/* ============================================================
   DDW 官网 — base.css（新中式科技风：宣纸 × 墨 × 朱砂 × 金）
   三色主题变量 + 组件样式，改一处全站生效
   ============================================================ */

/* ================= 设计令牌（A 宣纸朱砂 = 默认） ================= */
:root {
  --paper: #FAF6EE;
  --paper-2: #F4EEE1;
  --ink: #2B2A26;
  --ink-2: #5D5A50;
  --ink-3: #98917F;
  --cinnabar: #C43D2C;
  --cinnabar-deep: #9E2F22;
  --gold: #C9A063;
  --gold-deep: #A87F3F;
  --daiblue: #3E5C76;
  --line: #E4DCCB;
  --line-strong: #C9BFA8;
  --ink-band: #262B33;
  --ink-band-2: #313A45;
  --text-on-ink: #EDE7DA;
  --shadow: 0 12px 40px rgba(60, 50, 30, .10);
  --shadow-cin: 0 14px 40px rgba(196, 61, 44, .22);
  --radius: 14px;
  --font: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;

  /* 兼容旧页面变量映射 */
  --bg-base: var(--paper);
  --bg-page: var(--paper);
  --bg-hero: var(--paper);
  --bg-card: var(--paper-2);
  --bg-elevated: var(--paper-2);
  --bg-hover: rgba(196, 61, 44, .04);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-muted: var(--ink-3);
  --brand: var(--cinnabar);
  --brand-hover: var(--cinnabar-deep);
  --brand-glow: rgba(196, 61, 44, .25);
  --accent: var(--gold);
  --accent-orange: var(--gold-deep);
  --accent-soft: rgba(201, 160, 99, .12);
  --border: var(--line);
  --border-strong: var(--line-strong);
  --border-hover: var(--cinnabar);
  --btn-primary-bg: var(--cinnabar);
  --btn-primary-text: var(--paper);
  --shadow-lg: var(--shadow);
  --shadow-glow: var(--shadow-cin);
  --cta-bg: var(--ink-band);
  --cta-text: var(--text-on-ink);
  --cta-sub: rgba(237, 231, 218, .7);
  --footer-bg: var(--ink-band);
  --footer-text: rgba(237, 231, 218, .75);
  --footer-heading: var(--text-on-ink);
  --footer-muted: rgba(237, 231, 218, .45);
  --footer-line: rgba(237, 231, 218, .12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--paper); color: var(--ink); line-height: 1.75; -webkit-font-smoothing: antialiased; font-size: 16px; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
p, .subtitle, .card p, .footer-desc, .list-item p { text-align: justify; text-justify: inter-ideograph; }

/* ================= 通用布局 ================= */
.container, .wrap { max-width: 1200px; margin: 0 auto; padding: 0 4vw; }
.section { padding: 96px 0; }
.section-alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head, .section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.sec-head.left, .section-head.left { margin-left: 0; text-align: left; }
.sec-head .seal { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.sec-head .seal .stamp { width: 34px; height: 34px; background: var(--cinnabar); color: var(--paper); display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 900; border-radius: 7px; box-shadow: 0 4px 14px rgba(196,61,44,.35); transform: rotate(-3deg); }
.sec-head .seal span { font-size: 13px; font-weight: 700; letter-spacing: .22em; color: var(--cinnabar); }
.sec-head h2, .section-head h2 { font-size: clamp(24px, 3.6vw, 40px); font-weight: 900; letter-spacing: .01em; margin-bottom: 14px; line-height: 1.3; }
.sec-head h2 em, .section-head h2 em { font-style: normal; color: var(--cinnabar); }
.sec-head p, .section-head p { color: var(--ink-2); font-size: 15px; line-height: 1.9; }
.sec-head .rule { width: 64px; height: 3px; background: linear-gradient(90deg, var(--cinnabar), var(--gold)); border-radius: 3px; margin-top: 20px; }

.section-head .tag {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 12px;
  font-weight: 500;
  display: inline-block;
}

