/* ============================================================
   海辰国际 UIPPO 企业官网 全局样式
   山东海辰国际商务有限公司 | www.uippo.com
   主色：中国红 + 金色点缀 + 暖墨色
   ============================================================ */

:root {
  --red-900: #4d070f;
  --red-800: #6f0c18;
  --red-700: #94101f;
  --red-600: #c8102e;
  --red-500: #e02a45;
  --red-100: #fdeef0;
  --gold: #c9a063;
  --gold-light: #e3c896;
  --ink: #221b19;
  --ink-2: #4a413e;
  --muted: #857b76;
  --paper: #fbf7f1;
  --paper-2: #f4ede4;
  --line: #e7ddd2;
  --dark: #160a0d;
  --dark-2: #200e12;
  --white: #ffffff;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --shadow-1: 0 10px 30px rgba(77, 7, 15, .08);
  --radius: 12px;
  --container: 1200px;
  --header-h: 72px;
}

/* ---------- Reset / 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

::selection { background: var(--red-600); color: #fff; }
:focus-visible { outline: 2px solid var(--red-500); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: linear-gradient(180deg, rgba(14, 6, 8, .92), rgba(14, 6, 8, .72));
  border-bottom: 1px solid rgba(201, 160, 99, .22);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.is-solid {
  background: rgba(14, 6, 8, .97);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .25);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 8px; flex: none;
  background: linear-gradient(145deg, var(--red-500), var(--red-700));
  color: #fff; font-family: var(--serif); font-weight: 900; font-size: 22px;
  display: grid; place-items: center; line-height: 1;
  box-shadow: 0 4px 14px rgba(200, 16, 46, .4);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { color: #fff; font-family: var(--serif); font-size: 19px; letter-spacing: 3px; }
.brand-text small { color: var(--gold); font-size: 10px; letter-spacing: 2.6px; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: rgba(255, 255, 255, .82); font-size: 15px; letter-spacing: 1px;
  padding: 9px 15px; border-radius: 6px; transition: color .2s, background .2s;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.nav-links a.active { color: #fff; }
.nav-links a.active::after { content: ""; display: block; height: 2px; background: var(--gold); border-radius: 2px; margin-top: 4px; }
.nav-links a.nav-contact {
  color: #fff; background: linear-gradient(145deg, var(--red-500), var(--red-700));
  border-radius: 999px; padding: 10px 22px; margin-left: 8px;
  box-shadow: 0 4px 16px rgba(200, 16, 46, .35);
}
.nav-links a.nav-contact:hover { background: linear-gradient(145deg, var(--red-600), var(--red-800)); }
.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; letter-spacing: 1.5px;
  transition: all .25s ease; white-space: nowrap;
}
.btn-primary { color: #fff; background: linear-gradient(145deg, var(--red-500), var(--red-700)); box-shadow: 0 6px 20px rgba(200, 16, 46, .35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(200, 16, 46, .45); }
.btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .65); background: rgba(255, 255, 255, .05); }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .12); }
.btn-gold { color: var(--dark); background: linear-gradient(145deg, var(--gold-light), var(--gold)); }
.btn-gold:hover { transform: translateY(-2px); }
.btn-line { color: var(--red-700); border: 1px solid var(--red-600); background: transparent; }
.btn-line:hover { background: var(--red-600); color: #fff; }

/* ---------- 区块标题 ---------- */
.section { padding: 92px 0; }
.section.dark { background: var(--dark); color: rgba(255, 255, 255, .85); }
.section.paper { background: var(--paper); }
.section.white { background: #fff; }
.sec-head { max-width: 780px; margin-bottom: 54px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--red-600); font-size: 13px; font-weight: 700; letter-spacing: 4px; text-transform: uppercase;
  margin-bottom: 14px;
}
.kicker::before { content: ""; width: 34px; height: 2px; background: var(--gold); }
.sec-head.center .kicker::after { content: ""; width: 34px; height: 2px; background: var(--gold); }
.section.dark .kicker { color: var(--gold-light); }
.sec-head h2 { font-family: var(--serif); font-size: 38px; font-weight: 900; line-height: 1.3; letter-spacing: 2px; color: var(--ink); }
.section.dark .sec-head h2 { color: #fff; }
.sec-head .lead { margin-top: 16px; color: var(--muted); font-size: 16.5px; }
.section.dark .sec-head .lead { color: rgba(255, 255, 255, .65); }

