/* ============================================================
   SEPARATION / 常州赛璞睿生科技  —  Corporate Design System
   ============================================================ */

:root {
  --navy-900: #161616;
  --navy-800: #1e1e1e;
  --navy-700: #2e2e2e;
  --teal-700: #004c50;
  --teal-600: #006166;
  --teal-500: #00787c;
  --teal-400: #3fa9ab;
  --teal-100: #e6f1f1;
  --blue-500: #006166;
  --amber: #7fbfc0;

  --ink: #1e1e1e;
  --ink-2: #333333;
  --muted: #6b6b6b;
  --muted-2: #9a9a9a;
  --line: #e3e3e3;
  --line-2: #f0f0f0;
  --bg: #ffffff;
  --bg-soft: #f7f7f7;
  --bg-cool: #efefef;
  --white: #ffffff;

  --radius: 3px;
  --shadow-sm: 0 2px 12px rgba(30, 30, 30, .05);
  --shadow: 0 14px 44px rgba(30, 30, 30, .09);
  --shadow-lg: 0 24px 70px rgba(30, 30, 30, .16);
  --maxw: 1220px;
  --header-h: 76px;

  --font: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei",
    "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Arial, sans-serif;
  --mono: "DIN Alternate", "Bahnschrift", "Roboto Condensed", "Segoe UI",
    var(--font);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.3; letter-spacing: -.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.section { padding: 104px 0; }
.section--tight { padding: 76px 0; }
.section--soft { background: var(--bg-soft); }
.section--cool { background: var(--bg-cool); }
.section--dark { background: var(--navy-900); color: #fff; }

/* ---------- typography helpers ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--teal-600); margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--teal-500); }
.eyebrow--light { color: #6fc0c0; }
.eyebrow--light::before { background: #6fc0c0; }
.section-title { font-size: clamp(30px, 3.4vw, 42px); color: var(--ink); }
.section-title--light { color: #fff; }
.section-lead { color: var(--muted); font-size: 17px; line-height: 1.9; max-width: 720px; margin-top: 20px; }
.section-lead--light { color: #adadad; }
.section-head { margin-bottom: 54px; }
.section-head--split { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; }
.section-head--split .section-lead { margin-top: 0; max-width: 430px; }
.text-teal { color: var(--teal-600); }
.eng { font-family: var(--mono); letter-spacing: .16em; text-transform: uppercase; font-size: 12px; font-weight: 600; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 50px; padding: 0 26px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; letter-spacing: .01em;
  border: 1px solid transparent; cursor: pointer;
  transition: background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn--primary { background: var(--teal-600); color: #fff; }
.btn--primary:hover { background: var(--teal-700); box-shadow: 0 10px 26px rgba(0, 97, 102, .24); }
.btn--navy { background: var(--navy-800); color: #fff; }
.btn--navy:hover { background: var(--navy-700); }
.btn--outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn--outline:hover { border-color: var(--teal-600); color: var(--teal-600); }
.btn--ghost-light { border-color: rgba(255,255,255,.34); color: #fff; background: transparent; }
.btn--ghost-light:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn--sm { height: 42px; padding: 0 20px; font-size: 14px; }
.link-arrow {
  display: inline-flex; align-items: center; gap: 8px; color: var(--teal-600);
  font-weight: 600; font-size: 15px;
}
.link-arrow svg { width: 16px; height: 16px; transition: transform .22s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- top bar + header ---------- */
.topbar { background: var(--navy-900); color: #adadad; font-size: 12.5px; height: 38px; }
.topbar .container { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.topbar-left { display: flex; align-items: center; gap: 26px; }
.topbar-left span { display: inline-flex; align-items: center; gap: 7px; }
.topbar svg { width: 13px; height: 13px; opacity: .8; }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 20px; }
.topbar-sep { width: 1px; height: 13px; background: rgba(255,255,255,.2); }
.lang-switch { font-family: var(--mono); letter-spacing: .12em; font-size: 12px; color: #d8d8d8; }
.lang-switch.lang-current { color: #7fd4d4; cursor: default; }
.lang-switch:not(.lang-current):hover { color: #fff; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h); background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line-2);
  backdrop-filter: blur(12px); transition: box-shadow .25s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(30, 30, 30, .09); }
.site-header .container { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand img { width: 44px; height: 44px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-cn { font-size: 19px; font-weight: 700; letter-spacing: .08em; color: var(--navy-800); }
.brand-en { font-family: var(--mono); font-size: 9.5px; letter-spacing: .27em; color: var(--teal-600); margin-top: 5px; }

