/* ==========================================================================
   莘县祥安机械租赁有限公司 — 设计系统
   基调：石墨深蓝 + 工程安全黄 + 祥云蓝
   ========================================================================== */

:root {
  /* 品牌色 */
  --ink-900: #080E16;
  --ink-800: #0C1420;
  --ink-700: #131E2C;
  --ink-600: #1B2A3D;
  --ink-500: #2A3B50;

  --amber-500: #F7B500;
  --amber-400: #FFC629;
  --amber-600: #D99C00;

  --sky-500: #1E7BD6;
  --sky-400: #4A9BE8;
  --sky-200: #BEDCF7;

  /* 中性 */
  --paper: #FFFFFF;
  --paper-alt: #F4F6F9;
  --paper-alt2: #EAEEF3;
  --line: #DEE4EB;
  --line-strong: #C7D0DA;

  --text-900: #0E1824;
  --text-700: #31404F;
  --text-500: #5B6B7C;
  --text-300: #8A98A6;

  --on-dark: #FFFFFF;
  --on-dark-soft: #C5D2DF;
  --on-dark-mute: #8FA1B4;

  /* 版式 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑",
               "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-num: "Bahnschrift", "DIN Alternate", "Helvetica Neue", Arial, var(--font-sans);

  /* 尺度 */
  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 40px);
  --nav-h: 74px;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(14, 24, 36, .06), 0 2px 8px rgba(14, 24, 36, .05);
  --shadow-md: 0 2px 6px rgba(14, 24, 36, .07), 0 12px 28px rgba(14, 24, 36, .09);
  --shadow-lg: 0 4px 12px rgba(14, 24, 36, .08), 0 24px 56px rgba(14, 24, 36, .14);

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

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-700);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

h1, h2, h3, h4 {
  color: var(--text-900);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -.01em;
}

a { color: inherit; text-decoration: none; }

img, svg, video { display: block; max-width: 100%; }
img { height: auto; background: var(--paper-alt2); }

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 3px solid var(--sky-500);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 布局基元 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(56px, 8vw, 104px); }
.section--tight { padding-block: clamp(44px, 6vw, 72px); }
.section--alt { background: var(--paper-alt); }

.section--dark {
  background: var(--ink-800);
  color: var(--on-dark-soft);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--on-dark); }

.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 3000;
  padding: 10px 18px;
  background: var(--amber-500);
  color: var(--ink-900);
  font-weight: 700;
  border-radius: var(--r-sm);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 版式组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber-600);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  border-radius: 2px;
  background: var(--amber-500);
}
.section--dark .eyebrow { color: var(--amber-400); }

.section-head { max-width: 760px; margin-bottom: clamp(32px, 4.5vw, 52px); }
.section-head--split {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.section-head--split > div { max-width: 760px; }

.section-title { font-size: clamp(26px, 3.6vw, 40px); }
.section-title .hl { color: var(--amber-600); }
.section--dark .section-title .hl { color: var(--amber-400); }

.section-lede {
  margin-top: 16px;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--text-500);
  max-width: 68ch;
}
.section--dark .section-lede { color: var(--on-dark-mute); }

.prose p + p { margin-top: 16px; }
.prose strong { color: var(--text-900); font-weight: 700; }
.section--dark .prose strong { color: var(--on-dark); }

/* 危险警示斜纹 —— 取自吊车配重块，作为品牌视觉母题 */
.hazard-rule {
  height: 8px;
  background: repeating-linear-gradient(
    -45deg,
    var(--amber-500) 0 12px,
    var(--ink-800) 12px 24px
  );
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 50px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15.5px;
  font-weight: 800;
  letter-spacing: .01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .18s var(--ease), background .18s var(--ease),
              box-shadow .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--primary {
  background: var(--amber-500);
  color: var(--ink-900);
  box-shadow: 0 4px 14px rgba(247, 181, 0, .34);
}
.btn--primary:hover { background: var(--amber-400); box-shadow: 0 8px 22px rgba(247, 181, 0, .42); }

.btn--ghost {
  border-color: rgba(255, 255, 255, .34);
  color: var(--on-dark);
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .6); }