/* ================= 导航（宣纸毛玻璃） ================= */
.nav, #site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 246, 238, .85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
#site-header .site-header { background: transparent; border-bottom: none; }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 4vw;
}
.logo { display: flex; align-items: center; gap: 12px; font-weight: 900; font-size: 19px; letter-spacing: .03em; color: var(--ink); }
.logo img { height: 38px; width: auto; }
.logo-seal {
  width: 38px;
  height: 38px;
  background: var(--cinnabar);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 17px;
  font-weight: 900;
  box-shadow: 0 4px 14px rgba(196,61,44,.35);
  transform: rotate(-4deg);
}
.logo-text { font-size: 18px; font-weight: 600; letter-spacing: 1px; color: var(--ink); }
.logo-sub { font-size: 12px; color: var(--ink-3); letter-spacing: 2px; margin-top: 2px; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 600;
  transition: color .2s;
  position: relative;
  padding: 4px 0;
}
.main-nav a:hover, .main-nav a.active { color: var(--cinnabar); }
.main-nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--cinnabar); transition: width .25s; }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active::after { width: 100%; }

/* 下拉菜单 */
.nav-item { position: relative; }
.nav-item > a { display: inline-block; }
.nav-item .dd-menu {
  display: none; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  min-width: 220px; background: var(--paper-2); border: 1px solid var(--line-strong);
  border-radius: 10px; padding: 8px; box-shadow: var(--shadow); z-index: 120;
}
.nav-item:hover .dd-menu, .nav-item:focus-within .dd-menu { display: block; }
.dd-menu .dd-title { font-size: 12px; color: var(--ink-3); padding: 6px 14px 4px; letter-spacing: 1px; }
.dd-menu a { display: block; padding: 10px 14px; font-size: 14px; color: var(--ink-2); border-radius: 7px; }
.dd-menu a:hover { background: rgba(196, 61, 44, .06); color: var(--cinnabar); }
.dd-menu a::after { display: none; }

.nav-cta, .nav .cta {
  background: var(--cinnabar);
  color: var(--paper) !important;
  border: none;
  border-radius: 999px;
  padding: 9px 24px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(196, 61, 44, .32);
  transition: all .2s;
}
.nav-cta:hover, .nav .cta:hover {
  background: var(--cinnabar-deep);
  transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

/* 移动端导航 */
.nav-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--ink); cursor: pointer; padding: 4px 8px; line-height: 1; }
@media (max-width: 960px) {
  .header-inner { flex-wrap: wrap; }
  .nav-toggle { display: block; }
  .main-nav { display: none; width: 100%; flex-direction: column; align-items: flex-start; padding: 10px 0 14px; gap: 4px; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 8px 2px; width: 100%; border-bottom: 1px dashed var(--line); }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav a::after { display: none; }
  .main-nav .nav-cta { width: auto; margin-top: 10px; }
  .nav-item { width: 100%; }
  .nav-item > a { width: 100%; }
  .nav-item .dd-menu { position: static; transform: none; box-shadow: none; border: none; padding: 2px 0 4px 14px; display: none; }
  .main-nav.open .nav-item .dd-menu { display: block; }
  .dd-menu a { padding: 8px 2px; border-bottom: 1px dashed var(--line); }
}

/* ================= Hero（非对称：左文右视觉） ================= */
.hero {
  position: relative;
  padding: 148px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 45% at 82% 18%, rgba(201,160,99,.14) 0%, transparent 60%),
    radial-gradient(ellipse 45% 40% at 12% 85%, rgba(196,61,44,.06) 0%, transparent 60%),
    var(--paper);
  text-align: left;
  border-bottom: none;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 75% 90% at 70% 20%, #000 15%, transparent 72%);
  opacity: .5;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; max-width: 1200px; margin: 0 auto; padding: 0 4vw; }

