/* ==========================================================================
   恒函租赁 · 工业科技风
   ========================================================================== */
:root {
  --ink: #0b1220;
  --ink-2: #16233a;
  --ink-3: #253449;
  --muted: #5d6d82;
  --muted-2: #8494a8;
  --line: #e2e8f0;
  --line-2: #eef2f7;
  --mist: #f4f6f9;
  --white: #ffffff;
  --blue: #1b6fe0;
  --blue-2: #3d8bff;
  --blue-deep: #0d4f9e;
  --steel: #5b7a99;
  --ok: #14a37f;
  --radius: 4px;
  --wrap: 1240px;
  --wrap-narrow: 860px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow: 0 18px 50px rgba(11, 18, 32, .08);
  --shadow-sm: 0 6px 20px rgba(11, 18, 32, .06);
  --blue-soft: rgba(27, 111, 224, .08);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Roboto Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0; font-family: var(--font); color: var(--ink); background: var(--white);
  font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-x: hidden;
  font-feature-settings: "tnum" 1;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 600; letter-spacing: -.015em; line-height: 1.26; text-wrap: balance; }
h1, h2 { letter-spacing: -.028em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--blue); color: #fff; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 40px; }
.wrap--narrow { max-width: var(--wrap-narrow); }
.center { text-align: center; margin-top: 40px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 999; background: #fff; padding: 10px 16px; }

.ico { width: 20px; height: 20px; flex: none; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono);
  font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--blue); font-weight: 500;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; opacity: .7; }
.eyebrow--light { color: #8fc0ff; }
.eyebrow__idx { color: var(--muted-2); margin-right: 2px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 48px; padding: 0 26px; border: 1px solid transparent; border-radius: var(--radius);
  font-size: 14.5px; font-weight: 500; letter-spacing: .01em; cursor: pointer;
  transition: all .25s var(--ease); white-space: nowrap;
}
.btn .ico { width: 17px; height: 17px; transition: transform .25s var(--ease); }
.btn:hover .ico { transform: translateX(3px); }
.btn--primary { background: var(--blue); color: #fff; border-color: var(--blue); box-shadow: 0 6px 16px rgba(27, 111, 224, .22); }
.btn--primary:hover { background: var(--blue-deep); border-color: var(--blue-deep); box-shadow: 0 10px 24px rgba(13, 79, 158, .26); transform: translateY(-1px); }
.btn--ghost { border-color: rgba(255, 255, 255, .28); color: #fff; background: rgba(255, 255, 255, .03); }
.btn--ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .5); }
.btn--white { background: #fff; color: var(--ink); box-shadow: 0 8px 22px rgba(4, 18, 42, .18); }
.btn--white:hover { background: #eaf2ff; transform: translateY(-1px); }
.btn--line { border-color: #c9d4e2; color: var(--ink); background: transparent; height: 46px; padding: 0 22px; }
.btn--line:hover { border-color: var(--blue); color: var(--blue); background: rgba(27, 111, 224, .04); }
.sec--dark .btn--line { border-color: rgba(255, 255, 255, .26); color: #e8f0fa; }
.sec--dark .btn--line:hover { border-color: #7db3ff; color: #fff; background: rgba(125, 179, 255, .1); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 13.5px; }
.link-more { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--blue); font-weight: 500; }
.link-more .ico { width: 16px; height: 16px; }

/* ---------- 顶部信息条 ---------- */
.topbar { background: var(--ink); color: #9fb0c6; font-size: 12.5px; border-bottom: 1px solid rgba(255, 255, 255, .06); }
.topbar__inner { display: flex; justify-content: space-between; align-items: center; height: 38px; }
.topbar__note { letter-spacing: .08em; font-family: var(--mono); font-size: 11px; text-transform: uppercase; }
.topbar__links { display: flex; gap: 26px; }
.topbar__links a { display: inline-flex; align-items: center; gap: 7px; color: #b9c6d8; transition: color .2s; }
.topbar__links a:hover { color: #fff; }
.topbar__links .ico { width: 14px; height: 14px; }