.main-nav { display: flex; align-items: center; gap: 34px; height: 100%; }
.main-nav > li { height: 100%; display: flex; align-items: center; position: relative; }
.main-nav > li > a {
  font-size: 15px; font-weight: 500; color: var(--ink-2); height: 100%;
  display: flex; align-items: center; transition: color .2s ease;
}
.main-nav > li > a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--teal-600); transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.main-nav > li > a:hover, .main-nav > li > a.active { color: var(--teal-600); }
.main-nav > li > a.active::after, .main-nav > li > a:hover::after { transform: scaleX(1); }
.header-cta { display: flex; align-items: center; gap: 14px; flex: none; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: var(--radius); cursor: pointer; padding: 0; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 19px; height: 1.5px; background: var(--ink); transition: transform .25s, opacity .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--navy-900); color: #fff; overflow: hidden; }
.hero::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: 56px 56px;
  mask-image: linear-gradient(120deg, rgba(0,0,0,.9), rgba(0,0,0,.15) 75%);
  -webkit-mask-image: linear-gradient(120deg, rgba(0,0,0,.9), rgba(0,0,0,.15) 75%);
}
.hero::after {
  content: ""; position: absolute; width: 900px; height: 900px; right: -220px; top: -330px;
  background: radial-gradient(circle, rgba(0,97,102,.20), rgba(0,97,102,0) 62%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); gap: 40px; align-items: center; min-height: 640px; padding: 76px 0 88px; }
.hero-kicker { display: inline-flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: #6fc0c0; border: 1px solid rgba(111,192,192,.32); padding: 8px 16px; border-radius: 2px; margin-bottom: 34px; }
.hero-kicker i { width: 6px; height: 6px; background: #6fc0c0; border-radius: 50%; box-shadow: 0 0 0 4px rgba(111,192,192,.14); }
.hero h1 { font-size: clamp(38px, 4.5vw, 60px); line-height: 1.22; letter-spacing: -.035em; font-weight: 700; }
.hero h1 em { font-style: normal; color: #4fb3b5; }
.hero-sub { margin-top: 26px; font-size: 17px; line-height: 1.95; color: #b5b5b5; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }
.hero-meta { margin-top: 56px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.13); display: flex; gap: 44px; flex-wrap: wrap; }
.hero-meta div { display: flex; flex-direction: column; gap: 2px; }
.hero-meta strong { font-family: var(--mono); font-size: 24px; font-weight: 700; color: #fff; letter-spacing: -.02em; }
.hero-meta span { font-size: 12.5px; color: #9a9a9a; letter-spacing: .04em; }
.hero-visual { position: relative; min-width: 0; display: flex; align-items: center; justify-content: center; }
.hero-visual svg { width: 100%; max-width: 560px; height: auto; filter: drop-shadow(0 30px 60px rgba(0,0,0,.35)); }

/* ---------- stat ribbon ---------- */
.stat-ribbon { background: var(--navy-800); color: #fff; border-top: 1px solid rgba(255,255,255,.08); }
.stat-ribbon .container { display: grid; grid-template-columns: repeat(5, 1fr); }
.stat-item { padding: 40px 24px; border-right: 1px solid rgba(255,255,255,.09); }
.stat-item:last-child { border-right: 0; }
.stat-item strong { display: block; font-family: var(--mono); font-size: clamp(30px, 3vw, 42px); line-height: 1; font-weight: 700; letter-spacing: -.04em; color: #fff; }
.stat-item strong i { font-style: normal; color: #4fb3b5; }
.stat-item span { display: block; margin-top: 12px; font-size: 13px; color: #a0a0a0; letter-spacing: .04em; }

/* ---------- generic cards / grids ---------- */
.grid { display: grid; gap: 24px; }
.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; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px 30px;
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.card::before { content: ""; position: absolute; left: -1px; top: -1px; width: 0; height: 2px; background: var(--teal-500); transition: width .32s ease; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #c9c9c9; }
.card:hover::before { width: calc(100% + 2px); }
.card-num { font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .14em; color: var(--teal-500); }
.card-icon { width: 48px; height: 48px; border: 1px solid var(--line); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 24px; color: var(--teal-600); }
.card-icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 20px; margin-bottom: 12px; color: var(--ink); }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.85; }
.card .link-arrow { margin-top: 22px; font-size: 14px; }