.btn--outline { border-color: var(--line-strong); color: var(--text-900); background: var(--paper); }
.btn--outline:hover { border-color: var(--ink-800); box-shadow: var(--shadow-md); }

.btn--dark { background: var(--ink-800); color: var(--on-dark); }
.btn--dark:hover { background: var(--ink-600); box-shadow: var(--shadow-md); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 800;
  font-size: 15px;
  color: var(--sky-500);
}
.link-arrow::after {
  content: "→";
  transition: transform .2s var(--ease);
}
.link-arrow:hover::after { transform: translateX(5px); }
.section--dark .link-arrow { color: var(--amber-400); }

/* ---------- 导航 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 17, 27, .92);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--nav-h);
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand__mark { width: 42px; height: 42px; border-radius: 11px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.brand__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--amber-400);
  text-transform: uppercase;
}

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__list a {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 15px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  color: var(--on-dark-soft);
  transition: color .18s var(--ease), background .18s var(--ease);
}
.nav__list a:hover { color: #fff; background: rgba(255, 255, 255, .09); }
.nav__list a[aria-current="page"] { color: var(--amber-400); background: rgba(247, 181, 0, .12); }

.masthead__cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  padding: 7px 16px 7px 13px;
  border-radius: var(--r-sm);
  background: var(--amber-500);
  color: var(--ink-900);
  transition: background .18s var(--ease), transform .18s var(--ease);
}
.masthead__cta:hover { background: var(--amber-400); transform: translateY(-1px); }
.masthead__cta svg { width: 19px; height: 19px; flex: none; }
.masthead__cta span { display: block; font-size: 10.5px; font-weight: 700; letter-spacing: .12em; opacity: .72; }
.masthead__cta strong { display: block; font-family: var(--font-num); font-size: 16px; font-weight: 700; letter-spacing: .02em; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .05);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  border-radius: 2px;
  background: #fff;
  transition: transform .24s var(--ease), opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  min-height: clamp(540px, 82vh, 780px);
  padding-block: clamp(60px, 9vw, 104px);
  background: var(--ink-900);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 58%;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(100deg, rgba(6, 12, 20, .95) 0%, rgba(6, 12, 20, .84) 38%, rgba(6, 12, 20, .38) 72%, rgba(6, 12, 20, .55) 100%),
    linear-gradient(180deg, rgba(6, 12, 20, .55) 0%, transparent 32%);
}

.hero__inner { width: 100%; }
.hero__copy { max-width: 780px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 10px;
  margin-bottom: 22px;
  border: 1px solid rgba(247, 181, 0, .38);
  border-radius: 100px;
  background: rgba(247, 181, 0, .1);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--amber-400);
  letter-spacing: .02em;
}
.hero__badge b {
  padding: 2px 9px;
  border-radius: 100px;
  background: var(--amber-500);
  color: var(--ink-900);
  font-size: 12px;
  font-weight: 800;
}

.hero h1 {
  font-size: clamp(32px, 5.4vw, 60px);
  line-height: 1.14;
  color: #fff;
  letter-spacing: -.02em;
  text-wrap: balance;
}
.hero h1 .hl {
  color: var(--amber-400);
  font-family: var(--font-num);
  font-weight: 800;
  letter-spacing: 0;
}

.hero__lede {
  margin-top: 22px;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.8vw, 19px);
  color: var(--on-dark-soft);
}

.hero .btn-row { margin-top: 34px; }

.hero__note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--on-dark-mute);
}
.hero__note svg { width: 17px; height: 17px; color: var(--amber-400); flex: none; }

/* 首屏数据条 */
.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: -1px;
  background: var(--ink-700);
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.hero-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.hero-stats__item {
  padding: 26px 8px 26px 0;
  border-right: 1px solid rgba(255, 255, 255, .08);
}
.hero-stats__item:last-child { border-right: 0; }
.hero-stats__item:not(:first-child) { padding-left: 28px; }

.hero-stats__num {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-family: var(--font-num);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: #fff;
  letter-spacing: -.01em;
}
.hero-stats__num i {
  font-style: normal;
  font-size: .5em;
  font-weight: 700;
  color: var(--amber-400);
}
.hero-stats__label {
  margin-top: 9px;
  font-size: 13.5px;
  color: var(--on-dark-mute);
  line-height: 1.5;
}