/* ---------- Hero（首页） ---------- */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: url("../images/hero.jpg") center 20% / cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 6, 8, .82) 0%, rgba(14, 6, 8, .25) 34%, rgba(14, 6, 8, .55) 78%, rgba(22, 10, 13, .95) 100%),
    radial-gradient(ellipse at 30% 40%, rgba(200, 16, 46, .28), transparent 55%);
}
.hero-inner { position: relative; z-index: 2; padding: 150px 24px 120px; max-width: 900px; }
.hero .kicker { color: var(--gold-light); }
.hero .kicker::before { background: var(--red-500); }
.hero h1 {
  font-family: var(--serif); color: #fff; font-size: 62px; font-weight: 900;
  line-height: 1.22; letter-spacing: 5px; margin: 18px 0 26px;
  animation: heroUp .9s cubic-bezier(.2, .7, .2, 1) both;
}
.hero h1 em { font-style: normal; color: var(--gold-light); }
.hero-sub { color: rgba(255, 255, 255, .85); font-size: 19px; letter-spacing: 1.5px; max-width: 640px; animation: heroUp .9s .12s cubic-bezier(.2, .7, .2, 1) both; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; animation: heroUp .9s .2s cubic-bezier(.2, .7, .2, 1) both; }
.hero-tags span {
  border: 1px solid rgba(201, 160, 99, .55); color: var(--gold-light);
  padding: 7px 18px; border-radius: 999px; font-size: 14px; letter-spacing: 1px; background: rgba(14, 6, 8, .35);
}
.hero-cta { display: flex; gap: 16px; margin-top: 42px; flex-wrap: wrap; animation: heroUp .9s .3s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes heroUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

.hero-statbar {
  position: relative; z-index: 2; margin-top: 46px;
  display: grid; grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(201, 160, 99, .3); border-radius: var(--radius);
  background: rgba(14, 6, 8, .5); backdrop-filter: blur(6px); overflow: hidden;
  animation: heroUp .9s .42s cubic-bezier(.2, .7, .2, 1) both;
}
.hero-stat { padding: 22px 28px; }
.hero-stat + .hero-stat { border-left: 1px solid rgba(201, 160, 99, .25); }
.hero-stat .num { font-family: var(--serif); font-size: 26px; font-weight: 900; color: var(--gold-light); letter-spacing: 1px; }
.hero-stat .lab { color: rgba(255, 255, 255, .72); font-size: 13.5px; letter-spacing: 1px; margin-top: 2px; }

/* ---------- 页面横幅（子页面） ---------- */
.page-hero {
  position: relative; padding: calc(var(--header-h) + 74px) 0 64px;
  background: url("../images/hero.jpg") center 18% / cover no-repeat;
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14, 6, 8, .88) 0%, rgba(22, 10, 13, .72) 60%, rgba(22, 10, 13, .96) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumbs { color: rgba(255, 255, 255, .6); font-size: 13.5px; letter-spacing: 1.5px; margin-bottom: 14px; }
.page-hero .crumbs a:hover { color: var(--gold-light); }
.page-hero h1 { font-family: var(--serif); color: #fff; font-size: 46px; font-weight: 900; letter-spacing: 4px; line-height: 1.3; }
.page-hero .lead { color: rgba(255, 255, 255, .78); font-size: 17px; margin-top: 14px; max-width: 760px; letter-spacing: .5px; }

/* ---------- 业务卡片 ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px 32px 34px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  display: flex; flex-direction: column;
}
.service-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--red-500), var(--red-700)); border-radius: 4px 0 0 4px;
  opacity: 0; transition: opacity .25s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-1); border-color: rgba(200, 16, 46, .4); }
.service-card:hover::before { opacity: 1; }
.svc-icon {
  width: 58px; height: 58px; border-radius: 14px; margin-bottom: 22px;
  background: linear-gradient(145deg, var(--red-100), #f7d9dd);
  display: grid; place-items: center; color: var(--red-700);
}
.svc-icon svg { width: 30px; height: 30px; }
.service-card h3 { font-family: var(--serif); font-size: 21px; font-weight: 900; letter-spacing: 1px; margin-bottom: 10px; }
.service-card .desc { color: var(--ink-2); font-size: 14.5px; margin-bottom: 18px; flex: 1; }
.service-card ul { border-top: 1px dashed var(--line); padding-top: 16px; margin-bottom: 22px; }
.service-card li { position: relative; padding-left: 20px; font-size: 14px; color: var(--ink-2); margin-bottom: 9px; }
.service-card li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; background: var(--gold); border-radius: 50%; }
.svc-link { color: var(--red-600); font-weight: 600; font-size: 14.5px; letter-spacing: 1px; display: inline-flex; align-items: center; gap: 6px; }
.svc-link:hover { color: var(--red-700); }
.svc-link svg { width: 16px; height: 16px; transition: transform .2s; }
.svc-link:hover svg { transform: translateX(4px); }

