/* ==========================================================================
   鑫硕工贸 · 站点样式 v2（视觉打磨版）
   主题：深海军蓝 + 暖橙；零依赖、零外链；图片位用 .ph 占位
   ========================================================================== */

:root {
  --navy-900: #07101d;
  --navy-800: #0b1727;
  --navy-700: #10213a;
  --navy-600: #16294a;

  --orange: #f59e0b;
  --orange-2: #fbbf24;
  --orange-deep: #d97706;
  --orange-ink: #92400e;
  --orange-wash: #fffaf0;
  --orange-line: #fde3ae;

  --ink-900: #0d1520;
  --ink-700: #1f2a37;
  --ink-500: #475467;
  --ink-400: #667085;
  --ink-300: #98a2b3;

  --line: #e6e9ee;
  --line-soft: #f1f4f8;
  --bg: #ffffff;
  --bg-mute: #f7f9fc;
  --bg-warm: #fdfcfa;

  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 8px;

  --sh-1: 0 1px 2px rgba(13, 21, 32, .05);
  --sh-2: 0 2px 4px rgba(13, 21, 32, .04), 0 12px 28px -14px rgba(13, 21, 32, .16);
  --sh-3: 0 4px 8px rgba(13, 21, 32, .05), 0 24px 48px -20px rgba(13, 21, 32, .22);

  --max: 1200px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-900);
  font: 15px/1.78 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: var(--orange-deep); text-decoration: none; transition: color .16s var(--ease); }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  margin: 0 0 .55em;
  color: var(--ink-900);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.02em;
}
h1 { font-size: clamp(32px, 4.2vw, 48px); letter-spacing: -.035em; }
h2 { font-size: clamp(25px, 2.9vw, 36px); letter-spacing: -.028em; }
h3 { font-size: 17px; letter-spacing: -.015em; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--orange); color: #fff; padding: 10px 18px;
  border-radius: 0 0 10px 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; border-radius: 6px; }

/* ------------------------------ 预览提示条 ------------------------------ */
.demo-bar {
  background: linear-gradient(90deg, #fffaeb, #fff7e6);
  border-bottom: 1px solid var(--orange-line);
  color: var(--orange-ink);
  font-size: 12.5px;
  letter-spacing: .01em;
}
.demo-bar .container { text-align: center; padding: 8px 22px; }
.demo-bar code {
  background: #fef0c7; padding: 1px 6px; border-radius: 4px;
  font-size: 11.5px; font-family: ui-monospace, Consolas, monospace;
}

/* -------------------------------- 顶栏 -------------------------------- */
.topbar {
  background: var(--navy-900);
  color: #8ea0b8;
  font-size: 12.5px;
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 18px; height: 38px; }
.topbar a { color: #cbd5e1; }
.topbar a:hover { color: var(--orange-2); text-decoration: none; }
.topbar .tb-right { display: flex; gap: 22px; align-items: center; }
.topbar .dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e; margin-right: 8px; vertical-align: 1px;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, .16);
}

/* -------------------------------- 头部 -------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(11, 23, 39, .94);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  transition: box-shadow .2s var(--ease);
}
.site-header.scrolled { box-shadow: 0 6px 24px -12px rgba(0, 0, 0, .5); }
.header-inner { display: flex; align-items: center; gap: 18px; height: 72px; }

.logo { display: flex; align-items: center; gap: 11px; flex: none; color: #fff; }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 40px; height: 40px; flex: none; border-radius: 11px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--orange-2), var(--orange-deep));
  color: #3b1d00; font-size: 20px; font-weight: 800;
  box-shadow: 0 6px 16px -8px rgba(245, 158, 11, .9), inset 0 1px 0 rgba(255, 255, 255, .45);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text b { font-size: 17.5px; letter-spacing: .06em; font-weight: 700; }
.logo-text span {
  font-size: 9px; letter-spacing: .19em; color: #7c8da6;
  text-transform: uppercase; margin-top: 3px;
}

.nav { display: flex; align-items: center; margin-left: 10px; }
.nav a {
  position: relative; color: #d5dde8; font-size: 14.5px; font-weight: 500;
  padding: 26px 16px; letter-spacing: .01em; white-space: nowrap;
}
.nav a:hover { color: #fff; text-decoration: none; }
.nav a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 17px; height: 2px;
  background: var(--orange); border-radius: 2px;
  transform: scaleX(0); transform-origin: center; transition: transform .22s var(--ease);
}
.nav a:hover::after { transform: scaleX(.6); }
.nav a[aria-current="page"] { color: var(--orange-2); }
.nav a[aria-current="page"]::after { transform: scaleX(1); }

.header-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.search-box {
  display: flex; align-items: center; gap: 6px; width: 178px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 8px; padding: 8px 10px;
  transition: border-color .18s, background .18s;
}
.search-box:focus-within { border-color: rgba(245, 158, 11, .55); background: rgba(255, 255, 255, .09); }
.search-box input {
  width: 100%; border: none; background: none; outline: none;
  color: #fff; font: inherit; font-size: 13px;
}
.search-box input::placeholder { color: #7c8da6; }
.search-box button { border: none; background: none; color: #98a2b3; cursor: pointer; padding: 0; font-size: 15px; line-height: 1; }
.search-box button:hover { color: var(--orange-2); }

.header-phone {
  display: flex; align-items: center; gap: 7px; white-space: nowrap;
  color: var(--orange-2); font-weight: 700; font-size: 14.5px; letter-spacing: .02em;
  background: rgba(245, 158, 11, .1); border: 1px solid rgba(245, 158, 11, .26);
  border-radius: 8px; padding: 8px 13px;
  transition: background .18s, border-color .18s;
}
.header-phone:hover { text-decoration: none; background: rgba(245, 158, 11, .18); border-color: rgba(245, 158, 11, .45); }

.nav-toggle {
  display: none; margin-left: auto; width: 42px; height: 40px;
  border: 1px solid rgba(255, 255, 255, .16); background: none; border-radius: 9px; cursor: pointer;
}
.nav-toggle span { display: block; width: 17px; height: 1.6px; background: #fff; margin: 0 auto; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.6px; background: #fff;
  transition: transform .2s var(--ease);
}
.nav-toggle span::before { top: -5.5px; }
.nav-toggle span::after { top: 5.5px; }

