/* =========================================================
   标晟（江苏）企业管理咨询有限公司 · 企业官网
   White / minimal / elegant theme
   ========================================================= */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f8;
  --bg-gray: #f1f2f4;
  --ink: #14181c;
  --ink-2: #555555;
  --muted: #555555;
  --line: #e7eaed;
  --accent: #0078d4;
  --accent-dark: #005a9e;
  --accent-soft: #ebeef9;
  --gold: #0078d4;
  --radius: 14px;
  --shadow: 0 20px 50px -18px rgba(15, 30, 40, 0.16);
  --font-serif: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  font-weight: 500;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

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

/* ---------------- Header ---------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: #ffffff;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px -18px rgba(15, 30, 40, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 48px;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  flex: none;
}

.brand-logo {
  display: block;
  height: 42px;
  width: auto;
  transition: opacity 0.3s ease;
}

.brand:hover .brand-logo { opacity: 0.8; }

.footer-logo { height: 36px; }

.brand-text { line-height: 1.2; }

.brand-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 2px;
}

.brand-sub {
  display: block;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 2.5px;
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 30px; flex-wrap: wrap; }

.main-nav a {
  position: relative;
  font-size: 14.5px;
  color: #595959;
  font-weight: 600;
  padding: 6px 0;
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav a:hover { color: var(--accent); }

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.main-nav a.active { color: var(--accent); font-weight: 700; }

/* hamburger */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 11px;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 26px; }

.nav-toggle.open span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 20px; transform: rotate(-45deg); }

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  letter-spacing: 1.5px;
  cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.btn .arrow { transition: transform 0.35s ease; }

.btn:hover .arrow { transform: translateX(5px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 30px -12px rgba(0, 120, 212, 0.45);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 20px 38px -12px rgba(0, 120, 212, 0.5);
}

.btn-ghost {
  border: 1px solid var(--accent);
  color: var(--accent);
  background: #fff;
  font-weight: 700;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

.btn-light {
  background: #fff;
  color: var(--accent-dark);
  font-weight: 700;
}

.btn-light:hover { transform: translateY(-3px); box-shadow: 0 18px 34px -14px rgba(0, 0, 0, 0.35); }

/* ---------------- Page banner (sub pages) ---------------- */

.page-banner {
  padding: 170px 0 70px;
  background:
    radial-gradient(1200px 400px at 85% -10%, var(--accent-soft) 0%, transparent 60%),
    linear-gradient(180deg, #fdfdfd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}

.page-banner .crumb {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.page-banner .crumb a { transition: color 0.25s; }

.page-banner .crumb a:hover { color: var(--accent); }

.page-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5vw, 52px);
  letter-spacing: 4px;
  font-weight: 700;
  color: #4d4d4d;
}

.page-banner .en {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 5px;
  color: var(--gold);
  text-transform: uppercase;
}

/* ---------------- Section framework ---------------- */

.section { padding: 100px 0; }

.section.soft { background: var(--bg-soft); }

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

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 16px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.section-head.center .eyebrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 3px;
  font-weight: 700;
  line-height: 1.35;
  color: #4d4d4d;
}

.section-head p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 16px;
}

/* ---------------- Reveal on scroll ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }
.reveal.d4 { transition-delay: 0.4s; }

/* ---------------- Hero (index) · banner style ---------------- */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(448px, 62vh, 624px);
  padding: 112px 0 56px;
  overflow: hidden;
  background: #eef1f6;
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 0.9s ease, transform 6s ease;
  transform: scale(1);
}

.hero-bg.is-active {
  opacity: 1;
  transform: scale(1.04);
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 6;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0.8px solid rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-arrow:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 12px 26px -10px rgba(0, 120, 212, 0.55);
}

.hero-arrow.prev { left: 30px; }
.hero-arrow.next { right: 30px; }

.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 6;
  display: flex;
  gap: 8px;
}

.hero-dots button {
  width: 26px;
  height: 3px;
  border: none;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  padding: 0;
  transition: all 0.35s ease;
}

.hero-dots button:hover { background: rgba(255, 255, 255, 0.85); }

.hero-dots button.active {
  width: 38px;
  background: var(--accent);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(8, 10, 18, 0.82) 0%,
    rgba(8, 10, 18, 0.6) 34%,
    rgba(8, 10, 18, 0.22) 62%,
    rgba(8, 10, 18, 0) 80%);
}