/* ---------- 图文分栏（关于） ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.split .media { position: relative; }
.split .media img { border-radius: var(--radius); box-shadow: var(--shadow-1); width: 100%; height: 460px; object-fit: cover; }
.split .media::after {
  content: ""; position: absolute; inset: 22px -22px -22px 22px; z-index: -1;
  border: 2px solid var(--gold); border-radius: var(--radius); opacity: .55;
}
.split .badge-tag {
  position: absolute; right: 18px; bottom: 18px;
  background: linear-gradient(145deg, var(--red-500), var(--red-700)); color: #fff;
  padding: 10px 20px; border-radius: 8px; font-family: var(--serif); font-size: 15px; letter-spacing: 2px;
  box-shadow: 0 8px 20px rgba(200, 16, 46, .4);
}
.split .body h2 { font-family: var(--serif); font-size: 32px; font-weight: 900; letter-spacing: 2px; line-height: 1.35; margin: 14px 0 18px; }
.split .body p { color: var(--ink-2); margin-bottom: 14px; }
.split .body .more { margin-top: 26px; }

/* ---------- 优势卡片 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card {
  background: rgba(255, 255, 255, .045); border: 1px solid rgba(201, 160, 99, .28);
  border-radius: var(--radius); padding: 30px 26px;
  transition: transform .25s, border-color .25s, background .25s;
}
.adv-card:hover { transform: translateY(-5px); border-color: var(--gold); background: rgba(255, 255, 255, .07); }
.adv-num { font-family: var(--serif); font-size: 34px; font-weight: 900; color: var(--gold); opacity: .9; display: block; margin-bottom: 14px; }
.adv-card h3 { color: #fff; font-family: var(--serif); font-size: 19px; font-weight: 700; letter-spacing: 1px; margin-bottom: 10px; }
.adv-card p { color: rgba(255, 255, 255, .6); font-size: 14px; }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; --t-time: 210px; --t-axis: 48px; }
.timeline::before {
  content: ""; position: absolute; top: 8px; bottom: 0;
  left: calc(var(--t-time) + var(--t-axis) / 2);
  width: 2px; transform: translateX(-50%);
  background: linear-gradient(180deg, var(--red-500), rgba(200, 16, 46, .12));
}
.tl-row { display: grid; grid-template-columns: var(--t-time) var(--t-axis) 1fr; }
.tl-time { text-align: right; padding: 2px 18px 0 0; }
.tl-time .stage { font-family: var(--serif); font-size: 19px; font-weight: 900; color: var(--red-700); letter-spacing: 1px; line-height: 1.4; }
.tl-time .seq { display: block; color: var(--gold); font-size: 12px; letter-spacing: 3px; margin-top: 4px; }
.tl-axis { justify-self: center; align-self: start; padding-top: 8px; }
.tl-dot {
  display: block; width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 3px solid var(--red-600);
  box-shadow: 0 0 0 5px rgba(200, 16, 46, .16);
}
.tl-body { padding: 0 0 52px 26px; }
.tl-row:last-child .tl-body { padding-bottom: 8px; }
.tl-body h3 { font-family: var(--serif); font-size: 20px; font-weight: 900; letter-spacing: 1px; margin-bottom: 8px; }
.tl-body p { color: var(--ink-2); font-size: 15px; max-width: 680px; }
.tl-body .tl-points { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.tl-body .tl-points span { font-size: 12.5px; color: var(--red-700); background: var(--red-100); padding: 4px 12px; border-radius: 999px; }
.dark-tl .tl-body h3 { color: #fff; }
.dark-tl .tl-body p { color: rgba(255, 255, 255, .66); }