/* ---------- 页头 ---------- */
.hdr { position: sticky; top: 0; z-index: 60; background: rgba(255, 255, 255, .94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); transition: box-shadow .3s var(--ease); }
.hdr.is-stuck { box-shadow: 0 8px 24px rgba(11, 18, 32, .07); }
.hdr__inner { display: flex; align-items: center; height: 72px; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark { width: 34px; height: 34px; color: var(--blue); display: grid; place-items: center; }
.brand__mark svg { width: 100%; height: 100%; }
.brand__txt { display: flex; flex-direction: column; line-height: 1.15; }
.brand__txt b { font-size: 19px; letter-spacing: .06em; font-weight: 600; }
.brand__txt em { font-family: var(--mono); font-size: 9.5px; letter-spacing: .22em; color: var(--muted-2); font-style: normal; margin-top: 2px; }
.nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav-link { position: relative; font-size: 14px; color: var(--ink-3); padding: 6px 0; transition: color .2s; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: -3px; width: 0; height: 2px; background: var(--blue); transition: width .25s var(--ease); }
.nav-link:hover, .nav-link.is-active { color: var(--blue); }
.nav-link.is-active::after, .nav-link:hover::after { width: 100%; }
.hdr__act { display: flex; align-items: center; gap: 18px; }
.hdr__tel { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 13.5px; color: var(--ink); }
.hdr__tel .ico { width: 16px; height: 16px; color: var(--blue); }
.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 2px; padding: 0; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 11px; width: 18px; height: 1.5px; background: var(--ink); transition: .3s var(--ease); }
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 20px; }
.burger span:nth-child(3) { top: 26px; }
body.nav-open .burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 抽屉 ---------- */
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: 86%; max-width: 400px; background: var(--ink); color: #fff;
  z-index: 90; transform: translateX(100%); transition: transform .35s var(--ease); display: flex; flex-direction: column; padding: 22px 24px 30px;
}
body.nav-open .drawer { transform: none; }
.drawer__head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 20px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.drawer .brand__txt b { color: #fff; }
.drawer__close { background: none; border: 0; color: #fff; font-size: 32px; line-height: 1; cursor: pointer; padding: 0 4px; }
.drawer__nav { display: flex; flex-direction: column; margin-top: 12px; }
.drawer__nav a { display: flex; align-items: baseline; gap: 14px; padding: 17px 2px; border-bottom: 1px solid rgba(255, 255, 255, .07); font-size: 19px; color: #e7eef8; }
.drawer__nav a span { font-family: var(--mono); font-size: 11px; color: #6d86a6; }
.drawer__nav a.is-active { color: #8fc0ff; }
.drawer__foot { margin-top: auto; padding-top: 28px; }
.drawer__foot .btn { width: 100%; }
.drawer__tel { display: flex; align-items: center; gap: 9px; margin: 18px 0 8px; font-family: var(--mono); font-size: 17px; color: #fff; }
.drawer__foot p { font-size: 12.5px; color: #8ea3bd; line-height: 1.6; }
.drawer-mask { position: fixed; inset: 0; background: rgba(5, 10, 18, .55); z-index: 80; opacity: 0; pointer-events: none; transition: opacity .3s; }
body.nav-open .drawer-mask { opacity: 1; pointer-events: auto; }
body.nav-open { overflow: hidden; }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--ink); color: #fff; overflow: hidden; padding: 84px 0 76px; }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(125, 179, 255, .35), transparent); }
