/* ============================================================
   江湖聚合配送系统 - PC 官网专题页
   设计规范：1440 设计稿 · 响应式重排（PC / 平板 / 移动）
   ============================================================ */
:root {
  --navy: #0D1424;          /* 深墨蓝 - 主深色背景 */
  --navy-deep: #0B101E;     /* 页脚深底 */
  --navy-grad: #1F2942;     /* 深蓝渐变末端 */
  --orange: #FF6B00;        /* 主品牌橙 */
  --orange-bright: #FF7A1A; /* 高亮橙 */
  --orange-deep: #FF5C00;   /* 渐变末端橙 */
  --orange-soft: #FFF1E6;   /* 图标浅橙底 */
  --ink: #14181F;           /* 标题墨色 */
  --body: #5A6472;          /* 正文灰 */
  --muted: #7A8290;         /* 次要灰 */
  --faint: #AAB2BF;         /* 占位灰 */
  --bg-gray: #F6F7F9;       /* 灰底板块 */
  --line: #ECEFF3;          /* 分隔线 */
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow-card: 0 12px 32px rgba(13, 20, 36, 0.08);
  --shadow-cta: 0 8px 24px rgba(255, 107, 0, 0.35);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--body);
  background: #FFFFFF;
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { width: 1320px; max-width: 100%; margin: 0 auto; }

/* ---------- 通用 ---------- */
.section { padding: 100px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; }
.eyebrow .bar { width: 28px; height: 3px; border-radius: 2px; background: var(--orange); display: inline-block; }
.eyebrow .txt { font-size: 13px; font-weight: 700; letter-spacing: 0.02em; }
.sec-title { font-size: 38px; font-weight: 900; color: var(--ink); line-height: 1.3; letter-spacing: -0.01em; }
.sec-sub { font-size: 16px; color: var(--body); line-height: 1.8; }

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: 76px; background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-img { display: block; height: 46px; width: auto; }
.logo-img-light { display: none; }
.logo-img-dark { display: block; }
.nav-immersive:not(.is-scrolled) .logo-img-light { display: block; }
.nav-immersive:not(.is-scrolled) .logo-img-dark { display: none; }
.nav-immersive.is-scrolled .logo-img-light { display: none; }
.nav-immersive.is-scrolled .logo-img-dark { display: block; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--orange); display: flex; align-items: center; justify-content: center;
}
.logo-icon svg { width: 23px; height: 23px; }
.logo-name { font-size: 20px; font-weight: 900; color: var(--ink); letter-spacing: 0.01em; }
.logo-tag {
  font-size: 11px; font-weight: 500; color: var(--orange);
  background: var(--orange-soft); border-radius: 4px; padding: 4px 8px; margin-left: 4px;
}
.nav-links { display: flex; gap: 44px; }
.nav-links a { font-size: 15px; font-weight: 500; color: #4A5261; transition: color .2s; position: relative; }
.nav-links a:hover { color: var(--orange); }
.nav-cta {
  display: inline-block; font-size: 15px; font-weight: 500; color: #fff;
  background: var(--orange); border-radius: 8px; padding: 11px 26px;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.nav-cta:hover { background: var(--orange-deep); transform: translateY(-1px); box-shadow: var(--shadow-cta); }
.nav-burger { display: none; width: 40px; height: 40px; border: none; background: none; cursor: pointer; position: relative; }
.nav-burger span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px auto; border-radius: 2px; transition: .3s; }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 首页沉浸式导航：首屏透明，滚动后白底 */
.nav-immersive {
  position: fixed; left: 0; right: 0;
  background: transparent; border-bottom-color: transparent;
  backdrop-filter: none; -webkit-backdrop-filter: none;
  box-shadow: none;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
}
.nav-immersive .nav-links a { color: rgba(255,255,255,0.88); transition: color .2s; }
.nav-immersive .nav-links a:hover,
.nav-immersive .nav-links a.on { color: var(--orange-bright); }
.nav-immersive .nav-burger span { background: #fff; transition: background .3s ease; }
.nav-immersive.is-scrolled {
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(13, 20, 36, 0.06);
}
.nav-immersive.is-scrolled .nav-links a { color: #4A5261; }
.nav-immersive.is-scrolled .nav-links a:hover,
.nav-immersive.is-scrolled .nav-links a.on { color: var(--orange); }
.nav-immersive.is-scrolled .nav-burger span { background: var(--ink); }