/* ---------- 论坛卡片 ---------- */
.forum-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.forum-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.forum-card {
  display: flex; flex-direction: column; gap: 10px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: transform .25s, box-shadow .25s, border-color .25s;
}
.forum-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-1); border-color: rgba(200, 16, 46, .35); }
.forum-card .f-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.forum-card h3 { font-family: var(--serif); font-size: 18px; font-weight: 900; letter-spacing: .5px; }
.forum-card .f-icon { width: 40px; height: 40px; flex: none; border-radius: 10px; background: linear-gradient(145deg, var(--red-100), #f6d6da); color: var(--red-700); display: grid; place-items: center; }
.forum-card .f-icon svg { width: 20px; height: 20px; }
.forum-card p { color: var(--ink-2); font-size: 14px; flex: 1; }
.forum-card .f-meta { color: var(--muted); font-size: 12.5px; }
.forum-card .f-link { color: var(--red-600); font-size: 14px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.forum-card .f-link:hover { color: var(--red-700); }
.forum-card .f-link svg { width: 15px; height: 15px; }
.cat-title { display: flex; align-items: center; gap: 14px; margin: 0 0 26px; }
.cat-title .no { font-family: var(--serif); font-size: 26px; font-weight: 900; color: var(--red-600); }
.cat-title h3 { font-family: var(--serif); font-size: 22px; font-weight: 900; letter-spacing: 1px; }
.cat-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.forum-cat { margin-bottom: 56px; }
.forum-cat:last-child { margin-bottom: 0; }

/* ---------- 文章卡片 ---------- */
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.article-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .25s, box-shadow .25s; }
.article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-1); }
.art-cover { position: relative; height: 168px; background: linear-gradient(135deg, var(--red-800), var(--dark-2)); display: grid; place-items: center; }
.art-cover::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 78% 20%, rgba(201, 160, 99, .35), transparent 46%); }
.art-cover svg { width: 54px; height: 54px; color: var(--gold-light); position: relative; z-index: 1; opacity: .9; }
.art-cover .art-tag { position: absolute; left: 16px; top: 16px; z-index: 2; background: rgba(14, 6, 8, .55); color: var(--gold-light); border: 1px solid rgba(201, 160, 99, .5); font-size: 12px; padding: 3px 12px; border-radius: 999px; letter-spacing: 1px; }
.article-card .art-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.article-card .art-date { color: var(--muted); font-size: 12.5px; letter-spacing: 1px; }
.article-card h3 { font-family: var(--serif); font-size: 18px; font-weight: 900; line-height: 1.5; margin: 8px 0 10px; }
.article-card p { color: var(--ink-2); font-size: 14px; flex: 1; }
.article-card .art-more { margin-top: 16px; color: var(--red-600); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.article-card .art-more:hover { color: var(--red-700); }
.article-card .art-more svg { width: 15px; height: 15px; }

/* ---------- CTA 横幅 ---------- */
.cta-band { position: relative; padding: 96px 0; background: url("../images/cta.jpg") center / cover no-repeat; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20, 8, 11, .92) 20%, rgba(20, 8, 11, .78)); }
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-family: var(--serif); color: #fff; font-size: 34px; font-weight: 900; letter-spacing: 3px; line-height: 1.4; }
.cta-band p { color: rgba(255, 255, 255, .72); margin: 14px 0 30px; max-width: 560px; }
.cta-phone { display: flex; align-items: center; gap: 14px; margin-top: 8px; }
.cta-phone a { color: var(--gold-light); font-family: var(--serif); font-size: 28px; font-weight: 900; letter-spacing: 2px; }
.cta-phone a:hover { color: #fff; }

