/* ==========================================================================
   尧图网站定制 - 全站基础样式
   风格：户外拓展风 · 军绿 + 卡其 + 正红
   布局：侧边战术信息栏常驻置顶 + 主内容独立区块重点凸显
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  /* 军绿系（主色，户外拓展） */
  --army: #3D5A3D;
  --army-deep: #2D442D;
  --army-light: #5A7B5A;
  --army-mist: #7A9A7A;
  --army-ink: #1F331F;

  /* 卡其系 */
  --khaki: #C4B08A;
  --khaki-light: #DDD0B5;
  --khaki-deep: #A8956D;
  --khaki-soft: #F0EADB;

  /* 正红系（提亮点缀） */
  --red: #C41E3A;
  --red-deep: #9E1730;
  --red-light: #E0425C;
  --red-soft: #F5D0D7;

  /* 中性 */
  --canvas: #F5F1E8;
  --canvas-2: #EDE7D6;
  --canvas-3: #E4DCC7;
  --ink: #232C23;
  --body: #4A554A;
  --muted: #8A958A;
  --line: #D6CDB8;
  --white: #ffffff;

  /* 阴影（硬朗战术风） */
  --shadow-sm: 0 3px 10px rgba(45, 68, 45, 0.08);
  --shadow-md: 0 8px 24px rgba(45, 68, 45, 0.14);
  --shadow-lg: 0 18px 48px rgba(45, 68, 45, 0.20);
  --shadow-red: 0 10px 30px rgba(196, 30, 58, 0.25);

  /* 圆角（战术硬边小圆角） */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* 布局尺寸 */
  --side-w: 320px;
  --main-max: 1280px;

  /* 字体 */
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-en: "Impact", "Arial Black", sans-serif;
}

/* ---------- 重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  color: var(--body);
  background: var(--canvas);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(196, 176, 138, 0.03) 2px,
      rgba(196, 176, 138, 0.03) 4px
    ),
    radial-gradient(circle at 8% 12%, rgba(61, 90, 61, 0.10) 0%, transparent 38%),
    radial-gradient(circle at 92% 88%, rgba(196, 30, 58, 0.06) 0%, transparent 40%);
  background-attachment: fixed;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
}

a {
  color: var(--army-deep);
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease;
}

a:hover {
  color: var(--red);
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.3px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background: var(--red);
  color: var(--white);
}

/* ==========================================================================
   布局：侧边战术信息栏 + 主内容
   ========================================================================== */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- 侧边战术信息栏（常驻置顶） ---------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--side-w);
  height: 100vh;
  background:
    linear-gradient(180deg, rgba(45, 68, 45, 0.97) 0%, rgba(31, 51, 31, 0.98) 100%);
  border-right: 3px solid var(--red);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
}

.sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red) 0%, var(--khaki) 50%, var(--army) 100%);
}

.sidebar::-webkit-scrollbar {
  width: 5px;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--army-light);
  border-radius: 4px;
}

.side-brand {
  padding: 34px 28px 24px;
  border-bottom: 1px dashed rgba(196, 176, 138, 0.25);
  position: relative;
}

.side-brand::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 28px;
  right: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--red), transparent);
}

.side-brand .logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.side-brand .logo-mark {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  border: 2px solid var(--khaki);
  border-radius: var(--r-sm);
  padding: 4px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.side-brand .logo-text {
  display: flex;
  flex-direction: column;
}

.side-brand .logo-text strong {
  font-size: 20px;
  color: var(--khaki-light);
  letter-spacing: 1.5px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.side-brand .logo-text span {
  font-size: 10px;
  color: var(--army-mist);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-family: var(--font-en);
  margin-top: 3px;
}

.side-brand .brand-slogan {
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--khaki);
  line-height: 1.8;
  padding: 12px 14px;
  background: rgba(196, 176, 138, 0.08);
  border-left: 3px solid var(--red);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

/* ---------- 侧边导航 ---------- */
.side-nav {
  padding: 18px 16px;
  flex: 1;
}

.nav-label {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--army-mist);
  text-transform: uppercase;
  padding: 0 12px 10px;
  font-family: var(--font-en);
  border-bottom: 1px solid rgba(196, 176, 138, 0.12);
  margin-bottom: 8px;
}

