:root {
  --blue: #013172;
  --red: #1a7063;
  --violet: #1f56a8;
  --ink: #14171f;
  --muted: #4d5869;
  --paper: #f6f8fb;
  --white: #ffffff;
  --line: #dde3eb;
  --night: #0b1d3a;
  --serif: Georgia, "Times New Roman", serif;
  --sans: "Segoe UI", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --max: 1000px;
  --pad: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 92px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 21px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(var(--max), 100% - var(--pad) * 2); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--white); padding: 8px 14px; z-index: 50; }
.skip:focus { left: 12px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.header-row { display: flex; align-items: center; gap: 28px; height: 76px; }
.brand img { width: 108px; height: auto; }
.nav { display: flex; gap: 22px; font-size: 16px; margin-right: auto; white-space: nowrap; }
.nav a { text-decoration: none; color: var(--muted); transition: color .2s; text-underline-offset: 6px; }
.nav a:hover, .nav a:focus-visible { text-decoration: underline; text-decoration-thickness: 1px; }
.nav a:hover { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 12px; font-size: 16px; white-space: nowrap; }
.link-btn { background: none; border: 0; cursor: pointer; color: var(--muted); padding: 8px 4px; transition: color .2s; }
.link-btn:hover { color: var(--blue); }
.motion-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  background: none; border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; cursor: pointer; font-size: 14px; color: var(--muted);
  transition: border-color .2s, color .2s;
}
.motion-toggle:hover { border-color: var(--violet); color: var(--ink); }
.motion-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--violet); }
.motion-toggle[aria-pressed="true"] .motion-dot { background: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border-radius: 999px;
  font-size: 17px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background .2s var(--ease), color .2s, border-color .2s, box-shadow .2s;
}
.btn:active { box-shadow: inset 0 0 0 999px rgba(0,0,0,.08); }
.btn-solid { background: var(--blue); color: var(--white); border: 1px solid var(--blue); }
.btn-solid:hover { background: #02408f; box-shadow: 0 6px 18px -10px rgba(1,49,114,.6); }
.btn-line { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.btn-line:hover { background: var(--blue); color: var(--white); }
.header-actions .btn { min-height: 42px; padding: 0 18px; font-size: 15px; }

.eyebrow {
  font-size: 14px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--red); margin-bottom: 20px;
}
.eyebrow-light { color: #9fe1cb; }
.section-title { font-size: clamp(34px, 4.2vw, 52px); line-height: 1.12; max-width: 18em; }
.lede { color: var(--muted); max-width: 34em; }
.small { font-size: 16px; color: var(--muted); max-width: 46em; }
.small-light { color: #b9c0d4; }

/* Hero */
.hero { padding: 96px 0 56px; }
.hero-title { font-size: clamp(38px, 5.2vw, 66px); line-height: 1.08; max-width: 15.5em; }
.hero-sub { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; margin-top: 40px; align-items: end; }
.hero-sub p { color: var(--muted); max-width: 32em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-sub .hero-cta { justify-content: flex-end; }

/* Stage */
.stage-wrap { padding-bottom: 120px; }
.stage-ctrl { display: flex; align-items: flex-start; gap: 40px; margin-top: 24px; }
.stage-phases { display: flex; flex: none; gap: 8px; }
.phase {
  display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 18px;
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  cursor: pointer; font-size: 16px; font-weight: 600; color: var(--muted);
  transition: border-color .2s, color .2s, background .2s;
}
.phase-no { font-family: var(--serif); font-weight: 400; font-size: 15px; color: #97a3b6; transition: color .2s; }
.phase:hover { border-color: var(--violet); color: var(--ink); }
.phase[aria-pressed="true"] { border-color: var(--blue); background: var(--blue); color: var(--white); }
.phase[aria-pressed="true"] .phase-no { color: #9cc0f2; }
.stage-note { font-size: 17px; color: var(--muted); max-width: 34em; min-height: 3.2em; padding-top: 10px; }
.stage-note.is-swap { animation: noteIn .24s var(--ease); }
@keyframes noteIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.stage {
  position: relative; margin: 0; height: 440px; border-radius: 6px; overflow: hidden;
  background: var(--white); border: 1px solid var(--line);
}
.stage-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage-labels { position: absolute; inset: 0; pointer-events: none; }
.sl {
  position: absolute; top: 28px; font-size: 13px; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
}
.sl-left { left: 32px; }
.sl-mid { left: 50%; transform: translateX(-50%); color: var(--violet); }
.sl-right { right: 32px; }
.sl-short { display: none; }
.stage-cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 14px 32px;
  font-size: 14px; color: var(--muted); background: linear-gradient(transparent, rgba(255,255,255,.95) 40%);
}

