/* ============================================================
   成都凡策数据科技 · 全站样式
   主色：深蓝 #0d2b4e / 亮蓝 #1668dc / 橙 #ff7a45 / 青 #00a8c0
   移动端优先，无外部依赖
   ============================================================ */

:root {
  --navy: #0d2b4e;
  --navy-deep: #0a2240;
  --blue: #1668dc;
  --teal: #00a8c0;
  --orange: #ff7a45;
  --ink: #22303e;
  --muted: #5c6b7a;
  --line: #e3e9f0;
  --bg-alt: #f4f7fa;
  --good: #1f9d5b;
  --bad: #d64545;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 15px;
  line-height: 1.7;
}

img { max-width: 100%; height: auto; }
a { color: var(--blue); text-decoration: none; }
ul { list-style: none; }
em { font-style: normal; color: var(--orange); }
small { font-size: 13px; color: var(--muted); }

::selection { background: rgba(22, 104, 220, .18); }

/* ---------- 布局 ---------- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.sec { padding: 60px 0; }
.sec-alt { background: var(--bg-alt); }

.mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.mt32 { margin-top: 32px; } .mt40 { margin-top: 40px; }
.mb16 { margin-bottom: 16px; } .mb32 { margin-bottom: 32px; }
.tc { text-align: center; }
.muted { color: var(--muted); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: 1080px; margin: 0 auto; padding: 0 20px;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--navy); font-weight: 500; font-size: 17px; }
.brand-logo { width: 31px; height: 36px; object-fit: contain; }
.brand-logo-sm { width: 27px; height: 32px; }
.burger {
  display: block; background: none; border: 0; font-size: 22px;
  color: var(--navy); cursor: pointer; padding: 6px 10px; line-height: 1;
}
.nav-links { display: none; }
.nav-links.open {
  display: block; position: absolute; top: 60px; left: 0; right: 0;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 8px 20px 16px; box-shadow: 0 12px 24px rgba(13, 43, 78, .08);
}
.nav-links a {
  display: block; padding: 11px 4px; color: var(--ink); font-size: 15px;
  border-bottom: 1px solid var(--line);
}
.nav-links a:last-child { border-bottom: 0; }
.nav-links a.on { color: var(--blue); font-weight: 500; }
.nav-tel { display: block; padding: 11px 4px; font-size: 15px; color: var(--orange) !important; font-weight: 500; }

@media (min-width: 880px) {
  .burger { display: none; }
  .nav-links { display: flex; align-items: center; gap: 26px; }
  .nav-links a { display: inline; padding: 0; border: 0; font-size: 15px; color: var(--ink); }
  .nav-links a:hover { color: var(--blue); }
  .nav-links a.on { color: var(--blue); }
  .nav-tel { display: inline; padding: 0; font-size: 15px; }
}

/* ---------- 首屏 ---------- */
.hero {
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(22, 104, 220, .35), transparent 60%),
    linear-gradient(160deg, #10365e 0%, var(--navy) 55%, #0a2240 100%);
  color: #fff; padding: 64px 0 72px;
}
.badge {
  display: inline-block; font-size: 13px; color: #cfe3ff;
  border: 1px solid rgba(207, 227, 255, .35); border-radius: 999px;
  padding: 5px 14px; margin-bottom: 22px; letter-spacing: .5px;
}
.hero h1 { font-size: clamp(28px, 5.4vw, 44px); font-weight: 500; line-height: 1.35; }
.lead { margin-top: 18px; font-size: 16px; color: #c9d8ea; max-width: 640px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

.btn {
  display: inline-block; padding: 12px 28px; border-radius: 8px;
  font-size: 16px; font-weight: 500; cursor: pointer; transition: transform .15s, opacity .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { opacity: .92; }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .55); color: #fff; }
.btn-ghost:hover { border-color: #fff; }
.btn-line { border: 1px solid var(--blue); color: var(--blue); font-size: 14px; padding: 9px 20px; }
.btn-line:hover { background: rgba(22, 104, 220, .06); }
/* 号码以纯文本展示时（span，不可点击），去掉链接态反馈 */
span.btn { cursor: default; }
span.btn:hover { transform: none; }
span.btn-ghost:hover { border-color: rgba(255, 255, 255, .55); }

