/* ==========================================================================
   亿源小揽 官网 · 设计系统
   ========================================================================== */

:root {
  /* 色彩：品牌紫取自 Logo，整体以深墨紫 + 暖白为主，金色仅作点缀 */
  --brand: #623f90;
  --brand-600: #523378;
  --brand-100: #efe9f6;
  --deep: #1d1430;
  --deep-2: #261a3d;
  --ink: #17121f;
  --ink-2: #3a3345;
  --muted: #6e6779;
  --line: rgba(23, 18, 31, 0.12);
  --line-strong: rgba(23, 18, 31, 0.22);
  --paper: #f6f4f0;
  --paper-2: #efebe4;
  --white: #ffffff;
  --gold: #d9a521;
  --on-dark: #f4f1f8;
  --on-dark-muted: rgba(244, 241, 248, 0.66);
  --on-dark-line: rgba(244, 241, 248, 0.16);

  /* 字体：标题宋体衬线，正文黑体 */
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --latin: "Helvetica Neue", "Avenir Next", "Segoe UI", Arial, sans-serif;

  /* 字号阶梯 */
  --fs-display: clamp(2.6rem, 1.2rem + 4.6vw, 5.4rem);
  --fs-h2: clamp(1.9rem, 1.2rem + 2.2vw, 3.2rem);
  --fs-h3: clamp(1.25rem, 1.05rem + 0.6vw, 1.6rem);
  --fs-lead: clamp(1.05rem, 0.98rem + 0.35vw, 1.3rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-micro: 0.75rem;

  /* 间距与布局 */
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1320px;
  --section: clamp(88px, 11vw, 168px);
  --radius: 2px;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --header-h: 76px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

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

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

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--ink); color: #fff; padding: 10px 16px;
  transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ---------- 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: currentColor;
}
.on-dark .eyebrow { color: var(--on-dark-muted); }

.h2, .h3, .hero-title, .intro-statement, .quote-main blockquote, .event h3 { text-wrap: balance; }
.lead, .case p, .service p { text-wrap: pretty; }

.h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: var(--fs-h2);
  line-height: 1.22;
  letter-spacing: 0.01em;
}
.h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.4;
}
.lead {
  font-size: var(--fs-lead);
  line-height: 1.8;
  color: var(--ink-2);
}
.on-dark .lead { color: var(--on-dark-muted); }
.muted { color: var(--muted); }

.section { padding: var(--section) 0; position: relative; }
.section--white { background: var(--white); }
.section--dark { background: var(--deep); color: var(--on-dark); }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 32px 64px;
  align-items: end;
  margin-bottom: clamp(48px, 6vw, 88px);
}
.section-head .eyebrow { margin-bottom: 22px; }

/* ---------- 按钮与链接 ---------- */
.btn {
  --bg: var(--brand);
  --fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  height: 54px;
  padding: 0 28px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  overflow: hidden;
  isolation: isolate;
  transition: color .45s var(--ease);
}
.btn::after {
  content: "";
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background: var(--deep);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .55s var(--ease);
  z-index: -1;
}
.btn:hover::after { transform: scaleX(1); transform-origin: left; }
.btn .arrow { transition: transform .45s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn--light { --bg: #fff; --fg: var(--ink); }
.btn--light::after { background: var(--brand); }
.btn--light:hover { color: #fff; }
.btn--ghost {
  --bg: transparent; --fg: currentColor;
  box-shadow: inset 0 0 0 1px currentColor;
}
.btn--ghost::after { background: rgba(255,255,255,.12); }

.arrow {
  width: 18px; height: 10px;
  flex: none;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  padding-bottom: 6px;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  transition: background-size .5s var(--ease);
}
.link-arrow:hover { background-size: 0% 1px; background-position: 100% 100%; }
.link-arrow .arrow { transition: transform .45s var(--ease); }
.link-arrow:hover .arrow { transform: translateX(5px); }

/* ---------- 待确认标记 ---------- */
.tbc {
  position: relative;
  background: none;
  color: inherit;
  text-decoration: underline dashed rgba(217, 165, 33, 0.95);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
  cursor: help;
}
.tbc::after {
  content: "待确认";
  position: relative;
  top: -0.9em;
  margin-left: 4px;
  padding: 1px 5px;
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: #3b2a00;
  background: #f3c94a;
  border-radius: 2px;
  vertical-align: baseline;
  white-space: nowrap;
}
.tbc-tip {
  position: fixed;
  z-index: 300;
  max-width: 280px;
  padding: 10px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: #fff;
  background: #2a2233;
  border-left: 3px solid #f3c94a;
  box-shadow: 0 12px 32px rgba(0,0,0,.25);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .2s, transform .2s;
}
.tbc-tip.is-on { opacity: 1; transform: none; }
body.hide-tbc .tbc { text-decoration: none; cursor: inherit; }
body.hide-tbc .tbc::after { display: none; }

.tbc-toggle {
  position: fixed;
  right: 16px; bottom: 16px;
  z-index: 120;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  color: #3b2a00;
  background: #f3c94a;
  border-radius: 2px;
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
}
.tbc-toggle .dot { width: 6px; height: 6px; border-radius: 50%; background: #3b2a00; }
body.hide-tbc .tbc-toggle { background: #fff; color: var(--ink); }
body.hide-tbc .tbc-toggle .dot { background: var(--muted); }

/* ==========================================================================
   页头
   ========================================================================== */
.header {
  position: fixed;
  top: 0; right: 0; bottom: auto; left: 0;
  z-index: 100;
  height: var(--header-h);
  color: #fff;
  transition: background-color .5s var(--ease), color .5s var(--ease), box-shadow .5s var(--ease), transform .5s var(--ease);
}
.header .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
  max-width: 1480px;
}
.brand { position: relative; display: block; width: 156px; height: 39px; flex: none; }
.brand img {
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: contain; object-position: left center;
  transition: opacity .5s var(--ease);
}
.brand .logo-color { opacity: 0; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 8px 14px;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  opacity: .9;
  transition: opacity .3s;
}
.nav a::after {
  content: "";
  position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.nav a:hover { opacity: 1; }
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-cta { display: flex; align-items: center; gap: 22px; }
.header-phone {
  font-family: var(--latin);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.header-phone small {
  display: block;
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.12em;
  opacity: .7;
  line-height: 1.2;
}
.header .btn { height: 44px; padding: 0 20px; font-size: 0.88rem; }
.header .btn--light::after { background: var(--brand); }