/* -------------------------------- 按钮 -------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 9px; border: 1px solid transparent;
  font-size: 14.5px; font-weight: 600; letter-spacing: .01em; cursor: pointer;
  white-space: nowrap; text-decoration: none;
  transition: background .18s var(--ease), border-color .18s var(--ease),
              color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  color: #3b1d00;
  box-shadow: 0 8px 20px -10px rgba(245, 158, 11, .85), inset 0 1px 0 rgba(255, 255, 255, .35);
}
.btn-primary:hover { background: linear-gradient(180deg, #fcd34d, var(--orange-2)); box-shadow: 0 12px 26px -10px rgba(245, 158, 11, .95); }

.btn-ghost { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .28); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .45); }

.btn-line { background: #fff; border-color: var(--line); color: var(--ink-700); box-shadow: var(--sh-1); }
.btn-line:hover { border-color: var(--orange-line); color: var(--orange-ink); background: var(--orange-wash); }

.btn-lg { padding: 15px 28px; font-size: 15.5px; border-radius: 11px; }
.btn-sm { padding: 9px 16px; font-size: 13.5px; border-radius: 8px; }
.btn-block { width: 100%; }

/* -------------------------------- 首屏 -------------------------------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 480px at 12% 8%, rgba(245, 158, 11, .18), transparent 62%),
    radial-gradient(1000px 560px at 88% 82%, rgba(37, 99, 235, .2), transparent 62%),
    linear-gradient(155deg, #060e19 0%, #0d1c31 48%, #091423 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  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: 72px 72px;
  mask-image: radial-gradient(circle at 46% 36%, #000 22%, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 46% 36%, #000 22%, transparent 76%);
}
.hero::after {
  content: ""; position: absolute; left: 50%; bottom: -180px; width: 900px; height: 360px;
  transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgba(245, 158, 11, .12), transparent);
}
.hero-inner { position: relative; padding: 92px 0 84px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(245, 158, 11, .1); border: 1px solid rgba(245, 158, 11, .32);
  color: var(--orange-2); font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
  padding: 7px 15px; border-radius: 30px; margin-bottom: 26px;
}
.hero-badge i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--orange);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, .18);
}

.hero h1 { color: #fff; margin-bottom: 18px; max-width: 16em; text-shadow: 0 2px 24px rgba(0, 0, 0, .35); }
.hero h1 em { font-style: normal; color: var(--orange-2); }
.hero-sub {
  color: #9fb0c7; font-size: 16.5px; letter-spacing: .04em;
  margin-bottom: 34px; display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center;
}
.hero-sub b { color: #dbe4ef; font-weight: 500; }
.hero-sub .sep { color: #3d4f68; }
.hero-actions { display: flex; gap: 13px; flex-wrap: wrap; }

.hero-strip { position: relative; border-top: 1px solid rgba(255, 255, 255, .08); }
.hero-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-strip .item {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 17px 8px; color: #b8c6d8; font-size: 13.5px;
  border-right: 1px solid rgba(255, 255, 255, .07);
}
.hero-strip .item:last-child { border-right: none; }
.hero-strip .ic { color: var(--orange); font-size: 15px; opacity: .95; }

/* -------------------------------- 区块 -------------------------------- */
.section { padding: 84px 0; }
.section-tight { padding: 56px 0; }
.section-soft { background: var(--bg-mute); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.section-warm { background: var(--bg-warm); }
.section-navy {
  background:
    radial-gradient(800px 400px at 85% 0%, rgba(245, 158, 11, .09), transparent 60%),
    linear-gradient(160deg, #07111f, #0d1d33);
  color: #a9b8cb;
}
.section-navy h2, .section-navy h3 { color: #fff; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.section-head.left { text-align: left; margin-left: 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
  color: var(--orange-deep); margin-bottom: 12px;
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: var(--orange); border-radius: 2px; }
.section-head:not(.left) .eyebrow::after { content: ""; width: 22px; height: 1.5px; background: var(--orange); border-radius: 2px; }
.section-head p { color: var(--ink-400); font-size: 15.5px; margin: 0; }
.section-navy .section-head p { color: #8ea0b8; }
.section-navy .eyebrow { color: var(--orange-2); }

/* -------------------------------- 分类卡 ------------------------------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat-card {
  position: relative; display: block; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 24px 22px 22px; color: inherit;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.cat-card::after {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--orange), var(--orange-2));
  transform: scaleX(0); transform-origin: left; transition: transform .28s var(--ease);
}
.cat-card:hover {
  text-decoration: none; border-color: var(--orange-line);
  box-shadow: var(--sh-2); transform: translateY(-3px);
}
.cat-card:hover::after { transform: scaleX(1); }
.cat-card .ci {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(150deg, #fff7e6, #fdecc8);
  color: var(--orange-deep); font-size: 17px; font-weight: 700; margin-bottom: 15px;
  border: 1px solid #fbe3b4;
}
.cat-card h3 { font-size: 16px; margin-bottom: 6px; }
.cat-card p { font-size: 13px; color: var(--ink-400); margin: 0 0 12px; line-height: 1.7; }
.cat-card .n {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600; color: var(--orange-deep);
}
.cat-card:hover .n { gap: 9px; }
.cat-card .n { transition: gap .18s var(--ease); }


/* ------------------------------ 真实图片位 ------------------------------
   图片未上传时：img 加载失败会被移除，露出下面的 .ph 占位层，不出现破图。
   上传后：图片绝对定位覆盖占位层，object-fit: cover 保证不变形。
   ---------------------------------------------------------------------- */
.p-thumb img,
.case-thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 1; background: #eef1f6;
}
.case-thumb::after { z-index: 2; pointer-events: none; }
.p-tag, .case-thumb .tag { z-index: 3; }

/* -------------------------------- 产品卡 ------------------------------ */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

.p-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.p-card:hover { border-color: var(--orange-line); box-shadow: var(--sh-2); transform: translateY(-4px); }

.p-thumb {
  position: relative; aspect-ratio: 4 / 3; overflow: hidden;
  background: #eef1f6; display: grid; place-items: center;
}
.p-thumb .ph {
  width: 100%; height: 100%; display: grid; place-items: center;
  font-size: 12px; font-weight: 600; letter-spacing: .07em; color: #97a3b4;
  background:
    radial-gradient(360px 180px at 26% 18%, rgba(245, 158, 11, .16), transparent 70%),
    linear-gradient(145deg, #f0f3f8, #e3e8ef);
  transition: transform .35s var(--ease);
}
.p-card:hover .ph { transform: scale(1.03); }
.p-tag {
  position: absolute; left: 11px; top: 11px; z-index: 2;
  background: rgba(8, 17, 30, .78); color: #fff; backdrop-filter: blur(6px);
  font-size: 11px; letter-spacing: .03em; padding: 4px 10px; border-radius: 5px;
}
.p-body { display: flex; flex-direction: column; flex: 1; padding: 16px 18px 18px; }
.p-body h3 { font-size: 15.5px; margin-bottom: 7px; }
.p-spec {
  font-size: 12px; color: var(--ink-300); line-height: 1.7; margin-bottom: 9px;
  padding-bottom: 9px; border-bottom: 1px dashed var(--line-soft);
}
.p-spec b { color: var(--ink-500); font-weight: 600; }
.p-desc { font-size: 13px; color: var(--ink-400); margin: 0; }
.p-link { margin-top: auto; font-size: 13px; font-weight: 600; color: var(--orange-deep); }