/* Statement (dark, contained) */
.statement-inner, .fees > .wrap {
  background: var(--night); color: #eef0f6; border-radius: 6px;
  padding: 96px clamp(24px, 6vw, 80px);
}
.statement { padding-bottom: 120px; }
.statement-title { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.1; max-width: 16em; }
.statement-title em { font-style: italic; color: #9cc0f2; }
.statement-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 56px; color: #c6cbd9; }
.video-slot {
  display: flex; gap: 20px; align-items: center; margin-top: 56px;
  padding: 24px 28px; border: 1px dashed rgba(255,255,255,.28); border-radius: 6px;
  font-size: 17px;
}
.video-slot strong { display: block; font-weight: 600; }
.video-slot span { color: #a7aec2; }
.video-mark {
  flex: none; width: 52px; height: 52px; border-radius: 50%; border: 1px solid currentColor; position: relative; opacity: .7;
}
.video-mark::after {
  content: ""; position: absolute; left: 21px; top: 17px;
  border-left: 14px solid currentColor; border-top: 9px solid transparent; border-bottom: 9px solid transparent;
}
.video-slot.slim { border-color: var(--line); color: var(--ink); margin-top: 40px; }
.video-slot.slim span { color: var(--muted); }

/* Principles carousel */
.principles { padding-bottom: 120px; }
.section-head { margin-bottom: 48px; }
.section-head.split { display: flex; justify-content: space-between; align-items: end; gap: 40px; }
.carousel { border-top: 1px solid var(--ink); }
.carousel-track { position: relative; min-height: 300px; }
.slide {
  position: absolute; inset: 0; padding: 48px 0 24px;
  display: grid; grid-template-columns: 160px 1fr; grid-template-rows: auto 1fr; column-gap: 40px;
  opacity: 0; transform: translateX(12px); visibility: hidden;
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
}
.slide.is-active { opacity: 1; transform: none; visibility: visible; position: relative; }
.slide-no { grid-row: span 2; font-family: var(--serif); font-size: 88px; line-height: 1; color: var(--violet); }
.slide h3 { font-size: clamp(30px, 3.4vw, 44px); line-height: 1.15; margin-bottom: 20px; }
.slide p { color: var(--muted); max-width: 34em; }
.carousel-ctrl { display: flex; align-items: center; gap: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.round {
  width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line); background: var(--white);
  cursor: pointer; font-size: 18px; transition: border-color .2s, color .2s, background .2s;
}
.round:active { background: #e9eef5; }
.round:hover { border-color: var(--blue); color: var(--blue); }
.dots { display: flex; gap: 10px; }
.dots button { width: 34px; height: 24px; padding: 0; border: 0; background: linear-gradient(var(--line), var(--line)) center / 100% 4px no-repeat; cursor: pointer; border-radius: 2px; transition: background-size .25s var(--ease); }
.dots button:hover { background-image: linear-gradient(var(--muted), var(--muted)); }
.dots button[aria-selected="true"] { background-image: linear-gradient(var(--red), var(--red)); background-size: 100% 6px; }

/* Services tabs */
.services { padding-bottom: 120px; }
.tabs { display: grid; grid-template-columns: 300px 1fr; gap: 56px; }
.tab-list { display: flex; flex-direction: column; border-left: 1px solid var(--line); }
.tab-list button {
  text-align: left; background: none; border: 0; border-left: 3px solid transparent; margin-left: -2px;
  padding: 16px 0 16px 24px; cursor: pointer; font-size: 19px; color: var(--muted);
  transition: color .25s, border-color .25s;
}
.tab-list button[aria-selected="true"] { color: var(--ink); border-left-color: var(--blue); font-weight: 600; }
.tab-list button:hover { color: var(--blue); }
.tab-panel { padding-top: 8px; animation: panelIn .24s var(--ease); }
.tab-panel h3 { font-size: clamp(30px, 3.2vw, 42px); line-height: 1.15; margin-bottom: 24px; }
.tab-panel p { color: var(--muted); max-width: 30em; }
@keyframes panelIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Fit */
.fit { padding-bottom: 120px; }
.fit-inner {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px 64px;
  border-top: 1px solid var(--ink); padding-top: 64px;
}
.fit-inner .lede { margin-top: 24px; }
.fit-list { list-style: none; margin: 0; padding: 0; align-self: end; }
.fit-list li {
  font-family: var(--serif); font-size: clamp(24px, 2.4vw, 30px);
  padding: 16px 0; border-bottom: 1px solid var(--line);
  transition: color .2s, transform .25s var(--ease);
}
.fit-list li:hover { color: var(--blue); transform: translateX(8px); }
.fit-note { grid-column: 1 / -1; background: var(--white); border-left: 3px solid var(--violet); padding: 24px 28px; }