.hero-stats {
  display: flex; flex-wrap: wrap; gap: 12px 40px;
  margin-top: 44px; padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, .14);
}
.hero-stats b { display: block; font-size: 21px; font-weight: 500; color: #fff; }
.hero-stats span { font-size: 13px; color: #9fb6cd; }

/* ---------- 标题区 ---------- */
.sec-head { max-width: 760px; margin: 0 auto 40px; text-align: center; }
.sec-tag {
  display: inline-block; color: var(--orange); font-size: 13px;
  font-weight: 500; letter-spacing: 3px; margin-bottom: 12px;
}
.sec-head h2, .sec > .wrap > h2 { font-size: clamp(22px, 3.6vw, 30px); font-weight: 500; color: var(--navy); line-height: 1.4; }
.sec-sub { margin-top: 12px; color: var(--muted); font-size: 15px; }
.logo-hero { display: block; margin: 0 auto 18px; width: 118px; height: 139px; object-fit: contain; }

/* ---------- 网格与卡片 ---------- */
.grid { display: grid; gap: 16px; }
.g2, .g3, .g4 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .g2 { grid-template-columns: 1fr 1fr; } .g3, .g4 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .g3 { grid-template-columns: repeat(3, 1fr); } .g4 { grid-template-columns: repeat(4, 1fr); } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 22px 22px 20px;
}
.sec-alt .card { border-color: #dde5ee; }
.card h3 { font-size: 16.5px; font-weight: 500; color: var(--navy); margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--muted); }
.ico { font-size: 30px; line-height: 1; margin-bottom: 12px; }

/* ---------- 案例卡（图 + 数字，不跳转） ---------- */
.case-card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; margin: 0;
  box-shadow: 0 1px 2px rgba(13, 43, 78, .04), 0 10px 26px -16px rgba(13, 43, 78, .12);
  transition: transform .18s ease, box-shadow .18s ease;
}
.case-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 2px 4px rgba(13, 43, 78, .05), 0 16px 34px -16px rgba(13, 43, 78, .2);
}
.case-card img {
  display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover;
}
.case-card figcaption { padding: 16px 18px 18px; }
.case-num {
  font-size: 32px; font-weight: 600; color: var(--orange);
  line-height: 1.1; letter-spacing: -.5px;
}
.case-cap { font-size: 13px; color: var(--muted); margin-top: 3px; }
.case-card h3 { font-size: 15.5px; font-weight: 500; color: var(--navy); margin-top: 10px; }
@media (min-width: 720px) { .case-num { font-size: 34px; } }

/* ---------- 痛点块 ---------- */
.pain {
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--orange);
  border-radius: 8px; padding: 16px 18px;
}
.pain b { display: block; font-size: 15px; font-weight: 500; color: var(--navy); margin-bottom: 4px; }
.pain span { font-size: 14px; color: var(--muted); }

/* ---------- 提示块 ---------- */
.note {
  background: #eef4fb; border-left: 3px solid var(--blue);
  border-radius: 8px; padding: 16px 20px; font-size: 14.5px; color: var(--ink);
}
.note.warn { background: #fff4ef; border-left-color: var(--orange); }
.note a { font-weight: 500; }

/* ---------- 步骤 ---------- */
.steps { display: grid; gap: 16px; counter-reset: step; }
@media (min-width: 640px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 20px 20px 18px;
}
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-size: 13px; font-weight: 500; color: var(--orange);
  letter-spacing: 1px; margin-bottom: 8px;
}
.step h3 { font-size: 16px; font-weight: 500; color: var(--navy); margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--muted); }

/* ---------- 对比（做 / 不做） ---------- */
.vs { display: grid; gap: 16px; }
@media (min-width: 800px) { .vs { grid-template-columns: 1fr 1fr; } }
.good, .bad { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.good h4, .bad h4 {
  padding: 14px 22px; font-size: 15.5px; font-weight: 500; color: #fff;
}
.good h4 { background: var(--good); }
.bad h4 { background: var(--bad); }
.good ul, .bad ul { padding: 14px 22px 18px; }
.good li, .bad li {
  position: relative; padding: 7px 0 7px 26px; font-size: 14.5px; color: var(--ink);
}
.good li::before {
  content: "✓"; position: absolute; left: 2px; color: var(--good); font-weight: 500;
}
.bad li::before {
  content: "✕"; position: absolute; left: 2px; color: var(--bad); font-weight: 500;
}