/* Hero 左文案 */
.hero-copy .kicker, .hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--cinnabar);
  margin-bottom: 26px;
}
.hero-copy .kicker::before { content: ""; width: 34px; height: 2px; background: var(--cinnabar); }
.hero-copy h1, .hero h1 {
  font-size: clamp(36px, 5.2vw, 58px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .01em;
  margin-bottom: 24px;
  text-align: left;
}
.hero-copy h1 .cin { color: var(--cinnabar); }
.hero-copy h1 .gold-line { position: relative; display: inline-block; }
.hero-copy h1 .gold-line::after { content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 10px; background: rgba(201,160,99,.28); z-index: -1; border-radius: 2px; }
.hero-copy .sub, .hero .subtitle {
  max-width: 520px;
  color: var(--ink-2);
  font-size: 16px;
  margin-bottom: 36px;
  line-height: 1.9;
  text-align: left;
}
.hero-copy .btns, .hero-actions { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; position: relative; z-index: 10; }

/* Hero 右视觉 */
.hero-art { position: relative; height: 460px; }
.hero-art .big-seal {
  position: absolute; right: 6%; top: 4%; width: 150px; height: 150px;
  background: var(--cinnabar); color: var(--paper); border-radius: 16px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  transform: rotate(4deg); box-shadow: 0 18px 44px rgba(196,61,44,.35); z-index: 3;
}
.hero-art .big-seal b { font-size: 44px; font-weight: 900; letter-spacing: .02em; line-height: 1; }
.hero-art .big-seal span { font-size: 13px; letter-spacing: .3em; margin-top: 10px; opacity: .92; }
.hero-art .orbit {
  position: absolute; left: 8%; top: 12%; width: 340px; height: 340px;
  border: 1.5px solid rgba(196,61,44,.25); border-radius: 50%;
  animation: spin 36s linear infinite;
}
.hero-art .orbit::before { content: ""; position: absolute; top: -6px; left: 50%; width: 12px; height: 12px; border-radius: 50%; background: var(--cinnabar); box-shadow: 0 0 18px rgba(196,61,44,.8); }
.hero-art .orbit-2 {
  position: absolute; left: 20%; top: 24%; width: 220px; height: 220px;
  border: 1.5px dashed rgba(62,92,118,.4); border-radius: 50%;
  animation: spinRev 26s linear infinite;
}
.hero-art .orbit-2::before { content: ""; position: absolute; bottom: -5px; left: 50%; width: 10px; height: 10px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 14px rgba(201,160,99,.9); }
.hero-art .orbit-3 { position: absolute; left: 32%; top: 34%; width: 120px; height: 120px; border: 1.5px solid rgba(62,92,118,.3); border-radius: 50%; }
.hero-art .core {
  position: absolute; left: 38%; top: 40%; width: 68px; height: 68px;
  border-radius: 50%; background: radial-gradient(circle at 32% 28%, #E8735F, var(--cinnabar) 70%);
  box-shadow: 0 0 40px rgba(196,61,44,.45), 0 0 90px rgba(196,61,44,.2); z-index: 2;
}
.hero-art .core::after { content: "AI"; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: #FFF6EC; font-weight: 900; font-size: 19px; letter-spacing: .05em; }
.hero-art .float-card {
  position: absolute; background: rgba(250,246,238,.92); border: 1px solid var(--line-strong);
  border-radius: 10px; padding: 12px 16px; font-size: 13px;
  box-shadow: var(--shadow); backdrop-filter: blur(6px); z-index: 4;
}
.hero-art .float-card b { color: var(--cinnabar); font-weight: 800; }
.hero-art .fc-1 { right: 0; top: 44%; }
.hero-art .fc-2 { left: 0; bottom: 8%; }
.hero-art .fc-3 { right: 12%; bottom: 4%; }
.hero-art .char {
  position: absolute; font-size: 200px; font-weight: 900;
  color: transparent; -webkit-text-stroke: 1.5px rgba(43,42,38,.07);
  right: -2%; bottom: -6%; line-height: 1; z-index: 0; user-select: none;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spinRev { to { transform: rotate(-360deg); } }

