc {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 26em;
}

/* --------------------------------------------------------------------------
   12. Positioning
   -------------------------------------------------------------------------- */
.positioning {
  position: relative;
  padding-block: var(--section-y);
  overflow: hidden;
  background-color: var(--ink-deep);
  background-image:
    radial-gradient(1000px 640px at 84% 0%, rgba(200, 168, 120, 0.1), transparent 58%),
    radial-gradient(900px 700px at 0% 100%, rgba(15, 58, 61, 0.6), transparent 62%),
    linear-gradient(180deg, #041116 0%, #061a21 100%);
  color: rgba(247, 244, 237, 0.72);
}

.positioning::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(200, 168, 120, 0.05) 1px, transparent 1px);
  background-size: 25% 100%;
  pointer-events: none;
}

.positioning-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}

.quote-mark {
  display: block;
  margin: 20px 0 2px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(54px, 5.4vw, 76px);
  line-height: 1;
  color: var(--gold);
  opacity: 0.45;
}

.quote {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.46;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.quote-sub {
  margin-top: 28px;
  max-width: 30em;
  font-size: 14.5px;
  line-height: 1.95;
  color: rgba(247, 244, 237, 0.58);
}

.quote-sign {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 36px;
  font-size: 10.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}

.quote-sign::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
}

.values {
  border-top: 1px solid var(--line-light);
}

.value-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-light);
}

.value-row__num {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
  padding-top: 4px;
}

.value-row h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.14em;
  color: var(--ivory);
}

.value-row p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.9;
  color: rgba(247, 244, 237, 0.55);
}

/* --------------------------------------------------------------------------
   13. Compliance
   -------------------------------------------------------------------------- */
.compliance {
  padding-block: clamp(64px, 8vw, 112px);
  background: var(--ivory);
  border-block: 1px solid var(--line-gold);
}

.compliance__inner {
  max-width: 980px;
  margin-inline: auto;
  text-align: center;
}

.seal {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto 30px;
  display: grid;
  place-content: center;
  border: 1px solid rgba(138, 106, 60, 0.4);
  border-radius: 50%;
  color: var(--gold-deep);
}

.seal::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(138, 106, 60, 0.22);
  border-radius: 50%;
}

.seal span {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.05;
  letter-spacing: 0.06em;
  text-align: center;
}

.compliance .h2 {
  max-width: 22em;
  margin-inline: auto;
}

.compliance__text {
  max-width: 58em;
  margin: 22px auto 0;
  font-size: 15px;
  line-height: 2;
  color: var(--muted);
}

.compliance-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px clamp(20px, 3vw, 40px);
  margin-top: 36px;
}

.compliance-list li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--text);
}

.compliance-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold-deep);
  flex: none;
}

/* --------------------------------------------------------------------------
   14. Contact
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(40px, 6vw, 90px);
  align-items: start;
}

.contact-intro .h2 {
  max-width: 12em;
}

.info-list {
  margin-top: 42px;
  border-top: 1px solid var(--line);
}

.info-row {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.info-row dt {
  font-size: 10.5px;
  letter-spacing: 0.22em;
  line-height: 1.9;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.info-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--text);
}

.info-row dd a {
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.info-row dd a:hover {
  color: var(--gold-deep);
  border-bottom-color: var(--gold-deep);
}

.form-card {
  position: relative;
  padding: clamp(26px, 4vw, 52px);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 40px 90px -60px rgba(6, 23, 29, 0.4);
}

.form-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 78px;
  height: 2px;
  background: var(--gold);
}

.form-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.form-card__head h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 21px;
  letter-spacing: 0.08em;
  color: var(--text);
}

.form-card__head span {
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.contact-form {
  margin-top: 28px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 28px;
}

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

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.field label em {
  font-style: normal;
  color: var(--gold-deep);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 9px 0 11px;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  font-size: 14.5px;
  color: var(--text);
  transition: border-color 0.35s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}

.field textarea {
  min-height: 104px;
  resize: vertical;
  line-height: 1.8;
}

.field select {
  padding-right: 26px;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%238a6a3c' stroke-width='1.2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(93, 109, 112, 0.5);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-bottom-color: var(--gold-deep);
  outline: none;
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-bottom-color: #a3453a;
}

.field__error {
  display: none;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #a3453a;
}

.field.is-invalid .field__error {
  display: block;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.form-note {
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted-2);
  max-width: 26em;
}

