/* ==========================================================================
   云帆航信 - 企业官网单页样式
   设计基调：简约大气 / 活力橙主色 + 深炭灰 + 冷调中性灰（典型科技行业配色）
   ========================================================================== */

:root {
  --accent: #F0761B;      /* 主橙 */
  --accent-deep: #F0761B; /* 主橙·深（小字号文字用，对比更好） */
  --accent-soft: #FFF1E3; /* 主橙·浅底 */
  --navy: #0E1725;        /* 深炭蓝夜（深色板块底色） */
  --navy-2: #16233A;
  --ink: #121A24;         /* 正文深色 */
  --blue: #1F5FA8;        /* 辅助蓝（克制使用） */
  --blue-deep: #17497F;
  --bg: #FFFFFF;
  --bg-soft: #F5F6F8;
  --line: #E6E9EE;
  --muted: #5C6675;
  --white: #FFFFFF;

  --radius: 18px;
  --radius-lg: 28px;
  --shadow-soft: 0 18px 50px -22px rgba(14, 23, 37, 0.22);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea { font: inherit; color: inherit; }

::selection { background: var(--accent-soft); color: var(--accent-deep); }

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

.container {
  width: min(1240px, 100% - 48px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 10px 18px;
  z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ------------------------------ Buttons ------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
              color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 30px -14px rgba(240, 118, 27, 0.75);
}
.btn-primary:hover { background: var(--accent-deep); transform: translateY(-2px); }

.btn-light {
  background: #fff;
  color: var(--navy);
}
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -16px rgba(0,0,0,0.45); }

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

.btn-block { width: 100%; }

/* ------------------------------ Header ------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 18px 0;
  transition: background 0.35s var(--ease), padding 0.35s var(--ease),
              box-shadow 0.35s var(--ease);
}
.site-header.is-scrolled {
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: inset 0 -1px 0 var(--line);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 46px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { width: 34px; height: 34px; flex: none; }
.mark-bg { fill: var(--accent); }
.mark-sail { fill: #FFFFFF; }
.brand-logo{ width: 32px; height: 32px;margin:1px;background:var(--accent);border-radius:6px;flex:none;}
.brand-logo img{width: 26px; height: 26px;margin:3px;}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-cn { font-size: 18px; font-weight: 600; letter-spacing: 0.06em; color: #fff; }
.brand-en { font-size: 10px; letter-spacing: 0.22em; color: rgba(255,255,255,0.62); }
.site-header.is-scrolled .brand-cn { color: var(--ink); }
.site-header.is-scrolled .brand-en { color: var(--muted); }

/* 主导航绝对居中；汉堡按钮（移动端）也纳入同一套定位 */
.site-nav {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  white-space: nowrap;
}

.nav-link {
  position: relative;
  font-size: 15px;
  color: rgba(255,255,255,0.82);
  padding: 4px 0;
  transition: color 0.25s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover, .nav-link.is-active { color: #fff; }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }

.site-header.is-scrolled .nav-link { color: var(--muted); }
.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.is-active { color: var(--ink); }

.nav-cta { padding: 10px 24px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: border-color 0.25s var(--ease);
}
.nav-toggle span {
  display: block;
  width: 18px; height: 1.8px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), background 0.25s var(--ease);
}
.site-header.is-scrolled .nav-toggle { border-color: var(--line); }
.site-header.is-scrolled .nav-toggle span { background: var(--ink); }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(3.9px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { transform: translateY(-3.9px) rotate(-45deg); }

/* ------------------------------ Hero ------------------------------ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
  color: #fff;
  isolation: isolate;
}

.hero-media { position: absolute; inset: 0; z-index: -1; }
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 72% center;
  animation: heroZoom 18s var(--ease) forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.08); }
  to   { transform: scale(1); }
}
.hero-veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(760px 520px at 88% 18%, rgba(240, 118, 27, 0.24), transparent 62%),
    linear-gradient(100deg, rgba(9, 14, 22, 0.92) 0%, rgba(9, 14, 22, 0.68) 44%, rgba(9, 14, 22, 0.12) 78%),
    linear-gradient(to top, rgba(9, 14, 22, 0.78), transparent 42%);
}