/* domain cards (home) */
.domain-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .3s ease, box-shadow .3s ease; }
.domain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.domain-card .thumb { height: 190px; overflow: hidden; position: relative; background: var(--navy-800); }
.domain-card .thumb img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.65) contrast(1.05); transition: transform .55s ease, filter .4s ease; }
.domain-card:hover .thumb img { transform: scale(1.06); filter: saturate(.95); }
.domain-card .thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,26,43,.05), rgba(7,26,43,.38)); }
.domain-card .thumb .tag { position: absolute; left: 18px; bottom: 16px; z-index: 2; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: #fff; text-transform: uppercase; }
.domain-card .body { padding: 26px 26px 30px; }
.domain-card .body h3 { font-size: 20px; margin-bottom: 10px; }
.domain-card .body p { font-size: 14px; color: var(--muted); line-height: 1.85; }
.domain-card .body .meta { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line-2); font-size: 12.5px; color: var(--teal-600); font-family: var(--mono); letter-spacing: .06em; }

/* ---------- feature / split layout ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.split--wide-left { grid-template-columns: 1.1fr .9fr; }
.figure { position: relative; }
.figure img { width: 100%; border-radius: var(--radius); }
.figure-caption { margin-top: 14px; font-size: 12.5px; color: var(--muted-2); font-family: var(--mono); letter-spacing: .04em; }
.figure-badge {
  position: absolute; right: -18px; bottom: 28px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow); padding: 18px 24px; border-radius: var(--radius);
}
.figure-badge strong { display: block; font-family: var(--mono); font-size: 28px; color: var(--teal-600); line-height: 1; }
.figure-badge span { display: block; font-size: 12px; color: var(--muted); margin-top: 8px; }

/* check list */
.check-list { margin-top: 28px; display: grid; gap: 16px; }
.check-list li { display: flex; gap: 13px; align-items: flex-start; font-size: 15px; color: var(--ink-2); }
.check-list svg { width: 18px; height: 18px; flex: none; margin-top: 5px; color: var(--teal-600); }

/* ---------- technology comparison ---------- */
.tech-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.compare-box { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.compare-box--hl { border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(0,97,102,.07); }
.compare-head { padding: 20px 26px; border-bottom: 1px solid var(--line-2); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.compare-head h4 { font-size: 17px; }
.compare-head span { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--muted); }
.compare-box--hl .compare-head { background: var(--teal-100); border-color: #d6e9e9; }
.compare-box--hl .compare-head h4 { color: var(--teal-700); }
.compare-body { padding: 26px; }
.compare-body svg { width: 100%; height: auto; }
.compare-foot { padding: 0 26px 26px; font-size: 14px; color: var(--muted); line-height: 1.8; }
.compare-foot b { color: var(--teal-600); font-weight: 700; }

/* spec table */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; background: #fff; border: 1px solid var(--line); }
.spec-table th, .spec-table td { padding: 17px 22px; text-align: left; border-bottom: 1px solid var(--line-2); }
.spec-table thead th { background: var(--navy-800); color: #fff; font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.spec-table tbody th { font-weight: 600; color: var(--ink-2); width: 28%; background: #fafafa; }
.spec-table tbody td { color: var(--muted); }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:hover td { color: var(--ink); }
.spec-table .hl { color: var(--teal-600); font-weight: 700; font-family: var(--mono); }

/* ---------- flow steps ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border: 1px solid var(--line); background: #fff; border-radius: var(--radius); overflow: hidden; }
.flow-step { padding: 32px 24px; border-right: 1px solid var(--line); position: relative; }
.flow-step:last-child { border-right: 0; }
.flow-step .idx { font-family: var(--mono); font-size: 12px; color: var(--teal-500); letter-spacing: .14em; }
.flow-step h4 { font-size: 16px; margin: 14px 0 10px; }
.flow-step p { font-size: 13px; color: var(--muted); line-height: 1.75; }
.flow-step::after { content: ""; position: absolute; right: -6px; top: 38px; width: 11px; height: 11px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); transform: rotate(45deg); background: #fff; z-index: 2; }
.flow-step:last-child::after { display: none; }

