/* ==========================================================================
   福建省坤秀建设工程有限公司 — 企业宣传站设计系统 v2
   配色源自企业 Logo：主橙 #FF8C1A + 墨黑 #12100E + 暖灰中性色
   风格：正式、方正、工程感。直角矩形，无药丸无椭圆，宽度自适应铺满。
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 主色：取自 Logo 橙色 */
  --orange-700: #C96A08;
  --orange-600: #E87A0C;
  --orange-500: #FF8C1A;
  --orange-400: #FFA449;
  --orange-200: #FFD9B0;
  --orange-100: #FFEEDC;
  --orange-050: #FFF6EC;

  /* 墨色：取自 Logo 黑色，略带暖调 */
  --ink-900: #12100E;
  --ink-850: #1C1917;
  --ink-800: #262220;
  --ink-700: #3D3733;
  --ink-600: #564E48;
  --ink-500: #746A62;
  --ink-400: #9A9089;
  --ink-300: #BFB6AF;
  --ink-200: #DFD8D2;

  /* 线条与背景 */
  --line: #E8E2DC;
  --line-strong: #D6CCC4;
  --line-soft: #F2EDE8;
  --bg: #FFFFFF;
  --bg-soft: #FAF8F6;
  --bg-warm: #F6F1EC;
  --bg-deep: #12100E;

  /* 字体 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC",
          "Noto Sans CJK SC", "WenQuanYi Micro Hei", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, sans-serif;
  --font-num: "Helvetica Neue", Arial, "DIN Alternate", "Microsoft YaHei", sans-serif;

  --container: 1360px;
  --gutter: clamp(20px, 4vw, 64px);
  --sec-y: clamp(64px, 7vw, 118px);

  /* 阴影：多层叠加，更接近真实材质 */
  --shadow-xs: 0 1px 2px rgba(18, 16, 14, .05);
  --shadow-sm: 0 2px 8px rgba(18, 16, 14, .06), 0 1px 2px rgba(18, 16, 14, .04);
  --shadow-md: 0 6px 20px rgba(18, 16, 14, .08), 0 2px 6px rgba(18, 16, 14, .04);
  --shadow-lg: 0 16px 44px rgba(18, 16, 14, .12), 0 4px 12px rgba(18, 16, 14, .05);
  --shadow-xl: 0 28px 70px rgba(18, 16, 14, .16), 0 8px 20px rgba(18, 16, 14, .06);
  --shadow-brand: 0 10px 30px rgba(232, 122, 12, .24);

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-600);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-feature-settings: "tnum" 0;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-900);
  letter-spacing: -.005em;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
button { font-family: inherit; border: 0; background: none; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
strong, b { font-weight: 700; color: var(--ink-800); }

::selection { background: var(--orange-500); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-soft); }
::-webkit-scrollbar-thumb { background: var(--ink-300); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-400); }

/* ---------- 3. 布局骨架 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: 1680px; }

.section { padding-block: var(--sec-y); position: relative; }
.section--soft { background: var(--bg-soft); }
.section--warm { background: var(--bg-warm); }
.section--deep { background: var(--bg-deep); color: #b9b0a9; }
.section--deep h2, .section--deep h3 { color: #fff; }

.grid { display: grid; gap: clamp(20px, 2.2vw, 30px); }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1040px) {
  .g-3, .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .g-2, .g-3, .g-4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 4. 章节标题 ---------- */
.sec-head { margin-bottom: clamp(34px, 3.6vw, 58px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange-600);
  margin-bottom: 16px;
  font-family: var(--font-num);
}
/* 呼应 logo 的立方体分割：菱形方块 + 细线 */
.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--orange-500);
  flex: none;
  transform: rotate(45deg);
}
.eyebrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--orange-200);
  flex: none;
}
.section--deep .eyebrow { color: var(--orange-400); }
.section--deep .eyebrow::after { background: rgba(255, 140, 26, .35); }

.sec-title {
  font-size: clamp(26px, 3.2vw, 40px);
  letter-spacing: -.015em;
  margin-bottom: 16px;
  line-height: 1.24;
  position: relative;
  padding-left: 22px;
}
/* 标题前的橙色竖条，呼应 logo 立方体的竖向分割 */
.sec-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .14em;
  bottom: .14em;
  width: 3px;
  background: linear-gradient(var(--orange-500), var(--orange-200));
}
.sec-sub {
  font-size: clamp(14.5px, 1.15vw, 16.5px);
  color: var(--ink-500);
  max-width: 840px;
  line-height: 1.9;
}
.section--deep .sec-sub { color: #a89e96; }

