/* ==========================================================================
   索强科技 · 企业数据安全与办公自动化服务商
   静态站设计系统
   ========================================================================== */

:root {
  --ink: #0a1a2b;
  --navy: #0f2b47;
  --navy-2: #14395c;
  --teal: #0e9f8e;
  --teal-dark: #0a7a6c;
  --teal-soft: #e6f6f3;
  --amber: #d98324;
  --amber-soft: #fdf3e5;
  --red: #c0392b;

  --bg: #ffffff;
  --surface: #f6f9fb;
  --surface-2: #eef4f8;
  --line: #e2eaf0;
  --line-strong: #cfdce6;

  --text: #1b2a38;
  --text-soft: #55697a;
  --text-mute: #8296a6;
  --on-dark: #eaf2f8;
  --on-dark-soft: #a8c0d4;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(10, 26, 43, .06), 0 2px 8px rgba(10, 26, 43, .04);
  --shadow: 0 4px 12px rgba(10, 26, 43, .06), 0 12px 32px rgba(10, 26, 43, .07);
  --shadow-lg: 0 12px 28px rgba(10, 26, 43, .1), 0 32px 64px rgba(10, 26, 43, .1);

  --wrap: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--teal-dark); text-decoration: none; }
a:hover { color: var(--teal); }

h1, h2, h3, h4 { margin: 0 0 .6em; line-height: 1.3; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 5vw, 50px); letter-spacing: -.025em; }
h2 { font-size: clamp(24px, 3.2vw, 34px); letter-spacing: -.02em; }
h3 { font-size: clamp(18px, 2vw, 21px); }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }
.wrap--narrow { max-width: 820px; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; gap: 26px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 11px; flex: none; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 17px; font-weight: 800; letter-spacing: .02em; }
.brand-text i {
  font-style: normal; font-size: 10.5px; color: var(--text-mute);
  letter-spacing: .06em; margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 3px; margin-left: auto; }
.nav a {
  padding: 8px 13px; border-radius: 8px; font-size: 14.5px;
  color: var(--text-soft); font-weight: 500; transition: background .15s, color .15s;
  white-space: nowrap;
}
.nav a:hover { background: var(--surface-2); color: var(--ink); }
.nav a.is-active { color: var(--teal-dark); background: var(--teal-soft); font-weight: 600; }

.header-cta {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 9px;
  background: var(--navy); color: #fff; font-size: 14px; font-weight: 600;
  transition: background .15s, transform .15s;
}
.header-cta:hover { background: var(--navy-2); color: #fff; transform: translateY(-1px); }

.nav-toggle {
  display: none; margin-left: auto;
  width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 9px;
  background: #fff; cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: 10px; font-size: 15.5px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .16s; line-height: 1.4;
}
.btn--primary { background: var(--teal); color: #fff; box-shadow: 0 6px 18px rgba(14, 159, 142, .28); }
.btn--primary:hover { background: var(--teal-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(14, 159, 142, .34); }
.btn--ghost { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .3); }
.btn--ghost:hover { background: rgba(255, 255, 255, .16); color: #fff; }
.btn--outline { background: #fff; color: var(--navy); border-color: var(--line-strong); }
.btn--outline:hover { border-color: var(--navy); color: var(--navy); transform: translateY(-2px); }

.btn-row { display: flex; flex-wrap: wrap; gap: 13px; }

/* ---------- 区块 ---------- */
.section { padding: clamp(56px, 7vw, 92px) 0; }
.section--surface { background: var(--surface); }
.section--tight { padding: clamp(40px, 5vw, 64px) 0; }

.section-head { max-width: 760px; margin-bottom: clamp(30px, 4vw, 48px); }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .12em;
  color: var(--teal-dark); text-transform: uppercase; margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--teal); border-radius: 2px; }
.section-head--center .eyebrow::before { display: none; }