/* ---------- 联系我们 ---------- */
.contact { background: linear-gradient(160deg, var(--dark-2), var(--dark)); padding: 92px 0; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(201, 160, 99, .3);
  border-radius: var(--radius); padding: 34px 30px; text-align: center;
  transition: transform .25s, border-color .25s, background .25s; display: block;
}
.contact-card:hover { transform: translateY(-5px); border-color: var(--gold); background: rgba(255, 255, 255, .08); }
.contact-card .c-icon { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; background: linear-gradient(145deg, var(--red-500), var(--red-700)); display: grid; place-items: center; color: #fff; box-shadow: 0 6px 18px rgba(200, 16, 46, .4); }
.contact-card .c-icon svg { width: 24px; height: 24px; }
.contact-card .c-lab { color: rgba(255, 255, 255, .55); font-size: 13px; letter-spacing: 2px; margin-bottom: 8px; }
.contact-card .c-val { color: #fff; font-family: var(--serif); font-size: 21px; font-weight: 900; letter-spacing: 1px; line-height: 1.5; }
.contact-note { text-align: center; color: rgba(255, 255, 255, .55); font-size: 14.5px; margin-top: 34px; letter-spacing: .5px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); border-top: 1px solid rgba(201, 160, 99, .22); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 46px; }
.site-footer h4 { color: #fff; font-family: var(--serif); font-size: 16px; font-weight: 700; letter-spacing: 1px; margin-bottom: 18px; }
.site-footer .f-brand p { color: rgba(255, 255, 255, .55); font-size: 14px; margin-top: 16px; max-width: 300px; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid ul a { color: rgba(255, 255, 255, .62); font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-grid ul a:hover { color: var(--gold-light); padding-left: 4px; }
.footer-grid .f-contact li { color: rgba(255, 255, 255, .62); font-size: 14px; display: flex; gap: 10px; align-items: flex-start; }
.footer-grid .f-contact svg { width: 17px; height: 17px; color: var(--gold); flex: none; margin-top: 3px; }
.footer-grid .f-contact a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
  color: rgba(255, 255, 255, .45); font-size: 13px;
}
.footer-bottom a:hover { color: var(--gold-light); }
.footer-bottom .icp { letter-spacing: .5px; }

/* ---------- 服务详情页 ---------- */
.svc-detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; padding: 30px 0; }
.svc-detail + .svc-detail { border-top: 1px dashed var(--line); margin-top: 56px; padding-top: 56px; }
.svc-detail:nth-child(even) .media { order: 2; }
.svc-detail .media { position: relative; }
.svc-detail .media .m-icon { width: 96px; height: 96px; border-radius: 24px; background: linear-gradient(145deg, var(--red-500), var(--red-700)); color: #fff; display: grid; place-items: center; box-shadow: 0 14px 30px rgba(200, 16, 46, .35); margin-bottom: 26px; }
.svc-detail .media .m-icon svg { width: 48px; height: 48px; }
.svc-detail .media h3 { font-family: var(--serif); font-size: 28px; font-weight: 900; letter-spacing: 1px; margin-bottom: 12px; }
.svc-detail .media p { color: var(--ink-2); font-size: 15px; }
.svc-list { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; padding: 12px 8px; }
.svc-list li { display: flex; gap: 14px; align-items: flex-start; padding: 13px 16px; border-radius: 8px; transition: background .2s; }
.svc-list li:hover { background: var(--paper); }
.svc-list .n { flex: none; width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(145deg, var(--red-100), #f7d9dd); color: var(--red-700); font-family: var(--serif); font-weight: 900; font-size: 14px; display: grid; place-items: center; }
.svc-list .t { font-size: 14.5px; color: var(--ink); }
.svc-list .t small { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
.step { position: relative; background: rgba(255, 255, 255, .05); border: 1px solid rgba(201, 160, 99, .28); border-radius: var(--radius); padding: 28px 22px; }
.step .s-no { font-family: var(--serif); font-size: 32px; font-weight: 900; color: var(--gold); display: block; margin-bottom: 12px; }
.step h4 { color: #fff; font-size: 16px; font-weight: 700; letter-spacing: 1px; margin-bottom: 8px; }
.step p { color: rgba(255, 255, 255, .6); font-size: 13.5px; }
.step::after {
  content: ""; position: absolute; right: -15px; top: 50%; width: 12px; height: 2px; background: var(--gold); opacity: .6;
}
.step:last-child::after { display: none; }