.hero-eyebrow {
  display: block;
  font-size: 13px;
  letter-spacing: 5px;
  color: #fff;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero-content {
  position: relative;
  width: 100%;
  padding-left: 88px;
}

.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 13.5px;
  letter-spacing: 2px;
  padding: 7px 16px;
  border-radius: 4px;
  margin-bottom: 28px;
  box-shadow: 0 10px 24px -10px rgba(0, 120, 212, 0.5);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.2vw, 48px);
  line-height: 1.3;
  letter-spacing: 3px;
  font-weight: 700;
  color: #fff;
}

.hero-lead {
  margin-top: 16px;
  max-width: 560px;
  color: #fff;
  font-size: 14.5px;
}

.hero-lead + .hero-lead {
  margin-top: 10px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-actions .btn-primary {
  background: #ffffff;
  color: var(--accent);
  font-weight: 700;
  border: 1px solid #ffffff;
  box-shadow: 0 14px 30px -12px rgba(0, 0, 0, 0.35);
}

.hero-actions .btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 20px 38px -12px rgba(0, 120, 212, 0.5);
}

/* ---------------- Category chips ---------------- */

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  padding: 10px 22px;
  border: 1px solid #d9def2;
  border-radius: 8px;
  background: #fff;
  font-size: 14.5px;
  letter-spacing: 1px;
  color: var(--accent);
  font-weight: 700;
  transition: all 0.3s ease;
  cursor: default;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-3px);
}

/* ---------------- About brief ---------------- */

.brief-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr;
  gap: 28px 72px;
  align-items: stretch;
}

/* 让标题与渐变卡直接参与网格布局，图片与卡片上下边对齐 */
.brief-text { display: contents; }

.brief-text .section-head { grid-column: 2; grid-row: 1; }

.brief-text .brief-flow { grid-column: 2; grid-row: 2; }

.brief-media { grid-column: 1; grid-row: 2; align-self: start; }

.brief-text p { color: var(--ink-2); margin-bottom: 18px; }

.brief-text p strong { color: var(--ink); }

.brief-media { position: relative; }

.brief-media img {
  width: 100%;
  height: 396px;
  min-height: 0;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.6s ease;
}

.brief-media img:hover { transform: scale(1.015); }

.brief-media .exp-tag {
  position: absolute;
  right: -20px;
  bottom: -24px;
  background: var(--accent);
  color: #fff;
  border-radius: 16px;
  padding: 22px 28px;
  text-align: center;
  box-shadow: 0 18px 40px -16px rgba(0, 120, 212, 0.55);
}

.brief-media .exp-tag b {
  display: block;
  font-family: var(--font-serif);
  font-size: 30px;
}

.brief-media .exp-tag span { font-size: 12px; letter-spacing: 2px; opacity: 0.85; }

/* ---------------- Service cards ---------------- */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }

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

.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 32px;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}

.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--accent), #3d5bc4);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

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

.card .icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: all 0.4s ease;
}

.card:hover .icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(-8deg) scale(1.06);
}

.card .icon svg { width: 24px; height: 24px; }

.card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 1px;
  margin-bottom: 12px;
  color: #4d4d4d;
}

.card p { color: var(--muted); font-size: 15px; }

.card .more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 1px;
}

.card .more i { transition: transform 0.3s ease; font-style: normal; }

.card:hover .more i { transform: translateX(5px); }

.card .num-ghost {
  position: absolute;
  right: 18px;
  top: 10px;
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  color: var(--bg-soft);
  -webkit-text-stroke: 1px var(--line);
  line-height: 1;
  transition: color 0.4s ease, transform 0.4s ease;
}

.card:hover .num-ghost { color: var(--accent-soft); transform: translateY(-4px); }

/* big dual cards (business) */

.duo-card {
  border-radius: 20px;
  padding: 48px 44px;
  background: #fff;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.duo-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }

.duo-card .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  padding: 6px 14px;
  border-radius: 8px;
  margin-bottom: 22px;
}

.duo-card.dc1 .tag { background: var(--accent-soft); color: var(--accent); }
.duo-card.dc2 .tag { background: rgba(0, 120, 212, 0.14); color: var(--gold); }