.menu-btn {
  display: none;
  width: 44px; height: 44px;
  margin-left: auto;
  position: relative;
}
.menu-btn span {
  position: absolute; left: 11px; right: 11px; height: 1.5px;
  background: currentColor;
  transition: transform .4s var(--ease), opacity .3s;
}
.menu-btn span:nth-child(1) { top: 17px; }
.menu-btn span:nth-child(2) { top: 26px; }

/* 滚动后的页头 */
.header.is-solid {
  background: rgba(246, 244, 240, 0.98);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}
.header.is-solid .logo-white { opacity: 0; }
.header.is-solid .logo-color { opacity: 1; }
.header.is-solid .btn--light { --bg: var(--brand); --fg: #fff; }
.header.is-solid .btn--light::after { background: var(--deep); }
.header.is-hidden { transform: translateY(-100%); }

/* 移动端菜单 */
.mobile-nav {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0;
  z-index: 99;
  background: var(--deep);
  color: var(--on-dark);
  padding: calc(var(--header-h) + 24px) var(--gutter) 40px;
  display: flex; flex-direction: column;
  opacity: 0; visibility: hidden;
  transition: opacity .45s var(--ease), visibility .45s;
}
.mobile-nav a.m-link {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  border-bottom: 1px solid var(--on-dark-line);
  transform: translateY(16px);
  opacity: 0;
  transition: transform .6s var(--ease), opacity .6s var(--ease);
}
.mobile-nav .m-foot { margin-top: auto; display: grid; gap: 14px; }
.mobile-nav .m-foot .btn { justify-content: center; }
body.menu-open { overflow: hidden; }
body.menu-open .mobile-nav { opacity: 1; visibility: visible; }
body.menu-open .mobile-nav a.m-link { transform: none; opacity: 1; }
body.menu-open .mobile-nav a.m-link:nth-child(2) { transition-delay: .05s; }
body.menu-open .mobile-nav a.m-link:nth-child(3) { transition-delay: .1s; }
body.menu-open .mobile-nav a.m-link:nth-child(4) { transition-delay: .15s; }
body.menu-open .mobile-nav a.m-link:nth-child(5) { transition-delay: .2s; }
body.menu-open .mobile-nav a.m-link:nth-child(6) { transition-delay: .25s; }
body.menu-open .mobile-nav a.m-link:nth-child(7) { transition-delay: .3s; }
body.menu-open .header { color: #fff; background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
body.menu-open .header .logo-white { opacity: 1; }
body.menu-open .header .logo-color { opacity: 0; }
body.menu-open .menu-btn span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
body.menu-open .menu-btn span:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }

/* ==========================================================================
   首屏
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  /* 视频是 2.6:1 的宽幅画面：大屏上不让首屏无限变高，否则画面会被放大变糊 */
  min-height: min(100svh, max(640px, 52vw));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
  background: var(--deep);
  overflow: hidden;
  isolation: isolate;
}
.hero-media {
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  z-index: -2;
}
.hero-media video,
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
}
.hero::before {
  content: "";
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(20, 13, 34, 0.66) 0%, rgba(20, 13, 34, 0.38) 40%, rgba(20, 13, 34, 0.04) 100%),
    linear-gradient(0deg, rgba(20, 13, 34, 0.78) 0%, rgba(20, 13, 34, 0) 38%),
    linear-gradient(180deg, rgba(20, 13, 34, 0.42) 0%, rgba(20, 13, 34, 0) 20%);
}
.hero-content {
  padding-top: calc(var(--header-h) + 64px);
  padding-bottom: clamp(48px, 7vh, 88px);
}
.hero .eyebrow { color: rgba(255,255,255,.78); margin-bottom: 28px; }
.hero-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: var(--fs-display);
  line-height: 1.14;
  letter-spacing: 0.02em;
  max-width: 13em;
}
.hero-title .line { display: block; overflow: hidden; padding-bottom: 0.06em; }
.hero-title .line > span { display: inline-block; }
.hero-sub {
  max-width: 34em;
  margin-top: 30px;
  font-size: var(--fs-lead);
  line-height: 1.85;
  color: rgba(255,255,255,.8);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 44px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(56px, 9vh, 104px);
  border-top: 1px solid rgba(255,255,255,.2);
}
.stat { padding: 26px 24px 0 0; }
.stat + .stat { padding-left: 24px; border-left: 1px solid rgba(255,255,255,.14); }
.stat-num {
  font-family: var(--latin);
  font-size: clamp(2rem, 1.4rem + 1.8vw, 3.1rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat-num sup { font-size: 0.45em; font-weight: 400; margin-left: 2px; vertical-align: 0.9em; }
.stat-num .unit { font-family: var(--sans); font-size: 0.4em; font-weight: 400; margin-left: 6px; letter-spacing: 0.04em; }
.stat-label { margin-top: 12px; font-size: var(--fs-small); color: rgba(255,255,255,.66); letter-spacing: 0.06em; }

.hero-controls {
  position: absolute;
  right: var(--gutter);
  top: calc(var(--header-h) + 32px);
  display: flex; align-items: center; gap: 16px;
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  color: rgba(255,255,255,.7);
}
.video-toggle {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 50%;
  transition: background-color .3s, border-color .3s;
}
.video-toggle:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.video-toggle svg { width: 12px; height: 12px; }
.video-toggle .i-play { display: none; }
.video-toggle.is-paused .i-play { display: block; }
.video-toggle.is-paused .i-pause { display: none; }

.scroll-cue {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(48px, 7vh, 88px);
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  font-size: 10px; letter-spacing: 0.3em;
  color: rgba(255,255,255,.6);
  writing-mode: vertical-rl;
}
.scroll-cue i {
  display: block; width: 1px; height: 64px;
  background: rgba(255,255,255,.25);
  position: relative; overflow: hidden;
}
.scroll-cue i::after {
  content: ""; position: absolute; left: 0; top: -40%;
  width: 1px; height: 40%;
  background: #fff;
  animation: cue 2.2s var(--ease-in-out) infinite;
}
@keyframes cue { to { top: 100%; } }

/* ==========================================================================
   定位陈述
   ========================================================================== */
.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 48px;
  align-items: start;
}
.intro-grid > .eyebrow { margin-top: 0.9em; }
.intro-statement {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.6rem, 1rem + 2vw, 2.75rem);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.intro-statement em { font-style: normal; color: var(--brand); }
.intro-foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  margin-top: clamp(48px, 6vw, 80px);
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.intro-foot h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; letter-spacing: .04em; }
.intro-foot p { color: var(--muted); font-size: 0.95rem; }