.side-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  color: var(--khaki-light);
  font-size: 14.5px;
  border-radius: var(--r-sm);
  margin-bottom: 2px;
  position: relative;
  transition: all 0.25s ease;
}

.side-nav a .en {
  font-size: 10px;
  color: var(--army-mist);
  letter-spacing: 1.5px;
  font-family: var(--font-en);
  text-transform: uppercase;
  opacity: 0.75;
}

.side-nav a:hover {
  background: rgba(196, 30, 58, 0.12);
  color: var(--white);
  padding-left: 20px;
}

.side-nav a:hover::before {
  content: "▶";
  position: absolute;
  left: 4px;
  font-size: 9px;
  color: var(--red);
}

.side-nav a.active {
  background: linear-gradient(90deg, rgba(196, 30, 58, 0.25) 0%, rgba(196, 30, 58, 0.08) 100%);
  color: var(--white);
  border-left: 3px solid var(--red);
  padding-left: 17px;
  box-shadow: inset 0 0 0 1px rgba(196, 30, 58, 0.3);
}

.side-nav a.active .en {
  color: var(--red-light);
  opacity: 1;
}

.has-sub > a::after {
  content: "▸";
  font-size: 11px;
  color: var(--army-mist);
  transition: transform 0.25s ease;
}

.has-sub.open > a::after {
  transform: rotate(90deg);
  color: var(--red);
}

.sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding-left: 12px;
}

.has-sub.open .sub {
  max-height: 800px;
}

.sub a {
  font-size: 13px;
  padding: 8px 12px 8px 22px;
  color: var(--army-mist);
  border-left: 1px dashed rgba(196, 176, 138, 0.18);
  margin-left: 8px;
  border-radius: 0;
}

.sub a::before {
  content: "◇";
  position: absolute;
  left: 0;
  font-size: 8px;
  color: var(--khaki);
}

.sub a:hover {
  color: var(--khaki-light);
  background: rgba(196, 176, 138, 0.06);
  padding-left: 28px;
}

.sub a:hover::before {
  content: "◆";
  color: var(--red);
}

/* ---------- 侧边底部 ---------- */
.side-foot {
  padding: 22px 24px 28px;
  border-top: 1px dashed rgba(196, 176, 138, 0.22);
  background: rgba(0, 0, 0, 0.18);
}

.hot-line {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--army-mist);
  text-transform: uppercase;
  font-family: var(--font-en);
}

.hot-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--khaki-light);
  letter-spacing: 1px;
  margin: 6px 0 14px;
  font-family: var(--font-en);
  text-shadow: 0 0 12px rgba(196, 30, 58, 0.3);
}

.side-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-deep) 100%);
  color: var(--white) !important;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--r-sm);
  letter-spacing: 1px;
  box-shadow: var(--shadow-red);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.side-cta::before {
  content: "★";
  margin-right: 8px;
  color: var(--khaki);
}

.side-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(196, 30, 58, 0.35);
}

.side-meta {
  margin-top: 16px;
  font-size: 12px;
  color: var(--army-mist);
  line-height: 1.9;
}

/* ---------- 遮罩（移动端） ---------- */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* ==========================================================================
   主内容区
   ========================================================================== */
.main {
  margin-left: var(--side-w);
  flex: 1;
  min-width: 0;
}

.container {
  max-width: var(--main-max);
  margin: 0 auto;
  padding: 0 36px;
}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 62px;
  background: linear-gradient(180deg, var(--army-deep) 0%, rgba(45, 68, 45, 0.95) 100%);
  z-index: 80;
  padding: 0 18px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--red);
}

.m-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--khaki-light);
  font-weight: 600;
  font-size: 15px;
}

.m-logo img {
  width: 36px;
  height: 36px;
  border: 1px solid var(--khaki);
  border-radius: var(--r-sm);
  padding: 2px;
  background: var(--white);
}

.hamburger {
  width: 38px;
  height: 38px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid rgba(196, 176, 138, 0.3);
  border-radius: var(--r-sm);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--khaki-light);
  transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--red);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--red);
}

/* ==========================================================================
   通用 Section & 标题
   ========================================================================== */
.section {
  padding: 84px 0;
  position: relative;
}

.section.tight {
  padding: 50px 0;
}

.section.bg-army {
  background:
    linear-gradient(180deg, rgba(61, 90, 61, 0.06) 0%, rgba(61, 90, 61, 0.02) 100%);
}