.duo-card h3 {
  font-family: var(--font-serif);
  font-size: 25px;
  letter-spacing: 1px;
  margin-bottom: 14px;
  color: #4d4d4d;
}

.duo-card > p { color: var(--muted); margin-bottom: 24px; }

.duo-card ul li {
  position: relative;
  padding: 11px 0 11px 26px;
  color: var(--ink-2);
  font-size: 15px;
  border-bottom: 1px dashed var(--line);
  transition: color 0.3s ease, padding-left 0.3s ease;
}

.duo-card ul li:last-child { border-bottom: none; }

.duo-card ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 19px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent);
  transform: rotate(45deg);
  transition: background 0.3s ease;
}

.duo-card.dc2 ul li::before { background: var(--gold); }

.duo-card ul li:hover { color: var(--accent); padding-left: 32px; }

/* ---------------- Steps / process ---------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}

.step {
  position: relative;
  padding: 30px 22px 26px;
  text-align: center;
  transition: background 0.35s ease, transform 0.35s ease;
  border-radius: 12px;
}

.step:hover { background: #fff; transform: translateY(-6px); box-shadow: 0 14px 34px -18px rgba(15, 30, 40, 0.22); }

.step .no {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.step h4 {
  font-size: 17px;
  letter-spacing: 1px;
  margin-bottom: 8px;
  color: #4d4d4d;
}

.step p { font-size: 13.5px; color: var(--muted); line-height: 1.65; }

.step::after {
  content: "→";
  position: absolute;
  right: -12px;
  top: 34px;
  color: var(--line);
  font-size: 20px;
  z-index: 1;
}

.step:last-child::after { display: none; }

/* ---------------- Cases ---------------- */

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.case-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease;
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.case-card .imgwrap {
  position: relative;
  overflow: hidden;
  height: 240px;
}

.case-card .imgwrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), filter 0.5s ease;
}

.case-card:hover .imgwrap img { transform: scale(1.08); }

.case-card .cat {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 2px;
  backdrop-filter: blur(6px);
}

.case-card .zoom {
  position: absolute;
  right: 16px;
  top: 16px;
  z-index: 2;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 120, 212, 0.9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.6) rotate(-30deg);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.case-card:hover .zoom { opacity: 1; transform: scale(1) rotate(0); }

.case-card .zoom svg { width: 17px; height: 17px; }

.case-card .meta {
  padding: 20px 22px 22px;
}

.case-card .meta h3 {
  font-size: 14px;
  letter-spacing: 0;
  line-height: 1.5;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.3s ease;
}

.case-card:hover .meta h3 { color: var(--accent); }

.case-card .meta span {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 1px;
}

/* ------- 首页案例展示 · 微软式浅蓝板块 ------- */

.cases-band {
  background: #dcecf8;
}

.cases-band .eyebrow { color: var(--accent); }

.cases-band .case-card {
  border: none;
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 3px 14px rgba(15, 30, 40, 0.07);
}

.cases-band .case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 50px -20px rgba(15, 30, 40, 0.3);
}

.cases-band .case-card .imgwrap {
  margin: 14px 14px 0;
  border-radius: 10px;
  height: auto;
  aspect-ratio: 3 / 4;
}

.cases-band .case-card .imgwrap img {
  object-fit: contain;
  background: #fff;
}

.cases-band .case-card .zoom { display: none; }

.cases-band .case-card .meta {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
}

.cases-band .case-card:hover .meta h3 { color: #4d4d4d; }

.cases-band .case-card .meta h3 { transform: translateY(-2px); }

.cases-band .case-card .meta span {
  transform: translateY(2px);
  margin-top: auto;
  padding: 9px 20px;
  background: var(--accent);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: 6px;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.cases-band .case-card .meta span:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -10px rgba(0, 120, 212, 0.55);
}

/* ------- 案例页 · 竖版 3:4 图卡 ------- */

.case-portrait .case-card .imgwrap {
  height: auto;
  aspect-ratio: 3 / 4;
  background: #eef2f6;
}

.case-portrait .case-card .imgwrap img {
  object-fit: contain;
}

.case-portrait .case-card:hover .imgwrap img {
  transform: none;
}

/* Lightbox */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(12, 18, 22, 0.88);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.lightbox.open { opacity: 1; pointer-events: auto; }