/* -------------------------------- 流程 -------------------------------- */
.flow { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.flow::before {
  content: ""; position: absolute; top: 40px; left: 8%; right: 8%; height: 1px;
  background: repeating-linear-gradient(90deg, #e3e8ef 0 6px, transparent 6px 12px);
  z-index: 0;
}
.flow-step {
  position: relative; z-index: 1; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 30px 18px 22px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.flow-step:hover { border-color: var(--orange-line); box-shadow: var(--sh-2); transform: translateY(-3px); }
.flow-num {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  width: 27px; height: 27px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  color: #3b1d00; font-size: 12.5px; font-weight: 800;
  box-shadow: 0 0 0 4px #fff, 0 6px 14px -6px rgba(245, 158, 11, .9);
}
.flow-ic {
  width: 48px; height: 48px; margin: 4px auto 15px; border-radius: 50%;
  display: grid; place-items: center; font-size: 18px;
  background: var(--orange-wash); color: var(--orange-deep);
  border: 1px solid var(--orange-line);
}
.flow-step h3 { font-size: 15px; margin-bottom: 7px; }
.flow-step p { font-size: 12.5px; color: var(--ink-400); margin: 0; line-height: 1.7; }

/* -------------------------------- 案例 -------------------------------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  display: block; overflow: hidden; background: #fff; color: inherit;
  border: 1px solid var(--line); border-radius: var(--r-md);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
a.case-card:hover { text-decoration: none; box-shadow: var(--sh-2); transform: translateY(-4px); border-color: var(--orange-line); }
.case-thumb {
  position: relative; aspect-ratio: 16 / 10; display: grid; place-items: center;
  color: #97a3b4; font-size: 12px; font-weight: 600; letter-spacing: .06em;
  background:
    radial-gradient(420px 200px at 22% 12%, rgba(245, 158, 11, .15), transparent 68%),
    linear-gradient(150deg, #eaeef4, #d9e0e9);
  overflow: hidden;
}
.case-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 17, 30, .06));
}
.case-thumb .tag {
  position: absolute; left: 11px; top: 11px; z-index: 2;
  background: #fff; color: var(--ink-700); font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: 5px; box-shadow: var(--sh-1);
}
.case-body { padding: 17px 19px 20px; }
.case-body h3 { font-size: 16px; margin-bottom: 6px; }
.case-body p { font-size: 13px; color: var(--ink-400); margin-bottom: 11px; line-height: 1.7; }
.case-loc { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-300); }
.case-card:hover h3 { color: var(--orange-ink); }

/* ------------------------------ 优势 / 数据 ---------------------------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv {
  padding: 26px 22px; border-radius: var(--r-md);
  background: rgba(255, 255, 255, .035);
  border: 1px solid rgba(255, 255, 255, .08);
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.adv:hover { background: rgba(255, 255, 255, .06); border-color: rgba(245, 158, 11, .3); transform: translateY(-3px); }
.adv .ai {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: rgba(245, 158, 11, .14); color: var(--orange-2); font-size: 17px;
  margin-bottom: 15px; border: 1px solid rgba(245, 158, 11, .22);
}
.adv h3 { color: #fff; font-size: 15.5px; margin-bottom: 7px; }
.adv p { color: #8ea0b8; font-size: 13px; margin: 0; line-height: 1.75; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 46px; padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.stats .s { text-align: center; position: relative; }
.stats .s + .s::before {
  content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .14), transparent);
}
.stats .n {
  font-size: clamp(32px, 3.6vw, 44px); font-weight: 800; line-height: 1;
  letter-spacing: -.04em; font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, #fde68a, var(--orange));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats .l { font-size: 13px; color: #8ea0b8; margin-top: 10px; letter-spacing: .02em; }

/* -------------------------------- CTA -------------------------------- */
.cta { position: relative; overflow: hidden; text-align: center; padding: 78px 0 84px; }
.cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 300px at 50% 120%, rgba(245, 158, 11, .1), transparent 70%);
}
.cta .container { position: relative; }
.cta h2 { margin-bottom: 10px; }
.cta p { color: var(--ink-400); margin-bottom: 30px; }
.cta-actions { display: flex; gap: 13px; justify-content: center; flex-wrap: wrap; }

/* -------------------------------- 页脚 -------------------------------- */
.site-footer { background: #050c16; color: #8ea0b8; font-size: 13.5px; }
.footer-top { padding: 0 0 42px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.35fr; gap: 42px; padding-top: 54px; }
.site-footer .logo { margin-bottom: 18px; }
.site-footer p { color: #7c8da6; font-size: 13px; line-height: 1.85; margin-bottom: 18px; }
.site-footer h3 {
  color: #fff; font-size: 13px; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; margin-bottom: 18px;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a, .site-footer a { color: #8ea0b8; }
.footer-links a:hover, .site-footer a:hover { color: var(--orange-2); text-decoration: none; }
.footer-contact { list-style: none; margin: 0; padding: 0; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 11px; line-height: 1.65; }
.footer-contact .ic { color: var(--orange); flex: none; width: 14px; }
.footer-hours {
  margin-top: 16px; padding: 13px 15px; border-radius: 9px;
  background: rgba(255, 255, 255, .035); border: 1px solid rgba(255, 255, 255, .07);
  font-size: 12.5px; line-height: 1.8;
}
.footer-hours b { display: block; color: #dbe4ef; font-weight: 600; margin-bottom: 3px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 20px 0 26px; display: flex; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #5f7189;
}

/* ------------------------------ 内页头/面包屑 --------------------------- */
.breadcrumb { font-size: 12.5px; color: #8b98a9; padding: 18px 0 0; }
.breadcrumb a { color: var(--ink-400); }
.breadcrumb a:hover { color: var(--orange-deep); }
.breadcrumb span { margin: 0 8px; color: #c3cbd6; }