.section.bg-khaki {
  background:
    linear-gradient(135deg, var(--khaki-soft) 0%, var(--canvas-2) 100%);
}

.section.bg-dark {
  background: linear-gradient(180deg, var(--army-deep) 0%, var(--army-ink) 100%);
  color: var(--khaki-light);
}

.section.bg-dark h2,
.section.bg-dark h3,
.section.bg-dark h4 {
  color: var(--white);
}

.sec-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px;
}

.eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--red);
  text-transform: uppercase;
  font-family: var(--font-en);
  font-weight: 700;
  padding: 6px 16px;
  border: 1px solid rgba(196, 30, 58, 0.25);
  border-radius: var(--r-pill);
  background: rgba(196, 30, 58, 0.06);
  margin-bottom: 18px;
}

.sec-head h2 {
  font-size: 36px;
  margin-bottom: 14px;
  line-height: 1.2;
}

.sec-head h2 .accent {
  color: var(--red);
  position: relative;
}

.sec-head h2 .accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--red), transparent);
  border-radius: 2px;
}

.sec-head p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--r-sm);
  letter-spacing: 0.8px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--army-deep) 0%, var(--army) 100%);
  color: var(--white);
  border-color: var(--army);
  box-shadow: 0 6px 18px rgba(45, 68, 45, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--army) 0%, var(--army-light) 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(45, 68, 45, 0.35);
  color: var(--white);
}

.btn-red {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-deep) 100%);
  color: var(--white);
  border-color: var(--red);
  box-shadow: var(--shadow-red);
}

.btn-red:hover {
  background: linear-gradient(135deg, var(--red-light) 0%, var(--red) 100%);
  transform: translateY(-2px);
  color: var(--white);
}

.btn-khaki {
  background: linear-gradient(135deg, var(--khaki) 0%, var(--khaki-deep) 100%);
  color: var(--army-ink);
  border-color: var(--khaki);
}

.btn-khaki:hover {
  background: linear-gradient(135deg, var(--khaki-light) 0%, var(--khaki) 100%);
  transform: translateY(-2px);
  color: var(--army-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--army-deep);
  border-color: var(--army);
}

.btn-ghost:hover {
  background: var(--army-deep);
  color: var(--white);
  border-color: var(--army-deep);
  transform: translateY(-2px);
}

/* ==========================================================================
   Hero 全屏横幅
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(31, 51, 31, 0.82) 0%, rgba(45, 68, 45, 0.68) 45%, rgba(31, 51, 31, 0.88) 100%);
  z-index: 1;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(196, 30, 58, 0.04) 40px,
      rgba(196, 30, 58, 0.04) 80px
    );
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 100px 36px 80px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(196, 30, 58, 0.18);
  border: 1px solid rgba(196, 30, 58, 0.5);
  border-radius: var(--r-pill);
  color: var(--khaki-light);
  font-size: 13px;
  letter-spacing: 1.2px;
  margin-bottom: 28px;
  backdrop-filter: blur(6px);
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(196, 30, 58, 0.08); }
}

.hero h1 {
  font-size: 58px;
  line-height: 1.12;
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.hero h1 .accent {
  color: var(--khaki);
  position: relative;
  display: inline-block;
}

.hero h1 .accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--khaki));
  border-radius: 2px;
  transform: skewX(-12deg);
}

.hero-sub {
  font-size: 18px;
  color: rgba(221, 208, 181, 0.92);
  line-height: 1.9;
  max-width: 640px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 760px;
}

.stat {
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(196, 176, 138, 0.2);
  border-radius: var(--r-md);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--red);
}

.stat strong {
  display: block;
  font-size: 32px;
  color: var(--khaki-light);
  font-family: var(--font-en);
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.stat span {
  font-size: 12.5px;
  color: var(--army-mist);
  letter-spacing: 0.8px;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--khaki);
  font-size: 10px;
  letter-spacing: 4px;
  font-family: var(--font-en);
}

.mouse {
  width: 22px;
  height: 36px;
  border: 2px solid var(--khaki);
  border-radius: 11px;
  position: relative;
}

.mouse::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--red);
  border-radius: 2px;
  animation: mouseDown 1.6s ease-in-out infinite;
}