.hero__bg, .page-hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero__grid, .page-hero .hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(122, 165, 220, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(122, 165, 220, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 90% at 60% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 90% at 60% 40%, #000 20%, transparent 78%);
}
.hero__glow { position: absolute; width: 720px; height: 720px; right: -140px; top: -220px; border-radius: 50%; background: radial-gradient(circle, rgba(43, 122, 232, .28), transparent 62%); filter: blur(10px); }
.hero__inner { position: relative; display: grid; grid-template-columns: 1.04fr .96fr; gap: 58px; align-items: center; }
.hero__title { font-size: clamp(34px, 3.6vw, 52px); line-height: 1.2; letter-spacing: -.03em; margin: 20px 0 22px; font-weight: 600; max-width: 600px; }
.hero__sub { color: #a9bad0; font-size: 16px; line-height: 1.85; max-width: 540px; }
.hero__actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero__chips { display: flex; gap: 0; margin-top: 44px; border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 22px; }
.chip { padding: 0 26px; border-left: 1px solid rgba(255, 255, 255, .1); }
.chip:first-child { padding-left: 0; border-left: 0; }
.chip b { display: block; font-family: var(--mono); font-size: 21px; font-weight: 500; color: #fff; letter-spacing: .01em; }
.chip span { font-size: 11.5px; color: #8fa3bd; letter-spacing: .04em; }
.hero__visual { position: relative; }
.hero__visual::before { content: ""; position: absolute; inset: -18% -12%; background: radial-gradient(circle at 62% 46%, rgba(43, 122, 232, .22), transparent 62%); pointer-events: none; }
.frame { position: relative; border: 1px solid var(--line); background: #fff; padding: 10px; box-shadow: 0 20px 50px rgba(11, 18, 32, .07); }
.frame img { width: 100%; height: auto; }
.frame--hud { border-color: rgba(140, 178, 228, .28); background: rgba(255, 255, 255, .02); padding: 14px; box-shadow: 0 28px 70px rgba(0, 0, 0, .35); }
.frame--dark { border-color: rgba(255, 255, 255, .14); background: rgba(255, 255, 255, .03); box-shadow: 0 30px 70px rgba(0, 0, 0, .4); }
.frame .corner, .qual__frame .corner { position: absolute; width: 12px; height: 12px; border: 1px solid var(--blue); }
.frame .corner.tl, .qual__frame .corner.tl { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame .corner.tr, .qual__frame .corner.tr { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.frame .corner.bl, .qual__frame .corner.bl { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.frame .corner.br, .qual__frame .corner.br { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.hud { position: absolute; font-family: var(--mono); font-size: 9.5px; letter-spacing: .18em; color: #7fa5d6; }
.hud--tl { top: 18px; left: 22px; }
.hud--br { bottom: 18px; right: 22px; }
.hero__scroll { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 9px; letter-spacing: .28em; color: #6f88a8; }
.hero__scroll span { width: 1px; height: 26px; background: linear-gradient(#6f88a8, transparent); animation: drop 2.2s infinite; }
@keyframes drop { 0%, 100% { opacity: .3; transform: scaleY(.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ---------- 区块 ---------- */
.sec { padding: 84px 0; position: relative; }
.sec--tight { padding: 46px 0; }
.sec--mist { background: var(--mist); }
.sec--dark { background: var(--ink); color: #fff; }
.sec--dark .sec-title { color: #fff; }
.sec--dark .sec-sub { color: #9db0c8; }
.sec--dark .eyebrow { color: #8fc0ff; }
.sec-head { max-width: 700px; margin-bottom: 44px; }
.sec-head--row { max-width: none; display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; }
.sec-head.is-center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-title { font-size: clamp(26px, 2.9vw, 38px); margin: 14px 0 0; letter-spacing: -.028em; line-height: 1.28; }
.sec-sub { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.sec--dark .prose, .sec--dark .prose p { color: #a9bad0; }