.page-head { padding: 30px 0 8px; }
.page-head h1 { margin-bottom: 14px; }
.page-head .lead { color: var(--ink-500); font-size: 16.5px; line-height: 1.75; max-width: 760px; }

.page-hero {
  position: relative; overflow: hidden; text-align: center; padding: 62px 0 66px;
  color: #fff;
  background:
    radial-gradient(760px 340px at 22% 6%, rgba(245, 158, 11, .16), transparent 62%),
    linear-gradient(155deg, #060e19, #12233c);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  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: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 72%);
}
.page-hero .container { position: relative; }
.page-hero .eyebrow { color: var(--orange-2); justify-content: center; }
.page-hero .eyebrow::before, .page-hero .eyebrow::after { content: ""; width: 22px; height: 1.5px; background: var(--orange); }
.page-hero h1 { color: #fff; margin-bottom: 12px; }
.page-hero p { color: #9fb0c7; margin: 0; font-size: 15.5px; }

/* -------------------------------- 正文 -------------------------------- */
.prose { max-width: 840px; }
.prose h2 { margin-top: 46px; font-size: 25px; padding-top: 6px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 30px; font-size: 17.5px; color: var(--ink-700); }
.prose p, .prose li { color: var(--ink-500); font-size: 15.5px; line-height: 1.85; }
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 22px; }
.prose li { margin-bottom: 8px; }
.prose li::marker { color: var(--orange); }
.prose strong { color: var(--ink-900); font-weight: 650; }
.prose .callout {
  margin: 26px 0; padding: 16px 18px 16px 20px;
  background: var(--orange-wash); border: 1px solid var(--orange-line);
  border-left: 3px solid var(--orange); border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14.5px; color: var(--orange-ink); line-height: 1.8;
}
.prose .callout strong { color: #7c2d12; }

table.tbl {
  width: 100%; border-collapse: separate; border-spacing: 0;
  margin: 10px 0 26px; font-size: 14.5px;
  border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden;
  background: #fff;
}
table.tbl th, table.tbl td {
  padding: 12px 16px; text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}
table.tbl th {
  background: linear-gradient(180deg, #f8fafc, #f4f6fa);
  font-size: 13px; font-weight: 650; color: var(--ink-700);
  letter-spacing: .02em; white-space: nowrap;
  border-bottom: 1px solid var(--line);
}
table.tbl tbody tr:nth-child(even) { background: #fcfdfe; }
table.tbl tbody tr:hover { background: var(--orange-wash); }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* -------------------------------- FAQ -------------------------------- */
.faq { max-width: 860px; }
.faq details {
  margin-bottom: 11px; border: 1px solid var(--line); border-radius: var(--r-sm);
  background: #fff; overflow: hidden; transition: border-color .18s, background .18s;
}
.faq details:hover { border-color: #dfe5ee; }
.faq details[open] { border-color: var(--orange-line); background: #fffdf9; }
.faq summary {
  cursor: pointer; list-style: none; padding: 17px 20px;
  display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  font-weight: 600; font-size: 15.5px; color: var(--ink-900);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 22px; height: 22px; line-height: 21px;
  text-align: center; border-radius: 50%; font-size: 16px; font-weight: 400;
  color: var(--orange-deep); background: var(--orange-wash);
  border: 1px solid var(--orange-line); transition: transform .2s var(--ease);
}
.faq details[open] summary::after { content: "−"; transform: rotate(180deg); }
.faq .a { padding: 0 20px 18px; color: var(--ink-500); font-size: 14.8px; line-height: 1.85; }
.faq .a p:last-child { margin-bottom: 0; }

/* -------------------------------- 筛选 -------------------------------- */
.search-inline { max-width: 440px; margin-bottom: 20px; }
.search-inline input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; font-size: 14px; color: var(--ink-900); background: #fff;
  outline: none; transition: border-color .16s, box-shadow .16s;
}
.search-inline input::placeholder { color: var(--ink-300); }
.search-inline input:focus { border-color: rgba(245, 158, 11, .65); box-shadow: 0 0 0 4px rgba(245, 158, 11, .1); }

.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 30px; }
.chip {
  padding: 7px 15px; border-radius: 30px; cursor: pointer;
  border: 1px solid var(--line); background: #fff; color: var(--ink-500);
  font: inherit; font-size: 13px; transition: all .16s var(--ease);
}
.chip:hover { border-color: var(--orange-line); color: var(--orange-ink); background: var(--orange-wash); }
.chip.active {
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  border-color: var(--orange); color: #3b1d00; font-weight: 600;
  box-shadow: 0 6px 14px -8px rgba(245, 158, 11, .9);
}
.filter-count { margin-left: auto; font-size: 12.5px; color: var(--ink-300); font-variant-numeric: tabular-nums; }

/* -------------------------------- 表单 -------------------------------- */
.form-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px; box-shadow: var(--sh-2);
}
.field { margin-bottom: 16px; }
.field label {
  display: block; margin-bottom: 7px; font-size: 12.5px;
  font-weight: 600; color: var(--ink-700); letter-spacing: .02em;
}
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px;
  font: inherit; font-size: 14px; color: var(--ink-900); background: #fff;
  outline: none; transition: border-color .16s, box-shadow .16s;
}
.field input:hover, .field textarea:hover, .field select:hover { border-color: #d5dbe4; }
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: rgba(245, 158, 11, .7); box-shadow: 0 0 0 4px rgba(245, 158, 11, .1);
}
.field textarea { min-height: 104px; resize: vertical; line-height: 1.7; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-status {
  display: none; margin-top: 14px; padding: 12px 14px; border-radius: 9px;
  font-size: 13.5px; background: var(--orange-wash);
  border: 1px solid var(--orange-line); color: var(--orange-ink);
}
.form-status.show { display: block; }
.form-note { font-size: 12px; color: var(--ink-300); margin-top: 12px; line-height: 1.7; }

/* -------------------------------- 联系 -------------------------------- */
.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 28px 20px 24px; text-align: center;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.contact-card:hover { border-color: var(--orange-line); box-shadow: var(--sh-2); transform: translateY(-3px); }
.contact-card .ci {
  width: 48px; height: 48px; margin: 0 auto 15px; border-radius: 50%;
  display: grid; place-items: center; font-size: 18px; color: #fff;
  background: linear-gradient(160deg, var(--orange-2), var(--orange-deep));
  box-shadow: 0 8px 18px -10px rgba(245, 158, 11, .95);
}
.contact-card .k { font-size: 12.5px; color: var(--ink-300); margin-bottom: 6px; letter-spacing: .04em; }
.contact-card .v { font-size: 16px; font-weight: 700; color: var(--ink-900); letter-spacing: -.01em; }
.contact-card .v a { color: var(--ink-900); }
.contact-card .v a:hover { color: var(--orange-deep); text-decoration: none; }
.contact-card .d { font-size: 12px; color: var(--ink-300); margin-top: 5px; }