/* ---------- Hero 首屏 ---------- */
.hero { position: relative; background: var(--navy); overflow: hidden; }
.hero-glow {
  position: absolute; top: -320px; right: -40px; width: 800px; height: 800px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,0,0.26) 0%, rgba(255,107,0,0) 68%);
  pointer-events: none;
}
.hero-inner { position: relative; display: flex; align-items: center; gap: 60px; padding: 100px 0; }
.hero-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 26px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  background: rgba(255,107,0,0.14); border-radius: 100px; padding: 7px 16px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange-bright); }
.hero-badge span { font-size: 13px; font-weight: 500; color: #FFA45C; }
.hero-title { font-size: 56px; font-weight: 900; color: #fff; line-height: 1.25; letter-spacing: -0.01em; }
.hero-title em { font-style: normal; color: var(--orange-bright); font-size: 26px; font-weight: 500; display: block; margin-top: 6px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 17px; font-weight: 700; border-radius: 10px; padding: 17px 32px;
  cursor: pointer; border: none; transition: transform .2s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-deep); transform: translateY(-2px); box-shadow: var(--shadow-cta); }
.btn-ghost { background: rgba(255,255,255,0.06); color: #E8ECF2; border: 1px solid rgba(255,255,255,0.16); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }
.hero-platforms { display: flex; flex-direction: column; gap: 12px; margin-top: 10px; }
.hero-platforms .label { font-size: 12px; font-weight: 500; color: #6B7484; }
.platform-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.platform-chips .chip {
  font-size: 13px; color: #C7CCD6; background: rgba(255,255,255,0.08);
  border-radius: 8px; padding: 8px 14px; line-height: 1;
}
.hero-visual { width: 560px; max-width: 100%; flex-shrink: 0; }
.hero-visual img { width: 100%; border-radius: 20px; box-shadow: 0 24px 60px rgba(0,0,0,0.4); }

/* ---------- 系统介绍 ---------- */
.about { background: #fff; }
.about-inner { display: flex; align-items: center; gap: 70px; }
.about-visual { width: 580px; max-width: 100%; flex-shrink: 0; }
.about-visual img { width: 100%; border-radius: 20px; box-shadow: var(--shadow-card); }
.about-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 26px; }
.about-copy .eyebrow .txt { color: var(--orange); }
.about-desc { font-size: 16px; color: var(--body); line-height: 1.9; }
.about-points { display: flex; flex-direction: column; gap: 20px; }
.point { display: flex; gap: 14px; align-items: flex-start; }
.point-icon {
  width: 42px; height: 42px; flex-shrink: 0; border-radius: 10px;
  background: var(--orange-soft); display: flex; align-items: center; justify-content: center;
}
.point-icon svg { width: 22px; height: 22px; }
.point-text { flex: 1; }
.point-text h4 { font-size: 16px; font-weight: 700; color: var(--ink); line-height: 1.5; }
.point-text p { font-size: 13px; color: var(--muted); margin-top: 3px; line-height: 1.6; }

/* ---------- 商业模式 ---------- */
.model { background: var(--navy); }
.model .sec-title { color: #fff; }
.model .sec-sub { color: #9AA3B2; }
.model-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 60px; }
.model .eyebrow .txt { color: var(--orange); }
.model-flow { display: flex; align-items: center; gap: 36px; }
.model-card {
  flex: 1; border-radius: 20px; padding: 36px;
  display: flex; flex-direction: column; gap: 24px;
}
.model-card.dark { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); }
.model-card.gradient {
  background: linear-gradient(135deg, #FF7A1A 0%, #FF5C00 100%);
  box-shadow: 0 16px 40px rgba(255,92,0,0.3);
}
.model-card-head { display: flex; align-items: center; gap: 12px; }
.model-card-head .icon {
  width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
}
.model-card.dark .icon { background: var(--orange); }
.model-card.gradient .icon { background: rgba(255,255,255,0.22); }
.model-card-head .icon svg { width: 22px; height: 22px; }
.model-card h3 { font-size: 21px; font-weight: 700; color: #fff; }
.model-card .desc { font-size: 13px; color: #8A94A5; line-height: 1.7; }
.model-card.gradient .desc { color: #FFE4CE; }
.model-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.model-tags .tag {
  font-size: 13px; color: #C7CCD6; background: rgba(255,255,255,0.09);
  border-radius: 10px; padding: 12px 18px; line-height: 1;
}
.model-value { display: flex; align-items: center; gap: 12px; font-size: 15px; font-weight: 500; color: #fff; }
.model-value svg { width: 26px; height: 26px; flex-shrink: 0; }
.model-transfer { width: 220px; flex-shrink: 0; display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.model-transfer .pill {
  font-size: 15px; font-weight: 700; color: #fff; background: var(--orange);
  border-radius: 100px; padding: 10px 22px; white-space: nowrap;
}
.model-transfer .arrow { color: #8A94A5; }
.model-transfer .arrow svg { width: 72px; height: 26px; }
.model-transfer p { font-size: 13px; color: #8A94A5; }