.form-status {
  margin-top: 18px;
  padding: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold-deep);
}

.form-status.is-error {
  color: #a3453a;
}

.form-status:empty {
  display: none;
}

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.contact-aside__note {
  font-size: 12px;
  line-height: 1.9;
  color: var(--muted-2);
  max-width: 30em;
}

/* --------------------------------------------------------------------------
   15. CTA band
   -------------------------------------------------------------------------- */
.cta-band {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 6vw, 76px);
  background-color: var(--teal-deep);
  background-image:
    radial-gradient(800px 420px at 88% 10%, rgba(200, 168, 120, 0.16), transparent 60%),
    linear-gradient(120deg, #08232a 0%, #0b2f33 100%);
  color: var(--ivory);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(200, 168, 120, 0.06) 1px, transparent 1px);
  background-size: 180px 100%;
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band .h2 {
  font-size: clamp(24px, 2.9vw, 36px);
}

.cta-band p {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.9;
  color: rgba(247, 244, 237, 0.58);
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* --------------------------------------------------------------------------
   16. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding-top: clamp(56px, 7vw, 92px);
  background: var(--ink);
  color: rgba(247, 244, 237, 0.56);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 0.8fr));
  gap: clamp(32px, 4vw, 60px);
  padding-bottom: clamp(44px, 6vw, 76px);
}

.footer-brand .brand {
  color: var(--gold);
}

.footer-brand__text {
  margin-top: 24px;
  max-width: 30em;
  font-size: 12.5px;
  line-height: 1.95;
  color: rgba(247, 244, 237, 0.46);
}

.footer-brand__fullname {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line-light);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(247, 244, 237, 0.7);
}

.footer-brand__en {
  margin-top: 5px;
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(247, 244, 237, 0.34);
}

.footer-col h4 {
  margin: 0 0 22px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-col li + li {
  margin-top: 11px;
}

.footer-col a {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(247, 244, 237, 0.58);
  transition: color 0.3s var(--ease);
}

.footer-col a:hover {
  color: var(--gold-light);
}

.footer-col__plain {
  font-size: 12.5px;
  line-height: 1.9;
  color: rgba(247, 244, 237, 0.46);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px 32px;
  flex-wrap: wrap;
  padding-block: 24px 30px;
  border-top: 1px solid var(--line-light);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: rgba(247, 244, 237, 0.36);
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom__note {
  max-width: 60em;
}

/* --------------------------------------------------------------------------
   17. Inner page hero
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: calc(var(--header-h) + clamp(64px, 9vw, 118px)) clamp(56px, 7vw, 96px);
  background-color: var(--ink-deep);
  background-image:
    radial-gradient(900px 520px at 86% 8%, rgba(200, 168, 120, 0.14), transparent 60%),
    radial-gradient(760px 560px at 0% 100%, rgba(16, 66, 68, 0.45), transparent 62%),
    linear-gradient(155deg, #041218 0%, #071d24 58%, #0a2b30 100%);
  color: var(--ivory);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(200, 168, 120, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 168, 120, 0.05) 1px, transparent 1px);
  background-size: 130px 130px;
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 20% 20%, #000 20%, transparent 76%);
  mask-image: radial-gradient(ellipse 80% 90% at 20% 20%, #000 20%, transparent 76%);
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(26px, 3.6vw, 42px);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(247, 244, 237, 0.44);
}

.breadcrumb a {
  color: inherit;
  transition: color 0.3s var(--ease);
}

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

.breadcrumb span {
  color: rgba(200, 168, 120, 0.6);
}

.page-hero__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(38px, 5vw, 70px);
  line-height: 1.26;
  letter-spacing: 0.035em;
  color: var(--ivory);
}

.page-hero__lede {
  margin-top: 26px;
  max-width: 54ch;
  font-size: clamp(14.5px, 1.25vw, 16px);
  line-height: 2;
  color: rgba(247, 244, 237, 0.62);
}

.page-hero__ghost {
  position: absolute;
  right: -1%;
  bottom: -10%;
  z-index: 1;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(120px, 17vw, 250px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200, 168, 120, 0.12);
  pointer-events: none;
  user-select: none;
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--line-light);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 237, 0.48);
}

.page-hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-hero__meta span::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* 锚点索引条 */
.index-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.index-chips a {
  padding: 8px 16px;
  border: 1px solid var(--line-light);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: rgba(247, 244, 237, 0.7);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.index-chips a:hover {
  border-color: var(--gold);
  background: rgba(200, 168, 120, 0.08);
  color: var(--gold-light);
}