/* ---------- 占位 ---------- */
.fill-slot {
  border: 2px dashed #b9c6d4; border-radius: 10px; background: rgba(255, 255, 255, .6);
  color: var(--muted); font-size: 14px; text-align: center; padding: 20px;
}

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-item h3 { font-size: 16.5px; font-weight: 500; color: var(--navy); margin-bottom: 10px; }
.faq-item p { font-size: 14.5px; color: var(--muted); }

/* ---------- CTA 带 ---------- */
.cta-band {
  background:
    radial-gradient(700px 300px at 15% 0%, rgba(22, 104, 220, .3), transparent 60%),
    var(--navy);
  border-radius: 14px; padding: 48px 28px; text-align: center; color: #fff;
}
.cta-band h2 { font-size: clamp(21px, 3.4vw, 28px); font-weight: 500; }
.cta-band p { margin-top: 12px; color: #c9d8ea; font-size: 15px; }
.cta-band .btn-row { justify-content: center; }

/* ---------- 表格 ---------- */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; min-width: 620px; border-collapse: collapse; background: #fff; }
th, td { padding: 13px 16px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-alt); color: var(--navy); font-weight: 500; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.price { color: var(--orange); font-weight: 500; white-space: nowrap; }

/* ---------- 报价套餐 ---------- */
.pk { display: grid; gap: 16px; }
@media (min-width: 720px) { .pk { grid-template-columns: 1fr 1fr; } }
.pk-item {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid #e2eaf3; border-radius: 14px; padding: 28px 24px 22px;
  box-shadow: 0 1px 2px rgba(13, 43, 78, .05), 0 12px 30px -16px rgba(13, 43, 78, .16);
  transition: transform .18s ease, box-shadow .18s ease;
}
.pk-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 2px 4px rgba(13, 43, 78, .06), 0 18px 38px -16px rgba(13, 43, 78, .22);
}
.pk-item::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}
.pk-item.hot { border-color: #ffd3ba; }
.pk-item.hot::before { background: linear-gradient(90deg, var(--orange), #ffb08a); }
.pk-item.hot .pk-tag { color: #d95f1e; background: rgba(255, 122, 69, .1); }
.pk-item ul { margin: 16px 0 22px; flex: 1; }
.pk-item li { position: relative; padding: 6px 0 6px 22px; font-size: 14px; color: var(--ink); }
.pk-item li::before {
  content: ""; position: absolute; left: 2px; top: 14px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--teal);
}
.pk-name { font-size: 17px; font-weight: 500; color: var(--navy); }
.pk-desc { font-size: 13.5px; color: var(--muted); margin-top: 4px; }
.pk-price {
  font-size: 28px; font-weight: 600; color: var(--orange); margin-top: 14px;
  letter-spacing: -.5px;
}
.pk-price small { font-size: 13px; font-weight: 400; color: var(--muted); letter-spacing: 0; }
.pk-item .btn { text-align: center; }
.pk-tag {
  display: inline-block; align-self: flex-start; margin-bottom: 12px;
  font-size: 12px; color: var(--blue);
  background: rgba(22, 104, 220, .08); border-radius: 20px; padding: 3px 11px;
}
.pk-meta {
  margin-top: 0; padding-top: 13px; border-top: 1px dashed var(--line);
  font-size: 13px; color: var(--muted);
}
.pk-meta b { color: var(--navy); font-weight: 500; }

/* ---------- 联系页 ---------- */
.contact-list { margin-top: 8px; }
.contact-list li {
  display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line);
}
.contact-list .k { flex: 0 0 84px; color: var(--muted); font-size: 14px; padding-top: 2px; }
.contact-list .v { font-size: 17px; color: var(--navy); font-weight: 500; }
.contact-list .v small { display: block; font-weight: 400; margin-top: 4px; }
.contact-list .v .tel { color: var(--orange); }
.qr-slot { max-width: 260px; margin: 0 auto; }
.qr-slot .fill-slot { aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; }
.qr-img {
  display: block; width: 100%; height: auto;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 10px; box-sizing: border-box;
}