.lede { font-size: 17px; color: var(--text-soft); line-height: 1.85; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(155deg, #08203a 0%, #0f2b47 45%, #11405f 100%);
  color: var(--on-dark);
  padding: clamp(64px, 9vw, 118px) 0 clamp(56px, 8vw, 100px);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(120% 90% at 78% 12%, #000 0%, transparent 68%);
  -webkit-mask-image: radial-gradient(120% 90% at 78% 12%, #000 0%, transparent 68%);
}
.hero::after {
  content: ""; position: absolute; width: 620px; height: 620px; right: -180px; top: -240px;
  background: radial-gradient(circle, rgba(14, 159, 142, .34), transparent 66%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; max-width: 840px; }
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero h1 em {
  font-style: normal; display: block;
  background: linear-gradient(100deg, #6fe3d2, #37c6b1);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 15px; border-radius: 999px; margin-bottom: 24px;
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .18);
  font-size: 13px; color: #cfe4f1; font-weight: 500;
}
.hero__badge i { width: 6px; height: 6px; border-radius: 50%; background: #37c6b1; flex: none; }
.hero__sub {
  font-size: clamp(16px, 1.9vw, 19.5px); color: #b9d1e2;
  line-height: 1.9; margin-bottom: 34px; max-width: 700px;
}
.hero__sub strong { color: #fff; font-weight: 600; }
.hero__note { margin-top: 26px; font-size: 13.5px; color: var(--on-dark-soft); }

/* 首屏三层速览 */
.hero__layers {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin-top: clamp(38px, 5vw, 58px);
}
.hero-layer {
  padding: 20px 20px 22px; border-radius: var(--radius);
  background: rgba(255, 255, 255, .055);
  border: 1px solid rgba(255, 255, 255, .12);
  transition: background .2s, transform .2s;
}
.hero-layer:hover { background: rgba(255, 255, 255, .1); transform: translateY(-3px); }
.hero-layer__tag {
  font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
  color: #6fe3d2; margin-bottom: 9px;
}
.hero-layer h3 { color: #fff; font-size: 18px; margin-bottom: 7px; }
.hero-layer p { font-size: 13.5px; color: var(--on-dark-soft); line-height: 1.7; margin: 0; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 18px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow-sm);
  transition: transform .18s, box-shadow .18s, border-color .18s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.card h3 { margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-soft); line-height: 1.8; }

.card__icon {
  width: 46px; height: 46px; border-radius: 12px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: var(--teal-soft); color: var(--teal-dark); margin-bottom: 16px;
}
.card__icon svg { width: 23px; height: 23px; }

/* 编号服务卡 */
.svc {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px 24px;
  box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .18s, border-color .18s;
  scroll-margin-top: 90px;
}
.svc:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--teal); }
.svc__no {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  color: var(--teal-dark); background: var(--teal-soft);
  display: inline-block; padding: 3px 9px; border-radius: 6px; margin-bottom: 15px;
  letter-spacing: .06em;
}
.svc h3 { font-size: 18.5px; margin-bottom: 12px; }
.svc dl { margin: 0; display: grid; gap: 11px; }
.svc dt {
  font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--text-mute); text-transform: uppercase; margin-bottom: 3px;
}
.svc dd { margin: 0 0 0; font-size: 14.5px; color: var(--text-soft); line-height: 1.75; }
.svc dd.is-result { color: var(--text); font-weight: 500; }

/* ---------- 三层结构 ---------- */
.layers { display: grid; gap: 18px; }
.layer {
  display: grid; grid-template-columns: 132px 1fr; gap: 26px; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
  transition: box-shadow .18s, border-color .18s;
}
.layer:hover { box-shadow: var(--shadow); border-color: var(--line-strong); }
.layer::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--line-strong);
}
.layer--base::before { background: #8aa2b5; }
.layer--save::before { background: var(--teal); }
.layer--boost::before { background: var(--amber); }
.layer__label { padding-top: 2px; }
.layer__rank {
  font-size: 11.5px; font-weight: 700; letter-spacing: .12em;
  color: var(--text-mute); display: block; margin-bottom: 6px;
}
.layer__name { display: block; font-size: 19px; font-weight: 800; color: var(--ink); line-height: 1.35; }
.layer--save .layer__name { color: var(--teal-dark); }
.layer--boost .layer__name { color: #a8641a; }
.layer__body p { font-size: 15px; color: var(--text-soft); line-height: 1.85; margin-bottom: 12px; }
.layer__body p:last-child { margin-bottom: 0; }
.layer__meta {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 4px;
  font-size: 13.5px; color: var(--text); background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 13px; font-weight: 500;
}
.layer__meta b { color: var(--teal-dark); font-weight: 700; }