/* ---------- 页面头（内页） ---------- */
.pagehead {
  position: relative;
  isolation: isolate;
  padding-block: clamp(52px, 7vw, 88px);
  background: var(--ink-800);
  overflow: hidden;
}
.pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(95deg, rgba(8, 14, 22, .96) 12%, rgba(8, 14, 22, .72) 62%, rgba(8, 14, 22, .5) 100%);
}
.pagehead__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.pagehead__media img { width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }
.pagehead h1 {
  font-size: clamp(28px, 4.4vw, 46px);
  color: #fff;
  letter-spacing: -.02em;
}
.pagehead p {
  margin-top: 16px;
  max-width: 64ch;
  font-size: clamp(15px, 1.7vw, 17.5px);
  color: var(--on-dark-soft);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 13.5px;
  color: var(--on-dark-mute);
}
.crumbs a { color: var(--on-dark-mute); transition: color .18s var(--ease); }
.crumbs a:hover { color: var(--amber-400); }
.crumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; opacity: .45; }
.crumbs [aria-current="page"] { color: var(--on-dark-soft); }

/* ---------- 服务卡 ---------- */
.card-grid { display: grid; gap: 22px; }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.svc-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.svc-card:hover {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}

.svc-card__media { position: relative; overflow: hidden; aspect-ratio: 16 / 11; background: var(--ink-700); }
.svc-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .55s var(--ease);
}
.svc-card:hover .svc-card__media img { transform: scale(1.06); }

.svc-card__num {
  position: absolute;
  left: 0; bottom: 0;
  padding: 6px 14px;
  background: var(--amber-500);
  color: var(--ink-900);
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  border-top-right-radius: var(--r-sm);
}

.svc-card__body { display: flex; flex-direction: column; flex: 1; padding: 22px 22px 24px; }
.svc-card__body h3 { font-size: 20px; margin-bottom: 10px; }
.svc-card__body p { font-size: 14.5px; color: var(--text-500); }

.tick-list { margin-top: 14px; display: grid; gap: 8px; }
.tick-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--text-500);
}
.tick-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--amber-500);
  transform: rotate(45deg);
}

.svc-card .link-arrow { margin-top: auto; padding-top: 18px; }

/* ---------- 吨位矩阵 ---------- */
.tonnage {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: 10px;
}
.tonnage__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 78px;
  padding: 10px 6px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .045);
  transition: background .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease);
}
.tonnage__cell:hover {
  background: rgba(247, 181, 0, .12);
  border-color: rgba(247, 181, 0, .46);
  transform: translateY(-3px);
}
.tonnage__cell b {
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
}
.tonnage__cell span { font-size: 12px; color: var(--on-dark-mute); }
.tonnage__cell--hero {
  background: var(--amber-500);
  border-color: var(--amber-500);
}
.tonnage__cell--hero b { color: var(--ink-900); }
.tonnage__cell--hero span { color: rgba(12, 20, 32, .72); font-weight: 700; }
.tonnage__cell--hero:hover { background: var(--amber-400); border-color: var(--amber-400); }

/* ---------- 设备展示 ---------- */
.rig-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }

.rig {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: 380px;
  padding: 28px;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--ink-700);
}
.rig--tall { min-height: 460px; }
.rig__media { position: absolute; inset: 0; z-index: -2; }
.rig__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .7s var(--ease);
}
.rig:hover .rig__media img { transform: scale(1.05); }
.rig::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(8, 14, 22, .12) 30%, rgba(8, 14, 22, .82) 82%, rgba(8, 14, 22, .94) 100%);
}
.rig__tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  margin-bottom: 12px;
  border-radius: var(--r-sm);
  background: var(--amber-500);
  color: var(--ink-900);
  font-family: var(--font-num);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .04em;
}
.rig h3 { font-size: clamp(19px, 2.2vw, 24px); color: #fff; margin-bottom: 8px; }
.rig p { font-size: 14.5px; color: var(--on-dark-soft); max-width: 46ch; }

.spec-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.spec-row span {
  padding: 4px 11px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 100px;
  background: rgba(255, 255, 255, .08);
  font-size: 12.5px;
  color: #fff;
  backdrop-filter: blur(3px);
}