/* Records */
.records { padding-bottom: 120px; }
.records-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 16px; margin: 48px 0 20px; }
.record-slot {
  aspect-ratio: 4 / 3; border: 1px dashed #c3ccd9; border-radius: 6px;
  display: grid; place-items: center; font-size: 15px; color: var(--muted); background: #f1f4f8;
}
.record-slot:first-child { aspect-ratio: auto; }

/* Fees */
.fees { padding-bottom: 120px; }
.fee-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; margin-top: 56px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.16); }
.fee-label { display: block; font-size: 15px; color: #a7aec2; letter-spacing: .06em; text-transform: uppercase; }
.fee-num { display: block; font-family: var(--serif); font-size: clamp(54px, 6vw, 80px); line-height: 1.1; color: #fff; }
.fee-split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.fee-split > div { border-left: 1px solid rgba(255,255,255,.2); padding-left: 20px; }
.fee-pct { display: block; font-size: 15px; color: #9fe1cb; font-weight: 600; }
.fee-amt { display: block; font-family: var(--serif); font-size: 36px; color: #fff; }
.fee-when { display: block; font-size: 17px; color: #b9c0d4; }
.fee-cost { margin-top: 32px; color: #d4d8e4; max-width: 40em; }
.steps { list-style: none; padding: 0; margin: 56px 0 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.steps button {
  width: 100%; text-align: left; background: none; border: 0; border-top: 2px solid rgba(255,255,255,.2);
  padding: 18px 0 10px; color: #c6cbd9; cursor: pointer; font-size: 18px; transition: border-color .3s, color .3s;
}
.steps button span { display: block; font-family: var(--serif); font-size: 28px; color: #8592a8; }
.steps button[aria-expanded="true"] { border-top-color: var(--red); color: #fff; }
.steps button[aria-expanded="true"] span { color: #9cc0f2; }
.steps button:hover { color: #fff; border-top-color: rgba(255,255,255,.5); }
.steps p { font-size: 17px; color: #b9c0d4; animation: panelIn .24s var(--ease); }

/* FAQ & contact */
.faq { padding-bottom: 120px; }
.faq-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  list-style: none; cursor: pointer; padding: 22px 40px 22px 0; position: relative; font-weight: 600;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 4px; top: 18px; font-size: 26px; font-weight: 300; color: var(--violet);
  transition: transform .3s var(--ease);
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list summary { transition: color .2s; }
.faq-list summary:hover { color: var(--blue); }
.faq-list details[open] p { animation: panelIn .24s var(--ease); }
.faq-list details p { padding: 0 0 22px; color: var(--muted); }
.contact { margin-top: 120px; border-top: 1px solid var(--ink); padding-top: 64px; }
.contact-title { font-size: clamp(38px, 4.8vw, 60px); line-height: 1.1; margin-bottom: 20px; }
.contact p { color: var(--muted); margin-bottom: 32px; }

.site-footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 15px; color: var(--muted); }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; }

/* Dialog */
.preview { border: 0; border-radius: 6px; padding: 40px; max-width: 480px; width: calc(100% - 40px); background: var(--white); color: var(--ink); }
.preview::backdrop { background: rgba(14, 20, 36, .45); }
.preview h2 { font-size: 32px; margin-bottom: 16px; }
.preview p:not(.eyebrow) { color: var(--muted); margin-bottom: 28px; font-size: 18px; }