/* ---------- 创业场景（四大创业方向） ---------- */
.scenarios { background: var(--bg-gray); }
.scenarios .sec-title { font-size: 42px; }
.scenarios .sec-sub { font-size: 17px; }
.scenarios-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 40px; }
.scenarios .eyebrow .txt { color: var(--orange); }
.scenario-anchors { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 60px; }
.scenario-anchors .anchor {
  font-size: 13px; font-weight: 500; color: var(--orange);
  background: #fff; border: 1px solid #FFD9BE; border-radius: 100px;
  padding: 9px 18px; transition: all .2s; cursor: pointer;
}
.scenario-anchors .anchor:hover { background: var(--orange); color: #fff; border-color: var(--orange); }
.scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scenario-card {
  background: #fff; border-radius: 20px; overflow: hidden;
  box-shadow: var(--shadow-card); display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.scenario-card:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(13,20,36,0.13); }
.scenario-img { height: 208px; overflow: hidden; }
.scenario-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.scenario-card:hover .scenario-img img { transform: scale(1.04); }
.scenario-body { padding: 28px 28px 30px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.scenario-title-row { display: flex; align-items: center; gap: 12px; }
.scenario-num { font-size: 30px; font-weight: 900; color: var(--orange); line-height: 1; }
.scenario-title-row h3 { font-size: 21px; font-weight: 700; color: var(--ink); line-height: 1.4; }
.scenario-desc { font-size: 14px; color: var(--body); line-height: 1.75; }
.scenario-points { display: flex; flex-direction: column; gap: 9px; margin-top: 4px; }
.scenario-points li { display: flex; align-items: flex-start; gap: 8px; font-size: 13.5px; color: #3E4652; line-height: 1.6; }
.scenario-points li svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 4px; }
.scenario-tag {
  align-self: flex-start; margin-top: auto;
  font-size: 12px; font-weight: 700; color: var(--orange);
  background: var(--orange-soft); border-radius: 100px; padding: 7px 14px;
}
.scenarios-cta {
  margin-top: 60px; display: flex; align-items: center; justify-content: space-between; gap: 18px;
  background: linear-gradient(135deg, #0D1424 0%, #1F2942 100%);
  border-radius: 18px; padding: 26px 36px;
}
.scenarios-cta p { font-size: 17px; font-weight: 700; color: #fff; }
.scenarios-cta .btn { flex-shrink: 0; }

/* ---------- 联系我们 ---------- */
.contact { background: var(--orange); }
.contact-inner { display: flex; gap: 80px; align-items: center; }
.contact-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 26px; }
.contact .eyebrow .bar { background: #fff; }
.contact .eyebrow .txt { color: #FFE4CE; }
.contact-copy h2 { font-size: 46px; font-weight: 900; color: #fff; line-height: 1.25; }
.contact-copy .sub { font-size: 16px; color: #FFE4CE; line-height: 1.8; }
.contact-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.contact-tags .tag {
  font-size: 13px; font-weight: 500; color: #fff;
  background: rgba(255,255,255,0.2); border-radius: 100px; padding: 9px 16px;
}
.form-card {
  width: 520px; max-width: 100%; flex-shrink: 0;
  background: #fff; border-radius: 24px; padding: 44px;
  box-shadow: 0 24px 64px rgba(150,50,0,0.28);
}
.form-card h3 { font-size: 24px; font-weight: 900; color: var(--ink); }
.form-card .hint { font-size: 13px; color: var(--muted); margin-top: -12px; margin-bottom: 6px; }
#coopForm { display: flex; flex-direction: column; gap: 12px; }
#coopForm > input[type="hidden"] { display: none; }
.field { display: flex; flex-direction: column; gap: 10px; }
.field label { font-size: 14px; font-weight: 500; color: #4A5261; }
.field input {
  width: 100%; height: 52px; border: 1px solid transparent; outline: none;
  background: var(--bg-gray); border-radius: 10px; padding: 0 16px;
  font-size: 14px; font-family: inherit; color: var(--ink);
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.field input:hover { background-color: #EEF0F4; }
.field input:focus {
  border-color: var(--orange); background-color: #fff;
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.12);
}
.field input.err {
  border-color: #E54545; background-color: #FFF6F6;
  box-shadow: 0 0 0 3px rgba(229, 69, 69, 0.1);
}