/* ---------- 页脚 ---------- */
.foot { background: var(--navy-deep); color: #b8c9dc; padding: 52px 0 28px; margin-top: 0; }
.foot-top { display: grid; gap: 32px; }
@media (min-width: 640px) { .foot-top { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .foot-top { grid-template-columns: 1.4fr 1fr 0.8fr 1.2fr; gap: 24px; } }
.foot .brand { color: #fff; font-size: 16px; margin-bottom: 12px; }
.foot-top p { font-size: 13.5px; line-height: 1.8; }
.foot h4 { color: #fff; font-size: 15px; font-weight: 500; margin-bottom: 14px; }
.foot li { padding: 4px 0; font-size: 13.5px; }
.foot a { color: #b8c9dc; }
.foot a:hover { color: #fff; }
.foot-bot {
  margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12);
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between;
  font-size: 13px; color: #8ba3bd;
}
.foot-bot a { color: #8ba3bd; }

/* ---------- 浮动按钮 ---------- */
.float {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  background: var(--orange); color: #fff; font-size: 15px; font-weight: 500;
  padding: 12px 22px; border-radius: 999px;
  box-shadow: 0 6px 18px rgba(255, 122, 69, .4);
}
.float:hover { opacity: .92; }
span.float { cursor: default; }
span.float:hover { opacity: 1; }

/* ---------- 其他 ---------- */
h1, h2, h3, h4 { font-weight: 500; }
.mt16 + .mt16 { margin-top: 12px; }
@media (max-width: 639px) {
  .sec { padding: 44px 0; }
  .hero { padding: 48px 0 56px; }
  .btn-row .btn { flex: 1 1 auto; text-align: center; }
  .cta-band { padding: 38px 20px; }
}
a:focus-visible, button:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ---------- 解决方案页签 ---------- */
.tabs-bar { background: #fff; border-bottom: 1px solid var(--line); scroll-margin-top: 70px; }
.tabs-in {
  max-width: 1080px; margin: 0 auto; padding: 14px 20px;
  display: flex; gap: 8px; flex-wrap: nowrap; overflow-x: auto;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.tabs-in::-webkit-scrollbar { display: none; }
.tabs-hint { max-width: 1080px; margin: 0 auto; padding: 0 20px 13px; font-size: 13px; color: var(--muted); }
.tab {
  flex: 0 0 auto; white-space: nowrap; cursor: pointer;
  font-family: inherit; font-size: 14px; line-height: 1;
  padding: 9px 15px; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  transition: background .15s, border-color .15s, color .15s;
}
.tab:hover { border-color: var(--blue); color: var(--blue); }
.tab.on { background: var(--blue); border-color: var(--blue); color: #fff; }
.tabs-bottom { border-bottom: 0; border-top: 1px solid var(--line); }
.tabs-bottom .tabs-in { padding-top: 22px; }
.tabs-bottom .tabs-hint { padding-bottom: 8px; }
.tab-panel { display: none; padding: 52px 0 56px; }
.tab-panel.on { display: block; }

@media (min-width: 880px) {
  .tabs-in { flex-wrap: wrap; overflow: visible; }
}

/* 四个套餐排成一行（桌面宽屏） */
@media (min-width: 1080px) {
  .pk { grid-template-columns: repeat(4, 1fr); gap: 14px; }
  .pk-item { padding: 22px 16px 20px; }
  .pk-name { font-size: 16px; }
  .pk-desc { font-size: 13px; }
  .pk-price { font-size: 22px; margin-top: 12px; }
  .pk-price small { font-size: 12px; }
  .pk-tag { font-size: 11.5px; padding: 3px 9px; }
  .pk-item li { font-size: 13.5px; padding: 5px 0 5px 18px; }
  .pk-item li::before { top: 12px; width: 6px; height: 6px; }
  .pk-meta { font-size: 12.5px; }
  .pk-item .btn-line { font-size: 13.5px; padding: 9px 12px; }
}