/* Reveal: only hidden when JS has confirmed it runs */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* Global pause + reduced motion */
.motion-paused *, .motion-paused *::before, .motion-paused *::after {
  animation: none !important;
  transition: none !important;
}
.motion-paused .reveal { opacity: 1 !important; transform: none !important; }
.motion-paused { scroll-behavior: auto; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 1060px) {
  .header-row { gap: 20px; }
  .nav { gap: 18px; font-size: 15px; }
  .header-actions { gap: 8px; }
  .stage-ctrl { flex-direction: column; gap: 8px; }
}
@media (max-width: 960px) {
  .nav { display: none; }
  .hero-sub, .statement-cols, .tabs, .fit-inner, .fee-grid, .faq-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-sub .hero-cta { justify-content: flex-start; }
  .steps { grid-template-columns: 1fr 1fr; }
  .tab-list { flex-direction: row; overflow-x: auto; border-left: 0; border-bottom: 1px solid var(--line); }
  .tab-list button { border-left: 0; border-bottom: 3px solid transparent; margin: 0 0 -1px; padding: 12px 16px; white-space: nowrap; }
  .tab-list button[aria-selected="true"] { border-bottom-color: var(--blue); }
}
@media (max-width: 640px) {
  :root { --pad: 20px; }
  body { font-size: 19px; }
  .header-row { height: 64px; gap: 12px; }
  .brand img { width: 84px; }
  .header-actions { gap: 8px; margin-left: auto; }
  .motion-toggle [data-motion-label] { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .motion-toggle { padding: 10px 12px; }
  .link-btn { display: none; }
  .header-actions .btn { padding: 0 14px; font-size: 14px; }
  .hero { padding: 56px 0 40px; }
  .stage { height: 300px; }
  .stage-phases { display: grid; grid-template-columns: repeat(3, 1fr); width: 100%; gap: 6px; }
  .phase { justify-content: center; padding: 0 8px; font-size: 15px; gap: 6px; }
  .phase-no { font-size: 13px; }
  .stage-note { font-size: 16px; }
  [id] { scroll-margin-top: 80px; }
  .stage-labels { inset: 16px 14px auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .sl { position: static; transform: none; font-size: 11px; letter-spacing: .08em; }
  .sl-left { text-align: left; } .sl-mid { text-align: center; } .sl-right { text-align: right; }
  .sl-full { display: none; } .sl-short { display: inline; }
  .stage-cap { padding: 10px 14px; font-size: 12px; }
  .stage-wrap, .statement, .principles, .services, .fit, .records, .fees, .faq { padding-bottom: 72px; }
  .statement-inner, .fees > .wrap { padding: 56px 22px; }
  .slide { grid-template-columns: 1fr; }
  .slide-no { grid-row: auto; font-size: 56px; margin-bottom: 12px; }
  .carousel-track { min-height: 380px; }
  .records-grid { grid-template-columns: 1fr 1fr; }
  .record-slot:first-child { grid-column: 1 / -1; aspect-ratio: 16 / 9; }
  .fee-split { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .video-slot { padding: 18px; align-items: flex-start; }
  .contact { margin-top: 72px; }
  .footer-row { flex-direction: column; align-items: flex-start; }
}

/* Bilingual review control */
.language-toggle { flex-shrink:0; border:1px solid var(--blue); border-radius:999px; background:transparent; color:var(--blue); padding:7px 12px; font-size:14px; cursor:pointer; min-height:38px; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 { font-family:var(--sans); line-height:1.35; }
html[lang="zh-CN"] .eyebrow { letter-spacing:.08em; }
@media (min-width:961px) { .header-row { gap:16px; } .nav { gap:14px; } .header-actions { gap:8px; } }
@media (max-width:600px) { .header-actions { gap:6px; } .language-toggle { padding:6px 9px; } .header-actions .btn { padding-inline:12px; } }
html[lang="zh-CN"] .hero-title { font-size:clamp(36px,4.3vw,56px); }

/* Keep core advantages visible while the detail carousel remains interactive. */
.experience-block h3 { color:#fff; font:600 26px/1.4 var(--sans); margin-bottom:18px; }
.experience-block:last-child { grid-column:1 / -1; max-width:44em; }
.advantage-overview { list-style:none; padding:0; margin:0 0 36px; display:grid; grid-template-columns:1fr 1fr; gap:16px 36px; }
.advantage-overview li { font-size:21px; font-weight:600; color:var(--blue); padding-bottom:14px; border-bottom:1px solid var(--line); }
@media(max-width:640px) { .advantage-overview { grid-template-columns:1fr; gap:14px; } .experience-block h3 { font-size:24px; } }