/* --------------------------------------------------------------------------
   18. Inner page content blocks
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(36px, 6vw, 90px);
  align-items: start;
}

.split--wide {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}

.mt-section {
  margin-top: clamp(48px, 6vw, 84px);
}

/* 业务详情 */
.service {
  padding-block: clamp(52px, 6.5vw, 92px);
  border-bottom: 1px solid var(--line);
}

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

.service-inner {
  display: grid;
  grid-template-columns: clamp(64px, 8vw, 120px) minmax(0, 1fr);
  gap: clamp(18px, 3.4vw, 48px);
  align-items: start;
}

.service-no {
  font-family: var(--serif);
  font-size: clamp(38px, 4.8vw, 62px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(138, 106, 60, 0.45);
}

.service-main .eyebrow {
  margin-bottom: 18px;
}

.service-main .h2 {
  max-width: 16em;
}

.service-main .lede {
  max-width: 56ch;
}

.service-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(30px, 4vw, 48px);
  padding-top: clamp(26px, 3vw, 38px);
  border-top: 1px solid var(--line);
}

.subhead {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 20px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--text);
}

.subhead span {
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--muted-2);
}

.dash-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 2.05;
  color: var(--muted);
}

.dash-list li::before {
  content: "";
  position: absolute;
  top: 0.95em;
  left: 0;
  width: 12px;
  height: 1px;
  background: var(--gold-deep);
  opacity: 0.6;
}

.dash-list + .dash-list {
  margin-top: 14px;
}

.service-value {
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
}

.service-value .tags {
  margin-top: 20px;
}

.service-note {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--muted-2);
}

/* 关于页：使命 / 愿景 / 价值观 */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.pillar {
  display: flex;
  flex-direction: column;
  padding: clamp(26px, 3.2vw, 42px);
  background: var(--paper);
}

.pillar__idx {
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
}

.pillar h3 {
  margin-top: 18px;
  min-height: 3em;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 21px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  color: var(--text);
}

.pillar p {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--muted);
}

.pillar__en {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted-2);
}

/* 优势列表 */
.adv-list {
  border-top: 1px solid var(--line);
}

.adv-row {
  display: grid;
  grid-template-columns: clamp(48px, 6vw, 78px) minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(24px, 3vw, 36px) 0;
  border-bottom: 1px solid var(--line);
}

.adv-row__num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  padding-top: 5px;
}

.adv-row h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(18px, 1.9vw, 23px);
  letter-spacing: 0.06em;
  color: var(--text);
}

.adv-row p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
}

/* 关于页品牌字块 */
.brand-panel {
  position: relative;
  padding: clamp(36px, 5vw, 64px);
  overflow: hidden;
  border: 1px solid var(--line-gold);
  background:
    radial-gradient(620px 380px at 90% 0%, rgba(200, 168, 120, 0.13), transparent 62%),
    linear-gradient(160deg, #0a2229, #06171d 84%);
  color: var(--ivory);
}

.brand-panel .eyebrow {
  color: var(--gold);
}

.brand-panel__quote {
  margin-top: 26px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: var(--ivory);
}

.brand-panel__quote em {
  font-style: normal;
  color: var(--gold);
}

.brand-panel__text {
  margin-top: 20px;
  font-size: 13.5px;
  line-height: 2;
  color: rgba(247, 244, 237, 0.6);
}

.brand-panel__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line-light);
}

.brand-panel__meta dt {
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(247, 244, 237, 0.38);
}

.brand-panel__meta dd {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--gold-light);
}

.brand-panel__char {
  position: absolute;
  right: -4%;
  bottom: -16%;
  font-family: var(--serif);
  font-size: clamp(180px, 24vw, 300px);
  line-height: 1;
  color: rgba(200, 168, 120, 0.06);
  pointer-events: none;
}

/* 合规清单（关于页） */
.rule-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(36px, 4vw, 52px);
  border: 1px solid var(--line);
  background: var(--line);
}

.rule {
  display: flex;
  gap: 16px;
  padding: clamp(22px, 2.8vw, 34px);
  background: var(--paper);
}

.rule__mark {
  flex: none;
  display: grid;
  place-content: center;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 11px;
  color: var(--gold-deep);
}