.lightbox .lb-inner {
  max-width: min(1100px, 88vw);
  transform: scale(0.94);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.lightbox.open .lb-inner { transform: scale(1); }

.lightbox img {
  width: 100%;
  max-height: 74vh;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 40px 90px -20px rgba(0, 0, 0, 0.6);
}

.lightbox .lb-cap {
  margin-top: 18px;
  text-align: center;
  color: rgba(255, 255, 255, 0.92);
  font-size: 15px;
  letter-spacing: 1px;
}

.lightbox .lb-cap small { display: block; color: rgba(255, 255, 255, 0.55); margin-top: 4px; letter-spacing: 2px; }

.lb-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.lb-btn:hover { background: #fff; color: var(--ink); }

.lb-prev { left: 28px; }
.lb-next { right: 28px; }

.lb-close {
  position: absolute;
  top: 26px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: transparent;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lb-close:hover { background: #fff; color: var(--ink); transform: rotate(90deg); }

/* ---------------- News ---------------- */

.news-tabs {
  display: inline-flex;
  background: var(--bg-gray);
  border-radius: 8px;
  padding: 5px;
  margin-bottom: 44px;
}

.news-tabs button {
  border: none;
  background: transparent;
  padding: 11px 34px;
  border-radius: 6px;
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.35s ease;
}

.news-tabs button.active {
  background: #fff;
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 6px 18px -8px rgba(15, 30, 40, 0.25);
}

.news-list { display: none; }

.news-list.active { display: block; animation: fadeUp 0.5s ease; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

.news-item {
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 0.3s ease;
}

.news-item:hover { background: var(--bg-soft); }

.news-item .row {
  display: flex;
  align-items: baseline;
  gap: 26px;
  padding: 28px 18px;
}

.news-item .date {
  font-family: var(--font-serif);
  color: var(--muted);
  font-size: 15px;
  min-width: 96px;
  letter-spacing: 1px;
}

.news-item h3 {
  font-size: 17.5px;
  font-weight: 600;
  color: #4d4d4d;
  letter-spacing: 0.5px;
  flex: 1;
  transition: color 0.3s ease, transform 0.3s ease;
}

.news-item:hover h3 { color: var(--accent); transform: translateX(6px); }

.news-item .tag-mini {
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px 13px;
  letter-spacing: 1px;
  white-space: nowrap;
}

.news-item .body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.news-item.open .body { max-height: 320px; }

.news-item .body p {
  padding: 0 18px 28px 140px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------------- Contact page ---------------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}

.info-card {
  display: flex;
  gap: 18px;
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  margin-bottom: 18px;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.info-card:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  box-shadow: 0 14px 30px -18px rgba(15, 30, 40, 0.25);
}

.info-card .icon {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.info-card .icon svg { width: 22px; height: 22px; }

.info-card h4 { font-size: 14px; color: var(--muted); letter-spacing: 2px; margin-bottom: 4px; }

.info-card p { font-size: 16.5px; font-weight: 600; letter-spacing: 0.5px; color: #4d4d4d; }

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 46px 44px;
  box-shadow: 0 24px 60px -30px rgba(15, 30, 40, 0.18);
}

.form-card h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.form-card > p { color: var(--muted); font-size: 14.5px; margin-bottom: 30px; }

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

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--ink-2);
  margin-bottom: 8px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: var(--bg-soft);
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(0, 120, 212, 0.1);
}

.field textarea { min-height: 120px; resize: vertical; }

.form-note { margin-top: 14px; font-size: 13px; color: var(--muted); text-align: center; }

.form-tip {
  margin-top: 16px;
  text-align: center;
  font-size: 14px;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.form-tip.show { opacity: 1; }

/* ---------------- CTA band ---------------- */

.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, var(--accent-dark) 0%, var(--accent) 55%, #3d5bc4 100%);
  color: #fff;
  padding: 84px 0;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-inner h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.6vw, 38px);
  letter-spacing: 3px;
}

.cta-inner p { margin-top: 12px; opacity: 0.85; letter-spacing: 1px; }

/* ---------------- Footer ---------------- */

.footer-social {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 56px 0;
}

.footer-social .fs-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  text-align: center;
}