.sec-head--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 34px;
  flex-wrap: wrap;
}
.sec-head--split .sec-head { margin-bottom: 0; flex: 1 1 540px; }

/* ---------- 5. 顶部信息条 ---------- */
.topbar {
  background: var(--ink-900);
  color: #8d837b;
  font-size: 12.5px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 40px;
  flex-wrap: wrap;
}
.topbar__list { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; }
.topbar__item svg { width: 13px; height: 13px; flex: none; opacity: .75; }
.topbar__item a { color: #b8ada5; font-weight: 500; }
.topbar__item a:hover { color: var(--orange-400); }
/* 左侧资质标签：品牌橙高亮 */
.topbar__tag {
  color: var(--orange-500);
  font-weight: 600;
  letter-spacing: .06em;
  position: relative;
  padding-left: 16px;
}
.topbar__tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  background: var(--orange-500);
  transform: translateY(-50%) rotate(45deg);
}
@media (max-width: 940px) { .topbar { display: none; } }

/* ---------- 6. 主导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.header.is-stuck { box-shadow: var(--shadow-sm); }
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 78px;
}

/* --- Logo 组合 --- */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
  min-width: 0;
}
.brand__logo {
  width: 50px;
  height: 42px;
  flex: none;
  display: block;
}
.brand__logo img { width: 100%; height: 100%; object-fit: contain; }
.brand__text { display: flex; flex-direction: column; line-height: 1.28; min-width: 0; }
.brand__name {
  font-size: 18.5px;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: .04em;
  white-space: nowrap;
}
.brand__en {
  font-size: 9.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-400);
  font-family: var(--font-num);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav { display: flex; align-items: center; gap: 2px; }
.nav__link {
  position: relative;
  padding: 27px 17px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-600);
  white-space: nowrap;
  transition: color .25s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 17px;
  right: 17px;
  bottom: 0;
  height: 2px;
  background: var(--orange-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .32s var(--ease-out);
}
.nav__link:hover { color: var(--ink-900); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--ink-900); font-weight: 700; }

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  background: var(--orange-500);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--orange-500);
  transition: all .26s var(--ease);
  flex: none;
}
.header__cta:hover {
  background: var(--orange-600);
  border-color: var(--orange-600);
  box-shadow: var(--shadow-brand);
}
.header__cta svg { width: 14px; height: 14px; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  place-items: center;
  flex: none;
  background: #fff;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink-900);
  position: relative;
  transition: background .2s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--ink-900);
  transition: transform .3s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1120px) {
  .nav-toggle { display: grid; }
  .header__cta { display: none; }
  .nav {
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s var(--ease-out);
  }
  .nav.is-open { max-height: 70vh; overflow-y: auto; }
  .nav__link { padding: 16px var(--gutter); border-bottom: 1px solid var(--line-soft); }
  .nav__link::after { display: none; }
  .nav__link.is-active { background: var(--orange-050); border-left: 3px solid var(--orange-500); }
}

@media (max-width: 640px) {
  .header__inner { gap: 12px; min-height: 66px; }
  .brand { gap: 9px; }
  .brand__logo { width: 36px; height: 36px; }
  .brand__name { font-size: 15px; letter-spacing: .02em; }
  .brand__en { font-size: 8px; letter-spacing: .1em; }
  .nav { top: 66px; }
  .nav-toggle { width: 40px; height: 40px; }
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 30px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .28s var(--ease);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn svg { width: 15px; height: 15px; flex: none; }
.btn--primary { background: var(--ink-900); color: #fff; border-color: var(--ink-900); }
.btn--primary:hover { background: #000; border-color: #000; box-shadow: var(--shadow-lg); }
.btn--brand { background: var(--orange-500); color: #fff; border-color: var(--orange-500); }
.btn--brand:hover { background: var(--orange-600); border-color: var(--orange-600); box-shadow: var(--shadow-brand); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn--outline { background: #fff; color: var(--ink-800); border-color: var(--line-strong); }
.btn--outline:hover { border-color: var(--ink-900); background: var(--ink-900); color: #fff; }
.btn--sm { padding: 10px 20px; font-size: 14px; }