/* 旧 Hero 兼容（居中布局，非首页等） */
.hero.container-style { padding: 84px 0 72px; text-align: center; }
.hero.container-style h1 { text-align: center; }
.hero.container-style .subtitle { max-width: 680px; margin: 0 auto 36px; text-align: center; }
.hero .hero-actions { justify-content: flex-start; }

/* ================= 按钮 ================= */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s;
  cursor: pointer;
  border: 1.5px solid transparent;
  text-align: center;
}
.btn-cin, .btn-primary, .btn-accent {
  background: var(--cinnabar);
  color: var(--paper);
  box-shadow: 0 10px 26px rgba(196,61,44,.3);
}
.btn-cin:hover, .btn-primary:hover, .btn-accent:hover {
  background: var(--cinnabar-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(196,61,44,.4);
  opacity: 1;
}
.btn-ink, .btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-ink:hover, .btn-outline:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ================= 数字条（玻璃卡） ================= */
.stats-band { padding: 48px 0; border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
@media (max-width: 960px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: rgba(250, 246, 238, .6);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 24px 16px;
  backdrop-filter: blur(8px);
}
.stat .stat-num, .trust-item b {
  font-size: 30px;
  font-weight: 900;
  color: var(--ink);
  font-family: "DIN Pro", "Roboto Mono", -apple-system, sans-serif;
}
.stat .stat-num em, .trust-item b em { font-style: normal; color: var(--cinnabar); }
.stat .stat-label, .trust-item span {
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 6px;
  letter-spacing: .08em;
}
.trust-item { text-align: center; }
.trust-item b { display: block; }

/* ================= 板块卡（印章单字图标） ================= */
.domains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.d-card {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 28px 26px;
  position: relative;
  transition: all .3s;
  overflow: hidden;
}
.d-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--cinnabar), var(--gold));
  opacity: 0; transition: opacity .3s;
}
.d-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--cinnabar); }
.d-card:hover::before { opacity: 1; }
.d-card .stamp {
  width: 46px; height: 46px; background: var(--ink); color: var(--paper);
  border-radius: 9px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900; margin-bottom: 16px;
  transform: rotate(-3deg); transition: all .3s;
}
.d-card:nth-child(2) .stamp, .d-card:nth-child(5) .stamp { background: var(--cinnabar); }
.d-card:nth-child(3) .stamp, .d-card:nth-child(6) .stamp { background: var(--daiblue); }
.d-card:hover .stamp { transform: rotate(0deg) scale(1.06); }
.d-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.d-card p { font-size: 13.5px; color: var(--ink-2); margin-bottom: 14px; min-height: 40px; }
.d-card .meta { display: flex; align-items: center; justify-content: space-between; }
.d-card .num {
  font-size: 12.5px; font-weight: 700; color: var(--cinnabar);
  border: 1px solid rgba(196,61,44,.35); border-radius: 999px;
  padding: 2px 11px; background: rgba(196,61,44,.05);
}
.d-card .more { font-size: 13px; color: var(--ink-3); }

/* ================= 卡片网格（旧兼容） ================= */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.card:hover {
  border-color: var(--cinnabar);
  box-shadow: var(--shadow-cin);
  transform: translateY(-2px);
}
.card .num { font-size: 13px; letter-spacing: 2px; color: var(--gold); margin-bottom: 10px; font-weight: 600; }
.card h3 { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }
.card .more { display: inline-block; margin-top: 14px; font-size: 14px; color: var(--cinnabar); font-weight: 600; }
.card .more:hover { color: var(--cinnabar-deep); }