/* ---------- numbers / big quote ---------- */
.value-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.value-item { background: #fff; padding: 38px 32px; }
.value-item .eng { color: var(--teal-600); }
.value-item h3 { font-size: 24px; margin: 16px 0 12px; }
.value-item p { font-size: 14px; color: var(--muted); line-height: 1.85; }
.quote-block { border-left: 3px solid var(--teal-500); padding: 10px 0 10px 30px; margin-top: 34px; }
.quote-block p { font-size: 20px; line-height: 1.75; color: var(--ink); font-weight: 500; }
.quote-block span { display: block; margin-top: 14px; font-size: 13px; color: var(--muted); font-family: var(--mono); letter-spacing: .08em; }

/* ---------- solution detail ---------- */
.solution-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; margin-bottom: 28px; }
.solution-row:nth-child(even) .solution-row__media { order: 2; }
.solution-row__media { min-height: 330px; position: relative; overflow: hidden; background: var(--navy-800); }
.solution-row__media img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; filter: saturate(.6) contrast(1.06); transition: transform .6s ease; }
.solution-row:hover .solution-row__media img { transform: scale(1.05); }
.solution-row__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(7,26,43,.42), rgba(7,26,43,.05)); }
.solution-row__media .label { position: absolute; left: 30px; bottom: 28px; z-index: 2; color: #fff; font-family: var(--mono); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; }
.solution-row__content { padding: 44px 46px; display: flex; flex-direction: column; justify-content: center; }
.solution-row__content .num { font-family: var(--mono); font-size: 12px; color: var(--teal-600); letter-spacing: .16em; }
.solution-row__content h3 { font-size: 26px; margin: 14px 0 18px; }
.solution-row__content p { color: var(--muted); font-size: 15px; line-height: 1.9; }
.solution-row__content .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.solution-row__content .tags span { border: 1px solid var(--line); padding: 5px 12px; font-size: 12px; color: var(--muted); border-radius: 2px; }

/* ---------- timeline ---------- */
.timeline { border-left: 1px solid var(--line); margin-left: 8px; padding-left: 34px; }
.timeline li { position: relative; padding-bottom: 34px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -40px; top: 7px; width: 11px; height: 11px; border-radius: 50%; background: #fff; border: 2px solid var(--teal-500); }
.timeline .yr { font-family: var(--mono); font-size: 13px; color: var(--teal-600); letter-spacing: .1em; }
.timeline h4 { font-size: 17px; margin: 6px 0 8px; }
.timeline p { font-size: 14px; color: var(--muted); }

/* ---------- jobs ---------- */
.job-item { display: grid; grid-template-columns: 1.3fr 1fr 1fr auto; gap: 24px; align-items: center; padding: 26px 30px; border: 1px solid var(--line); border-bottom: 0; background: #fff; transition: background .2s ease; }
.job-item:first-child { border-radius: var(--radius) var(--radius) 0 0; }
.job-item:last-child { border-bottom: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius); }
.job-item:hover { background: var(--bg-soft); }
.job-item h4 { font-size: 17px; }
.job-item .job-meta { font-size: 14px; color: var(--muted); }
.job-item .job-meta + .job-meta { font-family: var(--mono); font-size: 13px; }
.job-table-head { display: grid; grid-template-columns: 1.3fr 1fr 1fr auto; gap: 24px; padding: 14px 30px; background: var(--navy-800); color: #fff; font-size: 12px; letter-spacing: .1em; font-family: var(--mono); }