.rule h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--text);
}

.rule p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
}

/* 联系页信息卡 */
.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.info-card {
  padding: clamp(24px, 3vw, 36px);
  background: var(--paper);
}

.info-card__label {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.info-card__value {
  margin-top: 16px;
  font-family: var(--serif);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--text);
}

.info-card__value a {
  font-family: var(--sans);
  font-size: 0.72em;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color 0.3s var(--ease);
}

.info-card__value a:hover {
  color: var(--gold-deep);
}

.info-card__note {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted-2);
}

/* FAQ */
.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  font-size: 15.5px;
  letter-spacing: 0.04em;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.faq summary::after {
  content: "+";
  flex: none;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  color: var(--gold-deep);
  transition: transform 0.35s var(--ease);
}

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

.faq summary:hover {
  color: var(--gold-deep);
}

.faq__answer {
  padding: 0 0 24px;
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
}

.section-foot {
  display: flex;
  justify-content: flex-end;
  margin-top: clamp(28px, 3.4vw, 44px);
}

.service--ivory {
  background: var(--ivory);
}

.page-hero .eyebrow {
  margin-bottom: 20px;
  color: var(--gold);
}

.cta-band .eyebrow {
  margin-bottom: 16px;
}

.about-note {
  max-width: 60em;
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: 22px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--muted-2);
}

.about-note strong {
  font-weight: 500;
  color: var(--text);
}

/* --------------------------------------------------------------------------
   19. Reveal & motion
   -------------------------------------------------------------------------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.95s var(--ease), transform 0.95s var(--ease);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}

html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

.anim {
  animation: rise 1.1s var(--ease) both;
}

.anim--2 {
  animation-delay: 0.12s;
}

.anim--3 {
  animation-delay: 0.24s;
}

.anim--4 {
  animation-delay: 0.36s;
}

.anim--5 {
  animation-delay: 0.5s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

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

@keyframes pulse {
  0% {
    transform: scale(0.8);
    opacity: 0.9;
  }
  70% {
    transform: scale(1.5);
    opacity: 0;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-18px, 22px, 0);
  }
}

@keyframes scrollLine {
  0% {
    transform: scaleY(0);
    opacity: 0;
  }
  30% {
    transform: scaleY(1);
    opacity: 1;
  }
  100% {
    transform: scaleY(1);
    opacity: 0;
  }
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(14px, 2vw, 28px);
  bottom: clamp(14px, 2vw, 28px);
  z-index: 80;
  display: grid;
  place-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-gold);
  background: rgba(6, 23, 29, 0.72);
  color: var(--gold);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: opacity 0.4s var(--ease), visibility 0.4s var(--ease), transform 0.4s var(--ease), background-color 0.4s var(--ease);
}

.to-top svg {
  width: 16px;
  height: 16px;
}

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

.to-top:hover {
  background: var(--gold);
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   20. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  :root {
    --header-h: 80px;
  }

  .site-nav {
    gap: 16px;
  }

  .site-nav__link {
    font-size: 12px;
    letter-spacing: 0.1em;
  }

  .hero__visual {
    max-width: 460px;
  }

  .hero__title-rule span {
    font-size: 9.5px;
    letter-spacing: 0.22em;
  }

  .hero__title-rule::before {
    width: 38px;
  }

  .orbit-node {
    padding: 11px 13px;
  }
}

@media (max-width: 1024px) {
  .hero__scroll {
    display: none;
  }

  .hero__meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .hero__meta-item {
    justify-content: space-between;
  }

  .about-grid,
  .split,
  .split--wide,
  .contact-grid,
  .model-grid,
  .positioning-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .plaque {
    max-width: 560px;
  }

  .about-visual {
    order: 2;
  }

  .wheel {
    max-width: 440px;
  }

  .wheel__node {
    width: 140px;
  }

  .wheel__node b {
    font-size: 15px;
  }

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

  .step {
    border-bottom: 1px solid var(--line);
    padding-bottom: 30px;
  }

  .step:nth-child(2n) {
    border-right: 0;
  }

  .step:nth-last-child(-n + 2) {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .steps--flat {
    border-top: 0;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line-light);
  }

  .service-inner {
    grid-template-columns: 56px minmax(0, 1fr);
  }
}

@media (max-width: 880px) {
  .site-nav,
  .header-actions .header-cta {
    display: none;
  }

  .nav-toggle {
    display: block;
  }
}

@media (max-width: 860px) {
  .section-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

