/* ============================================================
   璇宫（南京）信息技术有限公司 — 官网样式
   设计基调：简约 · 大气 · 科技感（深墨蓝 + 电光蓝）
   ============================================================ */

:root {
  --ink: #0a1626;
  --ink-2: #12243a;
  --ink-3: #1c3352;
  --brand: #1668e3;
  --brand-dark: #0f4fb4;
  --brand-soft: #eaf2ff;
  --accent: #29c1c9;
  --text: #16202e;
  --muted: #5d6c80;
  --muted-2: #8494a7;
  --line: #e5eaf1;
  --line-dark: rgba(255, 255, 255, .12);
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --bg-soft-2: #eef2f8;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(16, 32, 56, .05), 0 4px 16px rgba(16, 32, 56, .05);
  --shadow: 0 6px 20px rgba(16, 32, 56, .08), 0 20px 50px -20px rgba(16, 32, 56, .18);
  --shadow-dark: 0 20px 60px -20px rgba(0, 0, 0, .55);
  --max: 1200px;
  --nav-h: 74px;
  --ease: cubic-bezier(.22, .68, .32, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.25; letter-spacing: -.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

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

/* ---------------- Header ---------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease);
}
.nav.is-stuck { border-bottom-color: var(--line); box-shadow: 0 4px 24px rgba(16, 32, 56, .04); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark {
  width: 38px; height: 38px; flex: none;
  border-radius: 11px;
  background: linear-gradient(140deg, var(--brand) 0%, #0b3d93 55%, #071f47 100%);
  display: grid; place-items: center;
  box-shadow: 0 6px 18px -4px rgba(22, 104, 227, .5);
}
.brand__mark svg { width: 21px; height: 21px; }
.brand__mark--img {
  background: none; border-radius: 50%;
  box-shadow: 0 4px 14px -4px rgba(214, 62, 24, .5);
}
.brand__mark--img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-size: 16.5px; font-weight: 700; letter-spacing: .01em; }
.brand__en { font-size: 10.5px; color: var(--muted-2); letter-spacing: .16em; text-transform: uppercase; }

.nav__menu { display: flex; align-items: center; gap: 14px; }
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative; padding: 9px 16px; border-radius: 9px;
  font-size: 15px; color: var(--muted); font-weight: 500;
  transition: color .22s var(--ease), background .22s var(--ease);
}
.nav__link:hover { color: var(--ink); background: var(--bg-soft); }
.nav__link.is-active { color: var(--brand); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--brand);
}
.nav__cta { margin-left: 10px; }

.nav__toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 11px; cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav__toggle span {
  display: block; width: 18px; height: 1.6px; background: var(--ink);
  border-radius: 2px; position: relative; transition: .25s var(--ease);
}
.nav__toggle span::before, .nav__toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.6px;
  background: var(--ink); border-radius: 2px; transition: .25s var(--ease);
}
.nav__toggle span::before { top: -6px; }
.nav__toggle span::after { top: 6px; }
.nav.is-open .nav__toggle span { background: transparent; }
.nav.is-open .nav__toggle span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .nav__toggle span::after { top: 0; transform: rotate(-45deg); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 46px; padding: 0 24px; border-radius: 11px;
  font-size: 15px; font-weight: 600; border: 1px solid transparent;
  cursor: pointer; transition: all .25s var(--ease); white-space: nowrap;
  font-family: inherit;
}
.btn svg { width: 16px; height: 16px; transition: transform .25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn--primary { background: var(--brand); color: #fff; box-shadow: 0 8px 22px -8px rgba(22, 104, 227, .65); }
.btn--primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 14px 30px -10px rgba(22, 104, 227, .7); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-2); transform: translateY(-2px); }
.btn--ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .32); }
.btn--outline-light:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .6); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; border-radius: 10px; }
.btn--block { width: 100%; }