.fee-principles { display:grid; gap:22px; margin:36px 0; color:#c6cbd9; max-width:44em; }
.subject-questions { margin-top:40px; }
.fees .subject-questions { margin-inline:auto; color:#fff; }
.fees .subject-questions p { color:#c6cbd9; }
.request-section { padding-top:36px; }
.product-categories { padding-bottom:100px; }
.product-categories .lede { margin-top:24px; max-width:40em; }
.product-category-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:40px 28px; margin-top:40px; }
.product-placeholder { aspect-ratio:4/3; background:#eef2f7; border:1px dashed #b4bfcf; display:flex; align-items:center; justify-content:center; padding:24px; color:var(--muted); text-align:center; font-size:18px; }
.product-category h3 { margin-top:18px; font:600 26px/1.4 var(--sans); }
@media(max-width:640px) { .product-category-grid { grid-template-columns:1fr; gap:32px; } .product-categories { padding-bottom:64px; } }
.fees .subject-questions summary:hover, .fees .subject-questions summary:focus-visible { color:#b8d2f6; }
.fees .subject-questions details { border-bottom-color:rgba(255,255,255,.2); }

/* ==========================================================================
   2026-10-05 全站设计提升层（13 页共用）
   方向：专业 B2B 采购服务。品牌蓝 #013172 为主色，品牌红 #1a7063 只作细线与重点；
   冷中性底色替代米色；取消衬线体与紫色。形状规则：按钮与标签用胶囊，卡片/图框/输入框 8px，大色块 12px。
   ========================================================================== */
:root {
  --sans: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --serif: var(--sans);
  --blue-600: #0b4a9c;
  --red-ink: #0b5f5a;
  --radius: 8px;
  --radius-lg: 12px;
  --frame: #d3dce8;
}
body { text-rendering: optimizeLegibility; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2 { font-weight: 700; letter-spacing: 0; }
html[lang="zh-CN"] h3 { font-weight: 600; }
html[lang="zh-CN"] em { font-style: normal; }
.statement-title em { color: #9cc0f2; }
.fee-num, .fee-amt, .slide-no, .steps button span, .phase-no { font-variant-numeric: tabular-nums; font-weight: 700; letter-spacing: -.01em; }
.fee-num { letter-spacing: -.02em; }

/* 小标题：红色短线 + 文字，不用全大写宽字距标签 */
.eyebrow { display: flex; align-items: center; gap: 12px; font-size: 15px; letter-spacing: .06em; color: var(--red-ink); margin-bottom: 18px; }
.eyebrow::before { content: ""; flex: none; width: 24px; height: 2px; background: var(--red); }
.eyebrow-light, .eyebrow-light::before { color: #9fe1cb; }
.eyebrow-light::before { background: #9fe1cb; }
html[lang="zh-CN"] .eyebrow { letter-spacing: .06em; }

/* 页头：白底与 Logo 白底一致；Logo 正片叠底，任何浅底都不露白框 */
.site-header { background: rgba(255, 255, 255, .96); }
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 24px -22px rgba(11, 29, 58, .55); }
.header-row { height: 72px; }
.nav a { color: #354052; }
.nav a:hover, .nav a:focus-visible { color: var(--blue); }
.nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; text-decoration-color: var(--red); }
.header-actions a.link-btn { text-decoration: none; }
.menu-btn { display: none; min-height: 42px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 15px; }
.mobile-nav { display: none; }
@media (max-width: 960px) {
  .menu-btn { display: inline-flex; align-items: center; }
  .mobile-nav:not([hidden]) { display: block; border-top: 1px solid var(--line); background: #fff; box-shadow: 0 18px 30px -24px rgba(11, 29, 58, .5); }
  .mobile-nav ul { list-style: none; margin: 0; padding: 8px 0 16px; }
  .mobile-nav a { display: flex; justify-content: space-between; padding: 14px 0; text-decoration: none; font-size: 18px; border-bottom: 1px solid var(--line); }
  .mobile-nav a[aria-current="page"] { color: var(--blue); font-weight: 600; box-shadow: inset 3px 0 0 var(--red); padding-left: 12px; }
}
@media (max-width: 640px) { .header-row { height: 64px; } .menu-btn { padding: 0 12px; font-size: 14px; } }

/* 按钮：胶囊；文字对比度 ≥ 4.5:1；按下有触感 */
.btn { white-space: nowrap; transition: background .2s var(--ease), color .2s, border-color .2s, box-shadow .2s, transform .15s var(--ease); }
.btn:active { transform: translateY(1px); box-shadow: none; }
.btn-solid:hover { background: var(--blue-600); border-color: var(--blue-600); box-shadow: 0 10px 22px -14px rgba(1, 49, 114, .75); }
.btn-line { background: #fff; }
:focus-visible { outline-color: #1f56a8; }
.statement-inner :focus-visible, .fees :focus-visible, .dark-block :focus-visible, .entry-grid :focus-visible, .done-card :focus-visible, .demo-bar :focus-visible { outline-color: #9cc0f2; }