.hero-inner { padding: 140px 0 120px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.28em;
  color: rgba(255,255,255,0.72);
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.28);
  margin-bottom: 30px;
}
.hero-eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.hero-title {
  font-size: clamp(2.7rem, 7.2vw, 5.2rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0.045em;
  margin-bottom: 26px;
}
.hero-dot {
  margin: 0 0.16em;
  color: var(--accent);
}

.hero-sub {
  max-width: 34em;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 58px; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-tags li {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.86);
  padding: 7px 18px;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.hero-tags li:hover {
  background: rgba(240, 118, 27, 0.24);
  border-color: rgba(240, 118, 27, 0.7);
  color: #fff;
}

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  width: 22px; height: 44px;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 999px;
  display: flex;
  justify-content: center;
}
.hero-scroll-line {
  width: 2px; height: 10px;
  margin-top: 8px;
  border-radius: 2px;
  background: var(--accent);
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ------------------------------ Stats ------------------------------ */
.stats {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 56px 0;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: clamp(2.2rem, 3.6vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat-num em {
  font-style: normal;
  color: var(--accent);
  font-size: 0.62em;
  margin-left: 2px;
}
.stat-label {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ------------------------------ Section base ------------------------------ */
.section { padding: 110px 0; }

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--accent-deep);
  font-weight: 600;
  margin-bottom: 18px;
}
.section-label span {
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--muted);
  font-size: 12px;
}
.section-label::before {
  content: "";
  width: 30px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-label-light { color: #F7AE73; }
.section-label-light span { color: rgba(255,255,255,0.55); }

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.02em;
}
.section-desc {
  max-width: 44em;
  color: var(--muted);
  margin-top: 18px;
}

.section-head { max-width: 720px; }

/* ------------------------------ About ------------------------------ */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  margin-top: 56px;
}

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 18px;
}
.about-copy > p:not(.lead) { color: var(--muted); }

.about-points {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}
.about-points li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  font-size: 15px;
  color: var(--muted);
}
.about-points span {
  flex: none;
  font-weight: 600;
  color: var(--accent-deep);
  letter-spacing: 0.04em;
}

.about-figure {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.about-figure img { width: 100%; height: 100%; object-fit: cover; }

.values {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 72px;
  border-top: 1px solid var(--line);
}
.value {
  padding: 30px 20px 0 0;
  border-right: 1px solid var(--line);
  margin-right: 20px;
}
.value:last-child { border-right: 0; margin-right: 0; }
.value h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}
.value h3::before {
  content: "";
  display: block;
  width: 22px; height: 2.5px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 14px;
}
.value p { font-size: 14px; color: var(--muted); }

/* ------------------------------ Services ------------------------------ */
.services { background: var(--bg-soft); }

.service-list { margin-top: 56px; }

.service {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: clamp(18px, 3vw, 44px);
  padding: 34px 22px;
  border-top: 1px solid var(--line);
  transition: background 0.35s var(--ease), padding 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.service:last-child { border-bottom: 1px solid var(--line); }
.service:hover {
  background: #fff;
  padding-left: 34px;
  box-shadow: inset 3px 0 0 var(--accent);
}

.service-no {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px #BAC2CE;
  font-variant-numeric: tabular-nums;
  transition: color 0.35s var(--ease), -webkit-text-stroke-color 0.35s var(--ease);
}
.service:hover .service-no {
  color: var(--accent);
  -webkit-text-stroke-color: var(--accent);
}

.service-body h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.service-slogan {
  margin-top: 4px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
}
.service-desc {
  margin-top: 10px;
  max-width: 50em;
  font-size: 15px;
  color: var(--muted);
}

.service-arrow {
  flex: none;
  width: 46px; height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: all 0.35s var(--ease);
}
.service-arrow svg { width: 20px; height: 20px; }
.service:hover .service-arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateX(4px);
}

/* ------------------------------ 认知体系：云 · 数 · 智 ------------------------------ */
.creed {
  background: var(--bg);
  padding: 110px 0;
  position: relative;
  overflow: hidden;
}
.creed::before {
  content: "";
  position: absolute;
  top: -140px; right: -120px;
  width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240,118,27,0.07), transparent 68%);
  pointer-events: none;
}