/* ---------- 案例 ---------- */
.case {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; overflow: hidden;
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  border: 1px solid var(--line); background: #fff;
}
.case__main { padding: clamp(28px, 4vw, 46px); }
.case__quote {
  font-size: clamp(15.5px, 1.8vw, 17.5px); line-height: 2; color: var(--text);
  border-left: 3px solid var(--amber); padding-left: 22px; margin: 0 0 22px;
}
.case__quote p { margin-bottom: 14px; }
.case__side {
  background: var(--surface); padding: clamp(28px, 4vw, 46px);
  border-left: 1px solid var(--line);
}
.case__side h4 { font-size: 15px; margin-bottom: 16px; color: var(--ink); }
.why-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.why-list li { position: relative; padding-left: 26px; font-size: 14.5px; color: var(--text-soft); line-height: 1.8; }
.why-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 8px; height: 8px; border-radius: 2px; background: var(--amber);
  transform: rotate(45deg);
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 10px; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  overflow: hidden; transition: border-color .16s, box-shadow .16s;
}
.faq details[open] { border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer; padding: 17px 22px; font-weight: 600; font-size: 15.5px;
  display: flex; align-items: center; gap: 14px; list-style: none; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; margin-left: auto; flex: none;
  width: 9px; height: 9px; border-right: 2px solid var(--text-mute); border-bottom: 2px solid var(--text-mute);
  transform: rotate(45deg) translateY(-2px); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.faq__ans { padding: 0 22px 20px 22px; font-size: 14.8px; color: var(--text-soft); line-height: 1.85; }
.faq__q-tag {
  flex: none; font-size: 11px; font-weight: 800; color: var(--teal-dark);
  background: var(--teal-soft); width: 20px; height: 20px; border-radius: 5px;
  display: inline-flex; align-items: center; justify-content: center; letter-spacing: 0;
}

/* ---------- 工具链 ---------- */
.tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tool {
  display: flex; flex-direction: column; gap: 6px;
  padding: 22px; border-radius: var(--radius); background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: transform .18s, box-shadow .18s;
}
.tool:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.tool__badge {
  font-size: 10.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-mute); margin-bottom: 2px;
}
.tool h3 { font-size: 16.5px; margin-bottom: 4px; }
.tool p { font-size: 13.8px; color: var(--text-soft); line-height: 1.75; margin: 0 0 6px; }
.tool__link { font-size: 13.5px; font-weight: 600; margin-top: auto; padding-top: 6px; }

/* ---------- 内页头部 ---------- */
.page-head {
  background: linear-gradient(150deg, #08203a, #10314f 60%, #11405f);
  color: var(--on-dark); padding: clamp(46px, 6vw, 78px) 0 clamp(40px, 5vw, 64px);
  position: relative; overflow: hidden;
}
.page-head::after {
  content: ""; position: absolute; width: 460px; height: 460px; right: -140px; top: -200px;
  background: radial-gradient(circle, rgba(14, 159, 142, .3), transparent 68%);
}
.page-head__inner { position: relative; z-index: 2; max-width: 780px; }
.page-head h1 { color: #fff; font-size: clamp(26px, 4vw, 42px); margin-bottom: 14px; }
.page-head p { color: #b9d1e2; font-size: 16.5px; line-height: 1.85; margin: 0; }
.crumbs { font-size: 13px; color: var(--on-dark-soft); margin-bottom: 18px; }
.crumbs a { color: #9fc0d8; }
.crumbs a:hover { color: #fff; }
.crumbs span { margin: 0 8px; opacity: .5; }

/* ---------- 正文排版 ---------- */
.prose h2 { margin-top: 44px; padding-top: 4px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 30px; }
.prose p, .prose li { color: var(--text-soft); font-size: 15.5px; line-height: 1.9; }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 18px; }
.prose li { margin-bottom: 8px; }