/* 深色内容块：品牌深蓝 + 右上角一处克制的蓝色光晕 */
.statement-inner, .fees > .wrap {
  border-radius: var(--radius-lg);
  background: radial-gradient(90% 70% at 100% 0%, rgba(31, 86, 168, .38), transparent 60%), var(--night);
}
.fee-pct { color: #9fe1cb; }

/* 图片位置统一：冷灰底 + 点阵（呼应首页示意图），实线细框，8px 圆角 */
.product-placeholder, .record-slot {
  border: 1px solid var(--frame); border-radius: var(--radius); color: var(--muted);
  background: radial-gradient(#cdd6e2 1px, transparent 1.2px) 0 0 / 18px 18px, linear-gradient(180deg, #f3f6fa, #e8edf4);
}
.product-placeholder { position: relative; flex-direction: column; gap: 14px; font-size: 16px; }
.product-placeholder svg { width: 34%; height: auto; color: var(--blue); opacity: .55; transition: transform .45s var(--ease), opacity .3s; }
.product-category:hover .product-placeholder svg, .product-category:focus-within .product-placeholder svg { opacity: .9; transform: translateY(-4px); }
.product-category:hover .product-placeholder, .product-category:focus-within .product-placeholder { border-color: #9fb4d3; }
.product-category h3 { font-size: 22px; }
.video-slot { border-radius: var(--radius); }

/* 页脚（13 页统一） */
.site-foot, .site-footer { border-top: 1px solid var(--line); background: #fff; padding: 56px 0 28px; font-size: 15px; color: var(--muted); }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px 40px; }
.foot-brand p { margin-top: 14px; max-width: 22em; line-height: 1.6; }
.foot-col { display: grid; align-content: start; gap: 10px; }
.foot-h { font-weight: 600; color: var(--ink); margin-bottom: 2px; }
.foot-col a { color: var(--muted); text-decoration: none; }
.foot-col a:hover, .foot-col a:focus-visible { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.foot-note { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-brand { grid-column: 1 / -1; } }

/* 滚动揭示：GSAP 接管时不再叠加 CSS 过渡；暂停或减少动态时一律直接可见 */
.js.gsap-on .reveal { transition: none; transform: none; }
.motion-paused .reveal { visibility: visible !important; }
@media (prefers-reduced-motion: reduce) { .js .reveal { visibility: visible !important; } }

/* Coordinated contrast and expressive FAQ interactions */
.tab-list button[role="tab"][aria-selected="true"],
.tab-list button[role="tab"][aria-selected="true"]:hover { background:#1a7063; color:#ffffff; }
.tab-list button[role="tab"][aria-selected="true"] * { color:inherit; }
.faq-list details { border-radius:10px; transition:background .35s,box-shadow .35s; }
.faq-list summary { padding-left:18px; padding-right:54px; transition:color .3s,background .3s,padding .35s; border-radius:10px; }
.faq-list summary::after { right:18px; color:#1a7063; transition:transform .5s cubic-bezier(.2,.8,.2,1),color .3s; }
.faq-list summary:hover,.faq-list summary:focus-visible { background:#e3f6ee; color:#1a7063; padding-left:32px; }
.faq-list details[open] { background:#f1faf6; box-shadow:0 12px 28px rgba(15,40,36,.08); }
.faq-list details[open] summary { background:#1a7063; color:#ffffff; padding-left:28px; }
.faq-list details[open] summary::after { color:#ffffff; transform:rotate(135deg) scale(1.2); }
.faq-list details p { padding:24px 28px 28px; color:#1a7063; }
.faq-list details[open] p { animation:none; }
.fees .subject-questions summary { color:#ffffff; }
.fees .subject-questions summary::after { color:#6ee7b7; }
.fees .subject-questions summary:hover,.fees .subject-questions summary:focus-visible { background:#0b5f5a; color:#ffffff; }
.fees .subject-questions details[open] { background:#1a7063; }
.fees .subject-questions details[open] summary { background:#6ee7b7; color:#1f2d29; }
.fees .subject-questions details[open] summary::after { color:#1f2d29; }
.fees .subject-questions details p { color:#ffffff; }
@keyframes homePanelIn { from {opacity:0;transform:translateX(44px) translateY(16px)} to {opacity:1;transform:translateX(0) translateY(0)} }
html.home-motion-paused .faq-list summary { transition:none; }
@media(prefers-reduced-motion:reduce) { .faq-list summary,.faq-list summary::after,.faq-list details { transition:none; } }