/* 顶部立论 */
.creed-thesis {
  position: relative;
  max-width: 800px;
  margin: 0 0 60px;
}
.creed-thesis .section-title { margin-bottom: 20px; }
.creed-thesis-lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 14px;
}
.creed-thesis-sub {
  color: var(--muted);
  max-width: 46em;
}

/* 三观主轴：云 → 数 → 智，同一横向链条 */
.creed-trio {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.creed-item {
  position: relative;
  padding: 34px 28px 30px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.creed-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
/* 每观自己的强调色：云=橙 / 数=蓝 / 智=紫 */
.creed-item.is-cloud { border-top: 3px solid var(--accent); }
.creed-item.is-data  { border-top: 3px solid #378ADD; }
.creed-item.is-ai    { border-top: 3px solid #7F77DD; }

/* 大字标识 */
.creed-char {
  display: block;
  font-size: 46px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.is-cloud .creed-char { color: var(--accent); }
.is-data  .creed-char { color: #185FA5; }
.is-ai    .creed-char { color: #534AB7; }

.creed-role {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.creed-item h3 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.creed-key {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}
.is-cloud .creed-key { color: var(--accent-deep); }
.is-data  .creed-key { color: #185FA5; }
.is-ai    .creed-key { color: #534AB7; }

.creed-item > p.creed-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.72;
}
/* 观内要点列表 */
.creed-list {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 8px;
}
.creed-list li {
  font-size: 13px;
  color: var(--muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}
.creed-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--line);
}
.is-cloud .creed-list li::before { background: rgba(240,118,27,0.55); }
.is-data  .creed-list li::before { background: rgba(55,138,221,0.55); }
.is-ai    .creed-list li::before { background: rgba(127,119,221,0.55); }

/* 链式关系说明条 */
.creed-chain {
  position: relative;
  margin-top: 26px;
  padding: 20px 26px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  line-height: 1.7;
}
.creed-chain b { color: var(--ink); font-weight: 600; }

/* 收束：回到品牌主张 */
.creed-creed {
  position: relative;
  margin-top: 26px;
  padding: 32px 34px;
  background: linear-gradient(135deg, rgba(240,118,27,0.06), rgba(31,95,168,0.05));
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
}
.creed-creed b {
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.creed-creed span { color: var(--muted); font-size: 14.5px; }

/* ------------------------------ Platform ------------------------------ */
.platform {
  background:
    radial-gradient(1100px 620px at 82% -12%, rgba(240, 118, 27, 0.30), transparent 62%),
    radial-gradient(700px 480px at 6% 112%, rgba(31, 95, 168, 0.26), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 60%, #0B1220 100%);
  color: #fff;
  padding: 110px 0;
  overflow: hidden;
}

.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: center;
}

.platform-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 70px -30px rgba(0,0,0,0.7);
}
.platform-figure img { width: 100%; height: 100%; object-fit: cover; }

.platform-desc {
  margin-top: 20px;
  color: rgba(255,255,255,0.72);
  max-width: 30em;
}

/* ------------------------------ Platform layers ------------------------------ */
.platform-layers {
  display: grid;
  gap: 10px;
  margin-top: 34px;
}

.platform-layer {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
              transform 0.35s var(--ease);
}
.platform-layer:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(240, 118, 27, 0.55);
  transform: translateX(3px);
}

.pl-no {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 1px;
}

.pl-body b {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #fff;
}
.pl-body span {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.62);
}

.platform-feats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px 34px;
  margin-top: 40px;
}
.feat h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.feat h3::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--accent);
  transform: rotate(45deg);
  flex: none;
}
.feat p { font-size: 14px; color: rgba(255,255,255,0.62); }

/* ------------------------------ Scenarios（智能应用场景） ------------------------------ */
.scenarios {
  padding: 110px 0 64px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 46px;
}

.scenario {
  position: relative;
  padding: 26px 24px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
              border-color 0.35s var(--ease);
}
.scenario::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
}
.scenario:hover {
  transform: translateY(-2px);
  border-color: #DDE2EA;
  box-shadow: var(--shadow-soft);
}

.scenario-idx {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-deep);
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}

/* 场景卡片头部：编号 + 使用者 */
.scenario-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.scenario-head .scenario-idx { margin-bottom: 0; }
.scenario-who {
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 11px;
  white-space: nowrap;
}

.scenario h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}
.scenario h3::before { content: none; }