.fs-title {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #4d4d4d;
}

.social-links { display: flex; justify-content: center; gap: 22px; }

.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

.social-btn svg { width: 36px; height: 36px; border-radius: 8px; display: block; transition: transform 0.35s ease; }

.social-btn:hover { transform: translateY(-4px); box-shadow: 0 14px 28px -14px rgba(15, 30, 40, 0.35); border-color: transparent; }

.social-btn:hover svg { transform: scale(1.06); }

/* footer main (light gray) */

.footer-main { background: var(--bg-gray); padding: 70px 0 0; }

.footer-cols {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 60px;
  padding-bottom: 56px;
}

.fcol h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 4px;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 14px;
  color: var(--muted);
}

.fcol h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: #4a525a;
}

.fcol ul li { margin-bottom: 13px; }

.fcol ul li a {
  color: var(--muted);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 1px;
  position: relative;
  transition: color 0.3s ease, padding-left 0.3s ease;
}

.fcol ul li a:hover { color: var(--accent); padding-left: 10px; }

.fcol ul li a::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%) scale(0);
  transition: transform 0.3s ease;
}

.fcol ul li a:hover::before { transform: translateY(-50%) scale(1); }

.fcol .contact-line {
  color: var(--muted);
  font-weight: 500;
  font-size: 14.5px;
  line-height: 2.1;
  letter-spacing: 0.5px;
}

.fcol .contact-line b { color: var(--muted); font-weight: 500; }

.footer-brandcol .brand-name { font-size: 22px; }

.footer-brandcol p {
  margin-top: 16px;
  color: #3d454d;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.9;
  max-width: 320px;
}

.footer-bottom {
  border-top: 1px solid #e0e3e6;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 1px;
}

.footer-bottom a { transition: color 0.3s; }

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

/* ---------------- To top ---------------- */

.to-top {
  position: fixed;
  right: 28px;
  bottom: 30px;
  z-index: 90;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  color: var(--ink);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all 0.4s ease;
  box-shadow: 0 12px 28px -12px rgba(15, 30, 40, 0.3);
}

.to-top.show { opacity: 1; pointer-events: auto; transform: none; }

.to-top:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-4px); }

/* ---------------- Responsive ---------------- */

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
  .step::after { display: none; }
  .hero { min-height: 416px; }
  .hero-overlay {
    background: linear-gradient(90deg,
      rgba(8, 10, 18, 0.85) 0%,
      rgba(8, 10, 18, 0.65) 45%,
      rgba(8, 10, 18, 0.25) 75%,
      rgba(8, 10, 18, 0) 90%);
  }
}

@media (max-width: 860px) {
  .header-inner { justify-content: space-between; gap: 16px; }
  .brief-media img { height: 360px; min-height: 0; }
  .brief-grid { grid-template-rows: auto; }
  .brief-text .section-head,
  .brief-text .brief-flow,
  .brief-media { grid-column: auto; grid-row: auto; }
  .brand-logo { height: 34px; }
  .hero { min-height: 368px; padding: 92px 0 44px; }
  .hero-overlay { background: rgba(8, 10, 18, 0.72); }
  .hero-content { padding-left: 58px; }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 18px 28px 28px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 50px -30px rgba(15, 30, 40, 0.3);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.35s ease;
  }
  .main-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 12px 0; font-size: 16px; width: 100%; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .brief-grid, .contact-grid { grid-template-columns: 1fr; }
  .brief-media { order: -1; }
  .section { padding: 72px 0; }
  .footer-cols { grid-template-columns: 1fr; gap: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .news-item .body p { padding-left: 18px; }
  .page-banner { padding: 140px 0 54px; }
  .lb-prev { left: 10px; }
  .lb-next { right: 10px; }
  .hero-arrow { width: 38px; height: 38px; font-size: 15px; }
  .hero-arrow.prev { left: 14px; }
  .hero-arrow.next { right: 14px; }
  .float-card.fc1 { left: 8px; }
}

@media (max-width: 560px) {
  .case-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .news-item .row { flex-wrap: wrap; gap: 10px; }
  .news-item h3 { width: 100%; }
}