/* ---------- 文章正文页 ---------- */
.article-list { display: grid; gap: 0; }
.article-block { border-bottom: 1px dashed var(--line); padding: 46px 0; scroll-margin-top: calc(var(--header-h) + 20px); }
.article-block:first-child { padding-top: 0; }
.article-block .a-meta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.article-block .a-tag { color: var(--red-700); background: var(--red-100); padding: 3px 12px; border-radius: 999px; font-size: 12.5px; }
.article-block h2 { font-family: var(--serif); font-size: 26px; font-weight: 900; letter-spacing: 1px; line-height: 1.45; margin-bottom: 18px; scroll-margin-top: calc(var(--header-h) + 20px); }
.article-block .a-lead { color: var(--red-800); font-size: 16.5px; font-weight: 600; border-left: 3px solid var(--gold); padding-left: 16px; margin-bottom: 18px; }
.article-block p { color: var(--ink-2); font-size: 15.5px; margin-bottom: 14px; }
.article-block h3 { font-family: var(--serif); font-size: 19px; font-weight: 900; margin: 22px 0 10px; letter-spacing: .5px; }
.article-block ul { margin: 0 0 14px 4px; }
.article-block ul li { position: relative; padding-left: 20px; margin-bottom: 8px; color: var(--ink-2); font-size: 15px; }
.article-block ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 8px; background: var(--gold); border-radius: 50%; }
.article-block .a-note { background: var(--paper); border: 1px solid var(--line); border-left: 3px solid var(--red-600); padding: 14px 18px; border-radius: 8px; font-size: 14px; color: var(--ink-2); margin: 18px 0; }
.art-nav-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 26px; }
.art-nav-card { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 16px 16px; background: #fff; transition: transform .2s, border-color .2s; }
.art-nav-card:hover { transform: translateY(-3px); border-color: rgba(200, 16, 46, .45); }
.art-nav-card .no { color: var(--red-600); font-family: var(--serif); font-weight: 900; font-size: 13px; }
.art-nav-card .tt { font-size: 14px; font-weight: 600; line-height: 1.5; margin-top: 4px; display: block; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 14px; overflow: hidden; transition: border-color .2s; }
.faq-item[open] { border-color: rgba(200, 16, 46, .45); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 20px 24px;
  font-family: var(--serif); font-weight: 700; font-size: 16.5px; letter-spacing: .5px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--red-600); font-size: 22px; font-weight: 400; transition: transform .2s; flex: none; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 24px 20px; color: var(--ink-2); font-size: 15px; }

/* ---------- 通用小件 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 0;
  background: linear-gradient(145deg, var(--red-500), var(--red-700)); color: #fff;
  display: grid; place-items: center; box-shadow: 0 8px 22px rgba(200, 16, 46, .4);
  opacity: 0; visibility: hidden; transform: translateY(12px); transition: all .3s;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top svg { width: 20px; height: 20px; }
.back-top:hover { background: linear-gradient(145deg, var(--red-600), var(--red-800)); }

.center-cta { text-align: center; margin-top: 46px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step::after { display: none; }
  .forum-grid { grid-template-columns: repeat(2, 1fr); }
  .art-nav-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .service-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .split .media img { height: 380px; }
  .svc-detail { grid-template-columns: 1fr; gap: 40px; }
  .svc-detail:nth-child(even) .media { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 46px; }
  .sec-head h2 { font-size: 30px; }
  .page-hero h1 { font-size: 36px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(14, 6, 8, .98); padding: 18px 24px 26px;
    border-bottom: 1px solid rgba(201, 160, 99, .25);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 10px; font-size: 16px; }
  .nav-links a.nav-contact { text-align: center; margin: 8px 0 0; }
  .nav-toggle { display: block; }
  .hero-statbar { grid-template-columns: 1fr; }
  .hero-stat + .hero-stat { border-left: 0; border-top: 1px solid rgba(201, 160, 99, .25); }
  .timeline { --t-time: 88px; --t-axis: 28px; }
  .tl-time { padding-right: 10px; }
  .tl-time .stage { font-size: 15px; }
  .tl-body { padding-left: 14px; }
  .split .media::after { display: none; }
  /* 移动端扩大点击区域 */
  .svc-link, .art-more, .f-link { padding: 10px 2px; margin: -10px -2px; }
  .cta-phone a { padding: 6px 2px; }
  .brand { padding: 2px 0; }
  .footer-bottom a { padding: 12px 6px; margin: -10px -6px; }
  .hero-stat .lab { font-size: 14px; }
  .tl-points span { font-size: 13px; }
  .forum-card .f-meta { font-size: 13px; }
}

@media (max-width: 560px) {
  .service-grid, .article-grid, .adv-grid { grid-template-columns: 1fr; }
  .forum-grid, .forum-grid.cols-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero { min-height: 92vh; }
  .hero h1 { font-size: 36px; letter-spacing: 3px; }
  .hero-sub { font-size: 16.5px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .cta-band h2 { font-size: 26px; }
  .cta-phone a { font-size: 22px; }
  .article-block h2 { font-size: 21px; }
  .art-nav-cards { grid-template-columns: 1fr 1fr; }
  .sec-head h2 { font-size: 26px; }
  .page-hero h1 { font-size: 30px; }
  .brand-text strong { letter-spacing: 2px; }
  .contact-card .c-val { font-size: 18px; }
}