.intro-figure {
  position: relative;
  margin-top: clamp(64px, 8vw, 120px);
  height: clamp(280px, 42vw, 620px);
  overflow: hidden;
}
.intro-figure img {
  position: absolute; top: -12%; right: 0; bottom: -12%; left: 0;
  width: 100%; height: 124%;
  object-fit: cover;
  object-position: 50% 30%;
}
.intro-figure figcaption {
  position: absolute; left: 0; bottom: 0;
  padding: 18px 24px;
  background: var(--paper);
  font-size: var(--fs-small);
  color: var(--muted);
  max-width: 80%;
}

/* ==========================================================================
   业务
   ========================================================================== */
.services {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.service {
  position: relative;
  display: flex; flex-direction: column;
  min-height: 300px;
  padding: 32px 30px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  overflow: hidden;
  isolation: isolate;
  transition: color .5s var(--ease);
}
.service::before {
  content: "";
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  z-index: -1;
  background: var(--deep);
  transform: translateY(101%);
  transition: transform .65s var(--ease);
}
.service:hover { color: var(--on-dark); }
.service:hover::before { transform: none; }
.service-no {
  font-family: var(--latin);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color .5s;
}
.service:hover .service-no { color: var(--on-dark-muted); }
.service h3 { margin-top: 40px; }
.service p {
  margin-top: 14px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
  transition: color .5s;
}
.service:hover p { color: var(--on-dark-muted); }
.service .more {
  margin-top: auto;
  padding-top: 28px;
  display: flex; align-items: center; gap: 10px;
  font-size: 0.85rem; font-weight: 600; letter-spacing: 0.06em;
  opacity: 0; transform: translateY(8px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.service:hover .more { opacity: 1; transform: none; }
.service--feature { background: var(--brand); color: #fff; }
.service--feature .service-no,
.service--feature p { color: rgba(255,255,255,.72); }
.service--feature .more { opacity: 1; transform: none; }
.service--feature .tag {
  position: absolute; top: 30px; right: 28px;
  font-size: 10.5px; letter-spacing: .14em;
  padding: 3px 8px;
  border: 1px solid rgba(255,255,255,.5);
}

/* ==========================================================================
   星级合规代账
   ========================================================================== */
.flagship { overflow: hidden; }
.flagship .h2 { color: #fff; }
.compare {
  border-top: 1px solid var(--on-dark-line);
}
.compare-row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 4fr) minmax(0, 5fr);
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--on-dark-line);
  align-items: start;
}
.compare-head {
  padding: 0 0 16px;
  font-size: var(--fs-micro);
  letter-spacing: .2em;
  color: var(--on-dark-muted);
}
.compare-head span:last-child { color: var(--gold); }
.compare-row h3 { font-family: var(--serif); font-size: 1.15rem; font-weight: 700; color: #fff; }
.compare-row .old { color: var(--on-dark-muted); font-size: 0.93rem; position: relative; padding-left: 22px; }
.compare-row .old::before {
  content: ""; position: absolute; left: 0; top: .8em;
  width: 10px; height: 1px; background: var(--on-dark-muted);
}
.compare-row .new { color: var(--on-dark); font-size: 0.97rem; position: relative; padding-left: 22px; }
.compare-row .new::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold);
}

.tiers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: clamp(56px, 7vw, 96px);
}
.tier {
  position: relative;
  padding: clamp(28px, 3.4vw, 48px);
  background: var(--deep-2);
  border: 1px solid var(--on-dark-line);
  transition: border-color .5s var(--ease), transform .6s var(--ease);
}
.tier:hover { border-color: rgba(217,165,33,.6); transform: translateY(-4px); }
.tier-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.stars { color: var(--gold); letter-spacing: 4px; font-size: 0.9rem; }
.tier h3 { font-family: var(--serif); font-size: 1.7rem; font-weight: 700; color: #fff; margin-top: 18px; }
.tier .count { font-family: var(--latin); font-size: 0.85rem; color: var(--on-dark-muted); letter-spacing: .06em; }
.tier .count b { font-size: 2.4rem; font-weight: 300; color: #fff; margin-right: 6px; }
.tier p.desc { margin-top: 14px; color: var(--on-dark-muted); font-size: 0.95rem; }
.tier ul { margin-top: 28px; display: grid; gap: 12px; }
.tier li { display: flex; gap: 12px; font-size: 0.93rem; color: var(--on-dark); }
.tier li::before {
  content: ""; flex: none; margin-top: .62em;
  width: 12px; height: 1px; background: var(--gold);
}
.tier--plus { background: linear-gradient(160deg, #3a2660 0%, var(--deep-2) 60%); }
.flagship-foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px;
  margin-top: 48px;
  color: var(--on-dark-muted);
  font-size: var(--fs-small);
}

/* ==========================================================================
   服务方式
   ========================================================================== */
.process {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  position: relative;
}
.process::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 7px;
  height: 1px; background: var(--line-strong);
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
  transition: transform 1.6s var(--ease);
}
.process.is-in { --progress: 1; }
.step { position: relative; padding-right: 16px; }
.step .node {
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--brand);
  position: relative;
}
.step .node::after {
  content: ""; position: absolute; top: 3px; right: 3px; bottom: 3px; left: 3px; border-radius: 50%;
  background: var(--brand);
  transform: scale(0);
  transition: transform .5s var(--ease);
  transition-delay: calc(var(--i) * 0.16s + .2s);
}
.process.is-in .node::after { transform: scale(1); }
.step .no { display: block; margin-top: 22px; font-family: var(--latin); font-size: 0.78rem; letter-spacing: .12em; color: var(--muted); }
.step h3 { margin-top: 6px; font-size: 1.02rem; font-weight: 700; letter-spacing: .04em; }
.step p { margin-top: 6px; font-size: 0.85rem; line-height: 1.65; color: var(--muted); }

.promises {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: clamp(64px, 8vw, 112px);
  border-top: 1px solid var(--ink);
}
.promise { padding: 36px 32px 0 0; }
.promise + .promise { padding-left: 32px; border-left: 1px solid var(--line); }
.promise .big {
  font-family: var(--latin);
  font-weight: 300;
  font-size: clamp(2.6rem, 1.8rem + 2.4vw, 4.2rem);
  line-height: 1;
  color: var(--brand);
  letter-spacing: -0.02em;
}
.promise .big small { font-family: var(--sans); font-size: 0.32em; font-weight: 400; margin-left: 6px; letter-spacing: .04em; color: var(--ink); }
.promise h3 { margin-top: 20px; font-size: 1.05rem; font-weight: 700; }
.promise p { margin-top: 8px; font-size: 0.92rem; color: var(--muted); }