/* ---------------- 活力配色（取自 logo：亮蓝 #0080D0 · 天蓝 #00A0F8 · 宝蓝 #183090 · 金橙 #F8B028 · 橙 #F88008 · 橙红 #E82818） ---------------- */

/* 眉题：蓝→橙渐变文字与装饰线 */
.eyebrow {
  background: linear-gradient(90deg, #0078d4 15%, #f88008 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.eyebrow::before,
.section-head.center .eyebrow::after {
  background: linear-gradient(90deg, #0078d4, #f8b028);
}

/* 主按钮：天蓝→宝蓝渐变，描边按钮悬停填充渐变 */
.btn-primary {
  background: linear-gradient(120deg, #00a0f8 0%, #0078d4 48%, #183090 100%);
}

.btn-primary:hover {
  background: linear-gradient(120deg, #0078d4 0%, #183090 100%);
}

.btn-ghost:hover {
  background: linear-gradient(120deg, #00a0f8, #0078d4);
  color: #fff;
  border-color: transparent;
}

/* 底部 CTA：宝蓝→天蓝渐变 + 金橙光斑 + 金橙按钮 */
.cta-band {
  background: linear-gradient(115deg, #183090 0%, #1058b0 48%, #00a0f8 100%);
}

.cta-band::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  right: -140px;
  top: -180px;
  background: radial-gradient(circle, rgba(248, 176, 40, 0.4) 0%, transparent 65%);
  pointer-events: none;
}

.cta-band .btn-light {
  background: linear-gradient(120deg, #f8b028 0%, #f88008 100%);
  color: #fff;
  box-shadow: 0 16px 32px -12px rgba(232, 120, 8, 0.55);
}

.cta-band .btn-light:hover {
  background: linear-gradient(120deg, #f88008 0%, #e82818 100%);
}

/* 卡片图标四色轮换：蓝 / 橙 / 宝蓝 / 金橙 */
.card .icon { transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1); }

.grid-4 .card:nth-child(4n+1) .icon { background: #e6f3fd; color: #0078d4; }
.grid-4 .card:nth-child(4n+2) .icon { background: #fdeeda; color: #f88008; }
.grid-4 .card:nth-child(4n+3) .icon { background: #e8ecfa; color: #183090; }
.grid-4 .card:nth-child(4n+4) .icon { background: #fdf3d9; color: #d98a00; }

.card:hover .icon { transform: translateY(-4px) scale(1.07); }

/* 品类标签彩色轮换 */
.chip-row .chip:nth-child(4n+1) { color: #0078d4; border-color: #bcdcf6; }
.chip-row .chip:nth-child(4n+2) { color: #f88008; border-color: #f8d4b4; }
.chip-row .chip:nth-child(4n+3) { color: #183090; border-color: #c3caf0; }
.chip-row .chip:nth-child(4n+4) { color: #d98a00; border-color: #f2ddaf; }

.chip-row .chip:hover { background: #fff8ec; }

/* 案例卡：品类角标渐变、查看详情悬停橙红 */
.case-card .cat {
  background: linear-gradient(120deg, #0078d4, #00a0f8);
  color: #fff;
}

.cases-band .case-card .meta span:hover {
  background: linear-gradient(120deg, #f88008, #e82818);
  box-shadow: 0 12px 24px -10px rgba(232, 40, 24, 0.45);
}

/* 首页轮播指示条激活：金橙 */
.hero-dots button.active {
  background: #f8b028;
}

/* 境内服务卡标签：宝蓝底白字 */
.duo-card.dc1 .tag {
  background: linear-gradient(120deg, #183090, #1058b0);
  color: #fff;
}

/* 内页 banner：标题蓝渐变 + 彩色光斑 */
.page-banner h1 {
  background: linear-gradient(90deg, #183090 0%, #0078d4 55%, #00a0f8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-banner {
  background:
    radial-gradient(620px 240px at 90% 0%, rgba(0, 160, 248, 0.13) 0%, transparent 65%),
    radial-gradient(540px 240px at 4% 120%, rgba(248, 176, 40, 0.15) 0%, transparent 60%),
    radial-gradient(1200px 400px at 85% -10%, var(--accent-soft) 0%, transparent 60%),
    linear-gradient(180deg, #fdfdfd 0%, #ffffff 100%);
}