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

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

  .adv-row {
    grid-template-columns: 44px minmax(0, 1fr);
    row-gap: 10px;
  }

  .adv-row p {
    grid-column: 2;
  }

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

  .biz-card {
    min-height: 0;
  }

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

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

  .service-no {
    font-size: 34px;
  }

  .hero__meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .hero__meta-item {
    justify-content: space-between;
  }

  .hero__title {
    font-size: clamp(38px, 8.4vw, 60px);
  }

  .hero {
    min-height: auto;
    padding-block: calc(var(--header-h) + 56px) 52px;
  }

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

  .hero__copy {
    max-width: 640px;
  }

  .hero__visual {
    display: none;
  }

  .hero__meta {
    margin-top: 48px;
  }

  .footer-grid {
    gap: 32px 24px;
  }

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

@media (max-width: 720px) {
  :root {
    --header-h: 72px;
    --section-y: 68px;
  }

  .brand__mark {
    width: 36px;
    height: 36px;
  }

  .brand__name {
    font-size: 17px;
  }

  .hero__visual {
    display: none;
  }

  .hero__title-rule span {
    font-size: 8.5px;
    letter-spacing: 0.16em;
  }

  .hero__title-rule::before {
    width: 34px;
  }

  .orbit-node {
    padding: 9px 12px;
  }

  .orbit-node__label {
    font-size: 10.5px;
    letter-spacing: 0.08em;
  }

  .orbit-node__idx {
    font-size: 9px;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
  }

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

  .stat {
    display: flex;
    align-items: baseline;
    gap: 18px;
    padding: 20px 22px;
  }

  .stat__num {
    font-size: 34px;
    flex: none;
    min-width: 2.2em;
  }

  .stat__label {
    margin-top: 0;
  }

  .stat__en {
    display: none;
  }

  .steps {
    grid-template-columns: minmax(0, 1fr);
    border-top: 0;
  }

  .step {
    padding: 26px 0 26px 24px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

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

  .step::before {
    top: 32px;
    left: -4px;
  }

  .step:nth-last-child(-n + 2) {
    padding-bottom: 26px;
    border-bottom: 1px solid var(--line);
  }

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

  .wheel {
    max-width: 330px;
  }

  .wheel__node {
    width: 116px;
  }

  .wheel__node b {
    font-size: 13.5px;
  }

  .wheel__node span {
    font-size: 8px;
    letter-spacing: 0.16em;
  }

  .wheel__core b {
    font-size: 22px;
  }

  .wheel__core span {
    font-size: 7px;
  }

  .model-item {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .model-item h3 span {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }

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

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

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

  .page-hero__ghost {
    opacity: 0.55;
    bottom: -4%;
  }

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

  .info-row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
  }

  .quote {
    font-size: clamp(25px, 6.4vw, 34px);
  }

  .compliance-list {
    gap: 12px 20px;
  }

  .cta-band__inner {
    display: block;
  }

  .cta-band__actions {
    margin-top: 24px;
  }

  .biz-card__foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .form-card {
    padding: 24px 20px;
  }

  .to-top {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 460px) {
  .brand__en {
    display: none;
  }

  .hero__title {
    font-size: 34px;
  }

  .hero__title-rule span {
    font-size: 9px;
    letter-spacing: 0.24em;
  }

  .hero__visual {
    max-width: 280px;
  }

  .orbit-node {
    border: 0;
    background: transparent;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    padding: 0;
    gap: 2px;
  }

  .orbit-node--2 {
    left: 86%;
  }

  .orbit-node--4 {
    left: 14%;
  }

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

  .stat {
    flex-wrap: wrap;
    gap: 4px 16px;
  }

  .form-foot .btn {
    width: 100%;
  }

  .compliance__text {
    font-size: 14px;
  }
}

/* --------------------------------------------------------------------------
   21. Motion / print preferences
   -------------------------------------------------------------------------- */
@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;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .strip__track {
    animation: none;
    flex-wrap: wrap;
    width: 100%;
  }

  .strip__group[aria-hidden="true"] {
    display: none;
  }
}

@media print {
  .site-header,
  .hero__visual,
  .hero__scroll,
  .strip,
  .to-top,
  .mobile-nav,
  .form-card {
    display: none !important;
  }

  body::after {
    display: none;
  }

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

  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* --------------------------------------------------------------------------
   12. 语言切换组件（.lang-switch）— 与页头深色玻璃风格统一
   -------------------------------------------------------------------------- */
.lang-switch {
  position: relative;
  flex: none;
}