/* ---------------- Section primitives ---------------- */
.section { padding: 104px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: .14em;
  color: var(--brand); text-transform: uppercase; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 26px; height: 1.5px; background: var(--brand); border-radius: 2px; }
.eyebrow--light { color: var(--accent); }
.eyebrow--light::before { background: var(--accent); }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); letter-spacing: -.02em; }
.section-head p { margin-top: 18px; color: var(--muted); font-size: 16.5px; }
.section-head--light h2, .section-head--light p { color: #fff; }
.section-head--light p { color: rgba(255, 255, 255, .68); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  padding: calc(var(--nav-h) + 92px) 0 108px;
  background: radial-gradient(1200px 600px at 78% -10%, #1d4d9e 0%, transparent 60%),
              radial-gradient(900px 500px at 10% 110%, #0d3f7a 0%, transparent 60%),
              linear-gradient(160deg, #071427 0%, #0a1c33 45%, #0d2544 100%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(1000px 620px at 70% 20%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(1000px 620px at 70% 20%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; width: 720px; height: 720px; right: -180px; top: -240px;
  background: radial-gradient(circle, rgba(41, 193, 201, .18) 0%, transparent 62%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: center; }

.hero__tag {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 15px 7px 11px; border-radius: 999px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px; color: rgba(255, 255, 255, .86); margin-bottom: 26px;
}
.hero__tag i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(41, 193, 201, .22); }

.hero h1 {
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.16; letter-spacing: -.03em; font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, #6fb3ff 0%, #29c1c9 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { margin-top: 24px; font-size: 17.5px; color: rgba(255, 255, 255, .74); max-width: 560px; }
.hero__actions { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }

.hero__stats {
  margin-top: 56px; display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(255, 255, 255, .13);
  border: 1px solid rgba(255, 255, 255, .13); border-radius: var(--radius);
  overflow: hidden; max-width: 620px;
}
.hero__stat { padding: 20px 18px; background: rgba(9, 24, 44, .55); }
.hero__stat b { display: block; font-size: 26px; font-weight: 700; letter-spacing: -.02em; }
.hero__stat b span { font-size: 14px; font-weight: 500; opacity: .7; margin-left: 2px; }
.hero__stat small { display: block; font-size: 12.5px; color: rgba(255, 255, 255, .55); margin-top: 4px; }

/* hero visual */
.hero__visual { position: relative; }
.orbit {
  position: relative; aspect-ratio: 1 / 1; max-width: 460px; margin-left: auto;
}
.orbit__ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .12);
}
.orbit__ring:nth-child(2) { inset: 12%; border-color: rgba(255, 255, 255, .09); }
.orbit__ring:nth-child(3) { inset: 26%; border-color: rgba(41, 193, 201, .2); }
.orbit__ring--dash { border-style: dashed; animation: spin 48s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.orbit__core {
  position: absolute; inset: 34%;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #2a6fd6 0%, #123a72 50%, #071a33 100%);
  display: grid; place-items: center;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .14), 0 30px 80px -20px rgba(0, 0, 0, .8);
}
.orbit__core svg { width: 46%; opacity: .92; }

.orbit__node {
  position: absolute; width: 40px; height: 40px; border-radius: 12px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .18);
  backdrop-filter: blur(8px);
  display: grid; place-items: center;
  animation: float 6s ease-in-out infinite;
}
.orbit__node svg { width: 19px; height: 19px; color: var(--accent); }
.orbit__node:nth-child(5) { top: 4%; left: 44%; animation-delay: 0s; }
.orbit__node:nth-child(6) { top: 56%; right: -2%; animation-delay: -1.5s; }
.orbit__node:nth-child(7) { bottom: 6%; left: 30%; animation-delay: -3s; }
.orbit__node:nth-child(8) { top: 32%; left: -3%; animation-delay: -4.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ---------------- Marquee / logos ---------------- */
.logos { padding: 46px 0; border-bottom: 1px solid var(--line); background: #fff; }
.logos__inner { display: flex; align-items: center; gap: 44px; flex-wrap: wrap; justify-content: space-between; }
.logos__label { font-size: 13px; color: var(--muted-2); letter-spacing: .1em; text-transform: uppercase; font-weight: 600; }
.logos__list { display: flex; align-items: center; gap: 38px; flex-wrap: wrap; }
.logos__item {
  font-size: 16px; font-weight: 700; color: #b8c3d1; letter-spacing: .02em;
  transition: color .25s var(--ease); white-space: nowrap;
}
.logos__item:hover { color: var(--ink); }
.logos__item small { display: block; font-size: 10.5px; font-weight: 500; letter-spacing: .14em; color: inherit; opacity: .75; }