/* 导航选中下划线：蓝→橙渐变 */
.main-nav a::after {
  background: linear-gradient(90deg, #0078d4, #f88008);
}

/* 信息中心页签选中：橙色文字 */
.news-tabs button.active { color: #f88008; }

/* 返回顶部：渐变底 + 悬停金橙 */
.to-top {
  background: linear-gradient(135deg, #00a0f8, #0078d4);
  color: #fff;
  border: none;
}

.to-top:hover {
  background: linear-gradient(135deg, #f8b028, #f88008);
  border: none;
}

/* ---------------- 氛围背景增强（11-03） ---------------- */

/* 服务理念三卡：图片打底 + 白色柔光罩，保证文字可读 */
.phil .card {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.phil .card:nth-child(1) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.72) 45%, rgba(255, 255, 255, 0.9) 100%),
    url("../img/phil-1.jpg");
}

.phil .card:nth-child(2) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.72) 45%, rgba(255, 255, 255, 0.9) 100%),
    url("../img/phil-2.jpg");
}

.phil .card:nth-child(3) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.72) 45%, rgba(255, 255, 255, 0.9) 100%),
    url("../img/phil-3.jpg");
}

/* 全链条服务：logo 橙调浅底（再调浅） */
.process-band {
  background: linear-gradient(180deg, #fffdf8 0%, #fff2e0 100%);
}

.process-band .step .no { color: #e8821e; }

.process-band .step:hover { background: #fff; }

/* 业务范围概览：抽象图片打底 + 白色柔光（加深：右侧透出更多图片） */
.overview-band {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.86) 0%, rgba(255, 255, 255, 0.6) 45%, rgba(255, 255, 255, 0.25) 100%),
    url("../img/overview-bg.jpg") center/cover no-repeat;
}

/* 信息中心列表区：蓝橙氛围渐变底 */
.news-band {
  background:
    radial-gradient(560px 280px at 96% 4%, rgba(0, 160, 248, 0.1) 0%, transparent 65%),
    radial-gradient(520px 280px at 2% 100%, rgba(248, 176, 40, 0.13) 0%, transparent 60%),
    linear-gradient(180deg, #f7fafd 0%, #fdf6ec 100%);
}

/* 南京角标：蓝色渐变，左上深 → 右下浅 */
.brief-media .exp-tag {
  background: linear-gradient(135deg, #183090 0%, #1058b0 42%, #0078d4 72%, #00a0f8 100%);
  box-shadow: 0 18px 40px -16px rgba(16, 48, 144, 0.5);
}

/* 信息中心条目改为白色卡片，在渐变底上更突出 */
.news-band .news-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 3px 14px rgba(15, 30, 40, 0.05);
}

.news-band .news-item:hover {
  background: #fff;
  border-color: #bcdcf6;
  box-shadow: 0 14px 30px -14px rgba(15, 30, 40, 0.18);
}

/* ---------------- 11-03 二次氛围微调 ---------------- */

/* 首页新闻三卡：适配背景底图 + 白色柔光罩 */
.home-news .grid-3 .card {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.home-news .grid-3 .card:nth-child(1) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.8) 55%, rgba(255, 255, 255, 0.92) 100%),
    url("../img/c01.jpg");
}

.home-news .grid-3 .card:nth-child(2) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.8) 55%, rgba(255, 255, 255, 0.92) 100%),
    url("../img/c13.jpg");
}

.home-news .grid-3 .card:nth-child(3) {
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.8) 55%, rgba(255, 255, 255, 0.92) 100%),
    url("../img/c04.jpg");
}

/* about 关键词强调：加粗加深，与理念卡标题同色 */
.em-ink {
  font-weight: 700;
  color: #4d4d4d;
}

/* ---------------- CTA 横幅精致化（版式比例与文案保持不变 · 11-03） ---------------- */

.cta-band {
  background: linear-gradient(108deg, #0a1a4d 0%, #123a86 46%, #0f6fd0 100%);
  padding: 84px 0;
}

/* 细密网格：只在左侧淡出，避免整片噪点 */
.cta-band::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(100deg, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.25) 55%, transparent 85%);
  mask-image: linear-gradient(100deg, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.25) 55%, transparent 85%);
}