/* 自定义下拉 */
.custom-select { position: relative; }
.custom-select-trigger {
  width: 100%; height: 52px; border: 1px solid transparent; outline: none;
  background: var(--bg-gray); border-radius: 10px; padding: 0 44px 0 16px;
  font-size: 14px; font-family: inherit; color: var(--ink); text-align: left;
  cursor: pointer; display: flex; align-items: center;
  transition: border-color .2s, background .2s, box-shadow .2s;
  position: relative;
}
.custom-select-trigger:hover { background-color: #EEF0F4; }
.custom-select.open .custom-select-trigger,
.custom-select-trigger:focus {
  border-color: var(--orange); background-color: #fff;
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.12);
}
.custom-select.err .custom-select-trigger {
  border-color: #E54545; background-color: #FFF6F6;
  box-shadow: 0 0 0 3px rgba(229, 69, 69, 0.1);
}
.custom-select-label.is-placeholder { color: var(--faint); }
.custom-select-arrow {
  position: absolute; right: 16px; top: 50%; width: 16px; height: 16px;
  margin-top: -8px; color: var(--muted); pointer-events: none;
  transition: transform .2s, color .2s;
}
.custom-select.open .custom-select-arrow { transform: rotate(180deg); color: var(--orange); }
.custom-select.err .custom-select-arrow { color: #E54545; }
.custom-select-dropdown {
  position: absolute; left: 0; right: 0; top: calc(100% + 6px); z-index: 20;
  margin: 0; padding: 8px; list-style: none;
  background: #fff; border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 32px rgba(13, 20, 36, 0.12);
  display: none; max-height: 240px; overflow-y: auto;
}
.custom-select.open .custom-select-dropdown { display: block; }
.custom-select-dropdown li {
  padding: 12px 14px; border-radius: 8px; font-size: 14px; color: var(--ink);
  cursor: pointer; transition: background .15s, color .15s;
}
.custom-select-dropdown li:hover { background: var(--orange-soft); color: var(--orange); }
.custom-select-dropdown li.is-selected { background: var(--orange-soft); color: var(--orange); font-weight: 600; }