/* ---------- 数据 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { position: relative; padding: 4px 30px 0; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat::before { content: ""; position: absolute; left: 30px; top: -14px; width: 20px; height: 2px; background: var(--blue); opacity: .55; }
.stat:first-child::before { left: 0; }
.stat__num { font-family: var(--mono); font-size: clamp(28px, 3.2vw, 42px); font-weight: 500; letter-spacing: -.02em; line-height: 1.1; transition: color .25s var(--ease); font-variant-numeric: tabular-nums; }
.stat:hover .stat__num { color: var(--blue); }
.stat__label { margin-top: 8px; font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }
.sec--dark .stat { border-color: rgba(255, 255, 255, .12); }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 20px; }
.grid--cards { grid-template-columns: repeat(3, 1fr); }
.grid--cards--4 { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 641px) {
  .grid--cards--4 .card {
    display: grid; column-gap: 22px; align-content: center; padding: 28px 32px; min-height: 186px;
    grid-template-columns: 52px 1fr; grid-template-areas: "ico h" "ico p" "ico more";
  }
  .grid--cards--4 .card__top { grid-area: ico; margin: 0; display: block; position: static; }
  .grid--cards--4 .card__ico { width: 52px; height: 52px; }
  .grid--cards--4 .card__ico .ico { width: 24px; height: 24px; }
  .grid--cards--4 .card__no { position: absolute; right: 28px; top: 18px; font-size: 38px; }
  .grid--cards--4 .card h3 { grid-area: h; }
  .grid--cards--4 .card p { grid-area: p; max-width: 560px; }
  .grid--cards--4 .card__more { grid-area: more; padding-top: 12px; }
}
.grid--cards--5 > :last-child {
  grid-column: span 2; display: grid; column-gap: 22px; align-content: center;
  grid-template-columns: 52px 1fr; grid-template-areas: "ico h" "ico p" "ico more"; padding: 30px 32px;
}
.grid--cards--5 > :last-child .card__top { grid-area: ico; margin: 0; display: block; position: static; }
.grid--cards--5 > :last-child .card__ico { width: 52px; height: 52px; }
.grid--cards--5 > :last-child .card__ico .ico { width: 24px; height: 24px; }
.grid--cards--5 > :last-child .card__no { position: absolute; right: 26px; top: 20px; font-size: 38px; }
.grid--cards--5 > :last-child h3 { grid-area: h; }
.grid--cards--5 > :last-child p { grid-area: p; max-width: 560px; }
.grid--cards--5 > :last-child .card__more { grid-area: more; padding-top: 12px; }
.card {
  position: relative; display: flex; flex-direction: column; background: linear-gradient(180deg, #fff, #fdfefe); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 26px 24px; transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
  min-height: 216px; overflow: hidden;
}
.card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(420px 160px at 100% 0, rgba(27, 111, 224, .06), transparent 70%); opacity: 0; transition: opacity .35s var(--ease); }
.card::after { content: ""; position: absolute; left: 0; top: 0; width: 2px; height: 0; background: var(--blue); transition: height .35s var(--ease); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #cfdbea; }
.card:hover::after { height: 100%; }
.card:hover::before { opacity: 1; }
.card__top { position: relative; display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; }
.card__ico { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid #dce6f2; border-radius: var(--radius); background: linear-gradient(160deg, #f2f7ff, #f8fbff); color: var(--blue); transition: background .3s, border-color .3s, transform .35s var(--ease); }
.card__ico .ico { width: 21px; height: 21px; }
.card:hover .card__ico { border-color: rgba(27, 111, 224, .38); background: var(--blue); color: #fff; transform: translateY(-2px); }
.card__no { font-family: var(--mono); font-size: 26px; line-height: 1; color: #e1e9f4; letter-spacing: -.02em; transition: color .3s; }
.card:hover .card__no { color: #cfe0f5; }
.card h3 { position: relative; font-size: 18.5px; margin-bottom: 9px; }
.card p { position: relative; font-size: 13.5px; color: var(--muted); line-height: 1.75; }
.card__more { position: relative; margin-top: auto; padding-top: 20px; display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--blue); letter-spacing: .04em; }
.card__more .ico { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.card:hover .card__more .ico { transform: translateX(3px); }
.sec--dark .card { background: rgba(255, 255, 255, .035); border-color: rgba(255, 255, 255, .12); }
.sec--dark .card h3 { color: #fff; }
.sec--dark .card p { color: #9db0c8; }
.sec--dark .card__ico { border-color: rgba(255, 255, 255, .16); background: rgba(255, 255, 255, .04); color: #8fc0ff; }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.split--rev .split__media { order: 2; }
.split__media { position: relative; }
.split__body .sec-title { margin-top: 14px; margin-bottom: 20px; }
.prose { color: #43536a; font-size: 15.2px; line-height: 1.85; }
.prose p { margin: 0 0 14px; }
.prose p:last-child { margin-bottom: 0; }
.prose h3 { font-size: 21px; margin: 26px 0 12px; color: var(--ink); }
.prose h4 { font-size: 17px; margin: 22px 0 10px; color: var(--ink); }
.prose ul, .prose ol { margin: 12px 0 16px; padding-left: 4px; }
.prose ul li, .prose ol li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; background: var(--blue); }
.prose ol { counter-reset: n; }
.prose ol li { counter-increment: n; }
.prose ol li::before { content: counter(n) "."; position: absolute; left: 0; font-family: var(--mono); font-size: 12px; color: var(--blue); }
.prose blockquote { margin: 22px 0; padding: 4px 0 4px 20px; border-left: 2px solid var(--blue); color: var(--ink-2); font-size: 15.5px; }
.prose strong { color: var(--ink); }
.prose a { color: var(--blue); border-bottom: 1px solid rgba(27, 111, 224, .3); }
.ticks { margin: 26px 0 30px; }
.ticks li { display: flex; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line-2); }
.ticks .tick { width: 20px; height: 20px; flex: none; color: var(--blue); margin-top: 3px; }
.ticks .tick .ico { width: 18px; height: 18px; }
.ticks b { display: block; font-size: 14.5px; font-weight: 600; }
.ticks em { display: block; font-style: normal; font-size: 13px; color: var(--muted); margin-top: 3px; }
.sec--dark .ticks li { border-color: rgba(255, 255, 255, .1); }
.sec--dark .ticks em { color: #93a8c2; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; counter-reset: step; }
.step { position: relative; padding: 30px 26px 26px 0; border-top: 1px solid #cfdae8; background: transparent; }
.step::before { content: ""; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; background: var(--blue); border-radius: 50%; box-shadow: 0 0 0 4px rgba(27, 111, 224, .12); }
.step__no { display: inline-block; font-family: var(--mono); font-size: 11px; font-weight: 500; color: #93a8c0; letter-spacing: .18em; }
.step h4 { font-size: 16.5px; margin: 10px 0 8px; }
.step p { font-size: 13.2px; color: var(--muted); line-height: 1.72; max-width: 240px; }
.sec--mist .step { border-color: #cbd8e8; }