/* ==========================================================================
   客户案例
   ========================================================================== */
.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.case {
  display: flex; flex-direction: column;
  background: var(--paper);
  transition: transform .6s var(--ease), box-shadow .6s var(--ease);
}
.case:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -24px rgba(29, 20, 48, .35); }
.case-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.case-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.4s var(--ease);
}
.case:hover .case-media img { transform: scale(1.05); }
.case-media .chip {
  position: absolute; left: 20px; top: 20px;
  padding: 4px 10px;
  font-size: 11px; letter-spacing: .12em;
  background: rgba(255,255,255,.92);
  color: var(--ink);
}
.case-body { padding: 30px 30px 32px; display: flex; flex-direction: column; flex: 1; }
.case-metric {
  font-family: var(--latin);
  font-weight: 300;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--brand);
  letter-spacing: -0.01em;
}
.case-metric small { font-family: var(--sans); font-size: 0.38em; font-weight: 400; margin-left: 4px; color: var(--ink); }
.case-metric-label { margin-top: 10px; font-size: var(--fs-small); color: var(--muted); }
.case h3 { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.case p { margin-top: 12px; font-size: 0.93rem; color: var(--ink-2); }
.case .who { margin-top: auto; padding-top: 22px; font-size: var(--fs-micro); letter-spacing: .12em; color: var(--muted); }

/* ==========================================================================
   客户评价
   ========================================================================== */
.voices {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.quote-main blockquote {
  position: relative;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.3rem, 1rem + 1.1vw, 1.95rem);
  line-height: 1.75;
  color: var(--ink);
  padding-top: 72px;
}
.quote-main blockquote::before {
  content: "“";
  position: absolute; left: -6px; top: -18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 8rem;
  line-height: 1;
  color: var(--brand);
  opacity: .9;
}
.quote-cite {
  display: flex; align-items: center; gap: 16px;
  margin-top: 32px;
  font-size: var(--fs-small);
  color: var(--muted);
}
.quote-cite::before { content: ""; width: 32px; height: 1px; background: var(--brand); }
.quote-cite b { color: var(--ink); font-weight: 600; margin-right: 8px; }
.voices-eyebrow { margin-bottom: clamp(40px, 5vw, 64px); }
.quote-side { display: grid; gap: 20px; }
.quote-card {
  padding: 30px 32px;
  background: var(--paper);
  border-left: 2px solid var(--brand);
}
.quote-card p { font-family: var(--serif); font-weight: 700; font-size: 1.12rem; line-height: 1.75; }
.quote-card .quote-cite { margin-top: 18px; }
.voices-note { margin-top: 16px; font-size: var(--fs-micro); color: var(--muted); letter-spacing: .04em; }

/* ==========================================================================
   资质荣誉
   ========================================================================== */
.creds {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(32px, 5vw, 80px);
}
.cred-list { margin-top: 40px; border-top: 1px solid var(--line); }
.cred-list li {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.93rem;
}
.cred-list li span:last-child { color: var(--muted); font-family: var(--latin); font-size: 0.85rem; white-space: nowrap; }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  align-content: center;
}
.cert {
  position: relative;
  aspect-ratio: 1 / 1;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  overflow: hidden;
  transition: border-color .4s, box-shadow .5s var(--ease), transform .5s var(--ease);
}
.cert:hover { border-color: var(--brand); transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(29,20,48,.4); }
.cert img { width: 100%; height: 100%; object-fit: contain; }
.cert figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 10px 12px;
  font-size: 11.5px; line-height: 1.5;
  background: rgba(255,255,255,.96);
  border-top: 1px solid var(--line);
  transform: translateY(100%);
  transition: transform .45s var(--ease);
}
.cert:hover figcaption, .cert:focus-visible figcaption { transform: none; }

/* 灯箱 */
.lightbox {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 250;
  display: grid; place-items: center;
  padding: 48px 16px;
  background: rgba(16, 11, 26, .9);
  opacity: 0; visibility: hidden;
  transition: opacity .35s, visibility .35s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img { max-height: 82vh; width: auto; box-shadow: 0 30px 80px rgba(0,0,0,.5); background: #fff; }
.lightbox p { margin-top: 16px; color: #fff; text-align: center; font-size: var(--fs-small); }
.lightbox button { position: absolute; top: 20px; right: 20px; width: 44px; height: 44px; color: #fff; font-size: 28px; line-height: 1; }

/* ==========================================================================
   亿源商学 / 活动
   ========================================================================== */
.insights-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: clamp(40px, 5vw, 72px); }
.rail-ctrl { display: flex; gap: 10px; }
.rail-ctrl button {
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid var(--on-dark-line);
  display: grid; place-items: center;
  transition: background-color .3s, border-color .3s, opacity .3s;
}
.rail-ctrl button:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.5); }
.rail-ctrl button:disabled { opacity: .3; cursor: default; }
.rail-ctrl .arrow-l { transform: scaleX(-1); }
.rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: clamp(280px, 30vw, 420px);
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-left: max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter)));
  padding-right: var(--gutter);
  scroll-padding-left: max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter)));
  cursor: grab;
}
.rail::-webkit-scrollbar { display: none; }
.rail.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.rail.is-dragging * { pointer-events: none; }
.event { scroll-snap-align: start; }
.event-media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--deep-2); }
.event-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.event:hover .event-media img { transform: scale(1.05); }
.event .date { display: block; margin-top: 22px; font-family: var(--latin); font-size: 0.8rem; letter-spacing: .14em; color: var(--gold); }
.event h3 { margin-top: 8px; font-family: var(--serif); font-size: 1.2rem; font-weight: 700; line-height: 1.5; color: #fff; }
.event p { margin-top: 8px; font-size: 0.88rem; color: var(--on-dark-muted); }
.insights-foot { margin-top: 56px; }
.insights-foot .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; align-items: center; color: var(--on-dark-muted); font-size: var(--fs-small); }