/* -------------------------------- 文章 -------------------------------- */
.art-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.art-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.art-card:hover { text-decoration: none; border-color: var(--orange-line); box-shadow: var(--sh-2); transform: translateY(-3px); }
.art-top {
  padding: 22px 22px 0; display: flex; align-items: center; gap: 10px;
  font-size: 11.5px; color: var(--ink-300); letter-spacing: .04em;
}
.art-cat {
  color: var(--orange-deep); font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
}
.art-body { padding: 12px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.art-body h3 { font-size: 16.5px; line-height: 1.5; margin-bottom: 8px; color: var(--ink-900); }
.art-body p { font-size: 13px; color: var(--ink-400); margin: 0 0 14px; line-height: 1.75; }
.art-more { margin-top: auto; font-size: 13px; font-weight: 600; color: var(--orange-deep); }

.meta-row { display: flex; gap: 18px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-300); margin-bottom: 30px; }
.meta-row span { display: inline-flex; align-items: center; gap: 6px; }

/* -------------------------------- 404 --------------------------------- */
.err-wrap { text-align: center; padding: 118px 0 120px; }
.err-code {
  font-size: clamp(72px, 12vw, 120px); font-weight: 800; line-height: .9;
  letter-spacing: -.06em;
  background: linear-gradient(180deg, var(--orange-2), var(--orange-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.err-wrap h1 { margin-top: 18px; font-size: 27px; }
.err-wrap p { color: var(--ink-400); max-width: 470px; margin: 0 auto 30px; line-height: 1.8; }

/* ------------------------------ 浮动联系 ------------------------------- */
.float-cta {
  position: fixed; right: 22px; bottom: 24px; z-index: 70;
  display: flex; flex-direction: column; gap: 10px;
}
.float-cta a {
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  background: #fff; color: var(--ink-700); font-size: 17px;
  border: 1px solid var(--line); box-shadow: var(--sh-2);
  transition: transform .18s var(--ease), background .18s, color .18s, border-color .18s;
}
.float-cta a:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--orange-line); color: var(--orange-ink); }
.float-cta a.primary {
  background: linear-gradient(180deg, var(--orange-2), var(--orange));
  color: #3b1d00; border-color: var(--orange);
  box-shadow: 0 10px 24px -10px rgba(245, 158, 11, .95);
}

/* -------------------------------- 响应式 ------------------------------- */
@media (max-width: 1080px) {
  .nav { display: none; }
  .search-box { display: none; }
  .grid-4, .cat-grid, .adv-grid, .contact-cards, .stats { grid-template-columns: repeat(2, 1fr); }
  .stats .s:nth-child(3)::before { display: none; }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow::before { display: none; }
  .case-grid, .grid-3, .art-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-strip .container { grid-template-columns: repeat(2, 1fr); }
  .hero-strip .item:nth-child(2) { border-right: none; }
  .hero-strip .item:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, .07); }
}

@media (max-width: 760px) {
  .topbar { display: none; }
  .header-phone { display: none; }
  .nav-toggle { display: block; }
  .site-header.open .nav {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--navy-800); border-bottom: 1px solid rgba(255, 255, 255, .1);
    padding: 10px 18px 18px;
  }
  .site-header.open .nav a { padding: 13px 10px; border-radius: 8px; }
  .site-header.open .nav a::after { display: none; }

  .section { padding: 56px 0; }
  .section-tight { padding: 40px 0; }
  .section-head { margin-bottom: 34px; }

  .grid-4, .cat-grid, .adv-grid, .contact-cards, .stats,
  .flow, .case-grid, .grid-3, .grid-2, .art-grid, .form-row { grid-template-columns: 1fr; }
  .stats .s + .s::before { display: none; }
  .stats .s { padding: 14px 0; }

  .hero-inner { padding: 62px 0 58px; }
  .hero-sub { font-size: 15px; }
  .hero-strip .item { padding: 14px 6px; font-size: 12.5px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta { padding: 56px 0 62px; }
  .cta-actions .btn { width: 100%; }
  .float-cta { right: 14px; bottom: 16px; }
  .float-cta a { width: 42px; height: 42px; font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .topbar, .float-cta, .demo-bar, .cta { display: none !important; }
  body { font-size: 12pt; color: #000; }
  .section { padding: 16px 0; }
}

/* ==========================================================================
   v3 打磨：动效、服务区域、CTA 卡片化、移动端表格
   ========================================================================== */

/* 图片轻微推近 */
.p-card img { transition: transform .6s var(--ease); }
.p-card:hover img { transform: scale(1.05); }

/* 产品卡底部入口 */
.p-link {
  display: inline-flex; align-items: center; gap: 5px;
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line-soft);
  font-size: 12.5px; font-weight: 600; color: var(--orange-deep);
  transition: gap .18s var(--ease), color .18s;
}
.p-link:hover { gap: 9px; color: var(--orange-ink); text-decoration: none; }

/* 服务区域 */
.region { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.region-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: 30px;
  background: #fff; border: 1px solid var(--line);
  font-size: 14px; color: var(--ink-700); font-weight: 500;
  transition: border-color .18s var(--ease), color .18s, box-shadow .18s, transform .18s var(--ease);
}
.region-chip::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--orange); opacity: .85;
}
.region-chip:hover { border-color: var(--orange-line); color: var(--orange-ink); box-shadow: var(--sh-1); transform: translateY(-1px); }
.region-chip.muted { background: transparent; color: var(--ink-400); font-weight: 400; }
.region-chip.muted::before { background: var(--ink-300); }

.region-note {
  margin: 22px auto 0; max-width: 640px; text-align: center;
  font-size: 13px; color: var(--ink-300); line-height: 1.9;
}

/* CTA 卡片化 */
.cta { padding: 0 0 88px; }
.cta .container {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: 22px;
  padding: 58px 32px; box-shadow: var(--sh-2);
}
.cta .container::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(560px 240px at 12% 0%, rgba(245, 158, 11, .07), transparent 65%),
    radial-gradient(560px 240px at 88% 100%, rgba(37, 99, 235, .06), transparent 65%);
}
.cta .container > * { position: relative; }
.cta h2 { margin-bottom: 10px; }