/* job posting accordion (expandable detail) */
.job-post { border: 1px solid var(--line); border-bottom: 0; background: #fff; }
.job-post:last-of-type { border-bottom: 1px solid var(--line); }
.job-post > summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 1.3fr 1fr 1fr auto; gap: 24px; align-items: center; padding: 26px 30px; transition: background .2s ease; }
.job-post > summary::-webkit-details-marker { display: none; }
.job-post > summary:hover { background: var(--bg-soft); }
.job-post[open] > summary { background: var(--bg-soft); box-shadow: inset 0 -1px 0 var(--line); }
.job-post .job-title { font-size: 17px; display: flex; align-items: center; gap: 10px; color: var(--ink); }
.job-post .job-title .caret { width: 16px; height: 16px; color: var(--teal-600); transition: transform .25s ease; flex: none; }
.job-post[open] .job-title .caret { transform: rotate(90deg); }
.job-post .job-toggle { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; color: var(--teal-600); white-space: nowrap; }
.job-detail { padding: 4px 30px 34px; }
.job-detail h5 { font-size: 15px; color: var(--ink); margin: 22px 0 10px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.job-detail h5 .en { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; color: var(--muted); font-weight: 400; }
.job-detail h6 { font-size: 13.5px; color: var(--teal-700); margin: 14px 0 6px; font-weight: 600; }
.job-detail p { font-size: 14.5px; line-height: 1.85; color: #444; margin: 0 0 6px; }
.job-detail ul { margin: 0 0 6px; padding-left: 0; list-style: none; }
.job-detail ul li { position: relative; padding-left: 20px; font-size: 14.5px; line-height: 1.8; color: #444; }
/* 职位详情项目符号：纸飞机（发送）图标，上半空心描边 + 下半实心。
   用 mask 取 var(--teal-600)，与原先斜杠圆符号的颜色完全一致（#006166）。 */
.job-detail ul li::before {
  --plane-icon: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%3E%3Cpath%20d='M2%202L22%2012L9%2012Z'%20fill='none'%20stroke='black'%20stroke-width='1.3'%20stroke-linejoin='round'/%3E%3Cpath%20d='M9%2012L22%2012L2%2022Z'%20fill='black'/%3E%3C/svg%3E");
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  background-color: var(--teal-600);
  -webkit-mask: var(--plane-icon) no-repeat center / contain;
  mask: var(--plane-icon) no-repeat center / contain;
}
.job-detail .apply-row { margin-top: 26px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact-info { display: grid; gap: 16px; }
.info-card { border: 1px solid var(--line); background: #fff; padding: 26px 28px; border-radius: var(--radius); display: flex; gap: 18px; align-items: flex-start; }
.info-card .ico { width: 42px; height: 42px; flex: none; background: var(--teal-100); color: var(--teal-600); display: flex; align-items: center; justify-content: center; border-radius: var(--radius); }
.info-card .ico svg { width: 20px; height: 20px; }
.info-card h4 { font-size: 13px; color: var(--muted); font-weight: 600; letter-spacing: .06em; margin-bottom: 6px; }
.info-card p, .info-card a { font-size: 15.5px; color: var(--ink); line-height: 1.7; font-weight: 500; }
.info-card a:hover { color: var(--teal-600); }
.info-card small { display: block; font-size: 12.5px; color: var(--muted-2); margin-top: 6px; font-weight: 400; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 42px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 24px; margin-bottom: 8px; }
.form-card > p { color: var(--muted); font-size: 14px; 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; font-weight: 600; color: var(--ink-2); margin-bottom: 8px; }
.field label i { color: var(--teal-600); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; border: 1px solid var(--line); background: #fafafa; border-radius: var(--radius);
  padding: 12px 14px; font-size: 14.5px; color: var(--ink); outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--teal-500); background: #fff; box-shadow: 0 0 0 3px rgba(0,97,102,.1); }
.field textarea { min-height: 128px; resize: vertical; }
.form-note { font-size: 12.5px; color: var(--muted-2); margin-top: 14px; }
.form-success { display: none; margin-top: 18px; padding: 14px 18px; background: var(--teal-100); border-left: 3px solid var(--teal-500); color: var(--teal-700); font-size: 14px; border-radius: 2px; }
.form-success.show { display: block; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; background: var(--navy-800); color: #fff; overflow: hidden; padding: 76px 0; }
.cta-band::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px); background-size: 48px 48px; }
.cta-band .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-band h2 { font-size: clamp(26px, 3vw, 36px); }
.cta-band p { color: #adadad; margin-top: 12px; font-size: 15.5px; }
.cta-band .btn-wrap { display: flex; gap: 14px; flex: none; }