/* ==========================================================================
   办公网络
   ========================================================================== */
.offices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.office-media { aspect-ratio: 16 / 10; overflow: hidden; }
.office-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.office:hover .office-media img { transform: scale(1.05); }
.office-body { padding-top: 26px; }
.office-city { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.office-city h3 { font-family: var(--serif); font-size: 1.6rem; font-weight: 700; }
.office-city span { font-family: var(--latin); font-size: 0.75rem; letter-spacing: .2em; color: var(--muted); }
.office address { margin-top: 16px; font-style: normal; font-size: 0.93rem; color: var(--ink-2); }
.office .role { margin-top: 6px; font-size: var(--fs-micro); letter-spacing: .12em; color: var(--brand); }

/* ==========================================================================
   行动号召 + 表单
   ========================================================================== */
.cta {
  position: relative;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.cta-bg { position: absolute; top: -10%; right: 0; bottom: -10%; left: 0; z-index: -2; }
.cta-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 60%; }
.cta::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(29,20,48,.95) 0%, rgba(29,20,48,.86) 48%, rgba(98,63,144,.55) 100%);
}
.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.cta .h2 { color: #fff; }
.cta-points { margin-top: 32px; display: grid; gap: 12px; }
.cta-points li { display: flex; gap: 14px; color: rgba(255,255,255,.82); }
.cta-points li::before { content: ""; flex: none; width: 14px; height: 1px; margin-top: .85em; background: var(--gold); }
.cta-phone { margin-top: 40px; }
.cta-phone small { display: block; font-size: var(--fs-micro); letter-spacing: .2em; color: rgba(255,255,255,.6); }
.cta-phone a { font-family: var(--latin); font-size: clamp(2rem, 1.4rem + 1.6vw, 2.8rem); font-weight: 300; letter-spacing: .02em; }

.form {
  padding: clamp(28px, 3.4vw, 48px);
  background: var(--paper);
  color: var(--ink);
}
.form h3 { font-family: var(--serif); font-size: 1.45rem; font-weight: 700; }
.form > p { margin-top: 6px; font-size: var(--fs-small); color: var(--muted); }
.field { position: relative; margin-top: 22px; }
.field label { display: block; font-size: var(--fs-micro); letter-spacing: .14em; color: var(--muted); margin-bottom: 4px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 0;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  outline: none;
  transition: border-color .3s;
  appearance: none;
  -webkit-appearance: none;
}
.field select { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%236e6779' stroke-width='1.5'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E") right 4px center / 12px no-repeat; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--brand); }
.form .btn { margin-top: 30px; width: 100%; justify-content: center; }
.form .fine { margin-top: 14px; font-size: 11.5px; color: var(--muted); text-align: center; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-error { margin-top: 14px; font-size: var(--fs-small); color: #b42318; text-align: center; }
.form .btn[disabled] { opacity: .6; cursor: wait; }
.form-done { display: none; padding: 40px 0 20px; text-align: center; }
.form.is-done .form-fields { display: none; }
.form.is-done .form-done { display: block; }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer { background: #140e22; color: var(--on-dark-muted); padding: clamp(64px, 8vw, 112px) 0 32px; font-size: var(--fs-small); }
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2fr));
  gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--on-dark-line);
}
.footer-brand img { width: 168px; }
.footer-brand p { margin-top: 22px; max-width: 22em; line-height: 1.85; }
.footer h4 { color: #fff; font-size: 0.9rem; font-weight: 600; letter-spacing: .1em; margin-bottom: 18px; }
.footer li + li { margin-top: 10px; }
.footer a { transition: color .3s; }
.footer a:hover { color: #fff; }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px;
  padding-top: 28px;
  font-size: var(--fs-micro);
  letter-spacing: .04em;
}
.footer-mascot { display: flex; align-items: center; gap: 12px; }
.footer-mascot img { width: 28px; }

/* ==========================================================================
   动效
   ========================================================================== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s var(--ease), transform 1.1s var(--ease);
  transition-delay: calc(var(--d, 0) * 1s);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }
.js [data-reveal="fade"] { transform: none; }
/* 裁切放在子元素上：IntersectionObserver 会把目标自身的 clip-path 计入可见性 */
.js [data-reveal="clip"] { opacity: 1; transform: none; }
.js [data-reveal="clip"] > img {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 1.4s var(--ease);
}
.js [data-reveal="clip"].is-in > img { clip-path: inset(0 0 0 0); }

.js .hero-title .line > span { transform: translateY(105%); transition: transform 1.3s var(--ease); }
.js .hero .eyebrow,
.js .hero-sub,
.js .hero-actions,
.js .hero-stats { opacity: 0; transform: translateY(18px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.js .hero-media { opacity: 0; transition: opacity 1.8s ease; }
.is-loaded .hero-media { opacity: 1; }
.is-loaded .hero-title .line > span { transform: none; }
.is-loaded .hero-title .line:nth-child(2) > span { transition-delay: .12s; }
.is-loaded .hero .eyebrow { opacity: 1; transform: none; transition-delay: .1s; }
.is-loaded .hero-sub { opacity: 1; transform: none; transition-delay: .45s; }
.is-loaded .hero-actions { opacity: 1; transform: none; transition-delay: .6s; }
.is-loaded .hero-stats { opacity: 1; transform: none; transition-delay: .8s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; transition-delay: 0s !important; }
  .js [data-reveal], .js [data-reveal="clip"] > img { opacity: 1; transform: none; clip-path: none; }
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .nav, .header-phone { display: none; }
  .header-cta { margin-left: auto; }
  .menu-btn { display: block; margin-left: 4px; }
  .services { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service { min-height: 240px; }
  .process { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 48px; }
  .process::before { display: none; }
  .cert-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .creds { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .section-head { grid-template-columns: 1fr; align-items: start; }
  .intro-grid { grid-template-columns: 1fr; gap: 20px; }
  .intro-foot { grid-template-columns: 1fr; gap: 28px; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.14); margin-top: 22px; }
  .compare-row { grid-template-columns: 1fr; gap: 10px; }
  .compare-head { display: none; }
  .tiers, .cases, .offices, .voices, .cta-grid { grid-template-columns: 1fr; }
  .promises { grid-template-columns: 1fr; }
  .promise, .promise + .promise { padding: 28px 0; border-left: 0; }
  .promise + .promise { border-top: 1px solid var(--line); }
  .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scroll-cue { display: none; }
  .hero-controls { top: auto; bottom: 24px; }
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  .brand { width: 132px; height: 33px; }
  .header .btn { display: none; }
  .hero-content { padding-top: calc(var(--header-h) + 40px); }
  .hero-title { letter-spacing: 0.01em; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }
  .stat { padding-right: 12px; }
  .stat + .stat { padding-left: 16px; }
  .stat:nth-child(3) { padding-left: 0; }
  .services { grid-template-columns: 1fr; }
  .service { min-height: 0; padding: 26px 22px; }
  .service h3 { margin-top: 20px; }
  .service .more { opacity: 1; transform: none; padding-top: 18px; }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .insights-head { flex-direction: column; align-items: flex-start; }
  .rail { grid-auto-columns: 82vw; gap: 16px; }
  .case-body { padding: 24px 22px 26px; }
  .quote-card { padding: 24px 22px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .intro-figure figcaption { max-width: 100%; position: static; padding: 14px 0 0; background: none; }
  .intro-figure { height: auto; overflow: visible; }
  .intro-figure img { position: static; height: 260px; }
  .tbc-toggle { bottom: 12px; right: 12px; }
}