.scenario > p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* 场景背景说明 */
.scenario-context {
  margin-bottom: 16px;
}

/* 场景前后对比：原来 → 现在 */
.scenario-flow {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}
.sf-row {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
}
.sf-row p {
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
  color: var(--muted);
}
.sf-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 2px 0;
  border-radius: 6px;
  align-self: start;
}
.sf-before {
  background: var(--bg-soft);
}
.sf-before .sf-tag {
  color: var(--muted);
  background: #EAEDF1;
}
.sf-before p { color: #8A93A1; }
.sf-after {
  background: var(--accent-soft);
  border-color: #F6D9BC;
}
.sf-after .sf-tag {
  color: #fff;
  background: var(--accent);
}
.sf-after p { color: #7A4A18; }
.sf-after p strong { color: #5C340C; }

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.scenario-tags span {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px 11px;
}

.scenarios-note {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-align: center;
}

/* 场景板块内的行业跑马灯 */
.industries-inline {
  margin-top: 64px;
  padding-top: 44px;
  border-top: 1px solid var(--line);
}

/* ------------------------------ Industries marquee ------------------------------ */
.industries {
  padding: 64px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.industries-label {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin-bottom: 26px;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  flex: none;
  margin-right: 14px;
  padding: 12px 30px;
  font-size: 16px;
  letter-spacing: 0.14em;
  color: var(--ink);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.marquee-track span:hover { background: var(--accent); color: #fff; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ------------------------------ Contact ------------------------------ */
.contact { background: var(--bg-soft); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: start;
}

.contact-desc { margin-top: 20px; color: var(--muted); max-width: 30em; }

.contact-info {
  margin-top: 42px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.contact-info li {
  display: grid;
  gap: 2px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.ci-label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.ci-value {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
}
.ci-value[href] { transition: color 0.25s var(--ease); }
.ci-value[href]:hover { color: var(--accent); }

.contact-form {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 18px;
}

.field { display: grid; gap: 7px; }
.field label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.field label span { color: var(--accent); margin-left: 3px; }
.field input, .field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-soft);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(240, 118, 27, 0.16);
}
.field.has-error input, .field.has-error textarea { border-color: #C24A3F; background: #FDF6F5; }
.field-error {
  min-height: 0;
  font-size: 12.5px;
  color: #C24A3F;
  line-height: 1.4;
}
.field-error:empty { display: none; }

.form-note {
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
}

.form-success {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(440px 280px at 50% 0%, rgba(240, 118, 27, 0.11), transparent 72%),
    rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 6px;
  text-align: center;
  padding: 26px 22px;
  animation: successIn 0.5s var(--ease);
}
.form-success strong {
  font-size: 19px;
  letter-spacing: 0.04em;
}
.form-success > span {
  font-size: 14px;
  color: var(--muted);
}

/* 抽象业务图形：柱体生长 + 增长折线绘制 + 末端节点脉冲 */
.success-art { margin-bottom: 12px; }
.success-art svg { display: block; width: min(260px, 62vw); height: auto; overflow: visible; }

.art-bar {
  transform-box: fill-box;
  transform-origin: bottom;
  transform: scaleY(0);
  animation: growBar 0.7s var(--ease) forwards;
}
.art-bar:nth-child(1) { animation-delay: 0.05s; }
.art-bar:nth-child(2) { animation-delay: 0.15s; }
.art-bar:nth-child(3) { animation-delay: 0.25s; }
.art-bar:nth-child(4) { animation-delay: 0.35s; }
@keyframes growBar {
  to { transform: scaleY(1); }
}

.art-line {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: drawLine 1.05s var(--ease) 0.4s forwards;
}
@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

.art-node {
  transform-box: fill-box;
  transform-origin: center;
  opacity: 0;
  animation: nodeIn 0.5s var(--ease) forwards;
}
.art-nodes .art-node:nth-child(1) { animation-delay: 0.5s; }
.art-nodes .art-node:nth-child(2) { animation-delay: 0.66s; }
.art-nodes .art-node:nth-child(3) { animation-delay: 0.82s; }
.art-nodes .art-node:nth-child(4) { animation-delay: 1s; }
@keyframes nodeIn {
  0%   { opacity: 0; transform: scale(0.2); }
  65%  { opacity: 1; transform: scale(1.3); }
  100% { opacity: 1; transform: scale(1); }
}