/* ---------- 8. 首页主视觉 ---------- */
.hero {
  position: relative;
  min-height: clamp(580px, 80vh, 820px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--ink-900);
}
.hero__bg { position: absolute; inset: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
/* 主视觉渐变：左侧压暗保证文字对比，右侧留出画面感 */
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(14, 12, 11, .97) 0%, rgba(14, 12, 11, .90) 34%, rgba(14, 12, 11, .55) 68%, rgba(14, 12, 11, .30) 100%),
    linear-gradient(to top, rgba(14, 12, 11, .88) 0%, rgba(14, 12, 11, 0) 38%);
}
/* 品牌橙调光晕 */
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 52% 78% at 80% 46%, rgba(255, 140, 26, .30), transparent 66%),
    radial-gradient(ellipse 40% 60% at 6% 88%, rgba(255, 140, 26, .13), transparent 68%);
  z-index: 1;
}
/* 细网格纹理，增加工程质感 */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 4;
  width: 100%;
  padding-block: clamp(72px, 10vw, 132px);
}
.hero__content { max-width: 820px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(255, 140, 26, .5);
  color: var(--orange-400);
  font-size: 12.5px;
  letter-spacing: .1em;
  background: rgba(255, 140, 26, .1);
  margin-bottom: 30px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.hero__badge::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--orange-500);
  flex: none;
  transform: rotate(45deg);
}
.hero__title {
  font-size: clamp(30px, 5vw, 60px);
  line-height: 1.16;
  color: #fff;
  letter-spacing: .01em;
  margin-bottom: 26px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .4);
}
.hero__title em {
  font-style: normal;
  color: var(--orange-500);
  position: relative;
}
.hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 8px;
  background: rgba(255, 140, 26, .22);
  z-index: -1;
}
.hero__text {
  font-size: clamp(15px, 1.35vw, 18px);
  color: #c4bcb5;
  max-width: 680px;
  line-height: 1.95;
  margin-bottom: 42px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero 内的 logo 印记：保留品牌橙 */
.hero__logo {
  position: absolute;
  right: clamp(20px, 5vw, 90px);
  bottom: clamp(96px, 13vw, 150px);
  width: clamp(130px, 15vw, 210px);
  opacity: .18;
  z-index: 2;
  pointer-events: none;
}

.hero__strip {
  position: relative;
  z-index: 4;
  background: #fff;
  border-top: 3px solid var(--orange-500);
  box-shadow: var(--shadow-md);
}
/* 数据条通栏均分，不受正文容器宽度限制 */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
}
@media (max-width: 1040px) { .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.hero__stat {
  position: relative;
  padding: 30px clamp(16px, 2.4vw, 40px);
  border-right: 1px solid var(--line);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}
.hero__stat:last-child { border-right: 0; }
/* 悬停时顶部橙色标记居中展开 */
.hero__stat::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 0;
  height: 3px;
  background: var(--orange-500);
  transform: translateX(-50%);
  transition: width .5s var(--ease-out);
}
.hero__stat:hover::before { width: 44px; }
@media (max-width: 1040px) {
  .hero__stat:nth-child(2n) { border-right: 0; }
  .hero__stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .hero__stat { border-right: 1px solid var(--line) !important; border-bottom: 1px solid var(--line); }
  .hero__stat:nth-child(2n) { border-right: 0 !important; }
  .hero__stat:nth-last-child(-n+2) { border-bottom: 0; }
}
.hero__stat-value {
  font-family: var(--font-num);
  font-size: clamp(30px, 3.2vw, 46px);
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.hero__stat-value small {
  font-size: .5em;
  font-weight: 600;
  color: var(--orange-600);
  margin-left: 4px;
  white-space: nowrap;
  letter-spacing: 0;
}
.hero__stat-label {
  font-size: 14px;
  color: var(--ink-700);
  font-weight: 600;
  margin-top: 10px;
  letter-spacing: .01em;
}
.hero__stat-note {
  font-size: 12.5px;
  color: var(--ink-400);
  margin-top: 4px;
  line-height: 1.6;
  /* 统一注释行高，避免长短不一造成视觉参差 */
  min-height: 2.4em;
}