@keyframes mouseDown {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 20px; }
}

/* ==========================================================================
   页面头部（内页）
   ========================================================================== */
.page-hero {
  padding: 120px 0 70px;
  background:
    linear-gradient(135deg, var(--army-deep) 0%, var(--army) 60%, var(--army-ink) 100%);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      30deg,
      transparent,
      transparent 60px,
      rgba(196, 30, 58, 0.05) 60px,
      rgba(196, 30, 58, 0.05) 120px
    );
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--khaki), var(--army-light));
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero .eyebrow {
  border-color: rgba(196, 176, 138, 0.3);
  background: rgba(196, 176, 138, 0.08);
  color: var(--khaki);
}

.page-hero h1 {
  font-size: 44px;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}

.page-hero p {
  font-size: 16px;
  color: var(--khaki);
  max-width: 620px;
  line-height: 1.9;
  opacity: 0.9;
}

/* breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 36px;
  padding: 12px 18px;
  background: var(--canvas-2);
  border-left: 3px solid var(--red);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.breadcrumb a {
  color: var(--army-deep);
}

.breadcrumb a:hover {
  color: var(--red);
}

.breadcrumb .current {
  color: var(--army-ink);
  font-weight: 600;
}

/* ==========================================================================
   滚动渐入动画
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }
.reveal.d5 { transition-delay: 0.4s; }
.reveal.d6 { transition-delay: 0.48s; }

/* ==========================================================================
   返回顶部
   ========================================================================== */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--army-deep), var(--army));
  color: var(--white);
  border-radius: 50%;
  border: 2px solid var(--khaki);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.back-top:hover {
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  transform: translateY(-3px);
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-foot {
  background:
    linear-gradient(180deg, var(--army-ink) 0%, #162216 100%);
  color: var(--army-mist);
  padding: 70px 0 0;
  border-top: 4px solid var(--red);
  position: relative;
}

.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--khaki), transparent);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px dashed rgba(196, 176, 138, 0.15);
}

.foot-col h4 {
  font-size: 16px;
  color: var(--khaki-light);
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(196, 30, 58, 0.3);
  position: relative;
  display: inline-block;
}

.foot-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 36px;
  height: 2px;
  background: var(--red);
}

.foot-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.foot-brand img {
  width: 42px;
  height: 42px;
  background: var(--white);
  padding: 3px;
  border-radius: var(--r-sm);
  border: 1px solid var(--khaki);
}

.foot-brand strong {
  color: var(--khaki-light);
  font-size: 18px;
  letter-spacing: 1px;
}

.foot-col p {
  font-size: 13px;
  line-height: 1.95;
  color: var(--army-mist);
}

.foot-col ul li {
  padding: 6px 0;
  font-size: 13.5px;
}

.foot-col ul li a {
  color: var(--army-mist);
  transition: all 0.2s ease;
  padding-left: 0;
  position: relative;
}

.foot-col ul li a::before {
  content: "▸";
  color: var(--red);
  margin-right: 6px;
  font-size: 10px;
}

.foot-col ul li a:hover {
  color: var(--khaki-light);
  padding-left: 6px;
}

.foot-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0 !important;
}

.foot-contact li svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.foot-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12.5px;
  color: var(--army-mist);
}

.foot-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.foot-links a {
  color: var(--army-mist);
}

.foot-links a:hover {
  color: var(--khaki-light);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  :root {
    --side-w: 280px;
  }
  .hero h1 { font-size: 46px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.35s ease;
  }
  .sidebar.show {
    transform: translateX(0);
  }
  .main {
    margin-left: 0;
  }
  .mobile-bar {
    display: flex;
  }
  .hero {
    min-height: 90vh;
    padding-top: 62px;
  }
  .hero-inner {
    padding: 60px 20px 40px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .container { padding: 0 20px; }
  .section { padding: 60px 0; }
  .sec-head { margin-bottom: 40px; }
  .sec-head h2 { font-size: 26px; }
  .page-hero { padding: 100px 0 50px; }
  .page-hero h1 { font-size: 30px; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .foot-bottom { flex-direction: column; text-align: center; }
  .stat strong { font-size: 26px; }
}

@media (max-width: 560px) {
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat { padding: 14px; }
  .hero h1 { font-size: 28px; }
  .sec-head h2 { font-size: 22px; }
}