/* ---------- 流程 ---------- */
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: flow;
}
.flow__step {
  position: relative;
  padding: 26px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  counter-increment: flow;
  transition: transform .26s var(--ease), box-shadow .26s var(--ease);
}
.flow__step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.flow__step::before {
  content: "0" counter(flow);
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber-500);
}
.flow__step h3 { font-size: 17.5px; margin-bottom: 8px; }
.flow__step p { font-size: 14.5px; color: var(--text-500); }
.section--dark .flow__step {
  background: rgba(255, 255, 255, .04);
  border-color: rgba(255, 255, 255, .1);
}
.section--dark .flow__step p { color: var(--on-dark-mute); }

/* ---------- 优势 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  padding: 28px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform .26s var(--ease), box-shadow .26s var(--ease);
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature__icon {
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  margin-bottom: 18px;
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(247, 181, 0, .2), rgba(247, 181, 0, .08));
  color: var(--amber-600);
}
.feature__icon svg { width: 25px; height: 25px; }
.feature h3 { font-size: 18px; margin-bottom: 9px; }
.feature p { font-size: 14.5px; color: var(--text-500); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.case {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.case:hover { transform: translateY(-5px); border-color: transparent; box-shadow: var(--shadow-lg); }
.case__media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--ink-700); }
.case__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s var(--ease); }
.case:hover .case__media img { transform: scale(1.06); }
.case__chip {
  position: absolute;
  top: 12px; left: 12px;
  padding: 4px 11px;
  border-radius: var(--r-sm);
  background: rgba(8, 14, 22, .82);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  backdrop-filter: blur(4px);
}
.case__body { padding: 18px 20px 22px; }
.case__body h3 { font-size: 17px; margin-bottom: 7px; }
.case__body p { font-size: 14px; color: var(--text-500); }

/* ---------- 关于/图文 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.split--wide-left { grid-template-columns: 1.15fr .85fr; }
.split--wide-right { grid-template-columns: .85fr 1.15fr; }
.split__media img {
  width: 100%;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
}
.split__media--frame {
  padding: 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}
.split__media--frame img { box-shadow: none; border-radius: var(--r-md); }

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.fact { padding: 18px 20px; background: var(--paper); }
.fact dt { font-size: 12.5px; color: var(--text-300); letter-spacing: .06em; }
.fact dd {
  margin-top: 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-900);
}

.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--paper);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-900);
}
.badge svg { width: 16px; height: 16px; color: var(--amber-600); flex: none; }

/* ---------- 合作单位 ---------- */
.partners {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--r-md);
  overflow: hidden;
}
.partners li {
  display: grid;
  place-items: center;
  min-height: 84px;
  padding: 16px 12px;
  background: var(--ink-700);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--on-dark-soft);
  text-align: center;
  transition: background .22s var(--ease), color .22s var(--ease);
}
.partners li:hover { background: var(--ink-600); color: #fff; }

/* ---------- 常见问题 ---------- */
.faq { max-width: 860px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-900);
  cursor: pointer;
  list-style: none;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  flex: none;
  width: 22px; height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  background-color: var(--paper-alt2);
  background-image: linear-gradient(var(--text-700), var(--text-700)), linear-gradient(var(--text-700), var(--text-700));
  background-size: 11px 2px, 2px 11px;
  background-position: center, center;
  background-repeat: no-repeat;
  transition: transform .26s var(--ease), background-color .2s var(--ease);
}
.faq__item[open] summary::after {
  transform: rotate(135deg);
  background-color: var(--amber-500);
}
.faq__item summary:hover { color: var(--amber-600); }
.faq__answer { padding-bottom: 24px; font-size: 15px; color: var(--text-500); max-width: 72ch; }

/* ---------- 号召行动 ---------- */
.cta-band {
  position: relative;
  isolation: isolate;
  padding-block: clamp(52px, 7vw, 84px);
  background: var(--ink-800);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(760px 380px at 88% 12%, rgba(30, 123, 214, .26), transparent 68%),
    radial-gradient(620px 360px at 8% 92%, rgba(247, 181, 0, .16), transparent 66%);
}
.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(24px, 3.2vw, 36px); color: #fff; }
.cta-band p { margin-top: 12px; max-width: 58ch; color: var(--on-dark-soft); font-size: 16px; }