/* 右上金橙光晕 + 左下冷蓝光晕 */
.cta-band::after {
  width: 560px;
  height: 560px;
  right: -170px;
  top: -240px;
  background: radial-gradient(circle, rgba(248, 176, 40, 0.28) 0%, rgba(248, 176, 40, 0.06) 42%, transparent 66%);
}

.cta-band .cta-inner {
  align-items: center;
  gap: 48px;
}

.cta-band .cta-copy {
  position: relative;
  padding-left: 28px;
}

/* 文案左侧细金线：增加版面秩序感 */
.cta-band .cta-copy::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, #f8b028 0%, rgba(248, 176, 40, 0.85) 40%, rgba(248, 176, 40, 0) 100%);
}

.cta-band h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.4;
  letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 2px 18px rgba(6, 14, 40, 0.35);
}

.cta-band p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.6px;
  color: rgba(255, 255, 255, 0.76);
}

/* 金色渐变按钮：圆角、投影、悬停上浮 + 箭头右移 */
.cta-band .btn-light {
  background: linear-gradient(120deg, #f8b028 0%, #f88008 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 16px 34px;
  font-weight: 700;
  letter-spacing: 1.2px;
  box-shadow: 0 18px 38px -18px rgba(248, 128, 8, 0.85);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, background 0.35s ease;
}

.cta-band .btn-light:hover {
  background: linear-gradient(120deg, #f88008 0%, #e82818 100%);
  transform: translateY(-3px);
  box-shadow: 0 24px 44px -18px rgba(232, 40, 24, 0.6);
}

.cta-band .btn-light .arrow {
  display: inline-block;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.cta-band .btn-light:hover .arrow {
  transform: translateX(6px);
}

@media (max-width: 760px) {
  .cta-band { padding: 56px 0; }
  .cta-band .cta-copy { padding-left: 20px; }
}

/* ---------------- 关于我们 · 悬停动效（11-03） ---------------- */

/* 简介三段：合并为一个整体渐变卡片，左侧竖线仅悬停时展开 */
.brief-flow {
  position: relative;
  padding: 24px 30px 14px;
  border-radius: 14px;
  background: linear-gradient(115deg, rgba(0, 120, 212, 0.08) 0%, rgba(0, 160, 248, 0.045) 52%, rgba(248, 176, 40, 0.05) 100%);
  box-shadow: 0 14px 32px -24px rgba(16, 58, 110, 0.4);
  transition: background 0.45s ease, box-shadow 0.45s ease;
}

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

.brief-flow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, #0078d4 0%, #00a0f8 55%, #f8b028 100%);
  transform: scaleY(0);
  transform-origin: center top;
  opacity: 0;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}

.brief-flow:hover {
  background: linear-gradient(115deg, rgba(0, 120, 212, 0.11) 0%, rgba(0, 160, 248, 0.06) 52%, rgba(248, 176, 40, 0.07) 100%);
  box-shadow: 0 20px 40px -24px rgba(16, 58, 110, 0.5);
}

.brief-flow:hover::before {
  transform: scaleY(1);
  opacity: 1;
}

.brief-flow .em-ink,
.brief-flow strong {
  transition: color 0.35s ease;
}

.brief-flow:hover .em-ink,
.brief-flow:hover strong {
  color: var(--accent);
}

/* 南京角标：悬停上浮放大 + 渐变流动 + 光泽扫过 */
.brief-media .exp-tag {
  overflow: hidden;
  background-size: 200% 200%;
  background-position: 0% 0%;
  transition:
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.5s ease,
    background-position 0.8s ease;
}

.brief-media .exp-tag::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 34%, rgba(255, 255, 255, 0.42) 50%, transparent 66%);
  transform: translateX(-135%);
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.brief-media .exp-tag b,
.brief-media .exp-tag span {
  display: block;
  position: relative;
  z-index: 1;
  transition: letter-spacing 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.brief-media .exp-tag:hover {
  transform: translateY(-8px) scale(1.035);
  background-position: 100% 100%;
  box-shadow: 0 30px 58px -18px rgba(16, 48, 144, 0.72);
}

.brief-media .exp-tag:hover::after {
  transform: translateX(135%);
}

.brief-media .exp-tag:hover b {
  transform: translateY(-1px);
  letter-spacing: 2px;
}

.brief-media .exp-tag:hover span {
  letter-spacing: 2.8px;
}