.form-error { font-size: 12px; color: #E54545; display: none; margin-top: -4px; }
.form-error.show { display: block; }
.btn-submit {
  width: 100%; height: 56px; border: none; border-radius: 10px; cursor: pointer;
  background: var(--orange); color: #fff; font-size: 17px; font-weight: 700; font-family: inherit;
  transition: background .2s, transform .2s, box-shadow .2s;
  margin-top: 6px;
}
.btn-submit:hover { background: var(--orange-deep); transform: translateY(-1px); box-shadow: var(--shadow-cta); }
.btn-submit:disabled { opacity: .7; cursor: not-allowed; transform: none; box-shadow: none; }
.form-success {
  display: none; text-align: center; padding: 20px 0;
}
.form-success.show { display: block; }
.form-success .icon { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%; background: #E8F7EE; display: flex; align-items: center; justify-content: center; }
.form-success .icon svg { width: 28px; height: 28px; }
.form-success h4 { font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.form-success p { font-size: 13px; color: var(--muted); }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy-deep); padding: 44px 0; }
.footer-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 28px; }
.footer .logo-name { color: #fff; }
.footer-links { display: flex; gap: 32px; }
.footer-links a { font-size: 13px; color: #8A94A5; transition: color .2s; }
.footer-links a:hover { color: var(--orange); }
.footer-line { height: 1px; background: rgba(255,255,255,0.08); margin-bottom: 28px; }
.footer-copy { font-size: 12px; color: #5A6472; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .section { padding: 80px 0; }
  .hero-inner { flex-direction: column; gap: 48px; padding: 72px 0; }
  .hero-visual { width: 100%; max-width: 560px; }
  .hero-title { font-size: 46px; }
  .about-inner { flex-direction: column; gap: 48px; }
  .about-visual { width: 100%; max-width: 580px; }
  .model-flow { flex-direction: column; gap: 32px; }
  .model-card { width: 100%; }
  .model-transfer { width: 100%; flex-direction: row; justify-content: center; gap: 18px; flex-wrap: wrap; }
  .model-transfer .arrow { transform: rotate(90deg); }
  .scenarios-cta { flex-direction: column; align-items: flex-start; }
  .contact-inner { flex-direction: column; gap: 56px; align-items: stretch; }
  .form-card { width: 100%; max-width: 560px; margin: 0 auto; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .sec-title { font-size: 28px; }
  .sec-sub { font-size: 15px; }
  /* 导航 */
  .nav-links {
    position: fixed; top: 76px; left: 0; right: 0; z-index: 99;
    flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px; display: none; box-shadow: 0 16px 32px rgba(13,20,36,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-immersive .nav-links.open a { color: #4A5261; }
  .nav-immersive .nav-links.open a:hover,
  .nav-immersive .nav-links.open a.on { color: var(--orange); }
  .nav-links a:last-child { border-bottom: none; }
  .nav-cta { display: none; }
  .nav-burger { display: block; }
  /* Hero */
  .hero-inner { padding: 56px 0; gap: 36px; }
  .hero-badge { align-self: center; }
  .hero-title { font-size: 34px; text-align: center; }
  .hero-title em { font-size: 20px; }
  .hero-copy { align-items: center; text-align: center; }
  .hero-btns { justify-content: center; width: 100%; }
  .hero-btns .btn { flex: 1; min-width: 140px; padding: 15px 20px; font-size: 15px; }
  .hero-platforms { align-items: center; }
  .platform-chips { justify-content: center; }
  .platform-chips .chip { padding: 7px 11px; font-size: 12px; }
  /* 系统介绍 */
  .about-copy .eyebrow, .about-copy .sec-title { align-self: flex-start; }
  .point-icon { width: 38px; height: 38px; }
  .point-icon svg { width: 19px; height: 19px; }
  /* 商业模式 */
  .model-card { padding: 28px 24px; }
  .model-tags .tag { padding: 10px 14px; font-size: 12px; }
  /* 创业场景 */
  .scenarios .sec-title { font-size: 30px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-img { height: 190px; }
  .scenario-anchors { gap: 8px; margin-bottom: 40px; }
  .scenario-anchors .anchor { padding: 8px 14px; font-size: 12px; }
  .scenarios-cta { padding: 24px 22px; }
  .scenarios-cta p { font-size: 15px; line-height: 1.6; }
  .scenarios-cta .btn { width: 100%; }
  /* 联系我们 */
  .contact-copy h2 { font-size: 34px; }
  .form-card { padding: 30px 22px; }
  .contact-tags .tag { font-size: 12px; padding: 8px 13px; }
  /* 页脚 */
  .footer-top { flex-direction: column; gap: 20px; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; gap: 20px; }
  .footer-copy { line-height: 1.7; }
}