.art-ripple {
  transform-box: fill-box;
  transform-origin: center;
  animation: nodeRipple 2.6s ease-out 1.2s infinite;
}
@keyframes nodeRipple {
  0%   { transform: scale(0.9); opacity: 0.85; }
  70%  { transform: scale(3.2); opacity: 0; }
  100% { transform: scale(3.2); opacity: 0; }
}
@keyframes successIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

/* ------------------------------ Footer ------------------------------ */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.66);
  padding: 66px 0 0;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 48px;
}
.brand-light .brand-cn { color: #fff; }
.brand-light .brand-en { color: rgba(255,255,255,0.5); }

.footer-slogan {
  margin-top: 20px;
  font-size: 15px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.85);
}
.footer-desc {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.05em;
}
.footer-contact { transition: color 0.25s var(--ease); }
.footer-contact:hover { color: var(--accent); }
.footer-sep { margin: 0 9px; opacity: 0.45; }

.footer-nav {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: color 0.25s var(--ease);
}
.footer-nav a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}
.footer-icp { display: flex; flex-wrap: wrap; align-items: center; }
.footer-icp a { transition: color 0.25s var(--ease); }
.footer-icp a:hover { color: var(--accent); }

/* ------------------------------ Reveal motion ------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ------------------------------ Responsive ------------------------------ */
@media (max-width: 1024px) {
  .section { padding: 84px 0; }
  .about-grid, .contact-grid, .platform-grid { grid-template-columns: 1fr; }
  .about-figure { max-width: 560px; }
  .values { grid-template-columns: repeat(3, 1fr); gap: 30px 24px; }
  .value { padding-right: 0; margin-right: 0; }
  .value:nth-child(3n) { border-right: 0; }
  .platform-figure { order: -1; max-height: 420px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; padding: 44px 0; }
  .scenarios { padding: 84px 0 56px; }
  .scenario-grid { gap: 16px; }
  .industries-inline { margin-top: 52px; padding-top: 36px; }

  .creed { padding: 84px 0; }
  .creed-thesis { margin-bottom: 46px; }
  .creed-trio { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 768px) {
  .container { width: min(1240px, 100% - 40px); }

  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    left: auto;
    top: 0; right: 0;
    transform: none;
    height: 100dvh;
    width: min(320px, 84vw);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 30px;
    padding: 90px 42px 40px;
    background: rgba(14, 23, 37, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    z-index: 90;
  }
  .site-nav.is-open { transform: translateX(0); }
  .nav-link { font-size: 19px; color: rgba(255,255,255,0.85); }
  .nav-link:hover, .nav-link.is-active { color: #fff; }
  .nav-cta { margin-top: 10px; }

  .hero-inner { padding: 130px 0 110px; }
  .hero-media img { object-position: 62% center; }

  .service { grid-template-columns: 1fr; gap: 12px; padding: 28px 4px; }
  .service:hover { padding-left: 4px; }
  .service-no { font-size: 1.4rem; }
  .service-arrow { display: none; }

  .values { grid-template-columns: 1fr; }
  .value { border-right: 0; margin-right: 0; padding-right: 0; border-bottom: 1px solid var(--line); padding-bottom: 26px; }
  .value:last-child { border-bottom: 0; }

  .platform-feats { grid-template-columns: 1fr; }
  .platform-layers { margin-top: 26px; }
  .platform-layer { padding: 13px 15px; gap: 12px; }
  .creed { padding: 72px 0; }
  .creed-item { padding: 26px 22px 24px; }
  .creed-char { font-size: 38px; }
  .creed-chain { padding: 18px 20px; text-align: left; }
  .creed-creed { margin-top: 20px; padding: 26px 22px; flex-direction: column; gap: 6px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario { padding: 22px 20px 18px; }
  .sf-row { grid-template-columns: 40px 1fr; gap: 8px; padding: 9px 10px; }
  .sf-row p { font-size: 12.5px; }
  .scenarios { padding: 76px 0 52px; }
  .scenarios-note { text-align: left; }
  .contact-form { padding: 28px 22px; }
  .footer-grid { flex-direction: column; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ------------------------------ Reduced motion ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; flex-wrap: wrap; width: 100%; }
  .art-ripple { display: none; }
}