.phone-stack { display: flex; flex-wrap: wrap; gap: 14px; }
.phone-card {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 22px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .06);
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.phone-card:hover {
  background: rgba(247, 181, 0, .14);
  border-color: rgba(247, 181, 0, .5);
  transform: translateY(-3px);
}
.phone-card svg { width: 26px; height: 26px; color: var(--amber-400); flex: none; }
.phone-card small { display: block; font-size: 12.5px; color: var(--on-dark-mute); }
.phone-card b {
  display: block;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
}

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 56px); }

.contact-list { display: grid; gap: 14px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.tel {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--text-900);
  letter-spacing: .02em;
  border-bottom: 1px solid var(--amber-500);
  transition: color .18s var(--ease);
}
.tel:hover { color: var(--amber-600); }

.contact-item__icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  flex: none;
  border-radius: 12px;
  background: rgba(247, 181, 0, .14);
  color: var(--amber-600);
}
.contact-item__icon svg { width: 21px; height: 21px; }
.contact-item h3 { font-size: 15px; margin-bottom: 5px; }
.contact-item p, .contact-item a { font-size: 15.5px; color: var(--text-500); }
.contact-item a:hover { color: var(--amber-600); }
.contact-item .tel {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-900);
  letter-spacing: .02em;
  border-bottom: 0;
}
.contact-item .tel:hover { color: var(--amber-600); }

.qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 30px;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.qr-panel img {
  width: 186px; height: 186px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
}
.qr-panel h3 { font-size: 17px; }
.qr-panel p { font-size: 14px; color: var(--text-500); }

/* ---------- 页脚 ---------- */
.footer {
  padding-block: clamp(44px, 6vw, 68px) 0;
  background: var(--ink-900);
  color: var(--on-dark-mute);
  font-size: 14.5px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer h2, .footer h3 { color: #fff; }
.footer h3 {
  font-size: 14px;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: var(--amber-400);
}
.footer__about { max-width: 38ch; margin-top: 16px; line-height: 1.8; }
.footer__links { display: grid; gap: 11px; }
.footer__links a { transition: color .18s var(--ease); }
.footer__links a:hover { color: var(--amber-400); }
.footer .brand__name { font-size: 17px; }

.footer__tel {
  display: block;
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  margin-bottom: 8px;
  transition: color .18s var(--ease);
}
.footer__tel:hover { color: var(--amber-400); }

.footer__qr { width: 104px; height: 104px; padding: 6px; border-radius: var(--r-sm); background: #fff; margin-top: 14px; }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-block: 22px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 13.5px;
  color: var(--on-dark-mute);
}
.footer__bottom a:hover { color: var(--amber-400); }
.footer__seo {
  padding-bottom: 22px;
  font-size: 12.5px;
  line-height: 1.9;
  color: #5F7085;
}
.footer__seo a { color: #5F7085; }
.footer__seo a:hover { color: var(--on-dark-mute); }

/* ---------- 移动端快捷呼叫栏 ---------- */
.callbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 1200;
  display: none;
  border-top: 1px solid rgba(255, 255, 255, .12);
  background: rgba(10, 17, 27, .97);
  backdrop-filter: blur(12px);
  padding-bottom: env(safe-area-inset-bottom);
}
.callbar__inner { display: grid; grid-template-columns: 1fr 1fr; }
.callbar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 56px;
  font-size: 15.5px;
  font-weight: 800;
  color: #fff;
}
.callbar a svg { width: 19px; height: 19px; flex: none; }
.callbar a:first-child { background: var(--amber-500); color: var(--ink-900); }