/* ==========================================================================
   子页面通用组件
   ========================================================================== */
.nav a[aria-current="page"] { opacity: 1; }
.nav a[aria-current="page"]::after { transform: scaleX(1); }
.mobile-nav a.m-link[aria-current="page"] { color: var(--gold); }
.tbc-toggle[hidden] { display: none; }
.more-row { margin-top: 48px; display: flex; justify-content: flex-end; }

/* 页面标题区 */
.page-hero {
  position: relative;
  min-height: 72vh;
  min-height: 72svh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background: var(--deep);
  overflow: hidden;
  isolation: isolate;
}
.page-hero-media { position: absolute; top: -8%; right: 0; bottom: 0; left: 0; z-index: -2; }
.page-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.page-hero::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(20,13,34,.9) 0%, rgba(20,13,34,.62) 50%, rgba(20,13,34,.3) 100%),
    linear-gradient(0deg, rgba(20,13,34,.85) 0%, rgba(20,13,34,0) 55%);
}
.page-hero .wrap { padding-top: calc(var(--header-h) + 72px); padding-bottom: clamp(56px, 8vh, 96px); }
.crumbs { display: flex; gap: 10px; font-size: var(--fs-micro); letter-spacing: .14em; color: rgba(255,255,255,.6); margin-bottom: 28px; }
.crumbs a:hover { color: #fff; }
.crumbs span[aria-hidden] { opacity: .5; }
.page-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2.3rem, 1.3rem + 3.4vw, 4.4rem);
  line-height: 1.18;
  letter-spacing: .02em;
  max-width: 14em;
  text-wrap: balance;
}
.page-lead { margin-top: 24px; max-width: 36em; font-size: var(--fs-lead); line-height: 1.85; color: rgba(255,255,255,.8); }
.js .page-hero .crumbs,
.js .page-title,
.js .page-lead,
.js .page-hero .hero-actions { opacity: 0; transform: translateY(18px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.is-loaded .page-hero .crumbs { opacity: 1; transform: none; }
.is-loaded .page-title { opacity: 1; transform: none; transition-delay: .1s; }
.is-loaded .page-lead { opacity: 1; transform: none; transition-delay: .3s; }
.is-loaded .page-hero .hero-actions { opacity: 1; transform: none; transition-delay: .45s; }

/* 页内导航 */
.subnav {
  position: sticky; top: 0; z-index: 90;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.header.is-solid:not(.is-hidden) ~ main .subnav { top: var(--header-h); }
.subnav .wrap { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.subnav .wrap::-webkit-scrollbar { display: none; }
.subnav a {
  flex: none;
  padding: 18px 16px;
  font-size: .9rem; letter-spacing: .06em;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  transition: color .3s, border-color .3s;
}
.subnav a:hover { color: var(--ink); }
.subnav a.is-active { color: var(--brand); border-color: var(--brand); }

/* 双栏正文 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 96px);
  align-items: start;
}
.split-sticky { position: sticky; top: calc(var(--header-h) + 80px); }
.prose p + p { margin-top: 1.2em; }
.prose p { font-size: 1.05rem; line-height: 1.95; color: var(--ink-2); }

/* 数字矩阵 */
.figures {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}
.figure-item { padding: 32px 24px 32px 0; border-bottom: 1px solid var(--line); }
.figure-item:not(:nth-child(4n+1)) { padding-left: 24px; border-left: 1px solid var(--line); }
.figure-item .big {
  font-family: var(--latin); font-weight: 300;
  font-size: clamp(2.2rem, 1.6rem + 1.8vw, 3.4rem); line-height: 1;
  color: var(--brand); letter-spacing: -.01em;
}
.figure-item .big small { font-family: var(--sans); font-size: .34em; font-weight: 400; color: var(--ink); margin-left: 4px; }
.figure-item p { margin-top: 12px; font-size: .92rem; color: var(--muted); }
.figures-note { margin-top: 16px; font-size: var(--fs-micro); color: var(--muted); }

/* 使命愿景价值观 */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--on-dark-line); }
.pillar { padding: 40px 32px 8px 0; }
.pillar + .pillar { padding-left: 32px; border-left: 1px solid var(--on-dark-line); }
.pillar .label { font-size: var(--fs-micro); letter-spacing: .22em; color: var(--gold); }
.pillar h3 { margin-top: 18px; font-family: var(--serif); font-weight: 700; font-size: clamp(1.4rem, 1.1rem + 1vw, 2rem); line-height: 1.45; color: #fff; text-wrap: balance; }
.pillar p { margin-top: 14px; color: var(--on-dark-muted); font-size: .95rem; }
.principles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: clamp(56px, 7vw, 96px); background: var(--on-dark-line); border: 1px solid var(--on-dark-line); }
.principle { background: var(--deep); padding: 28px 24px; display: flex; gap: 16px; align-items: baseline; }
.principle span { font-family: var(--latin); font-size: .78rem; color: var(--on-dark-muted); letter-spacing: .1em; }
.principle b { font-family: var(--serif); font-size: 1.15rem; color: #fff; font-weight: 700; }

/* 时间线 */
.timeline { position: relative; }
.tl-item {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 32px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}
.tl-year {
  font-family: var(--latin);
  font-weight: 300;
  font-size: clamp(2.4rem, 1.8rem + 2vw, 3.8rem);
  line-height: 1;
  color: var(--brand);
  letter-spacing: -.02em;
}
.tl-year small { display: block; margin-top: 12px; font-family: var(--serif); font-size: 1.05rem; font-weight: 700; letter-spacing: .08em; color: var(--ink); }
.tl-body ul { display: grid; gap: 10px; }
.tl-body li { position: relative; padding-left: 22px; color: var(--ink-2); }
.tl-body li::before { content: ""; position: absolute; left: 0; top: .85em; width: 10px; height: 1px; background: var(--brand); }