/* ---------- page hero (inner pages) ---------- */
.page-hero { position: relative; background: var(--navy-900); color: #fff; padding: 76px 0 78px; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px); background-size: 60px 60px; mask-image: linear-gradient(110deg, #000, transparent 80%); -webkit-mask-image: linear-gradient(110deg, #000, transparent 80%); }
.page-hero::after { content: ""; position: absolute; width: 620px; height: 620px; right: -120px; top: -260px; background: radial-gradient(circle, rgba(0,97,102,.22), transparent 65%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(32px, 4vw, 48px); margin-bottom: 16px; }
.page-hero p { color: #b0b0b0; font-size: 16.5px; max-width: 720px; line-height: 1.85; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: #9a9a9a; margin-bottom: 26px; font-family: var(--mono); letter-spacing: .06em; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: #4fb3b5; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-900); color: #a2a2a2; padding-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 56px; }
.footer-brand img { width: 50px; height: 50px; }
.footer-brand .cn { display: block; font-size: 20px; font-weight: 700; color: #fff; letter-spacing: .08em; margin: 18px 0 6px; }
.footer-brand .en { font-family: var(--mono); font-size: 10px; letter-spacing: .24em; color: #5fb5b7; }
.footer-brand p { font-size: 13.5px; line-height: 1.9; margin-top: 20px; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 14px; margin-bottom: 22px; letter-spacing: .04em; }
.footer-col li { margin-bottom: 12px; font-size: 13.5px; }
.footer-col a:hover { color: #4fb3b5; }
.footer-contact li { display: flex; gap: 11px; margin-bottom: 16px; line-height: 1.7; font-size: 13.5px; }
.footer-contact svg { width: 15px; height: 15px; flex: none; margin-top: 5px; color: #4fb3b5; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0; display: flex; justify-content: space-between; gap: 20px; font-size: 12.5px; color: #8a8a8a; flex-wrap: wrap; }
.footer-bottom a:hover { color: #fff; }
.footer-qr { display: flex; align-items: center; gap: 16px; margin-top: 22px; }
.footer-qr img { width: 78px; height: 78px; background: #fff; padding: 5px; border-radius: 2px; }
.footer-qr span { font-size: 12.5px; line-height: 1.7; }

/* ---------- patent / IP section ---------- */
.patent-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 34px; }
.patent-stats > div { background: #fff; padding: 26px 28px; min-width: 0; }
.patent-stats strong { display: block; font-family: var(--mono); font-size: 40px; line-height: 1; color: var(--teal-600); letter-spacing: -.02em; }
.patent-stats span { display: block; margin-top: 10px; font-size: 13.5px; color: var(--muted); }
.patent-figure { border: 1px solid var(--line); background: #fff; padding: 10px; }
.patent-figure svg { width: 100%; height: auto; display: block; }
.patent-figure .figure-caption { margin: 8px 4px 4px; }
.patent-list-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; flex-wrap: wrap; margin: 50px 0 18px; }
.patent-list-head h3 { font-size: 22px; }
.patent-list-head span { font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; color: var(--muted-2); }
.patent-table-wrap { border: 1px solid var(--line); background: #fff; overflow-x: auto; }
.patent-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.patent-table th { text-align: left; padding: 15px 20px; font-size: 12px; font-weight: 600; letter-spacing: .06em; color: var(--muted); background: var(--bg-soft); border-bottom: 1px solid var(--line); white-space: nowrap; }
.patent-table td { padding: 15px 20px; font-size: 14px; color: var(--ink-2); border-bottom: 1px solid var(--line-2); vertical-align: middle; }
.patent-table tbody tr:last-child td { border-bottom: 0; }
.patent-table tbody tr:hover { background: #fafcfc; }
.patent-table .mono, .mono { font-family: var(--mono); letter-spacing: .02em; white-space: nowrap; color: var(--ink); }
.p-type { display: inline-block; min-width: 68px; text-align: center; padding: 4px 10px; color: #fff; font-size: 12px; border-radius: 2px; white-space: nowrap; }
.data-note { margin-top: 16px; font-size: 12.5px; line-height: 1.8; color: var(--muted-2); }
.scroll-hint { display: none; margin: 10px 0 4px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .04em; color: var(--teal-600); }

/* ---------- helpers / animation ---------- */
/* Allow grid/flex tracks to shrink below their content's intrinsic width
   (prevents wide SVGs and long text from causing horizontal overflow) */
.grid > *, .split > *, .hero-inner > *, .tech-compare > *,
.flow > *, .solution-row > *, .contact-grid > *, .value-strip > *,
.stat-ribbon .stat-item, .footer-grid > * { min-width: 0; }