/* ---------------- Cards ---------------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative; padding: 34px; border-radius: var(--radius-lg);
  background: #fff; border: 1px solid var(--line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
  overflow: hidden;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d5dfec; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand); margin-bottom: 22px;
  transition: background .3s var(--ease), color .3s var(--ease);
}
.card__icon svg { width: 25px; height: 25px; }
.card:hover .card__icon { background: var(--brand); color: #fff; }
.card h3 { font-size: 19.5px; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 15px; }
.card__more {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 20px;
  font-size: 14.5px; font-weight: 600; color: var(--brand);
}
.card__more svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.card:hover .card__more svg { transform: translateX(4px); }

.card--num { padding-top: 30px; }
.card__num {
  font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .12em;
  margin-bottom: 16px; display: block;
}

/* dark cards */
.card--dark {
  background: linear-gradient(165deg, rgba(255, 255, 255, .07) 0%, rgba(255, 255, 255, .03) 100%);
  border-color: rgba(255, 255, 255, .12); color: #fff;
}
.card--dark:hover { border-color: rgba(41, 193, 201, .45); box-shadow: var(--shadow-dark); }
.card--dark p { color: rgba(255, 255, 255, .66); }
.card--dark .card__icon { background: rgba(41, 193, 201, .14); color: var(--accent); }

/* feature list */
.checks { margin-top: 20px; display: grid; gap: 11px; }
.checks li { display: flex; gap: 11px; align-items: flex-start; font-size: 14.8px; color: var(--muted); }
.checks li svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--brand); }
.card--dark .checks li { color: rgba(255, 255, 255, .72); }
.card--dark .checks li svg { color: var(--accent); }

/* ---------------- Dark section ---------------- */
.section--dark {
  background: linear-gradient(160deg, #071427 0%, #0c2138 60%, #0a1c30 100%);
  color: #fff; position: relative; overflow: hidden;
}
.section--dark::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: radial-gradient(900px 500px at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 500px at 50% 0%, #000 0%, transparent 75%);
  pointer-events: none;
}
.section--dark > .container { position: relative; z-index: 2; }

/* ---------------- Product tabs ---------------- */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
.tab {
  padding: 10px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; font-size: 14.5px; font-weight: 600; color: var(--muted);
  cursor: pointer; transition: all .25s var(--ease); font-family: inherit;
}
.tab:hover { border-color: #c8d4e4; color: var(--ink); }
.tab.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.panel { display: none; }
.panel.is-active { display: block; animation: fadeUp .45s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------------- Product showcase rows ---------------- */
.showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.showcase__card {
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  background: #fff; display: flex; flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.showcase__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.showcase__thumb {
  aspect-ratio: 16 / 9; position: relative; overflow: hidden;
  background: linear-gradient(140deg, #eef3fa 0%, #dfe9f6 100%);
  display: grid; place-items: center;
}
.showcase__thumb svg { width: 42%; max-width: 190px; color: #9fb6d4; }
.showcase__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .65s var(--ease); }
.showcase__card:hover .showcase__thumb img { transform: scale(1.05); }

/* 卡片顶部配图 */
.card__media {
  position: relative; margin: -34px -34px 26px;
  aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft-2);
}
.card__media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .65s var(--ease); }
.card:hover .card__media img { transform: scale(1.05); }
.card__media--wide { aspect-ratio: 16 / 9; }
.showcase__thumb--a { background: linear-gradient(140deg, #e9f1fd 0%, #d6e6fa 100%); }
.showcase__thumb--b { background: linear-gradient(140deg, #e6f7f8 0%, #d2eef0 100%); }
.showcase__thumb--c { background: linear-gradient(140deg, #eef0fb 0%, #dde1f6 100%); }
.showcase__thumb--d { background: linear-gradient(140deg, #f3f1fb 0%, #e4e0f6 100%); }
.showcase__body { padding: 28px 30px 30px; display: flex; flex-direction: column; flex: 1; }
.showcase__body h3 { font-size: 20px; margin-bottom: 6px; }
.showcase__meta { font-size: 13px; color: var(--brand); font-weight: 600; letter-spacing: .04em; margin-bottom: 14px; }
.showcase__body p { color: var(--muted); font-size: 15px; }
.specs { margin-top: 20px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.specs div { background: #fff; padding: 13px 15px; }
.specs dt { font-size: 12px; color: var(--muted-2); margin-bottom: 2px; }
.specs dd { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tag {
  padding: 5px 12px; border-radius: 8px; background: var(--bg-soft);
  font-size: 12.5px; color: var(--muted); font-weight: 500;
}