.callout {
  border-radius: var(--radius); padding: 22px 24px; margin: 26px 0;
  border: 1px solid var(--line); background: var(--surface);
  border-left: 4px solid var(--teal);
}
.callout--warn { border-left-color: var(--amber); background: var(--amber-soft); border-color: #f0dcbe; }
/* 浅色底区块内，callout 提为白底，避免与区块底色融在一起 */
.section--surface .callout { background: #fff; border-color: var(--line-strong); }
.section--surface .callout--warn { background: var(--amber-soft); border-color: #f0dcbe; }
.callout h4 { font-size: 15px; margin-bottom: 8px; }
.callout p, .callout li { font-size: 14.8px; color: var(--text-soft); line-height: 1.85; margin-bottom: 6px; }
.callout p:last-child, .callout li:last-child { margin-bottom: 0; }

/* 清单勾选样式（对应"一页服务清单"） */
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.checklist li {
  position: relative; padding-left: 34px; font-size: 15px; color: var(--text-soft); line-height: 1.8;
}
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 17px; height: 17px; border: 1.5px solid var(--line-strong); border-radius: 4px; background: #fff;
}

/* ---------- 对比表 ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); border: 1px solid var(--line); }
table.cmp { width: 100%; border-collapse: collapse; font-size: 14.8px; background: #fff; min-width: 560px; }
table.cmp th, table.cmp td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.cmp thead th { background: var(--surface-2); font-weight: 700; color: var(--ink); font-size: 14px; white-space: nowrap; }
table.cmp tbody tr:last-child td { border-bottom: none; }
table.cmp td:first-child { color: var(--text-mute); font-size: 13.5px; font-weight: 600; white-space: nowrap; }
table.cmp .col-new { background: #f3fbf9; }
table.cmp thead .col-new { background: var(--teal-soft); color: var(--teal-dark); }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(120deg, #0f2b47, #11405f 70%, #12604f);
  border-radius: var(--radius-lg); padding: clamp(32px, 4.5vw, 54px);
  color: var(--on-dark); display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; width: 380px; height: 380px; right: -120px; bottom: -200px;
  background: radial-gradient(circle, rgba(14, 159, 142, .38), transparent 68%);
}
.cta-band__text { position: relative; z-index: 2; }
.cta-band h2 { color: #fff; font-size: clamp(21px, 2.6vw, 28px); margin-bottom: 10px; }
.cta-band p { color: #b9d1e2; font-size: 15.5px; line-height: 1.8; margin: 0; max-width: 620px; }
.cta-band .btn-row { position: relative; z-index: 2; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 22px; align-items: start; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.person { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.person:first-of-type { padding-top: 4px; }
.person:last-of-type { border-bottom: none; padding-bottom: 4px; }
.person__avatar {
  width: 48px; height: 48px; border-radius: 12px; flex: none;
  background: linear-gradient(140deg, var(--navy), var(--teal-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 17px;
}
.person__info b { display: block; font-size: 16px; color: var(--ink); }
.person__info span { font-size: 13.5px; color: var(--text-mute); }
.person__phone {
  margin-left: auto; font-family: var(--mono); font-size: 16.5px; font-weight: 700;
  color: var(--teal-dark); white-space: nowrap;
}
.person__phone small { display: block; font-family: var(--font); font-size: 11.5px; color: var(--text-mute); font-weight: 400; text-align: right; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #08192a; color: var(--on-dark-soft);
  padding: clamp(44px, 5vw, 66px) 0 28px; font-size: 14px;
}
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.1fr; gap: 34px; margin-bottom: 40px; }
.site-footer h4 { color: #fff; font-size: 14.5px; margin-bottom: 15px; letter-spacing: .03em; }
.site-footer a { color: var(--on-dark-soft); }
.site-footer a:hover { color: #6fe3d2; }
.footer-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.footer-brand b { color: #fff; font-size: 17px; font-weight: 800; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-desc { font-size: 13.5px; line-height: 1.85; color: #7d99af; max-width: 330px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 22px;
  display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center;
  font-size: 13px; color: #6e8ba1;
}
.footer-bottom .spacer { margin-left: auto; }
.footer-slogan {
  display: inline-flex; align-items: center; gap: 10px; color: #6fe3d2;
  font-weight: 600; letter-spacing: .06em; font-size: 14px;
}