/* ---------- 按钮与链接 ---------- */
.sec-head + .grid { margin-top: 0; }

/* ---------- 问答 ---------- */
.faq { border-top: 1px solid #dbe4ef; }
.faq__item { border-bottom: 1px solid #dbe4ef; }
.faq__item summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; position: relative; font-size: 16px; font-weight: 500; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__plus { position: absolute; right: 4px; top: 26px; width: 14px; height: 14px; }
.faq__plus::before, .faq__plus::after { content: ""; position: absolute; background: var(--blue); transition: transform .25s; }
.faq__plus::before { left: 0; top: 6px; width: 14px; height: 1.5px; }
.faq__plus::after { left: 6px; top: 0; width: 1.5px; height: 14px; }
.faq__item[open] .faq__plus::after { transform: rotate(90deg); }
.faq__a { padding: 0 40px 22px 0; color: var(--muted); font-size: 14.5px; line-height: 1.8; }

/* ---------- 文章卡 ---------- */
.grid--posts { grid-template-columns: repeat(3, 1fr); }
.post-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: .3s var(--ease); overflow: hidden; }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #cfdbea; }
.post-card__cover { position: relative; aspect-ratio: 16 / 9; background: var(--mist); overflow: hidden; }
.post-card__cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(11, 18, 32, .28)); opacity: 0; transition: opacity .35s var(--ease); }
.post-card:hover .post-card__cover::after { opacity: 1; }
.post-card__cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.post-card:hover .post-card__cover img { transform: scale(1.035); }
.post-card__cat { position: absolute; left: 14px; top: 14px; z-index: 1; background: rgba(11, 18, 32, .82); color: #fff; font-size: 11px; padding: 4px 10px; border-radius: 2px; letter-spacing: .06em; backdrop-filter: blur(4px); }
.post-card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.post-card__body time { font-family: var(--mono); font-size: 10.5px; color: var(--muted-2); letter-spacing: .08em; }
.post-card__body h3 { font-size: 16.5px; margin: 9px 0 9px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card:hover .post-card__body h3 { color: var(--blue-deep); }
.post-card__body p { font-size: 13.2px; color: var(--muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card__more { margin-top: auto; padding-top: 16px; font-size: 12.5px; color: var(--blue); display: inline-flex; align-items: center; gap: 6px; }
.post-card__more .ico { width: 14px; height: 14px; transition: transform .25s var(--ease); }
.post-card:hover .post-card__more .ico { transform: translateX(3px); }

/* ---------- CTA ---------- */
.cta-band { position: relative; background: linear-gradient(112deg, #0b3f80, #1b6fe0 54%, #2f83f2); color: #fff; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; inset: 0; background: radial-gradient(620px 260px at 82% 12%, rgba(255, 255, 255, .18), transparent 70%); pointer-events: none; }
.cta-band__bg { position: absolute; inset: 0; background-image: repeating-linear-gradient(115deg, rgba(255, 255, 255, .07) 0 1px, transparent 1px 44px); }
.cta-band__inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 68px 40px; }
.cta-band h2 { font-size: clamp(25px, 2.7vw, 36px); margin-top: 12px; letter-spacing: -.03em; }
.cta-band p { margin-top: 12px; color: rgba(255, 255, 255, .82); font-size: 15px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 内页头 ---------- */
.page-hero { position: relative; background: var(--ink); color: #fff; padding: 56px 0 54px; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(125, 179, 255, .32), transparent); }
.page-hero--slim { padding: 50px 0 46px; }
.page-hero__inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.page-hero h1 { font-size: clamp(30px, 3.6vw, 46px); margin: 16px 0 14px; letter-spacing: -.03em; line-height: 1.22; }
.page-hero p { color: #a8bad1; font-size: 15px; max-width: 620px; }
.page-hero__art { width: 260px; flex: none; opacity: .92; }
.crumb { display: flex; gap: 9px; align-items: center; font-size: 12px; color: #7d93b0; margin-bottom: 20px; font-family: var(--mono); letter-spacing: .04em; }
.crumb a:hover { color: #cfe1f8; }
.crumb i { font-style: normal; opacity: .5; }

/* ---------- 资质 ---------- */
.grid--qual { grid-template-columns: repeat(3, 1fr); gap: 26px; }
.qual { background: #fff; border: 1px solid var(--line); }
.qual__frame { position: relative; aspect-ratio: 4 / 3; background: #eef2f7; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.qual__frame img { width: 100%; height: 100%; object-fit: contain; padding: 12px; }
.qual__pdf, .qual__empty { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--muted-2); }
.qual__empty img { width: 72%; max-width: 220px; opacity: .9; }
.qual__empty span { font-size: 11.5px; letter-spacing: .04em; }
.qual__meta { padding: 18px 20px 20px; border-top: 1px solid var(--line-2); }
.qual__meta h3 { font-size: 15px; line-height: 1.45; }
.qual__meta p { font-size: 12px; color: var(--muted); margin-top: 6px; font-family: var(--mono); letter-spacing: .02em; }
.qual__link { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 12.5px; color: var(--blue); }
.qual__link .ico { width: 14px; height: 14px; }
.qual-note { display: flex; align-items: center; gap: 8px; margin-top: 26px; font-size: 12.5px; color: var(--muted); }
.qual-note .ico { width: 16px; height: 16px; color: var(--ok); }