/* ================= 实力带（深墨区块） ================= */
.power-band {
  background: var(--ink-band);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.power-band::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(237,231,218,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(237,231,218,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 90% at 80% 10%, #000 15%, transparent 75%);
}
.power-band::after {
  content: "DDW"; position: absolute; right: 2%; bottom: -40px;
  font-size: 220px; font-weight: 900; color: rgba(237,231,218,.04);
  line-height: 1; user-select: none;
}
.power-inner { position: relative; max-width: 1200px; margin: 0 auto; padding: 0 4vw; }
.power-head { max-width: 640px; margin-bottom: 52px; }
.power-head .seal { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.power-head .seal .stamp {
  width: 34px; height: 34px; background: var(--gold); color: var(--ink-band);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 900; border-radius: 7px; transform: rotate(-3deg);
}
.power-head .seal span { font-size: 13px; font-weight: 700; letter-spacing: .22em; color: var(--gold); }
.power-head h2 { color: var(--text-on-ink); font-size: clamp(28px, 3.4vw, 38px); font-weight: 900; margin-bottom: 14px; }
.power-head h2 em { font-style: normal; color: var(--gold); }
.power-head p { color: rgba(237,231,218,.65); font-size: 15px; }
.power-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.power-item {
  background: rgba(237,231,218,.05);
  border: 1px solid rgba(237,231,218,.14);
  border-radius: 12px;
  padding: 24px 20px;
  transition: all .25s;
}
.power-item:hover {
  background: rgba(237,231,218,.09);
  transform: translateY(-3px);
  border-color: rgba(201,160,99,.5);
}
.power-item .no { font-size: 12px; font-weight: 700; color: var(--gold); letter-spacing: .15em; margin-bottom: 12px; }
.power-item b { display: block; color: var(--text-on-ink); font-size: 15.5px; margin-bottom: 7px; }
.power-item span { font-size: 12.5px; color: rgba(237,231,218,.55); line-height: 1.7; }

/* ================= 行业套件 ================= */
.industry-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.i-card {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: all .3s;
}
.i-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--gold); }
.i-card .stamp {
  display: inline-flex; width: 42px; height: 42px;
  background: var(--gold); color: var(--paper);
  border-radius: 8px; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 900; margin-bottom: 14px; transform: rotate(-3deg);
}
.i-card h4 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.i-card p { font-size: 13.5px; color: var(--ink-2); }

/* ================= 丰俭由人 ================= */
.tier-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tier-card {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all .3s;
  position: relative;
}
.tier-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.tier-card .tag {
  display: inline-block; font-size: 12px; font-weight: 800;
  border-radius: 999px; padding: 3px 14px; margin-bottom: 14px; letter-spacing: .1em;
}
.tier-card.min .tag { background: rgba(196,61,44,.1); color: var(--cinnabar); border: 1px solid rgba(196,61,44,.3); }
.tier-card.mid .tag { background: rgba(62,92,118,.1); color: var(--daiblue); border: 1px solid rgba(62,92,118,.3); }
.tier-card.full .tag { background: rgba(201,160,99,.12); color: var(--gold-deep); border: 1px solid rgba(201,160,99,.4); }
.tier-card h4 { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.tier-card p { font-size: 13.5px; color: var(--ink-2); }
.tier-card .tier-rule { height: 2px; border-radius: 2px; margin-top: 20px; }
.tier-card.min .tier-rule { background: linear-gradient(90deg, var(--cinnabar), transparent); }
.tier-card.mid .tier-rule { background: linear-gradient(90deg, var(--daiblue), transparent); }
.tier-card.full .tier-rule { background: linear-gradient(90deg, var(--gold), transparent); }

/* ================= CTA 区 ================= */
.cta-band {
  max-width: 1200px;
  margin: 0 auto 90px;
  background: var(--ink-band);
  border-radius: 20px;
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(196,61,44,.28), transparent 65%);
  top: -140px; right: -80px;
}
.cta-band::after {
  content: "按需装配"; position: absolute; left: 24px; bottom: 18px;
  font-size: 15px; letter-spacing: .35em; color: rgba(237,231,218,.18); font-weight: 700;
  writing-mode: vertical-lr;
}
.cta-band h2 { color: var(--text-on-ink); font-size: clamp(24px, 3vw, 34px); font-weight: 900; margin-bottom: 12px; position: relative; }
.cta-band h2 em { font-style: normal; color: var(--gold); }
.cta-band .hero-actions { justify-content: center; }
.cta-band p { color: rgba(237,231,218,.7); font-size: 15px; margin-bottom: 28px; position: relative; max-width: 560px; margin-left: auto; margin-right: auto; line-height: 1.9; }