/* 子公司 */
.entities { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.entity { padding: 22px 20px 22px 0; border-bottom: 1px solid var(--line); font-size: .95rem; display: flex; gap: 14px; }
.entity span { font-family: var(--latin); font-size: .75rem; color: var(--muted); padding-top: .25em; }

/* 服务清单表格 */
.pkg-switch { display: inline-flex; padding: 4px; background: var(--paper-2); border-radius: 2px; margin-bottom: 32px; }
.pkg-switch button { padding: 10px 22px; font-size: .92rem; font-weight: 600; letter-spacing: .04em; color: var(--muted); border-radius: 2px; transition: background-color .3s, color .3s; }
.pkg-switch button[aria-selected="true"] { background: var(--white); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.pkg-table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.pkg-table th { text-align: left; font-size: var(--fs-micro); font-weight: 600; letter-spacing: .16em; color: var(--muted); padding: 0 16px 14px 0; border-bottom: 1px solid var(--ink); }
.pkg-table td { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.pkg-table td:first-child { font-family: var(--latin); color: var(--muted); width: 56px; }
.pkg-table td:nth-child(2) { font-weight: 600; width: 26%; }
.pkg-table td:nth-child(3) { color: var(--ink-2); }
.pkg-table td:last-child { width: 88px; text-align: right; font-family: var(--latin); color: var(--muted); white-space: nowrap; }
.pkg-table tr.is-plus td { background: linear-gradient(90deg, rgba(98,63,144,.06), transparent); }
.pkg-table tr.is-plus td:nth-child(2)::after { content: "六星专属"; margin-left: 8px; padding: 1px 6px; font-size: 10.5px; font-weight: 600; color: var(--brand); border: 1px solid rgba(98,63,144,.4); vertical-align: 2px; }
.pkg-panel[hidden] { display: none; }
.pkg-note { margin-top: 20px; font-size: var(--fs-small); color: var(--muted); }

/* 每月服务日历 */
.calendar { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.cal-col { background: var(--deep-2); border: 1px solid var(--on-dark-line); padding: 28px 24px; }
.cal-col .when { font-family: var(--latin); font-size: 1.6rem; font-weight: 300; color: #fff; }
.cal-col .when small { font-family: var(--sans); font-size: .55em; margin-left: 4px; color: var(--on-dark-muted); }
.cal-col .stage { margin-top: 6px; font-size: var(--fs-micro); letter-spacing: .16em; color: var(--gold); }
.cal-col ul { margin-top: 22px; display: grid; gap: 10px; border-top: 1px solid var(--on-dark-line); padding-top: 18px; }
.cal-col li { font-size: .88rem; color: var(--on-dark); line-height: 1.6; }

/* 常见问题 */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; gap: 24px; align-items: center;
  padding: 26px 0;
  font-family: var(--serif); font-weight: 700; font-size: 1.15rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary i { position: relative; flex: none; width: 14px; height: 14px; }
.faq summary i::before, .faq summary i::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1.5px; background: var(--brand); transition: transform .4s var(--ease); }
.faq summary i::after { transform: rotate(90deg); }
.faq details[open] summary i::after { transform: rotate(0); }
.faq .answer { padding: 0 48px 28px 0; color: var(--ink-2); line-height: 1.9; }

/* 服务目录 */
.svc-block { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 96px); padding: clamp(56px, 7vw, 96px) 0; border-top: 1px solid var(--line); scroll-margin-top: calc(72px - clamp(56px, 7vw, 96px)); }
.svc-block:first-child { border-top: 0; padding-top: 0; }
.svc-block .no { font-family: var(--latin); font-size: .8rem; letter-spacing: .14em; color: var(--muted); }
.svc-block h2 { margin-top: 14px; }
.svc-block .intro { margin-top: 18px; color: var(--ink-2); }
.svc-block .side-link { margin-top: 28px; }
.svc-groups { display: grid; gap: 36px; }
.svc-group h3 { font-size: var(--fs-micro); font-weight: 600; letter-spacing: .2em; color: var(--brand); margin-bottom: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { padding: 7px 14px; font-size: .9rem; background: var(--white); border: 1px solid var(--line); transition: border-color .3s, color .3s; }
.tags li:hover { border-color: var(--brand); color: var(--brand); }
.svc-points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 40px; }
.svc-points li { padding-top: 18px; border-top: 1px solid var(--line); }
.svc-points b { display: block; font-family: var(--serif); font-size: 1.08rem; margin-bottom: 6px; }
.svc-points span { font-size: .92rem; color: var(--muted); }

/* 案例详情 */
.case-list { display: grid; gap: 0; border-top: 1px solid var(--ink); }
.case-row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 4fr) minmax(0, 4fr);
  gap: clamp(24px, 4vw, 64px);
  padding: clamp(40px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--line);
}
.case-row .tag { font-size: var(--fs-micro); letter-spacing: .16em; color: var(--brand); }
.case-row .case-metric { margin-top: 18px; }
.case-row h3 { margin-top: 0; }
.case-row .label { display: block; font-size: var(--fs-micro); letter-spacing: .2em; color: var(--muted); margin-bottom: 12px; }
.case-row p { color: var(--ink-2); font-size: .97rem; line-height: 1.9; }

/* 活动时间轴 */
.events-year { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 10fr); gap: 32px; padding: clamp(40px, 5vw, 72px) 0; border-top: 1px solid var(--line); }
.events-year > h2 { font-family: var(--latin); font-weight: 300; font-size: clamp(2.4rem, 1.8rem + 2vw, 3.8rem); line-height: 1; color: var(--brand); position: sticky; top: calc(var(--header-h) + 40px); align-self: start; }
.events-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 24px; }
.ev-card .ev-media { aspect-ratio: 3 / 2; overflow: hidden; background: var(--paper-2); }
.ev-card .ev-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.ev-card:hover .ev-media img { transform: scale(1.05); }
.ev-card .meta { display: flex; gap: 12px; margin-top: 18px; font-size: var(--fs-micro); letter-spacing: .12em; color: var(--muted); }
.ev-card .meta b { color: var(--brand); font-weight: 600; }
.ev-card h3 { margin-top: 8px; font-family: var(--serif); font-size: 1.2rem; font-weight: 700; line-height: 1.5; text-wrap: balance; }
.ev-card p { margin-top: 6px; font-size: .9rem; color: var(--muted); }