/* ---------- 联系 ---------- */
.grid--contact { grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.contact-card { background: #fff; padding: 26px 24px; }
.contact-card__ico { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid #dbe6f3; color: var(--blue); margin-bottom: 16px; }
.contact-card > span { display: block; font-size: 11.5px; color: var(--muted-2); letter-spacing: .08em; margin-bottom: 8px; }
.contact-card a, .contact-card b { display: block; font-size: 15px; font-weight: 500; line-height: 1.5; word-break: break-all; }
.contact-card a:hover { color: var(--blue); }
.contact-card em { display: block; font-style: normal; font-size: 11.5px; color: var(--muted-2); margin-top: 8px; }
.mapsketch { position: relative; margin-top: 26px; height: 260px; background: #eef3f8; border: 1px solid var(--line); overflow: hidden; display: grid; place-items: center; }
.mapsketch__grid { position: absolute; inset: 0; background-image: linear-gradient(#dfe8f2 1px, transparent 1px), linear-gradient(90deg, #dfe8f2 1px, transparent 1px); background-size: 42px 42px; }
.mapsketch__grid::before { content: ""; position: absolute; left: 0; right: 0; top: 48%; height: 8px; background: #e2ebf5; border-top: 1px solid #d3dfec; border-bottom: 1px solid #d3dfec; transform: rotate(-7deg); }
.mapsketch__pin { position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--blue); }
.mapsketch__pin .ico { width: 34px; height: 34px; }
.mapsketch__pin span { font-size: 12px; background: #fff; border: 1px solid var(--line); padding: 5px 12px; color: var(--ink-3); }
.mapsketch__label { position: absolute; left: 18px; bottom: 14px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .24em; color: #94a8bf; }

/* ---------- 表单 ---------- */
.form { background: #fff; border: 1px solid var(--line); padding: 34px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: block; margin-bottom: 18px; }
.field > span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 8px; letter-spacing: .03em; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid #d7e1ee; background: #fbfcfe; padding: 12px 14px; font-size: 14px;
  border-radius: 2px; outline: none; transition: border-color .2s, background .2s; resize: vertical;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px rgba(27, 111, 224, .08); }
.field input::placeholder, .field textarea::placeholder { color: #a6b5c8; }
.form__foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 4px; }
.form__hint { font-size: 11.5px; color: var(--muted-2); max-width: 380px; }
.form__msg { margin-top: 14px; font-size: 13.5px; min-height: 20px; }
.form__msg.is-ok { color: var(--ok); }
.form__msg.is-err { color: #d0392b; }

/* ---------- 文章 ---------- */
.article__head { padding: 46px 0 30px; background: var(--mist); border-bottom: 1px solid var(--line); }
.article__head h1 { font-size: clamp(28px, 3.4vw, 44px); margin: 14px 0 20px; letter-spacing: -.03em; line-height: 1.3; }
.article__meta { display: flex; gap: 22px; font-family: var(--mono); font-size: 11.5px; color: var(--muted-2); letter-spacing: .06em; }
.article__cover { margin-top: 34px; }
.article__cover img { width: 100%; max-height: 460px; object-fit: cover; border: 1px solid var(--line); }
.prose--article { padding: 42px 0 20px; font-size: 16px; line-height: 1.95; color: #37475d; }
.prose--article h3 { font-size: 22px; margin: 36px 0 14px; }
.prose--article h4 { font-size: 18px; margin: 28px 0 12px; }
.prose--article p { margin-bottom: 18px; }
.article__foot { display: flex; justify-content: space-between; gap: 16px; padding: 28px 0 60px; border-top: 1px solid var(--line); margin-top: 30px; flex-wrap: wrap; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filters a { padding: 8px 18px; border: 1px solid var(--line); font-size: 13px; color: var(--muted); transition: .2s; }
.filters a:hover { border-color: var(--blue); color: var(--blue); }
.filters a.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }
.empty { color: var(--muted); padding: 40px 0; }
.grid--posts3 { row-gap: 26px; }

/* ---------- 平台矩阵 ---------- */
.matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.mx { position: relative; display: flex; align-items: center; gap: 12px; padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease), background .25s; overflow: hidden; }
.mx::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--blue), rgba(61, 139, 255, 0)); transform: scaleX(0); transform-origin: left; transition: transform .32s var(--ease); }
.mx:hover { border-color: #b9cde8; transform: translateY(-3px); box-shadow: 0 14px 34px rgba(11, 18, 32, .09); background: linear-gradient(180deg, #fff, #f8fbff); }
.mx:hover::after { transform: scaleX(1); }
.mx__ico { width: 40px; height: 40px; flex: none; display: flex; align-items: center; justify-content: center; border: 1px solid #dce6f2; border-radius: var(--radius); background: linear-gradient(160deg, #f2f7ff, #f9fcff); color: var(--blue); transition: background .3s, color .3s, border-color .3s; }
.mx__ico .ico { width: 18px; height: 18px; }
.mx:hover .mx__ico { background: var(--blue); border-color: var(--blue); color: #fff; }
.mx__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mx__body b { font-size: 14.5px; font-weight: 600; color: var(--ink); letter-spacing: .02em; }
.mx__body em { font-style: normal; font-family: var(--mono); font-size: 10.5px; letter-spacing: .02em; color: var(--muted-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mx__go { margin-left: auto; color: #c3cfdd; transition: color .25s, transform .25s; }
.mx__go .ico { width: 15px; height: 15px; transform: rotate(-45deg); }
.mx:hover .mx__go { color: var(--blue); transform: translate(1px, -1px); }
.sec--dark .mx { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .12); }
.sec--dark .mx__ico { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .14); color: #7db3ff; }
.sec--dark .mx__body b { color: #eaf1fa; }
.sec--dark .mx__body em { color: #7f97b3; }