/* 滚动进入动效（未启用 JS 时不可见失败） */
.js .reveal { opacity: 0; transform: translateY(14px); }
.js .reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

/* 移动端表格横向滚动 */
@media (max-width: 760px) {
  .prose table.tbl {
    display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  .prose table.tbl thead, .prose table.tbl tbody { display: table; width: 100%; }
  .cta .container { padding: 40px 20px; border-radius: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1 !important; transform: none !important; }
  .p-card:hover img { transform: none; }
}
/* ==========================================================================
   v4 大厂化：降饱和、加留白、强背书、统一图片处理
   ========================================================================== */

/* 1) 更克制的强调色：橙色只出现在按钮/编号/关键数字 */
.btn-primary {
  background: var(--orange);
  background-image: none;
  color: #fff;
  box-shadow: 0 1px 2px rgba(13, 21, 32, .12);
}
.btn-primary:hover { background: var(--orange-deep); background-image: none; color: #fff; }

/* 2) 更大的排版尺度与留白 */
.section { padding: 104px 0; }
.section-tight { padding: 64px 0; }
.section-head { margin-bottom: 60px; }
h2 { font-size: clamp(26px, 2.6vw, 38px); letter-spacing: -.035em; }
.hero h1 { font-size: clamp(34px, 4.4vw, 56px); line-height: 1.14; letter-spacing: -.045em; }
.hero-inner { padding: 108px 0 96px; }
.hero-sub { font-size: 17.5px; }

/* 3) 卡片：更淡的阴影、更统一的圆角与描边 */
.p-card, .cat-card, .case-card, .art-card, .contact-card, .flow-step {
  border-radius: 12px;
  border-color: #e9edf2;
  box-shadow: none;
}
.p-card:hover, .cat-card:hover, .case-card:hover, .art-card:hover {
  box-shadow: 0 12px 32px -18px rgba(13, 21, 32, .22);
  transform: translateY(-2px);
}
.p-card:hover img { transform: scale(1.02); }

/* 4) 图片统一观感 */
.p-thumb img, .case-thumb img {
  filter: saturate(.94) contrast(1.03);
}
.p-thumb, .case-thumb { background: #f4f6f9; }
.p-card:hover .p-thumb img, .case-card:hover .case-thumb img { filter: saturate(1) contrast(1.04); }

/* 5) 数据条：改白色数字，去掉渐变 */
.stats .n {
  background: none;
  -webkit-text-fill-color: #fff;
  color: #fff;
  font-weight: 700;
  letter-spacing: -.045em;
}
.stats .l { color: #8b9aae; letter-spacing: .06em; }

/* 6) 品牌墙 */
.brands { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 30px 0; background: #fff; }
.brands-inner { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; justify-content: center; }
.brands .label { font-size: 12px; color: var(--ink-300); letter-spacing: .14em; text-transform: uppercase; }
.brand-item {
  font-size: 15px; font-weight: 600; color: #8b98a9; letter-spacing: .02em;
  padding-left: 26px; border-left: 1px solid var(--line-soft);
  transition: color .2s var(--ease);
}
.brand-item:first-child { border-left: none; padding-left: 0; }
.brand-item:hover { color: var(--ink-700); }

/* 7) 资质保障条 */
.assure { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: 12px; overflow: hidden; }
.assure-item { background: #fff; padding: 26px 22px; }
.assure-item .t { font-size: 14.5px; font-weight: 700; color: var(--ink-900); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.assure-item .t i { width: 18px; height: 18px; border-radius: 4px; background: var(--orange-wash); border: 1px solid var(--orange-line); color: var(--orange-deep); font-size: 11px; font-style: normal; display: grid; place-items: center; }
.assure-item .d { font-size: 12.5px; color: var(--ink-400); line-height: 1.7; margin: 0; }

/* 8) 首屏更克制：降低橙色光晕 */
.hero {
  background:
    radial-gradient(900px 480px at 14% 10%, rgba(245, 158, 11, .10), transparent 62%),
    radial-gradient(900px 520px at 86% 84%, rgba(37, 99, 235, .14), transparent 62%),
    linear-gradient(160deg, #060d18 0%, #0c1a2c 52%, #08131f 100%);
}
.hero-badge { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.14); color: #d5dde8; }
.hero-badge i { background: var(--orange); }
.hero-strip .item { font-size: 13px; color: #9aa9bd; }

/* 9) 导航更安静 */
.nav a { font-size: 14px; color: #c3cedd; }
.nav a[aria-current="page"] { color: #fff; }
.nav a[aria-current="page"]::after { background: var(--orange); }

/* 10) 正文层级 */
.prose h2 { font-size: 26px; letter-spacing: -.03em; }
.prose p, .prose li { font-size: 15.5px; line-height: 1.9; color: #414d5f; }
table.tbl th { background: #fafbfd; letter-spacing: .03em; }

@media (max-width: 1080px) {
  .assure { grid-template-columns: repeat(2, 1fr); }
  .brands-inner { gap: 20px; }
  .brand-item { padding-left: 20px; font-size: 14px; }
}
@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .hero-inner { padding: 72px 0 64px; }
  .assure { grid-template-columns: 1fr; }
  .brand-item { border-left: none; padding-left: 0; }
}
/* ==========================================================================
   v5 动效层
   ========================================================================== */

/* 1) 首屏入场：错峰淡入上移 */
@keyframes heroIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}
.hero-badge, .hero h1, .hero-sub, .hero-actions, .hero-note {
  animation: heroIn .75s var(--ease) both;
}
.hero-badge    { animation-delay: .05s; }
.hero h1       { animation-delay: .14s; }
.hero-sub      { animation-delay: .23s; }
.hero-actions  { animation-delay: .32s; }
.hero-note     { animation-delay: .40s; }
.hero-strip    { animation: heroIn .8s var(--ease) .42s both; }

/* 2) 吸顶导航滚动后收紧 */
.site-header { transition: box-shadow .3s var(--ease), background .3s var(--ease); }
.header-inner { transition: height .28s var(--ease); }
.site-header.compact .header-inner { height: 60px; }
.logo, .logo-mark { transition: transform .28s var(--ease), width .28s var(--ease), height .28s var(--ease), font-size .28s var(--ease); }
.site-header.compact .logo-mark { width: 32px; height: 32px; font-size: 16px; border-radius: 9px; }
.site-header.compact .logo-text b { font-size: 16px; }
.site-header.compact .nav a { padding-top: 20px; padding-bottom: 20px; }
.site-header.compact .nav a::after { bottom: 13px; }