/* ---------- 实用 ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.tag {
  font-size: 13px; padding: 6px 13px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line); color: var(--text-soft);
}
.tag--strong { background: var(--teal-soft); border-color: #c2e9e2; color: var(--teal-dark); font-weight: 600; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.stat {
  padding: 22px; border-radius: var(--radius); background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.stat b { display: block; font-size: 26px; color: var(--teal-dark); letter-spacing: -.02em; margin-bottom: 4px; }
.stat span { font-size: 14px; color: var(--text-soft); }

.divider { height: 1px; background: var(--line); margin: 40px 0; border: 0; }

.notes-list { display: grid; gap: 12px; }
.note-item {
  display: flex; align-items: center; gap: 18px; padding: 20px 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color .16s, transform .16s;
}
.note-item:hover { border-color: var(--line-strong); transform: translateX(3px); }
.note-item__tag {
  flex: none; font-size: 11.5px; font-weight: 700; color: var(--teal-dark);
  background: var(--teal-soft); padding: 5px 11px; border-radius: 6px;
}
.note-item__title { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.note-item__arrow { margin-left: auto; color: var(--text-mute); flex: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .tools { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .site-header.is-open .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 3px;
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 12px 22px 20px; box-shadow: var(--shadow);
  }
  .site-header.is-open .nav a { padding: 12px 14px; font-size: 15.5px; }
  .hero__layers { grid-template-columns: 1fr; }
  .case { grid-template-columns: 1fr; }
  .case__side { border-left: none; border-top: 1px solid var(--line); }
  .cta-band { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 15.5px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .tools { grid-template-columns: 1fr; }
  .layer { grid-template-columns: 1fr; gap: 14px; padding: 24px 22px; }
  .layer__label { display: flex; align-items: baseline; gap: 10px; }
  .layer__rank { margin-bottom: 0; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .brand-text i { display: none; }
  .person { flex-wrap: wrap; }
  .person__phone { margin-left: 0; width: 100%; padding-left: 64px; }
  .person__phone small { text-align: left; }
}

/* ---------- 首屏入场（纯 CSS，不影响组件交互） ---------- */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}
.hero__badge, .hero h1, .hero__sub, .hero .btn-row, .hero__note {
  animation: riseIn .62s cubic-bezier(.22, .68, .36, 1) both;
}
.hero h1 { animation-delay: .06s; }
.hero__sub { animation-delay: .12s; }
.hero .btn-row { animation-delay: .18s; }
.hero__note { animation-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .hero__badge, .hero h1, .hero__sub, .hero .btn-row, .hero__note { animation: none; }
}

/* ---------- 打印（对应"给客户看的一页服务清单"） ---------- */
@media print {
  .site-header, .site-footer, .cta-band, .btn-row, .nav-toggle, .print-hide { display: none !important; }
  body { font-size: 11pt; color: #000; background: #fff; }
  .section, .section--surface, .section--tight { padding: 0 0 12pt; background: #fff; }
  .page-head { background: #fff !important; color: #000; padding: 0 0 10pt; }
  .page-head::after { display: none; }
  .page-head h1 { color: #000; font-size: 20pt; }
  .page-head p, .crumbs { color: #444; }
  .crumbs span { display: none; }
  .card, .svc, .layer, .tool, .callout, .faq details { break-inside: avoid; page-break-inside: avoid; box-shadow: none !important; border-color: #bbb; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr 1fr; gap: 10pt; }
  .table-wrap { border-color: #bbb; }
  a { color: #000; text-decoration: none; }
  .svc:hover, .card:hover, .layer:hover, .tool:hover { transform: none; }
}

/* ---------- 细节兜底 ---------- */
.svc dl > div { margin: 0; }
.svc dd a, .layer__meta a { font-weight: 600; }
.table-wrap + .callout { margin-top: 26px; }