/* ---------- 9. 内页页头 ---------- */
.pagehead {
  position: relative;
  background: var(--ink-900);
  color: #fff;
  overflow: hidden;
}
.pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 62% 110% at 86% 46%, rgba(255, 140, 26, .18), transparent 66%);
}
.pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(18, 16, 14, .97) 18%, rgba(18, 16, 14, .5));
}
.pagehead__inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(56px, 7vw, 100px);
}
.crumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: #7d736c;
  margin-bottom: 20px;
}
.crumb a:hover { color: var(--orange-400); }
.crumb span { color: rgba(255, 255, 255, .22); }
.pagehead__title {
  font-size: clamp(27px, 4vw, 46px);
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: .01em;
}
.pagehead__sub {
  font-size: clamp(14.5px, 1.15vw, 16.5px);
  color: #a89e96;
  max-width: 780px;
  line-height: 1.9;
}
/* 页头 logo 印记：保留品牌橙，压低整体不透明度 */
.pagehead__logo {
  position: absolute;
  right: clamp(24px, 6vw, 110px);
  bottom: -10px;
  width: clamp(160px, 19vw, 260px);
  opacity: .17;
  z-index: 1;
  pointer-events: none;
}

/* ---------- 10. 企业简介 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: clamp(34px, 5vw, 78px);
  align-items: center;
}
@media (max-width: 940px) { .about-grid { grid-template-columns: minmax(0, 1fr); } }

.about-media { position: relative; }
.about-media__img { width: 100%; border: 1px solid var(--line); }
.about-media__badge {
  position: absolute;
  right: -1px;
  bottom: -1px;
  background: var(--ink-900);
  color: #fff;
  padding: 24px 30px;
  border-top: 3px solid var(--orange-500);
  text-align: left;
  min-width: 172px;
}
.about-media__badge b {
  display: block;
  font-family: var(--font-num);
  font-size: 42px;
  line-height: 1;
  color: var(--orange-500);
  font-weight: 700;
  letter-spacing: -.02em;
}
.about-media__badge span { font-size: 12.5px; color: #b3aaa3; letter-spacing: .05em; margin-top: 5px; display: block; }

.about-text p { margin-bottom: 18px; color: var(--ink-500); font-size: 16px; line-height: 1.9; }

.about-list { margin-top: 30px; border-top: 1px solid var(--line); }
.about-list__row {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  align-items: baseline;
}
.about-list__row dt { color: var(--ink-400); font-size: 14px; }
.about-list__row dd { margin: 0; color: var(--ink-800); font-weight: 600; line-height: 1.7; }

/* ---------- 11. 优势卡片 ---------- */
.adv-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 34px 30px 32px;
  transition: border-color .32s var(--ease), box-shadow .32s var(--ease), transform .32s var(--ease-out);
  overflow: hidden;
}
/* 顶部橙色细线，悬停时展开 */
.adv-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--orange-500);
  transition: width .45s var(--ease-out);
}
.adv-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.adv-card:hover::before { width: 100%; }
.adv-card__no {
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--orange-600);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.adv-card__no::after {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--orange-200);
}
.adv-card__title {
  font-size: 19px;
  margin-bottom: 13px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-soft);
  letter-spacing: -.005em;
}
.adv-card__text { font-size: 14.5px; color: var(--ink-500); line-height: 1.9; }

/* ---------- 12. 业务板块 ---------- */
.biz-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: box-shadow .4s var(--ease), transform .4s var(--ease-out);
}
.biz-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.biz-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--ink-100, #eee);
}
.biz-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease-out);
}
.biz-card:hover .biz-card__media img { transform: scale(1.06); }
/* 底部渐变 + 序号 */
.biz-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(18, 16, 14, .78) 0%, rgba(18, 16, 14, .12) 40%, transparent 65%);
}
.biz-card__no {
  position: absolute;
  bottom: 14px;
  left: 18px;
  z-index: 2;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 30px;
  color: var(--orange-500);
  line-height: 1;
  letter-spacing: -.02em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .4);
}
.biz-card__body { padding: 28px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.biz-card__title { font-size: 20.5px; margin-bottom: 5px; letter-spacing: -.008em; }
.biz-card__en {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange-600);
  margin-bottom: 15px;
  font-weight: 600;
}
.biz-card__desc { font-size: 14.5px; color: var(--ink-500); line-height: 1.9; margin-bottom: 20px; }
.biz-card__points { margin-top: auto; display: grid; gap: 10px; }
.biz-card__points li {
  position: relative;
  padding-left: 19px;
  font-size: 14px;
  color: var(--ink-600);
}
.biz-card__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--orange-500);
  transform: rotate(45deg);
}