/* ---------- 桌面悬浮联系 ---------- */
.dock {
  position: fixed;
  right: 18px;
  bottom: 24px;
  z-index: 1100;
  display: grid;
  gap: 9px;
}
.dock__btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  color: var(--text-700);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.dock__btn:hover { background: var(--amber-500); color: var(--ink-900); border-color: var(--amber-500); transform: translateY(-2px); }
.dock__btn svg { width: 21px; height: 21px; }
.dock__pop {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  padding: 12px;
  border-radius: var(--r-md);
  background: var(--paper);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
  white-space: nowrap;
}
.dock__btn:hover .dock__pop,
.dock__btn:focus-visible .dock__pop { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.dock__pop img { width: 132px; height: 132px; border-radius: var(--r-sm); }
.dock__pop b {
  display: block;
  font-family: var(--font-num);
  font-size: 17px;
  color: var(--text-900);
  text-align: center;
}
.dock__pop small { display: block; margin-top: 5px; font-size: 12px; color: var(--text-500); text-align: center; }
.dock__top { opacity: 0; visibility: hidden; transition: opacity .25s var(--ease), visibility .25s; }
.dock__top.is-on { opacity: 1; visibility: visible; }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ---------- 规格表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}
.spec-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 15px;
}
.spec-table caption {
  padding: 18px 22px 0;
  text-align: left;
  font-size: 13px;
  color: var(--text-500);
}
.spec-table th,
.spec-table td {
  padding: 15px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.spec-table thead th {
  position: sticky;
  top: 0;
  background: var(--ink-700);
  color: var(--on-dark);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  white-space: nowrap;
  border-bottom: 0;
}
.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr { transition: background .18s var(--ease); }
.spec-table tbody tr:hover { background: var(--paper-alt); }
.spec-table tbody th {
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  color: var(--text-900);
  white-space: nowrap;
}
.spec-table tbody th small {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-500);
  margin-left: 3px;
}
.spec-table td { color: var(--text-700); }
.spec-table tr.is-flag { background: rgba(247, 181, 0, .07); }
.spec-table tr.is-flag:hover { background: rgba(247, 181, 0, .12); }
.spec-table tr.is-flag th { color: var(--amber-600); }
.tag-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--paper-alt2);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-700);
  white-space: nowrap;
}
tr.is-flag .tag-pill { background: var(--amber-500); color: var(--ink-800); }
/* 键值对表：左列为字段名而非吨位数字 */
.spec-table--kv { min-width: 520px; }
.spec-table--kv tbody th {
  width: 32%;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-500);
  letter-spacing: .02em;
  background: var(--paper-alt);
  white-space: normal;
}
.spec-table--kv tbody td { color: var(--text-900); font-weight: 500; }

.table-note {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--text-500);
  line-height: 1.8;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 900px) {
  :root { --nav-h: 64px; }

  .nav-toggle { display: block; }
  .masthead__cta { display: none; }

  .nav {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    margin: 0;
    padding: 10px var(--gutter) 20px;
    background: rgba(10, 17, 27, .985);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav__list a { height: 50px; padding-inline: 14px; font-size: 16px; }

  .hero { min-height: 0; padding-block: clamp(48px, 11vw, 80px); }
  .hero-stats__grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats__item { padding: 20px 8px 20px 0; }
  .hero-stats__item:nth-child(2n) { border-right: 0; }
  .hero-stats__item:nth-child(n + 3) { border-top: 1px solid rgba(255, 255, 255, .08); }
  .hero-stats__item:nth-child(2n+1) { padding-left: 0; }
  .hero-stats__item:nth-child(2n) { padding-left: 22px; }

  .rig-grid { grid-template-columns: 1fr; }
  .case-grid, .feature-grid, .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .split, .split--wide-left, .split--wide-right, .contact-grid { grid-template-columns: 1fr; }
  .split__media { order: -1; }

  body { padding-bottom: 56px; }
  .callbar { display: block; }
  .dock { bottom: 74px; right: 14px; }
  .dock__btn { width: 44px; height: 44px; }
}

@media (max-width: 620px) {
  .card-grid--4, .card-grid--3, .card-grid--2,
  .case-grid, .feature-grid, .flow { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 30px; }
  .section-head--split { display: block; }
  .section-head--split .btn { margin-top: 22px; }
  .btn { width: 100%; }
  .btn-row { display: grid; }
  .phone-stack { display: grid; width: 100%; }
  .fact-grid { grid-template-columns: 1fr; }
  .tonnage { grid-template-columns: repeat(3, 1fr); }
  .qr-panel img { width: 160px; height: 160px; }
  .brand__tag { display: none; }
  .dock { display: none; }
}

@media print {
  .masthead, .callbar, .dock, .cta-band, .hero__media { display: none !important; }
  body { color: #000; }
}