/* ---------------- Steps ---------------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.step { position: relative; }
.step__dot {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: var(--ink); color: #fff; font-weight: 700; font-size: 16px; margin-bottom: 18px;
}
.step h4 { font-size: 16.5px; margin-bottom: 8px; }
.step p { font-size: 14.2px; color: var(--muted); }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 22px; left: 58px; right: -8px; height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 12px);
}

/* ---------------- Timeline ---------------- */
.timeline { position: relative; padding-left: 34px; max-width: 780px; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 1.5px;
  background: linear-gradient(180deg, var(--brand) 0%, var(--line) 92%);
}
.tl { position: relative; padding-bottom: 38px; }
.tl:last-child { padding-bottom: 0; }
.tl::before {
  content: ""; position: absolute; left: -34px; top: 8px; width: 13px; height: 13px;
  border-radius: 50%; background: #fff; border: 3px solid var(--brand);
}
.tl__year { font-size: 14px; font-weight: 700; color: var(--brand); letter-spacing: .06em; }
.tl h4 { font-size: 18px; margin: 6px 0 8px; }
.tl p { color: var(--muted); font-size: 15px; }

/* ---------------- Stats band ---------------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.stat { background: #fff; padding: 34px 28px; }
.stat b { display: block; font-size: 34px; font-weight: 700; letter-spacing: -.03em; color: var(--ink); }
.stat b span { font-size: 16px; font-weight: 500; color: var(--muted); margin-left: 3px; }
.stat small { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); }

/* ---------------- Info table ---------------- */
.info-table { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.info-table div { display: grid; grid-template-columns: 200px 1fr; gap: 20px; padding: 17px 26px; background: #fff; border-bottom: 1px solid var(--line); }
.info-table div:last-child { border-bottom: 0; }
.info-table dt { font-size: 14.5px; color: var(--muted); }
.info-table dd { margin: 0; font-size: 15px; font-weight: 500; }

/* ---------------- Contact ---------------- */
.contact-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 56px; align-items: start; }
.contact-list { display: grid; gap: 18px; }
.contact-item {
  display: flex; gap: 18px; padding: 24px 26px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #fff; transition: all .3s var(--ease);
}
.contact-item:hover { border-color: #cdd9e8; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.contact-item__icon {
  width: 44px; height: 44px; flex: none; border-radius: 12px; background: var(--brand-soft);
  color: var(--brand); display: grid; place-items: center;
}
.contact-item__icon svg { width: 21px; height: 21px; }
.contact-item__label { font-size: 12.5px; color: var(--muted-2); letter-spacing: .06em; font-weight: 600; text-transform: uppercase; }
.contact-item__value { font-size: 16.5px; font-weight: 600; margin-top: 4px; word-break: break-all; }
.contact-item__note { font-size: 13.5px; color: var(--muted); margin-top: 5px; }

.form-card { padding: 40px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field label i { color: #d6455a; font-style: normal; margin-left: 3px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 15px; border: 1px solid var(--line); border-radius: 11px;
  font-size: 15px; font-family: inherit; color: var(--text); background: #fff;
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(22, 104, 227, .12);
}
.field textarea { resize: vertical; min-height: 116px; }
.field__err { display: none; font-size: 12.5px; color: #d6455a; margin-top: 6px; }
.field.has-error input, .field.has-error textarea, .field.has-error select { border-color: #d6455a; }
.field.has-error .field__err { display: block; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 16px; }
.btn[disabled] { opacity: .6; cursor: not-allowed; }
.form-success.is-error {
  display: block; background: #fdf1f3; border-color: #f2c4cc; color: #a3273b;
}
.form-success {
  display: none; margin-top: 18px; padding: 14px 18px; border-radius: 11px;
  background: #eaf8ef; border: 1px solid #bfe6cd; color: #1c7a45; font-size: 14.5px; font-weight: 500;
}
.form-success.is-show { display: block; }