/* ---------- 13. 资质表 ---------- */
.qual-table { border: 1px solid var(--line); background: #fff; overflow: hidden; }
.qual-table thead th {
  background: var(--ink-900);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  text-align: left;
  padding: 16px 20px;
  letter-spacing: .05em;
  white-space: nowrap;
  position: relative;
}
.qual-table thead th + th::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, .16);
}
.qual-table tbody td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
  vertical-align: middle;
}
.qual-table tbody tr:last-child td { border-bottom: 0; }
.qual-table tbody tr { transition: background .2s var(--ease); }
.qual-table tbody tr:hover { background: var(--orange-050); }
.qual-table__name { font-weight: 600; color: var(--ink-900); }
.qual-table__level {
  display: inline-block;
  padding: 4px 13px;
  font-size: 12.5px;
  font-weight: 700;
  background: var(--orange-100);
  color: var(--orange-700);
  border: 1px solid var(--orange-200);
  white-space: nowrap;
}
.qual-table__level--l1 { background: var(--ink-900); color: var(--orange-400); border-color: var(--ink-900); }
.qual-table__no { font-family: var(--font-num); color: var(--ink-500); font-size: 13.5px; letter-spacing: .02em; }
.qual-table__org { color: var(--ink-500); font-size: 13.5px; }
.qual-table__date { color: var(--ink-500); font-size: 13.5px; white-space: nowrap; font-variant-numeric: tabular-nums; }

.qual-cards { display: none; }
@media (max-width: 900px) {
  .qual-table { display: none; }
  .qual-cards { display: grid; gap: 14px; }
  .qual-card { border: 1px solid var(--line); background: #fff; padding: 20px; }
  .qual-card__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 13px; }
  .qual-card__name { font-weight: 600; color: var(--ink-900); font-size: 16px; }
  .qual-card__meta { display: grid; gap: 7px; font-size: 13px; color: var(--ink-500); }
  .qual-card__meta span { display: flex; gap: 10px; }
  .qual-card__meta b { color: var(--ink-400); font-weight: 400; flex: none; width: 56px; }
}

/* ---------- 14. 案例 ---------- */
.filter-bar {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  background: #fff;
  margin-bottom: 30px;
}
.filter-btn {
  padding: 13px 24px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-500);
  border-right: 1px solid var(--line);
  transition: all .25s var(--ease);
  position: relative;
}
.filter-btn:last-child { border-right: 0; }
.filter-btn:hover { color: var(--ink-900); background: var(--orange-050); }
.filter-btn.is-active { background: var(--ink-900); color: #fff; font-weight: 600; }
.filter-btn.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--orange-500);
}

.case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  padding: 30px 28px;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease-out);
  overflow: hidden;
}
/* 左侧色条 */
.case-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange-500);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s var(--ease-out);
}
.case-card:hover {
  border-color: var(--orange-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.case-card:hover::before { transform: scaleY(1); }
.case-card.is-hidden { display: none; }
.case-card__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 15px;
}
.case-card__type {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--orange-700);
  border: 1px solid var(--orange-200);
  background: var(--orange-050);
  padding: 4px 12px;
  white-space: nowrap;
}
.case-card__year {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--ink-300);
  font-weight: 700;
  letter-spacing: .04em;
}
.case-card__title {
  font-size: 17.5px;
  line-height: 1.55;
  margin-bottom: 11px;
  color: var(--ink-900);
  letter-spacing: -.005em;
}
.case-card__client {
  font-size: 13.5px;
  color: var(--ink-500);
  padding-bottom: 15px;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.case-card__client svg { width: 14px; height: 14px; color: var(--orange-500); flex: none; }
.case-card__desc { font-size: 14px; color: var(--ink-500); line-height: 1.85; margin-bottom: 18px; flex: 1; }
.case-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}
.case-card__amount {
  font-family: var(--font-num);
  font-size: 23px;
  font-weight: 700;
  color: var(--orange-600);
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.case-card__amount small { font-size: 13px; font-weight: 600; color: var(--ink-400); }
.case-card__scale { font-size: 12.5px; color: var(--ink-400); text-align: right; }
/* 无金额时 scale 左对齐更自然 */
.case-card__foot--plain { justify-content: space-between; }
.case-card__foot--plain .case-card__scale { text-align: right; }
/* 年份置于原金额位置，作为底部主视觉 */
.case-card__year-big {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  position: relative;
  padding-left: 15px;
}
.case-card__year-big::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--orange-500);
  transform: translateY(-50%) rotate(45deg);
}