/* 3) 图片淡入（避免生硬弹出） */
.js .p-thumb img, .js .case-thumb img {
  opacity: 0;
  transition: opacity .5s var(--ease), transform .6s var(--ease), filter .3s;
}
.js .p-thumb img.loaded, .js .case-thumb img.loaded { opacity: 1; }

/* 4) 卡片悬浮统一缓动 */
.p-card, .cat-card, .case-card, .art-card, .adv, .flow-step, .contact-card, .assure-item {
  transition: transform .28s var(--ease), box-shadow .28s var(--ease),
              border-color .28s var(--ease), background .28s var(--ease);
}
.assure-item:hover { background: #fcfdff; }

/* 5) 浮动按钮入场 */
.float-cta a { animation: heroIn .5s var(--ease) both; }
.float-cta a:nth-child(1) { animation-delay: .8s; }
.float-cta a:nth-child(2) { animation-delay: .9s; }

/* 6) 筛选 chip 切换反馈 */
.chip { transition: background .2s var(--ease), border-color .2s, color .2s, transform .15s var(--ease); }
.chip:active { transform: scale(.96); }

/* 7) 详情展开更顺 */
.faq .a { animation: heroIn .35s var(--ease) both; }

@media (prefers-reduced-motion: reduce) {
  .hero-badge, .hero h1, .hero-sub, .hero-actions, .hero-note, .hero-strip,
  .float-cta a, .faq .a { animation: none !important; opacity: 1 !important; transform: none !important; }
  .js .p-thumb img, .js .case-thumb img { opacity: 1 !important; }
  .site-header.compact .header-inner { height: 72px; }
}
/* ==========================================================================
   v6 设计规范：60-30-10 配色、字号阶梯、8px 基线、关键词条
   ========================================================================== */

/* 字号阶梯统一（12.5 / 14 / 16 / 20 / 26 / 34 / 48） */
:root {
  --fs-xs: 12.5px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-lg: 20px;
  --fs-xl: 26px;
  --fs-2xl: 34px;
  --fs-3xl: 48px;

  --sp-1: 8px;  --sp-2: 16px; --sp-3: 24px;
  --sp-4: 32px; --sp-5: 48px; --sp-6: 64px; --sp-7: 96px;
}

/* 正文链接：降低橙色面积，改用深色 + 橙色下划线（点击时才亮） */
.prose a, .faq .a a, .meta-row a {
  color: var(--ink-900);
  border-bottom: 1px solid var(--orange-line);
  padding-bottom: 1px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.prose a:hover, .faq .a a:hover, .meta-row a:hover {
  color: var(--orange-deep);
  border-bottom-color: var(--orange);
  text-decoration: none;
}

/* 全站强调色收口：只剩 CTA / 编号 / 选中态 / 关键数字 */
.eyebrow { color: var(--ink-400); font-weight: 600; letter-spacing: .22em; }
.eyebrow::before, .eyebrow::after { background: var(--orange); }
.section-head:not(.left) .eyebrow::after { opacity: .45; }

/* 品牌关键词条 */
.keywords {
  background: #fff;
  border-bottom: 1px solid var(--line-soft);
  padding: 34px 0;
}
.keywords-inner {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
}
.kw {
  text-align: center; padding: 0 18px;
  border-right: 1px solid var(--line-soft);
}
.kw:last-child { border-right: none; }
.kw b {
  display: block; font-size: var(--fs-lg); font-weight: 700;
  color: var(--ink-900); letter-spacing: -.02em; margin-bottom: 4px;
}
.kw span {
  display: block; font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--ink-300);
}

/* 资讯卡：加顶部色块，增加视觉重量 */
.art-card { overflow: hidden; }
.art-band {
  height: 6px;
  background: linear-gradient(90deg, var(--orange), #fbbf24 60%, #e5e9f0);
  opacity: .85;
}
.art-card:hover .art-band { opacity: 1; }
.art-top { padding-top: 18px; }

/* 产品/案例图卡统一内边距，视觉更整 */
.p-body { padding: 16px 18px 18px; }
.p-spec { font-size: 12px; }

@media (max-width: 760px) {
  .keywords-inner { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .kw:nth-child(2) { border-right: none; }
}
/* ==========================================================================
   v7 底色层次：米灰底 + 白卡片（解决大面积纯白刺眼）
   规律：body 退到 #f5f6f8，卡片/面板保持纯白 → 层次来自明度差，不靠描边
   ========================================================================== */

:root {
  --bg: #f5f6f8;          /* 页面底色：冷调米灰 */
  --bg-soft: #ffffff;     /* 原本的"浅色区块"改纯白，形成明暗交替 */
  --bg-warm: #fafaf7;     /* 暖白，用于强调区 */
  --card: #ffffff;
}

body { background: var(--bg); }

/* 区块节奏：透明（米灰）/ 纯白 交替 */
.section { background: transparent; }
.section-soft {
  background: #ffffff;
  border-top: 1px solid #eceff3;
  border-bottom: 1px solid #eceff3;
}
.section-warm { background: #fafaf7; }

/* 独立的白色条带（关键词 / 品牌） */
.keywords, .brands { background: #ffffff; }
.brands { border-color: #eceff3; }

/* 卡片在米灰底上不再需要重描边，靠明度差 */
.p-card, .cat-card, .case-card, .art-card, .contact-card,
.flow-step, .assure-item, .form-card, .cta .container {
  background: #fff;
  border-color: #e8ecf1;
}

/* 卡片阴影略微加深，因为底色变深了 */
.p-card:hover, .cat-card:hover, .case-card:hover, .art-card:hover, .contact-card:hover {
  box-shadow: 0 14px 34px -20px rgba(13, 21, 32, .26);
}

/* CTA 卡片在米灰底上更明显 */
.cta .container { box-shadow: 0 20px 50px -30px rgba(13, 21, 32, .3); }

/* 正文区纸张感：极淡的内阴影，让大段文字不"飘" */
.prose {
  background: #fff;
  border: 1px solid #e8ecf1;
  border-radius: 14px;
  padding: 40px 44px;
  max-width: 900px;
}

/* 表格在白色纸张上更清晰 */
table.tbl { background: #fff; }
table.tbl tbody tr:nth-child(even) { background: #fafbfc; }