/* ---------- 页脚 ---------- */
.ftr { background: linear-gradient(180deg, #0b1220, #0a101c 60%, #080e19); color: #9db0c8; }
.ftr__main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 50px; padding-top: 62px; padding-bottom: 48px; }
.brand--ftr .brand__mark { color: #6ea8f0; }
.brand--ftr .brand__txt b { color: #fff; }
.ftr__brand > p { margin: 16px 0 20px; font-size: 12.8px; line-height: 1.8; color: #879bb5; max-width: 320px; }
.ftr__contact { display: flex; flex-direction: column; gap: 9px; font-size: 12.8px; }
.ftr__contact a, .ftr__contact span { display: flex; align-items: center; gap: 9px; color: #b3c3d8; }
.ftr__contact a:hover { color: #fff; }
.ftr__contact .ico { width: 15px; height: 15px; color: #6e8db2; }
.ftr__matrix { border-top: 1px solid rgba(255, 255, 255, .08); }
.ftr__matrix-inner { display: flex; align-items: center; gap: 22px; padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap; }
.ftr__matrix-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; color: #6f89a8; text-transform: uppercase; flex: none; }
.ftr__matrix-links { display: flex; flex-wrap: wrap; gap: 8px; }
.ftr__matrix-links a { display: inline-flex; align-items: baseline; gap: 7px; padding: 5px 11px; border: 1px solid rgba(255, 255, 255, .1); border-radius: 2px; font-size: 12.5px; color: #c3d2e4; transition: .2s; }
.ftr__matrix-links a:hover { border-color: rgba(125, 179, 255, .55); color: #fff; background: rgba(125, 179, 255, .1); transform: translateY(-1px); }
.ftr__matrix-links i { font-style: normal; font-family: var(--mono); font-size: 10px; color: #6f89a8; }
.ftr__col { display: flex; flex-direction: column; gap: 10px; font-size: 12.8px; }
.ftr__col h5 { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; color: #6f89a8; text-transform: uppercase; margin-bottom: 4px; font-weight: 500; }
.ftr__col a { color: #a7b9d0; transition: color .2s, transform .2s; width: fit-content; }
.ftr__col a:hover { color: #fff; transform: translateX(3px); }
.ftr__col--cta p { font-size: 12.5px; color: #879bb5; line-height: 1.7; margin-bottom: 6px; }
.ftr__bar { border-top: 1px solid rgba(255, 255, 255, .08); }
.ftr__bar-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 18px; padding-bottom: 18px; font-size: 12px; color: #7d93b0; flex-wrap: wrap; }
.ftr__legal { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.ftr__legal a { color: #a7b9d0; }
.ftr__legal a:hover { color: #fff; }
.ftr__compliance { display: inline-flex; align-items: center; gap: 5px; color: #6f8fb5; }
.ftr__compliance .ico { width: 13px; height: 13px; color: #3f9c83; }

/* ---------- 回到顶部 ---------- */
.totop {
  position: fixed; right: 26px; bottom: 28px; z-index: 70; width: 44px; height: 44px; display: grid; place-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 50%; color: var(--ink-3); cursor: pointer;
  box-shadow: 0 8px 24px rgba(11, 18, 32, .12); opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease), color .2s, border-color .2s;
}
.totop.is-on { opacity: 1; transform: none; pointer-events: auto; }
.totop:hover { color: var(--blue); border-color: #b9cde8; }
.totop .ico { width: 18px; height: 18px; transform: rotate(-90deg); }

/* ---------- 灯箱 ---------- */
.lightbox { position: fixed; inset: 0; background: rgba(6, 11, 19, .92); z-index: 200; display: none; align-items: center; justify-content: center; padding: 40px; }
.lightbox.is-on { display: flex; }
.lightbox img { max-width: 100%; max-height: 90vh; object-fit: contain; background: #fff; }
.lightbox__close { position: absolute; top: 18px; right: 24px; background: none; border: 0; color: #fff; font-size: 40px; cursor: pointer; line-height: 1; }