/* ---------- 15. 荣誉 ---------- */
.honor-list { display: grid; gap: 0; border-top: 1px solid rgba(255, 255, 255, .12); }
.honor-item {
  display: grid;
  grid-template-columns: 108px minmax(0, 1.55fr) minmax(0, 1.25fr) 96px;
  gap: 26px;
  align-items: center;
  padding: 24px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  transition: background .25s var(--ease), padding-left .28s var(--ease-out);
  position: relative;
}
/* 悬停时左侧滑出橙色标记 */
.honor-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background: var(--orange-500);
  transform: translateY(-50%);
  transition: height .35s var(--ease-out);
}
.honor-item:hover { background: rgba(255, 255, 255, .045); padding-left: 18px; }
.honor-item:hover::before { height: 60%; }
.honor-item__date {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--orange-500);
  font-weight: 700;
  letter-spacing: .03em;
  font-variant-numeric: tabular-nums;
}
.honor-item__name {
  font-size: 16px;
  color: #fff;
  font-weight: 500;
  line-height: 1.65;
  display: flex;
  align-items: flex-start;
  gap: 11px;
}
/* 菱形项目符号，呼应 logo 立方体 */
.honor-item__name::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--orange-500);
  transform: rotate(45deg);
  flex: none;
  margin-top: 9px;
  opacity: .85;
}
.honor-item__honor { font-size: 14px; color: #948b83; line-height: 1.75; }
.honor-item__level {
  font-size: 11.5px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 140, 26, .42);
  color: var(--orange-400);
  text-align: center;
  white-space: nowrap;
  font-weight: 600;
}
@media (max-width: 940px) {
  .honor-item { grid-template-columns: 1fr; gap: 9px; }
  .honor-item__level { justify-self: start; }
}

.honor-cards { display: grid; gap: 16px; }
.honor-card {
  border: 1px solid var(--line);
  background: #fff;
  padding: 26px 24px;
  border-left: 3px solid var(--orange-500);
}
.honor-card__date { font-family: var(--font-num); font-size: 13px; color: var(--orange-600); font-weight: 700; margin-bottom: 9px; }
.honor-card__name { font-size: 16px; font-weight: 600; color: var(--ink-900); margin-bottom: 9px; line-height: 1.6; }
.honor-card__honor { font-size: 14px; color: var(--ink-500); }
@media (min-width: 941px) { .honor-cards { display: none; } }

/* ---------- 16. 客户墙 ---------- */
.client-wall {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 1040px) { .client-wall { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 760px) { .client-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.client-item {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  min-height: 90px;
  display: grid;
  place-items: center;
  padding: 16px 14px;
  text-align: center;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-700);
  background: #fff;
  transition: background .25s var(--ease), color .25s var(--ease);
  position: relative;
}
.client-item::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--orange-500);
  transform: translateX(-50%);
  transition: width .4s var(--ease-out);
}
.client-item:hover { background: var(--orange-050); color: var(--ink-900); }
.client-item:hover::after { width: 36px; }
/* 悬停时右上角浮现菱形，呼应 logo */
.client-item::before {
  content: "";
  position: absolute;
  top: 10px;
  right: 10px;
  width: 5px;
  height: 5px;
  background: var(--orange-500);
  transform: rotate(45deg) scale(0);
  transition: transform .32s var(--ease-out);
}
.client-item:hover::before { transform: rotate(45deg) scale(1); }

/* ---------- 17. 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); position: relative; }
@media (max-width: 1140px) { .flow { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 34px; } }
@media (max-width: 680px) { .flow { grid-template-columns: minmax(0, 1fr); } }
.flow::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: var(--line-strong);
  z-index: 0;
}
@media (max-width: 1140px) { .flow::before { display: none; } }
.flow__item { position: relative; text-align: center; padding-inline: 8px; }
.flow__no {
  position: relative;
  z-index: 2;
  width: 54px;
  height: 54px;
  margin: 0 auto 20px;
  background: #fff;
  border: 2px solid var(--ink-900);
  color: var(--ink-900);
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 17px;
  transition: all .32s var(--ease-out);
  transform: rotate(45deg);
}
.flow__no > * { transform: rotate(-45deg); }
/* 菱形内的数字用伪元素承载，避免嵌套元素 */
.flow__no { font-size: 0; }
.flow__no::after {
  content: attr(data-no);
  transform: rotate(-45deg);
  font-size: 17px;
  font-family: var(--font-num);
  font-weight: 700;
}
.flow__item:hover .flow__no {
  background: var(--orange-500);
  border-color: var(--orange-500);
  color: #fff;
  transform: rotate(45deg) translateY(-3px);
  box-shadow: var(--shadow-brand);
}
.flow__title { font-size: 16.5px; margin-bottom: 10px; }
.flow__text { font-size: 13.5px; color: var(--ink-500); line-height: 1.85; }