/* 联系页 */
.office-detail { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 80px); padding: clamp(48px, 6vw, 80px) 0; border-top: 1px solid var(--line); align-items: center; }
.office-detail:first-of-type { border-top: 0; padding-top: 0; }
.office-detail .office-media { aspect-ratio: 16 / 9; }
.office-detail dl { margin-top: 28px; display: grid; gap: 18px; }
.office-detail dt { font-size: var(--fs-micro); letter-spacing: .2em; color: var(--muted); }
.office-detail dd { margin-top: 4px; font-size: 1.02rem; }
.office-detail .actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 20px; }
.contact-cta { background: var(--deep); color: #fff; }

@media (max-width: 1180px) {
  .calendar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .split, .svc-block, .office-detail, .tl-item, .events-year, .case-row { grid-template-columns: 1fr; }
  .split-sticky, .events-year > h2 { position: static; }
  .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .figure-item:not(:nth-child(4n+1)) { padding-left: 0; border-left: 0; }
  .figure-item:nth-child(2n) { padding-left: 20px; border-left: 1px solid var(--line); }
  .pillars { grid-template-columns: 1fr; }
  .pillar + .pillar { padding-left: 0; border-left: 0; border-top: 1px solid var(--on-dark-line); }
  .pillar { padding-bottom: 32px; }
  .entities { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .calendar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .events-grid { grid-template-columns: 1fr 1fr; }
  .svc-points { grid-template-columns: 1fr; }
  .page-hero { min-height: 60svh; }
}
@media (max-width: 600px) {
  .entities, .calendar, .events-grid, .principles { grid-template-columns: 1fr; }
  .pkg-table thead { display: none; }
  .pkg-table, .pkg-table tbody, .pkg-table tr, .pkg-table td { display: block; width: 100% !important; }
  .pkg-table tr { padding: 16px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 40px 1fr auto; gap: 4px 12px; }
  .pkg-table td { padding: 0; border: 0; text-align: left !important; }
  .pkg-table td:nth-child(3) { grid-column: 2 / 4; font-size: .88rem; }
  .pkg-table td:last-child { grid-row: 1; grid-column: 3; }
  .faq .answer { padding-right: 0; }
  .more-row { justify-content: flex-start; }
}
.split .h2 { font-size: clamp(1.7rem, 1.1rem + 1.5vw, 2.5rem); }
@media (max-width: 600px) {
  .pkg-switch { display: flex; width: 100%; }
  .pkg-switch button { flex: 1; padding: 10px 8px; font-size: .85rem; }
}

/* 导航防挤压：文字不换行，空间不足时先隐藏电话 */
.nav a, .btn, .header-phone { white-space: nowrap; }
@media (max-width: 1360px) {
  .header-phone { display: none; }
  .header .wrap { gap: 24px; }
  .nav a { padding: 8px 11px; }
}

/* 页内导航跳转后的停靠位置：标题露在页头与导航条下方 */
main:has(.subnav) .section[id] { scroll-margin-top: calc(72px - var(--section)); }
/* 页头隐藏/显示只做位移动画，不触发重排 */
.header { will-change: transform; }
.svc-block:first-child { scroll-margin-top: 72px; }

/* ==========================================================================
   旧版浏览器兼容（360 / QQ / 搜狗等国产浏览器的旧 Chromium 内核）
   ========================================================================== */
/* 1. 不支持 aspect-ratio：用 padding 撑出比例 */
@supports not (aspect-ratio: 1 / 1) {
  .case-media, .event-media, .office-media, .ev-card .ev-media { position: relative; height: 0; padding-top: 75%; }
  .office-media { padding-top: 62.5%; }
  .office-detail .office-media { padding-top: 56.25%; }
  .ev-card .ev-media { padding-top: 66.667%; }
  .case-media img, .event-media img, .office-media img, .ev-card .ev-media img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
  .cert { display: block; height: 0; padding: 100% 0 0; }
  .cert img { position: absolute; top: 18px; left: 18px; width: calc(100% - 36px); height: calc(100% - 36px); }
}
/* 2. 不支持 clamp()：给出固定字号与间距 */
@supports not (width: clamp(1px, 1px, 1px)) {
  :root { --fs-display: 4.2rem; --fs-h2: 2.6rem; --fs-h3: 1.4rem; --fs-lead: 1.15rem; --gutter: 40px; --section: 128px; }
}
/* 3. 不支持弹性布局 gap（由 main.js 检测并加上 .no-flexgap） */
.no-flexgap .eyebrow::before, .no-flexgap .quote-cite::before { margin-right: 12px; }
.no-flexgap .btn .arrow, .no-flexgap .link-arrow .arrow, .no-flexgap .service .more .arrow, .no-flexgap .m-link .arrow { margin-left: 12px; }
.no-flexgap .header .wrap > * + *, .no-flexgap .header-cta > * + * { margin-left: 24px; }
.no-flexgap .nav > * + *, .no-flexgap .subnav .wrap > * + *, .no-flexgap .rail-ctrl > * + * { margin-left: 6px; }
.no-flexgap .hero-actions > *, .no-flexgap .tags > li, .no-flexgap .office-detail .actions > * { margin: 0 12px 12px 0; }
.no-flexgap .hero-controls > * + *, .no-flexgap .tier-top > * + *, .no-flexgap .office-city > * + *, .no-flexgap .footer-bottom > * + *,
.no-flexgap .cred-list li > * + *, .no-flexgap .faq summary > * + *, .no-flexgap .insights-head > * + *, .no-flexgap .flagship-foot > * + * { margin-left: 16px; }
.no-flexgap .crumbs > * + *, .no-flexgap .ev-card .meta > * + *, .no-flexgap .footer-mascot > * + *,
.no-flexgap .principle > * + *, .no-flexgap .entity > * + *, .no-flexgap .tbc-toggle > * + * { margin-left: 10px; }
.no-flexgap .tier li::before, .no-flexgap .cta-points li::before { margin-right: 12px; }

/* 404 */
.page-hero--tall { min-height: 100vh; min-height: 100svh; align-items: center; }

.footer .icp { color: inherit; text-decoration: none; }
.footer .icp:hover { text-decoration: underline; }

/* 手机首屏保持满屏 */
@media (max-width: 820px) { .hero { min-height: 100vh; min-height: 100svh; } }