/* ---------- 动效 ---------- */
.hero__copy { animation: rise .8s var(--ease) both; }
.hero__visual { animation: rise .9s .12s var(--ease) both; }
.page-hero__copy { animation: rise .7s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .nav { gap: 22px; }
  .nav-link { font-size: 13.5px; }
  .hdr__tel { display: none; }
}
@media (max-width: 1024px) {
  .wrap { padding: 0 28px; }
  .nav { display: none; }
  .burger { display: block; }
  .hdr__inner { height: 66px; }
  .hero { padding: 60px 0 64px; }
  .hero__inner { grid-template-columns: 1fr; gap: 42px; }
  .hero__visual { max-width: 560px; }
  .split { grid-template-columns: 1fr; gap: 38px; }
  .split--rev .split__media { order: 0; }
  .grid--cards, .grid--posts, .grid--qual { grid-template-columns: repeat(2, 1fr); }
  .grid--cards--5 > :last-child { grid-column: auto; display: flex; padding: 22px 20px; }
  .grid--cards--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--cards--5 > :last-child .card__top { display: flex; margin-bottom: 20px; }
  .grid--cards--5 > :last-child .card__no { position: static; font-size: 22px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .grid--contact { grid-template-columns: repeat(2, 1fr); }
  .matrix { grid-template-columns: repeat(2, 1fr); }
  .ftr__main { grid-template-columns: 1fr 1fr; gap: 36px; }
  .page-hero__art { width: 200px; }
}
@media (max-width: 720px) {
  body { font-size: 15px; }
  .wrap { padding: 0 20px; }
  .topbar__note { display: none; }
  .topbar__inner { justify-content: center; }
  .topbar__links { gap: 18px; }
  .topbar__links a:last-child { display: none; }
  .hdr__act .btn { display: none; }
  .sec { padding: 56px 0; }
  .sec--tight { padding: 34px 0; }
  .sec-head { margin-bottom: 30px; }
  .sec-head--row { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hero { padding: 46px 0 50px; }
  .hero__title { font-size: 30px; line-height: 1.28; margin: 16px 0 16px; }
  .hero__sub { font-size: 14.2px; line-height: 1.8; }
  .hero__actions { margin-top: 26px; }
  .hero__actions .btn { flex: 1; min-width: 0; padding: 0 16px; font-size: 13.5px; }
  .hero__chips { margin-top: 30px; padding-top: 16px; }
  .chip { padding: 0 14px; }
  .chip b { font-size: 16px; }
  .chip span { font-size: 10.5px; }
  .hero__visual { display: none; }
  .hero__scroll { display: none; }
  .grid--cards, .grid--posts, .grid--qual, .grid--contact { grid-template-columns: 1fr; }
  .grid--cards--4 { grid-template-columns: 1fr; }
  .grid--cards--5 > :last-child { padding: 22px 20px; }
  .card { padding: 22px 20px; min-height: 0; }
  .card__no { font-size: 22px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 26px 0; }
  .matrix { gap: 10px; }
  .mx { padding: 14px 12px; gap: 10px; }
  .mx__ico { width: 34px; height: 34px; }
  .mx__ico .ico { width: 16px; height: 16px; }
  .mx__body b { font-size: 13px; }
  .mx__body em { font-size: 9.5px; }
  .ftr__matrix-inner { gap: 12px; }
  .stat { padding: 0 18px; }
  .stat::before { left: 18px; top: -12px; width: 14px; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat:nth-child(3)::before { left: 0; }
  .stat__num { font-size: 28px; }
  .step { padding: 22px 0 22px 0; }
  .step::before { top: -3px; }
  .step p { max-width: none; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .totop { right: 16px; bottom: 18px; width: 40px; height: 40px; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; padding: 44px 20px; gap: 26px; }
  .cta-band h2 { font-size: 25px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn { flex: 1; }
  .page-hero { padding: 40px 0 38px; }
  .page-hero h1 { font-size: 32px; }
  .page-hero__art { display: none; }
  .crumb { margin-bottom: 18px; }
  .form { padding: 22px 18px; }
  .form__row { grid-template-columns: 1fr; gap: 0; }
  .form__foot { flex-direction: column; align-items: stretch; }
  .form__hint { max-width: none; }
  .ftr__main { grid-template-columns: 1fr; padding-top: 46px; padding-bottom: 34px; gap: 30px; }
  .ftr__bar-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
  .ftr__legal { gap: 12px; font-size: 11.5px; }
  .article__head { padding: 30px 0 22px; }
  .article__head h1 { font-size: 26px; }
  .article__meta { gap: 14px; font-size: 10.5px; flex-wrap: wrap; }
  .prose--article { padding: 26px 0 10px; font-size: 15px; }
  .article__foot .btn { flex: 1; padding: 0 12px; font-size: 13px; }
  .qual { display: grid; grid-template-columns: 128px 1fr; }
  .qual__frame { aspect-ratio: auto; height: 100%; min-height: 140px; }
  .qual__meta { border-top: 0; border-left: 1px solid var(--line-2); }
  .qual__frame img { padding: 8px; }
  .mapsketch { height: 200px; }
  .lightbox { padding: 16px; }
}
@media (max-width: 400px) {
  .hero__title { font-size: 28px; }
  .chip b { font-size: 15px; }
}