/* ---------- 导航激活态 ---------- */
.nav-links a.on { color: var(--orange); }

/* ---------- 资讯列表 / 详情 ---------- */
.news-page { padding: 48px 0 80px; min-height: 60vh; background: var(--bg-gray); }
.news-head { margin-bottom: 40px; text-align: center; }
.news-tag {
  display: inline-block; padding: 4px 12px; background: var(--orange-soft); color: var(--orange);
  border-radius: 999px; font-size: 13px; font-weight: 600; line-height: 22px;
}
.news-title { margin-top: 16px; font-size: 36px; color: var(--ink); font-weight: 900; line-height: 1.35; }
.news-title span { color: var(--orange); }
.news-sub { margin-top: 10px; font-size: 16px; color: var(--body); line-height: 1.6; }
.news-list { display: flex; flex-direction: column; gap: 18px; }
.news-card {
  display: flex; gap: 20px; padding: 20px; background: #fff; border: 1px solid var(--line);
  border-radius: 20px; text-decoration: none; box-shadow: var(--shadow-card);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(255,107,0,.12); border-color: rgba(255,107,0,.35); }
.news-card:hover .news-card-tit { color: var(--orange); }
.news-thumb {
  width: 220px; height: 148px; flex-shrink: 0; border-radius: 14px; overflow: hidden; background: var(--orange-soft);
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; max-width: none; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-thumb.empty {
  display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 16px; font-weight: 600;
}
.news-body { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: space-between; }
.news-card-tit {
  font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.45; margin: 0 0 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .2s;
}
.news-card-desc {
  margin: 0; font-size: 14px; color: var(--body); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; gap: 12px; }
.news-date { font-size: 13px; color: var(--muted); }
.news-more { font-size: 13px; font-weight: 600; color: var(--orange); }
.news-empty {
  padding: 64px 24px; text-align: center; background: #fff; border: 1px solid var(--line);
  border-radius: 20px; color: var(--body); font-size: 16px;
}
.news-pagination {
  margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; text-align: center;
}
.news-pagination em { font-style: normal; font-size: 13px; color: var(--muted); margin-right: 8px; }
.news-pagination a, .news-pagination strong {
  display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px;
  padding: 0 14px; border-radius: 10px; font-size: 14px; font-weight: 600; text-decoration: none; box-sizing: border-box;
}
.news-pagination a { background: #fff; border: 1px solid #e5e7eb; color: var(--body); }
.news-pagination a:hover { border-color: var(--orange); color: var(--orange); }
.news-pagination strong { background: var(--orange); color: #fff; border: 1px solid var(--orange); }

.news-back {
  display: inline-flex; align-items: center; font-size: 14px; font-weight: 600; color: var(--muted);
  margin-bottom: 24px; text-decoration: none; transition: color .2s;
}
.news-back:hover { color: var(--orange); }
.article-card {
  background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 40px 44px;
  box-shadow: var(--shadow-card);
}
.article-card > h1 { font-size: 32px; font-weight: 900; color: var(--ink); line-height: 1.35; margin: 0 0 20px; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 20px; padding-bottom: 24px; margin-bottom: 28px;
  border-bottom: 1px solid var(--line); font-size: 13px; color: var(--muted);
}
.article-content { color: #364153; font-size: 16px; line-height: 1.9; word-break: break-word; overflow: hidden; }
.article-content p { margin: 0 0 1em; }
.article-content h1, .article-content h2, .article-content h3, .article-content h4 {
  color: var(--ink); font-weight: 700; margin: 1.6em 0 .8em; line-height: 1.4;
}
.article-content h1 { font-size: 28px; }
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content h4 { font-size: 18px; }
.article-content a { color: var(--orange); text-decoration: underline; }
.article-content a:hover { color: var(--orange-deep); }
.article-content strong, .article-content b { color: var(--ink); }
.article-content ul, .article-content ol { margin: 0 0 1em; padding-left: 1.5em; list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin: .3em 0; }
.article-content blockquote {
  margin: 1.2em 0; padding: 14px 18px; border-left: 3px solid var(--orange);
  background: var(--orange-soft); color: #364153; border-radius: 10px;
}
.article-content img, .article-content video {
  max-width: 100%; height: auto; border-radius: 14px; margin: 1em auto; display: block;
}
.article-content table { width: 100%; border-collapse: collapse; margin: 1em 0; }
.article-content th, .article-content td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.article-content th { background: var(--orange-soft); color: var(--ink); }
.article-content pre, .article-content code { background: var(--orange-soft); color: var(--orange-deep); border-radius: 8px; }
.article-content code { padding: 2px 6px; font-size: .9em; }
.article-content pre { padding: 14px 16px; overflow-x: auto; margin: 1em 0; }
.article-content hr { border: 0; border-top: 1px solid var(--line); margin: 1.5em 0; }
.article-empty { color: var(--muted); }

@media (max-width: 1024px) {
  .news-page { padding: 36px 0 64px; }
  .article-card { padding: 32px 28px; }
}
@media (max-width: 640px) {
  .news-title { font-size: 28px; }
  .news-card { flex-direction: column; gap: 14px; }
  .news-thumb { width: 100%; height: 180px; }
  .article-card { padding: 24px 18px; border-radius: 16px; }
  .article-card > h1 { font-size: 24px; }
}