/* ---------- 18. 发展历程 ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(var(--orange-500), var(--line));
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: #fff;
  border: 3px solid var(--orange-500);
  transform: rotate(45deg);
}
.tl-item__year {
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1;
  margin-bottom: 9px;
  letter-spacing: -.01em;
}
.tl-item__title { font-size: 16.5px; margin-bottom: 7px; }
.tl-item__text { font-size: 14px; color: var(--ink-500); line-height: 1.85; }

/* ---------- 19. 新闻 ---------- */
.news-list { border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 106px minmax(0, 1fr) 148px 22px;
  gap: 26px;
  align-items: center;
  padding: 26px 8px;
  border-bottom: 1px solid var(--line-soft);
  transition: background .25s var(--ease), padding-left .28s var(--ease-out);
}
.news-item:hover { background: var(--orange-050); padding-left: 16px; }
.news-item__date {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--ink-400);
  font-weight: 600;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}
.news-item__cat {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--orange-700);
  border: 1px solid var(--orange-200);
  background: var(--orange-050);
  padding: 3px 11px;
  margin-bottom: 9px;
}
.news-item__title {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-900);
  margin-bottom: 8px;
  line-height: 1.6;
  letter-spacing: -.005em;
}
.news-item__summary { display: block; font-size: 14px; color: var(--ink-500); line-height: 1.85; }
.news-item__src { font-size: 13px; color: var(--ink-400); text-align: right; line-height: 1.6; }
.news-item__arrow { color: var(--ink-300); transition: transform .28s var(--ease-out), color .28s var(--ease); }
.news-item:hover .news-item__arrow { color: var(--orange-500); transform: translateX(4px); }
.news-item__arrow svg { width: 18px; height: 18px; }
@media (max-width: 940px) {
  .news-item { grid-template-columns: 1fr; gap: 10px; }
  .news-item__src { text-align: left; }
  .news-item__arrow { display: none; }
}

/* ---------- 20. 联系 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}
@media (max-width: 940px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }

.contact-panel {
  background: var(--ink-900);
  color: #fff;
  padding: clamp(32px, 3.4vw, 48px);
  border-top: 3px solid var(--orange-500);
  position: relative;
  overflow: hidden;
}
.contact-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(255, 140, 26, .16), transparent 68%);
  pointer-events: none;
}
.contact-panel__title { color: #fff; font-size: 22px; margin-bottom: 9px; }
.contact-panel__sub { color: #948b83; font-size: 14.5px; margin-bottom: 32px; line-height: 1.85; }
.contact-list { display: grid; gap: 1px; background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .09); }
.contact-list__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 19px 20px;
  background: var(--ink-900);
  transition: background .25s var(--ease);
}
.contact-list__item:hover { background: #1c1917; }
.contact-list__icon { color: var(--orange-500); flex: none; margin-top: 3px; }
.contact-list__icon svg { width: 18px; height: 18px; }
.contact-list__label { font-size: 12px; color: #6f6660; letter-spacing: .08em; margin-bottom: 4px; text-transform: uppercase; }
.contact-list__value { font-size: 16px; color: #fff; font-weight: 500; line-height: 1.6; }
.contact-list__value a:hover { color: var(--orange-400); }