/* Progressive enhancement: content stays visible without JS */
.reveal { transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
html.js-anim .reveal { opacity: 0; transform: translateY(22px); }
html.js-anim .reveal.in { opacity: 1; transform: none; }
html.js-anim .reveal[data-delay="1"] { transition-delay: .08s; }
html.js-anim .reveal[data-delay="2"] { transition-delay: .16s; }
html.js-anim .reveal[data-delay="3"] { transition-delay: .24s; }
html.js-anim .reveal[data-delay="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html.js-anim .reveal { opacity: 1; transform: none; }
}
.hairline { height: 1px; background: var(--line); border: 0; margin: 0; }
.scroll-top { position: fixed; right: 24px; bottom: 24px; width: 44px; height: 44px; border-radius: 50%; background: var(--navy-800); color: #fff; border: 0; display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; z-index: 90; box-shadow: var(--shadow); }
.scroll-top.show { opacity: 1; pointer-events: auto; }
.scroll-top:hover { transform: translateY(-3px); }
.scroll-top svg { width: 18px; height: 18px; }

/* SVG animation */
.flow-line { stroke-dasharray: 7 9; animation: dash 2.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -32; } }
.pulse-dot { animation: pulse 2.6s ease-in-out infinite; transform-origin: center; }
@keyframes pulse { 0%,100% { opacity: .45; } 50% { opacity: 1; } }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .main-nav { gap: 20px; }
  .main-nav > li > a { font-size: 14px; }
  .hero-inner { min-height: 0; gap: 20px; }
  .split { gap: 44px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .container { padding: 0 22px; }
  .section { padding: 76px 0; }
  .patent-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .patent-figure { overflow-x: auto; }
  .patent-figure svg { min-width: 760px; }
  .scroll-hint { display: block; }
  .nav-toggle { display: flex; }
  .header-cta .btn { display: none; }
  .main-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    height: auto; display: none; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); padding: 8px 22px 18px;
  }
  .main-nav.open { display: flex; }
  .main-nav > li { height: auto; border-bottom: 1px solid var(--line-2); }
  .main-nav > li > a { height: 52px; font-size: 15.5px; }
  .main-nav > li > a::after { display: none; }
  .main-nav > li > a.active { color: var(--teal-600); }
  .hero-inner { grid-template-columns: minmax(0, 1fr); padding: 62px 0 30px; }
  .hero-visual { margin-top: 10px; }
  .hero-visual svg { max-width: 420px; }
  .hero h1 { font-size: clamp(34px, 6vw, 46px); }
  .hero-meta { margin-top: 40px; gap: 28px; }
  .stat-ribbon .container { grid-template-columns: repeat(3, 1fr); }
  .stat-item { border-bottom: 1px solid rgba(255,255,255,.09); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split, .split--wide-left { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .section-head--split { flex-direction: column; align-items: flex-start; gap: 18px; }
  .section-head--split .section-lead { max-width: 100%; }
  .tech-compare, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step { border-bottom: 1px solid var(--line); }
  .flow-step::after { display: none; }
  .solution-row { grid-template-columns: minmax(0, 1fr); }
  .solution-row:nth-child(even) .solution-row__media { order: 0; }
  .solution-row__media { min-height: 240px; }
  .solution-row__content { padding: 32px 28px; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  .value-strip { grid-template-columns: minmax(0, 1fr); }
  .job-table-head { display: none; }
  .job-item { grid-template-columns: 1fr 1fr; gap: 10px 20px; }
  .job-item .btn { justify-self: start; }
  .job-post > summary { grid-template-columns: 1fr auto; row-gap: 4px; padding: 20px 22px; }
  .job-post .job-toggle { grid-column: 1 / -1; justify-self: start; }
  .job-detail { padding: 4px 22px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-grid > div:last-child { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .topbar-left span:nth-child(2), .topbar-sep, .topbar-right > span:first-child { display: none; }
  .topbar-right { margin-left: auto; }
  .hero-inner { padding: 48px 0 26px; }
  .hero h1 { font-size: 33px; }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { gap: 22px; }
  .hero-meta strong { font-size: 20px; }
  .stat-ribbon .container { grid-template-columns: repeat(2, 1fr); }
  .stat-item { padding: 26px 18px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .section-title { font-size: 28px; }
  .figure-badge { right: 10px; bottom: 10px; padding: 12px 16px; }
  .flow { grid-template-columns: minmax(0, 1fr); }
  .form-card { padding: 26px 22px; }
  .form-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .spec-table th, .spec-table td { padding: 13px 14px; font-size: 13px; }
  .spec-table tbody th { width: 38%; }
  .cta-band .btn-wrap { flex-direction: column; width: 100%; }
  .cta-band .btn-wrap .btn { width: 100%; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; gap: 8px; }
}