/* 旧 CTA 兼容 */
.cta-band.plain {
  border-radius: 0;
  margin: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ================= 页脚 ================= */
.site-footer {
  padding: 48px 0 40px;
  border-top: 1px solid var(--line-strong);
  background: var(--ink-band);
  color: rgba(237, 231, 218, .75);
  font-size: 13.5px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 36px; }
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { font-size: 14.5px; font-weight: 600; margin-bottom: 14px; color: var(--text-on-ink); }
.footer-grid ul li { margin-bottom: 8px; }
.footer-grid ul li a { color: rgba(237, 231, 218, .75); }
.footer-grid ul li a:hover { color: var(--gold); }
.footer-desc { line-height: 1.9; color: rgba(237, 231, 218, .75); margin-bottom: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(237, 231, 218, .12);
  padding-top: 20px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px;
  font-size: 12.5px; color: rgba(237, 231, 218, .45);
}
.footer-bottom a { color: rgba(237, 231, 218, .45); }
.footer-bottom a:hover { color: var(--gold); }

/* ================= 双栏 ================= */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.split .list-item { display: flex; gap: 14px; margin-bottom: 22px; }
.split .list-item .dot {
  flex-shrink: 0; width: 8px; height: 8px; border-radius: 50%;
  background: var(--cinnabar); margin-top: 10px;
}
.split .list-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.split .list-item p { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }

/* ================= 流程步骤 ================= */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } }
.step {
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 24px; background: var(--paper-2); position: relative;
  transition: all .25s;
}
.step:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.step .step-num { font-size: 13px; letter-spacing: 2px; color: var(--gold); font-weight: 600; margin-bottom: 10px; }
.step h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--ink-2); line-height: 1.8; }

/* ================= 表格 ================= */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); }
th { font-weight: 600; color: var(--ink); background: var(--paper-2); font-size: 14px; }
td { color: var(--ink-2); }
tr:hover td { background: rgba(196, 61, 44, .03); }

/* ================= 插件标签 ================= */
.plugin-group { margin-bottom: 40px; }
.plugin-group h3 {
  font-size: 17px; font-weight: 600; padding-bottom: 12px;
  border-bottom: 1px solid var(--line); margin-bottom: 18px;
  display: flex; align-items: baseline; gap: 10px;
}
.plugin-group h3 .count { font-size: 13px; color: var(--ink-3); font-weight: 400; }
.plugin-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.plugin-tag {
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 6px;
  font-size: 13.5px; color: var(--ink-2); background: var(--paper-2);
  transition: all .2s;
}
.plugin-tag:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.plugin-tag b { font-weight: 600; }

/* ================= 丰俭旧表 ================= */
.tier-note {
  text-align: center; max-width: 760px; margin: 0 auto 40px;
  font-size: 14.5px; color: var(--ink-2); line-height: 1.95;
  background: var(--paper-2); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 20px 28px;
}
.tier-min { color: var(--cinnabar); font-weight: 600; }
.tier-mid { color: var(--daiblue); font-weight: 600; }
.tier-full { color: var(--gold-deep); font-weight: 600; }
.tier-tag { display: inline-block; font-size: 11.5px; padding: 2px 10px; border-radius: 20px; font-weight: 500; margin-bottom: 6px; }
.tier-tag.min { background: rgba(196,61,44,.1); color: var(--cinnabar); }
.tier-tag.mid { background: rgba(62,92,118,.1); color: var(--daiblue); }
.tier-tag.full { background: rgba(201,160,99,.12); color: var(--gold-deep); }