@media (max-width: 760px) {
  .prose { padding: 26px 20px; border-radius: 12px; }
}
/* ==========================================================================
   v8 暖调纸感：把底色从冷灰换成米黄，卡片同步微暖
   参考印刷品：纸不是纯白，墨不是纯黑
   ========================================================================== */

:root {
  --bg: #f7f5f1;          /* 纸张米黄 */
  --bg-soft: #fffdfa;     /* 暖白条带 */
  --bg-warm: #f2eee6;     /* 更暖的强调底 */
  --card: #fffdfa;
  --line: #e6e1d7;        /* 暖灰描边 */
  --line-soft: #f0ebe2;
  --ink-900: #171411;     /* 墨色略偏暖，不再是冷黑 */
  --ink-700: #2a2620;
  --ink-500: #4a443c;
  --ink-400: #6b6459;
  --ink-300: #9a9287;
}

body { background: var(--bg); }

/* 白色条带改成暖白 */
.section-soft, .keywords, .brands { background: var(--bg-soft); }
.section-soft { border-color: var(--line-soft); }

/* 卡片与纸张 */
.p-card, .cat-card, .case-card, .art-card, .contact-card,
.flow-step, .assure-item, .form-card, .cta .container, .prose,
table.tbl {
  background: var(--bg-soft);
  border-color: var(--line);
}

/* 表格 */
table.tbl th { background: #faf7f1; }
table.tbl tbody tr:nth-child(even) { background: #fdfbf7; }
table.tbl tbody tr:hover { background: #fdf6e9; }

/* 图片容器底色也调暖，避免灰白突兀 */
.p-thumb, .case-thumb { background: #f2ede4; }

/* 输入框 */
.field input, .field textarea, .field select, .search-inline input {
  background: var(--bg-soft);
  border-color: var(--line);
}

/* 选项/标签底色 */
.chip { background: var(--bg-soft); border-color: var(--line); }

/* CTA 卡片内光晕更暖 */
.cta .container::before {
  background:
    radial-gradient(560px 240px at 12% 0%, rgba(245, 158, 11, .09), transparent 65%),
    radial-gradient(520px 220px at 88% 100%, rgba(120, 90, 40, .05), transparent 65%);
}

/* 深色区块保持冷调，形成对比（纸与墨） */
.section-navy, .hero, .page-hero { color-scheme: dark; }
/* ==========================================================================
   v9 首屏实拍大图（原站 banner：电缆盘仓库）
   图片在上、深色渐变在下，保证白色标题始终可读
   ========================================================================== */

.hero {
  background-color: #0a1220;
  background-image:
    linear-gradient(180deg, rgba(7, 14, 25, .92) 0%, rgba(7, 14, 25, .72) 42%, rgba(7, 14, 25, .90) 100%),
    linear-gradient(90deg, rgba(7, 14, 25, .86) 0%, rgba(7, 14, 25, .35) 55%, rgba(7, 14, 25, .55) 100%),
    url("/assets/img/hero.jpg");
  background-size: cover, cover, cover;
  background-position: center center, center center, center 42%;
  background-repeat: no-repeat;
}

/* 网格纹理减弱，别再压一层灰 */
.hero::before { opacity: .5; }

/* 首屏内容左对齐留白更足 */
.hero-inner { padding: 120px 0 104px; }
.hero h1 { text-shadow: 0 2px 30px rgba(0, 0, 0, .55), 0 1px 2px rgba(0, 0, 0, .4); }
.hero-sub { text-shadow: 0 1px 14px rgba(0, 0, 0, .5); }

/* 首屏高度用视口单位更大气（小屏兜底） */
@media (min-height: 700px) {
  .hero { min-height: 560px; }
}

/* 底部承诺条压在图片上，加一点毛玻璃 */
.hero-strip {
  background: rgba(7, 14, 25, .55);
  backdrop-filter: blur(6px);
  border-top: 1px solid rgba(255, 255, 255, .1);
}

@media (max-width: 760px) {
  .hero { background-position: center center, center center, 62% center; }
  .hero-inner { padding: 82px 0 72px; }
}
/* ==========================================================================
   v10 首屏轮播
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  background: #0a1220;
  min-height: 560px;
  display: flex;
  flex-direction: column;
}
.hero::before { opacity: .35; }

.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover;
  background-position: center 44%;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 1.1s ease;
  will-change: opacity;
}
.hero-bg.is-active {
  opacity: 1;
  animation: kenburns 9s ease-out both;
}
@keyframes kenburns {
  from { transform: scale(1.03); }
  to   { transform: scale(1.09); }
}

.hero-veil {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(90deg, rgba(7,14,25,.90) 0%, rgba(7,14,25,.58) 48%, rgba(7,14,25,.40) 100%),
    linear-gradient(180deg, rgba(7,14,25,.70) 0%, rgba(7,14,25,.10) 34%, rgba(7,14,25,.78) 100%);
}

.hero-inner { position: relative; z-index: 2; flex: 1 0 auto; display: flex; flex-direction: column; justify-content: center; }
.hero-strip { position: relative; z-index: 2; margin-top: auto; }
.hero h1 { text-shadow: 0 2px 30px rgba(0,0,0,.55), 0 1px 2px rgba(0,0,0,.45); }
.hero-sub { text-shadow: 0 1px 14px rgba(0,0,0,.55); }
.hero-badge { backdrop-filter: blur(4px); }

/* 箭头 */
.hero-arrow {
  position: absolute; top: 42%; transform: translateY(-50%); z-index: 3;
  width: 46px; height: 46px; border-radius: 50%; padding: 0;
  display: grid; place-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.22);
  color: #fff; font-size: 22px; line-height: 1; cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.hero-arrow:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.4); }
.hero-arrow.prev { left: 26px; }
.hero-arrow.next { right: 26px; }

/* 圆点 */
.hero-dots {
  position: absolute; left: 50%; bottom: 104px; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 9px;
}
.hero-dot {
  width: 26px; height: 3px; padding: 0; border: 0; border-radius: 2px;
  background: rgba(255,255,255,.3); cursor: pointer;
  transition: background .25s var(--ease), width .25s var(--ease);
}
.hero-dot:hover { background: rgba(255,255,255,.55); }
.hero-dot.is-active { background: var(--orange); width: 34px; }

@media (max-width: 760px) {
  .hero { min-height: 520px; }
  .hero-arrow { display: none; }
  .hero-dots { bottom: 88px; }
  .hero-bg { background-position: 62% center; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-bg.is-active { animation: none; }
  .hero-bg { transition: none; }
}