.lang-switch__btn {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line-light);
  background: rgba(247, 244, 237, 0.04);
  color: var(--ivory);
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.lang-switch__btn:hover {
  border-color: var(--line-light-strong);
  background: rgba(247, 244, 237, 0.08);
}

.lang-switch__icon {
  width: 16px;
  height: 16px;
  color: var(--gold);
  flex: none;
}

.lang-switch__current {
  line-height: 1;
  white-space: nowrap;
}

.lang-switch__chevron {
  width: 12px;
  height: 12px;
  opacity: 0.7;
  transition: transform 0.3s var(--ease);
}

.lang-switch.is-open .lang-switch__chevron {
  transform: rotate(180deg);
}

.lang-switch__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 130;
  min-width: 156px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: rgba(4, 17, 22, 0.92);
  border: 1px solid var(--line-light);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.42);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.28s var(--ease), visibility 0.28s var(--ease), transform 0.28s var(--ease);
}

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

.lang-switch__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 9px 12px;
  border: 0;
  background: transparent;
  color: rgba(247, 244, 237, 0.78);
  font-family: var(--sans);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.lang-switch__option:hover {
  background: rgba(200, 168, 120, 0.12);
  color: var(--ivory);
}

.lang-switch__option[aria-selected="true"] {
  color: var(--gold-light);
}

.lang-switch__option[aria-selected="true"]::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
}

/* 悬停提示：显示当前语言名称（JS 引擎写入 data-tip，随语言联动） */
.lang-switch__btn {
  position: relative;
}

.lang-switch__btn::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 140;
  padding: 6px 11px;
  border: 1px solid var(--line-light);
  background: rgba(4, 17, 22, 0.94);
  color: var(--gold-light, var(--gold));
  font-size: 12px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s var(--ease), visibility 0.22s var(--ease);
}

.lang-switch__btn:hover::after,
.lang-switch__btn:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transition-delay: 0.35s;
}

/* 菜单展开时不显示提示；引擎未初始化（无 data-tip）时不渲染空气泡 */
.lang-switch.is-open .lang-switch__btn::after,
.lang-switch__btn:not([data-tip])::after {
  display: none;
}

/* 移动端：保持切换按钮可见，紧凑排布 */
@media (max-width: 880px) {
  .header-actions {
    gap: 10px;
  }

  .lang-switch__btn {
    height: 40px;
    padding: 0 10px;
    gap: 6px;
    font-size: 12.5px;
  }

  .lang-switch__menu {
    position: fixed;
    top: calc(var(--header-h) + 4px);
    right: var(--gutter);
    left: auto;
  }
}

/* --------------------------------------------------------------------------
   13. 多语言排版适配：英文 / 俄语（西里尔）字体栈
   优先使用覆盖拉丁与西里尔字符集的字体，避免字符缺失或回退错乱；
   保留 CJK 字体作为回退，兼容页面中保留的中文品牌字符。
   -------------------------------------------------------------------------- */
html[lang="en"],
html[lang="ru"] {
  --serif: Georgia, "Times New Roman", "Noto Serif", "PT Serif", "Noto Serif SC", "Songti SC", serif;
  --sans: "Segoe UI", "Helvetica Neue", Arial, "PT Sans", "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* 俄语长单词与西里尔字距微调 */
html[lang="ru"] body {
  letter-spacing: 0.005em;
}

html[lang="ru"] .site-nav__link,
html[lang="ru"] .hero__title,
html[lang="ru"] .h2,
html[lang="ru"] .page-hero__title {
  letter-spacing: 0;
}

/* 英文 / 俄语 hero 长标题：缩小字号并允许换行，避免溢出与轨道节点重叠 */
html[lang="en"] .hero__title,
html[lang="ru"] .hero__title {
  font-size: clamp(30px, 4.1vw, 56px);
  line-height: 1.22;
}

html[lang="en"] .hero__title span,
html[lang="ru"] .hero__title span {
  white-space: normal;
}

/* 英文 / 俄语下隐藏页面装饰性汉字（印章等），保留排版均衡 */
html[lang="en"] .plaque__char,
html[lang="ru"] .plaque__char,
html[lang="en"] .brand-panel__char,
html[lang="ru"] .brand-panel__char {
  opacity: 0.28;
}