/* ---------------- CTA ---------------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  padding: 64px 60px; color: #fff;
  background: radial-gradient(700px 300px at 88% 10%, #1d5fbe 0%, transparent 62%),
              linear-gradient(120deg, #0a1c33 0%, #123760 100%);
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; bottom: -140px; width: 380px; height: 380px;
  border-radius: 50%; background: radial-gradient(circle, rgba(41, 193, 201, .22), transparent 65%);
}
.cta-band__inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(26px, 3vw, 36px); letter-spacing: -.02em; }
.cta-band p { margin-top: 14px; color: rgba(255, 255, 255, .7); max-width: 520px; }

/* ---------------- Page hero (inner pages) ---------------- */
.page-hero {
  position: relative; overflow: hidden;
  padding: calc(var(--nav-h) + 76px) 0 76px;
  background: radial-gradient(900px 460px at 80% -20%, #1a4b96 0%, transparent 62%),
              linear-gradient(150deg, #071427 0%, #0b1f38 100%);
  color: #fff;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 66px 66px;
  mask-image: radial-gradient(800px 420px at 70% 10%, #000 0%, transparent 76%);
  -webkit-mask-image: radial-gradient(800px 420px at 70% 10%, #000 0%, transparent 76%);
  z-index: 1;
}
.page-hero__inner { position: relative; z-index: 3; max-width: 780px; }

/* 带实景图的内页头图 */
.page-hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.page-hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.page-hero--photo::after {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(100deg, rgba(6, 17, 34, .95) 0%, rgba(7, 22, 42, .82) 44%, rgba(10, 34, 62, .5) 100%);
}
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); letter-spacing: -.03em; }
.page-hero p { margin-top: 20px; font-size: 17px; color: rgba(255, 255, 255, .72); }
.breadcrumb { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: rgba(255, 255, 255, .55); margin-bottom: 20px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: .5; }

/* ---------------- Reveal ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------------- Footer ---------------- */
.footer { background: #061120; color: rgba(255, 255, 255, .62); padding: 72px 0 0; font-size: 14.5px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 46px; padding-bottom: 52px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer ul { display: grid; gap: 11px; }
.footer a:hover { color: #fff; }
.footer__brand .brand__name { color: #fff; font-size: 17px; }
.footer__brand p { margin-top: 18px; max-width: 320px; line-height: 1.8; }
.footer__contact { display: grid; gap: 13px; }
.footer__contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer__contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--accent); }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .09); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .45);
}

/* ---------------- Responsive ---------------- */
@media (max-width: 1040px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { order: -1; }
  .orbit { max-width: 340px; margin: 0 auto; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .step:not(:last-child)::after { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 14px 20px 22px; display: none; flex-direction: column; gap: 4px;
    box-shadow: 0 20px 40px -20px rgba(16, 32, 56, .25);
  }
  .nav.is-open .nav__menu { display: flex; }
  .nav__links { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav__link { padding: 12px 14px; font-size: 16px; }
  .nav__link.is-active::after { display: none; }
  .nav__cta { margin: 10px 0 0; }
  .nav__cta .btn { width: 100%; }
}

@media (max-width: 700px) {
  body { font-size: 15.5px; }
  .section { padding: 72px 0; }
  .container { padding: 0 20px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .showcase { grid-template-columns: 1fr; }
  .hero { padding: calc(var(--nav-h) + 56px) 0 76px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .info-table div { grid-template-columns: 1fr; gap: 4px; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 26px 22px; }
  .cta-band { padding: 44px 26px; }
  .footer__grid { grid-template-columns: 1fr; }
  .logos__inner { gap: 24px; }
  .logos__list { gap: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}