/* ================= 动效 ================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ================= 三色切换控件（左下角浮动胶囊） ================= */
.demo-switch {
  position: fixed; bottom: 18px; left: 18px; z-index: 999;
  display: flex; gap: 6px; align-items: center;
  background: rgba(250,246,238,.95); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 6px 10px;
  box-shadow: var(--shadow); font-size: 12px;
  backdrop-filter: blur(8px);
}
.demo-switch span { align-self: center; color: var(--ink-3); font-size: 11px; }
.demo-switch button {
  border: 1px solid var(--line-strong); background: var(--paper);
  border-radius: 999px; padding: 3px 12px; cursor: pointer;
  font-size: 12px; color: var(--ink-2); transition: all .2s;
}
.demo-switch button:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.demo-switch button.active { background: var(--cinnabar); color: var(--paper); border-color: var(--cinnabar); }

/* ================= 全站浮动在线客服 ================= */
#ddw-fcs { position: fixed; right: 20px; bottom: 20px; z-index: 9990; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; }
#ddw-fcs .fcs-btn { width: 58px; height: 58px; border-radius: 50%; border: none; cursor: pointer; background: var(--cinnabar); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 18px rgba(196,61,44,.3); transition: all .25s; position: relative; }
#ddw-fcs .fcs-btn:hover { transform: scale(1.06); }
#ddw-fcs .fcs-btn svg { width: 28px; height: 28px; fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
#ddw-fcs .fcs-badge { position: absolute; top: -2px; right: -2px; width: 10px; height: 10px; border-radius: 50%; background: var(--gold); border: 2px solid #fff; }
#ddw-fcs .fcs-window { position: fixed; right: 20px; bottom: 90px; width: 370px; max-width: calc(100vw - 32px); height: 500px; max-height: calc(100vh - 120px); background: var(--paper); border: 1px solid var(--line-strong); border-radius: 14px; box-shadow: var(--shadow); display: none; flex-direction: column; overflow: hidden; }
#ddw-fcs.fcs-open .fcs-window { display: flex; }
#ddw-fcs .fcs-head { background: var(--cinnabar); color: #fff; padding: 14px 18px; display: flex; align-items: center; gap: 10px; cursor: pointer; }
#ddw-fcs .fcs-head .fcs-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 3px rgba(201,160,99,.25); }
#ddw-fcs .fcs-head h4 { margin: 0; font-size: 14.5px; color: #fff; }
#ddw-fcs .fcs-head .fcs-min { margin-left: auto; font-size: 18px; opacity: .85; line-height: 1; }
#ddw-fcs .fcs-body { flex: 1; overflow-y: auto; padding: 14px 16px; background: var(--paper); }
#ddw-fcs .fcs-msg { margin-bottom: 12px; display: flex; }
#ddw-fcs .fcs-msg .b { max-width: 82%; padding: 9px 13px; border-radius: 11px; font-size: 13.5px; line-height: 1.65; white-space: pre-wrap; word-break: break-word; }
#ddw-fcs .fcs-msg.user { justify-content: flex-end; }
#ddw-fcs .fcs-msg.user .b { background: var(--cinnabar); color: #fff; border-bottom-right-radius: 3px; }
#ddw-fcs .fcs-msg.ai .b { background: var(--paper-2); color: var(--ink); border: 1px solid var(--line); border-bottom-left-radius: 3px; }
#ddw-fcs .fcs-msg.sys .b { background: transparent; color: var(--ink-3); font-size: 12px; text-align: center; margin: 0 auto; }
#ddw-fcs .fcs-loading .b { display: inline-flex; gap: 4px; padding: 12px 14px; }
#ddw-fcs .fcs-loading .b i { width: 6px; height: 6px; border-radius: 50%; background: var(--cinnabar); animation: fcsBlink 1.2s infinite; }
#ddw-fcs .fcs-loading .b i:nth-child(2) { animation-delay: .2s; }
#ddw-fcs .fcs-loading .b i:nth-child(3) { animation-delay: .4s; }
@keyframes fcsBlink { 0%,80%,100% { opacity: .25; } 40% { opacity: 1; } }
#ddw-fcs .fcs-foot { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); background: var(--paper-2); }
#ddw-fcs .fcs-foot input { flex: 1; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: 13.5px; background: var(--paper); color: var(--ink); outline: none; }
#ddw-fcs .fcs-foot input:focus { border-color: var(--cinnabar); }
#ddw-fcs .fcs-foot button { border: none; border-radius: 8px; padding: 9px 16px; font-size: 13.5px; font-weight: 600; background: var(--cinnabar); color: #fff; cursor: pointer; }
#ddw-fcs .fcs-foot button:disabled { opacity: .55; cursor: not-allowed; }
@media (max-width: 640px) { #ddw-fcs .fcs-window { right: 8px; bottom: 84px; width: calc(100vw - 16px); } }
#ddw-fcs .fcs-attach { background: none; border: none; cursor: pointer; font-size: 20px; padding: 6px 8px; border-radius: 6px; color: var(--ink-3); transition: all .2s; flex-shrink: 0; }
#ddw-fcs .fcs-attach:hover { background: rgba(196, 61, 44, .06); color: var(--cinnabar); }
#ddw-fcs .fcs-btn-text { font-size: 11px; font-weight: 600; margin-left: 4px; white-space: nowrap; }
#ddw-fcs .fcs-btn { display: flex; align-items: center; padding: 0 14px; width: auto; border-radius: 28px; }
#ddw-fcs .fcs-tooltip { position: fixed; right: 88px; bottom: 32px; background: var(--paper-2); border: 1px solid var(--line-strong); border-radius: 12px; padding: 12px 18px; font-size: 13.5px; line-height: 1.6; color: var(--ink); box-shadow: var(--shadow); cursor: pointer; z-index: 9991; animation: fcsTipIn .4s ease; max-width: 260px; }
#ddw-fcs .fcs-tooltip-hide { opacity: 0; pointer-events: none; transition: opacity .4s; }
@keyframes fcsTipIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
#ddw-fcs .fcs-loading-text { font-size: 13px; color: var(--ink-2); margin-left: 8px; }