.map-frame {
  position: relative;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse 70% 60% at 50% 42%, rgba(255, 140, 26, .07), transparent 70%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(18, 16, 14, .045) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(18, 16, 14, .045) 39px 40px),
    var(--bg-soft);
  min-height: 350px;
  display: grid;
  place-items: center;
  padding: 40px;
  text-align: center;
  overflow: hidden;
}
/* 十字定位标记，呼应工程制图 */
.map-frame::before, .map-frame::after {
  content: "";
  position: absolute;
  background: rgba(255, 140, 26, .3);
}
.map-frame::before { left: 0; right: 0; top: 50%; height: 1px; }
.map-frame::after { top: 0; bottom: 0; left: 50%; width: 1px; }
.map-frame__inner { max-width: 430px; position: relative; z-index: 2; }
.map-frame__pin {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: var(--ink-900);
  color: var(--orange-500);
  display: grid;
  place-items: center;
  transform: rotate(45deg);
  box-shadow: var(--shadow-lg);
}
.map-frame__pin svg { width: 22px; height: 22px; transform: rotate(-45deg); }
.map-frame__title { font-size: 18px; margin-bottom: 9px; }
.map-frame__text { font-size: 14px; color: var(--ink-500); line-height: 1.85; margin-bottom: 24px; }

/* ---------- 21. CTA 条 ---------- */
.cta-band {
  position: relative;
  background: var(--ink-900);
  color: #fff;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, .028) 0 2px, transparent 2px 22px),
    radial-gradient(ellipse 55% 130% at 88% 0%, rgba(255, 140, 26, .22), transparent 66%);
}
.cta-band__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding-block: clamp(40px, 4.8vw, 68px);
  flex-wrap: wrap;
}
.cta-band__title { font-size: clamp(21px, 2.4vw, 31px); color: #fff; margin-bottom: 11px; }
.cta-band__text { color: #a89e96; font-size: 15px; max-width: 640px; line-height: 1.85; }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 22. 页脚 ---------- */
.footer { background: #0d0c0b; color: #6f6660; font-size: 14px; position: relative; overflow: hidden; }
/* 呼应主视觉的网格纹理 */
.footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}
.footer__top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 60px);
  padding-block: clamp(48px, 5.5vw, 82px);
}
@media (max-width: 940px) { .footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .footer__top { grid-template-columns: minmax(0, 1fr); } }
.footer__brand { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.footer__brand .brand__logo { width: 52px; height: 52px; }
.footer__brand .brand__name { color: #fff; font-size: 17px; }
.footer__brand .brand__en { color: #5d544e; }
.footer__desc { line-height: 1.95; margin-bottom: 24px; max-width: 420px; }
.footer__contact { display: grid; gap: 12px; }
.footer__contact li { display: flex; gap: 11px; align-items: flex-start; }
.footer__contact svg { width: 14px; height: 14px; color: var(--orange-500); flex: none; margin-top: 5px; }
.footer__contact a:hover { color: #fff; }
.footer__title {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  position: relative;
}
.footer__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 2px;
  background: var(--orange-500);
}
.footer__links { display: grid; gap: 12px; }
.footer__links a { color: #6f6660; font-size: 14px; }
.footer__links a:hover { color: var(--orange-400); padding-left: 5px; }
.footer__bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, .07);
  padding-block: 24px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: #564e48;
}
.footer__bottom a:hover { color: #fff; }
.footer__legal { max-width: 780px; line-height: 1.9; }
.footer__sep { color: #3d3631; margin: 0 4px; }
.footer__icp { color: #6f6660; transition: color .25s var(--ease); }
.footer__icp:hover { color: var(--orange-400); }
/* 页脚右下角 logo 印记 */
.footer__logo {
  position: absolute;
  right: clamp(16px, 4vw, 60px);
  bottom: 40px;
  width: 200px;
  opacity: .08;
  z-index: 0;
  pointer-events: none;
}

/* ---------- 23. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  background: var(--ink-900);
  color: #fff;
  display: grid;
  place-items: center;
  border: 1px solid var(--orange-500);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s var(--ease);
  z-index: 90;
}
.to-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--orange-500); border-color: var(--orange-500); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 24. 进场动画 ---------- */
/* 初始隐藏状态由 JS 施加 .can-reveal 类控制，
   若 JS 未执行或加载失败，元素保持可见，内容绝不丢失 */
[data-reveal].can-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .75s var(--ease-out), transform .75s var(--ease-out);
}
[data-reveal].can-reveal.is-in { opacity: 1; transform: none; }

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

/* ---------- 25. 杂项 ---------- */
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  color: var(--ink-500);
  background: #fff;
}
.note {
  font-size: 13px;
  color: var(--ink-400);
  line-height: 1.9;
  padding: 17px 22px;
  background: var(--bg-soft);
  border-left: 3px solid var(--orange-500);
}
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }
.mt-lg { margin-top: clamp(36px, 4vw, 60px); }
.text-center { text-align: center; }