/* ================= 响应式（新组件） ================= */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { height: 340px; }
  .domains, .industry-row, .tier-row { grid-template-columns: repeat(2, 1fr); }
  .power-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 72px 0; }
}
@media (max-width: 620px) {
  .domains, .industry-row, .tier-row, .power-grid { grid-template-columns: 1fr; }
  .hero { padding: 100px 0 60px; }
  .hero h1 { font-size: 28px; line-height: 1.4; }
  .hero .subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { text-align: center; }
  .section { padding: 56px 0; }
  .sec-head h2, .section-head h2 { font-size: 24px; }
  .cta-band { padding: 40px 24px; margin: 0 16px 60px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .demo-switch { bottom: 10px; left: 10px; padding: 4px 8px; }
}

/* === P0-5: 补充移动端断点 (2026-08-11) === */
@media (max-width: 768px) {
  .hero { padding: 110px 0 56px; }
  .hero h1 { font-size: 30px; }
  .domains, .industry-row, .tier-row, .power-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
  .sec-head h2, .section-head h2 { font-size: 22px; }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .hero { padding: 90px 0 40px; }
  .hero h1 { font-size: 24px; line-height: 1.35; }
  .hero .subtitle { font-size: 14px; }
  .domains, .industry-row, .tier-row, .power-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .section { padding: 40px 0; }
  .sec-head h2, .section-head h2 { font-size: 20px; }
  .cta-band { padding: 32px 16px; margin: 0 8px 40px; }
}
@media (max-width: 360px) {
  .hero h1 { font-size: 20px; }
  .hero .subtitle { font-size: 13px; }
  .card { padding: 12px; }
  .btn { padding: 6px 12px; font-size: 13px; }
  .section { padding: 32px 0; }
}

/* === 补充 contact-card 样式（兼容8月5日HTML） === */
.contact-card { transition: transform .2s, box-shadow .2s; }
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }