/* ============================================================
   托单单 · 张诗林资源库 · 官网样式
   蓝白配色 / 轻玻璃 / 细网格
   ============================================================ */

:root {
  --bg: #f4f8ff;
  --bg-2: #eaf2ff;
  --card: #ffffff;
  --ink: #0d1b34;
  --ink-2: #33445f;
  --muted: #64748b;
  --dim: #94a3b8;
  --line: #e2ebfa;
  --line-2: #eff5ff;
  --blue: #2563eb;
  --blue-d: #1d4ed8;
  --blue-l: #3b82f6;
  --sky: #22d3ee;
  --ok: #16a34a;
  --radius: 18px;
  --shadow-s: 0 2px 8px rgba(20, 48, 100, .05);
  --shadow: 0 14px 40px rgba(20, 48, 100, .08);
  --shadow-l: 0 28px 70px rgba(20, 48, 100, .12);
  --wrap: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration: none; transition: color .18s, opacity .18s; }
a:hover { color: var(--blue-d); }

h1, h2, h3, h4 {
  color: var(--ink);
  margin: 0;
  line-height: 1.25;
  letter-spacing: -.01em;
  font-weight: 700;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ------------------------------ 顶部导航 ------------------------------ */

.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .78);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  transition: border-color .2s, box-shadow .2s;
}
.site-head.stuck { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(22, 51, 105, .05); }

.head-in {
  height: 68px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; letter-spacing: .2px; }
.logo:hover { color: var(--ink); }
.logo-mark {
  width: 34px; height: 34px; flex: none;
  border-radius: 10px;
  display: grid; place-items: center;
  color: #fff; font-size: 15px; font-weight: 800;
  background: linear-gradient(140deg, #2563eb 10%, #3b82f6 55%, #22d3ee 100%);
  box-shadow: 0 8px 20px rgba(37, 99, 235, .32);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text b { font-size: 15.5px; font-weight: 750; }
.logo-text span { font-size: 9.5px; letter-spacing: .16em; color: var(--dim); font-weight: 600; }

.nav { display: flex; align-items: center; gap: 2px; margin-left: 6px; }
.nav a {
  padding: 8px 14px; border-radius: 9px;
  color: var(--ink-2); font-size: 14.5px; font-weight: 500;
}
.nav a:hover { background: var(--bg-2); color: var(--blue); }

.head-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.head-tel { font-size: 13px; color: var(--muted); font-family: var(--mono); letter-spacing: .02em; text-decoration: none; }
a.head-tel:hover { color: var(--blue); }

.burger {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line); border-radius: 10px;
  background: #fff; cursor: pointer;
  padding: 0; place-items: center;
}
.burger span {
  display: block; width: 17px; height: 1.8px; background: var(--ink);
  border-radius: 2px; position: relative;
}
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.8px;
  background: var(--ink); border-radius: 2px;
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }

/* ------------------------------ 按钮 ------------------------------ */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 44px; padding: 0 20px;
  border-radius: 11px; border: 1px solid var(--line);
  background: #fff; color: var(--ink);
  font-family: inherit; font-size: 14.5px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: transform .16s, box-shadow .16s, background .16s, border-color .16s, color .16s;
}
.btn:hover { transform: translateY(-1px); border-color: #c9dcf8; box-shadow: var(--shadow-s); color: var(--ink); }
.btn:active { transform: translateY(0); }
.btn-sm { height: 38px; padding: 0 15px; font-size: 13.5px; border-radius: 9px; }

.btn-pri {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border-color: transparent; color: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .26);
}
.btn-pri:hover { color: #fff; box-shadow: 0 14px 30px rgba(37, 99, 235, .32); filter: brightness(1.04); }

.btn-ghost { background: rgba(255, 255, 255, .7); }
.btn-line { background: transparent; border-color: #c9dcf8; color: var(--blue-d); }
.btn-line:hover { background: #f2f7ff; color: var(--blue-d); }

.btn .arr { transition: transform .18s; }
.btn:hover .arr { transform: translateX(3px); }

/* ------------------------------ 通用版式 ------------------------------ */

.section { padding: 92px 0; position: relative; }
.section-tight { padding: 64px 0; }
.section-alt { background: linear-gradient(180deg, #eef5ff 0%, #f7faff 100%); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 650; letter-spacing: .12em;
  color: var(--blue-d); text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: ""; width: 18px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, #2563eb, #22d3ee);
}

.sec-head { max-width: 720px; margin-bottom: 44px; }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.02em; }
.sec-head p { margin-top: 14px; color: var(--muted); font-size: 15.5px; }

.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }
.sec-head.center .eyebrow::after {
  content: ""; width: 18px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, #22d3ee, #2563eb);
}

/* ------------------------------ Hero ------------------------------ */

.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 86px;
  background:
    radial-gradient(900px 520px at 8% -10%, #dbe8ff 0%, transparent 62%),
    radial-gradient(820px 480px at 96% 0%, #e0f6ff 0%, transparent 58%),
    linear-gradient(180deg, #f7faff 0%, var(--bg) 100%);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(37, 99, 235, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37, 99, 235, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(760px 460px at 50% 18%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(760px 460px at 50% 18%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero-in {
  position: relative;
  display: grid;
  grid-template-columns: 1.03fr .97fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 13px 6px 8px;
  border-radius: 99px;
  background: #fff; border: 1px solid #dbe8fb;
  box-shadow: var(--shadow-s);
  font-size: 12.8px; font-weight: 600; color: var(--ink-2);
  margin-bottom: 22px;
}
.hero-badge i {
  width: 8px; height: 8px; border-radius: 50%; background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, .14);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(34, 197, 94, .12); }
  50% { box-shadow: 0 0 0 7px rgba(34, 197, 94, .04); }
}

.hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.035em;
  font-weight: 780;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #1d4ed8 6%, #3b82f6 48%, #06b6d4 96%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  margin-top: 22px;
  max-width: 520px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--muted);
}
.hero-cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note {
  margin-top: 26px;
  display: flex; flex-wrap: wrap; gap: 8px 22px;
  font-size: 13px; color: var(--dim);
}
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note svg { flex: none; }

/* Hero 右侧：产品界面抽象图 */
.hero-art { position: relative; }
.hero-art::after {
  content: "";
  position: absolute; inset: 8% -6% 4% 6%;
  background: linear-gradient(135deg, rgba(37, 99, 235, .16), rgba(34, 211, 238, .10));
  filter: blur(34px);
  z-index: 0;
  border-radius: 40px;
}
.mock {
  position: relative; z-index: 1;
  border-radius: 16px;
  background: #fff;
  border: 1px solid #e4edfb;
  box-shadow: var(--shadow-l);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
  transition: transform .5s ease;
}
.hero-art:hover .mock { transform: perspective(1400px) rotateY(-2deg) rotateX(0deg); }
.mock-bar {
  height: 40px; display: flex; align-items: center; gap: 7px;
  padding: 0 14px;
  background: linear-gradient(180deg, #fbfdff, #f4f8ff);
  border-bottom: 1px solid var(--line-2);
}
.mock-bar i { width: 9px; height: 9px; border-radius: 50%; background: #dbe6f7; }
.mock-bar i:nth-child(1) { background: #fda4a4; }
.mock-bar i:nth-child(2) { background: #fcd9a3; }
.mock-bar i:nth-child(3) { background: #a7e8bd; }
.mock-url {
  margin-left: 8px; flex: 1;
  height: 21px; border-radius: 6px;
  background: #eef4ff;
  font-size: 10.5px; color: #7e90ab; display: flex; align-items: center;
  padding: 0 9px; font-family: var(--mono); letter-spacing: .02em;
}
.mock-body { display: grid; grid-template-columns: 108px 1fr; min-height: 306px; }
.mock-side {
  border-right: 1px solid var(--line-2);
  padding: 14px 10px;
  background: #fafcff;
  display: flex; flex-direction: column; gap: 4px;
}
.mock-side b {
  display: flex; align-items: center; gap: 7px;
  font-size: 10.5px; font-weight: 600; color: #64748b;
  padding: 7px 9px; border-radius: 7px;
}
.mock-side b.on { background: #eaf2ff; color: var(--blue-d); font-weight: 700; }
.mock-side b u { width: 6px; height: 6px; border-radius: 2px; background: #c3d6f4; }
.mock-side b.on u { background: var(--blue); }
.mock-main { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.mock-h { display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.mock-h strong { font-size: 12.5px; color: var(--ink); }
.mock-chip {
  font-size: 9.5px; padding: 2px 7px; border-radius: 99px;
  background: #eaf2ff; color: #1d4ed8; font-weight: 650;
}
.mock-task {
  display: flex; align-items: center; gap: 9px;
  border: 1px solid var(--line-2); border-radius: 9px;
  padding: 8px 10px; background: #fff;
}
.mock-thumb {
  width: 30px; height: 30px; flex: none; border-radius: 7px;
  background: linear-gradient(135deg, #dbeafe, #e0f2fe);
  display: grid; place-items: center; font-size: 11px; color: #3b82f6; font-weight: 700;
}
.mock-task-t { flex: 1; min-width: 0; }
.mock-task-t b { display: block; font-size: 10.5px; color: #33445f; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-task-t span { display: block; font-size: 9px; color: #9aa9bf; }
.mock-state {
  font-size: 9px; font-weight: 700; padding: 2px 7px; border-radius: 99px; white-space: nowrap;
}
.st-ok { background: #e9f9ef; color: #15803d; }
.st-run { background: #eaf2ff; color: #1d4ed8; }
.st-wait { background: #f4f6fa; color: #7c8aa0; }

.mock-float {
  position: absolute; z-index: 2;
  background: #fff; border: 1px solid #e4edfb; border-radius: 12px;
  box-shadow: 0 16px 38px rgba(20, 48, 100, .14);
  padding: 9px 13px;
  display: flex; align-items: center; gap: 9px;
  font-size: 11.5px; color: var(--ink-2); font-weight: 600;
}
.mock-float b { color: var(--ok); font-size: 12.5px; }
.mf-1 { left: -22px; bottom: 34px; animation: floaty 6s ease-in-out infinite; }
.mf-2 { right: -26px; top: 96px; animation: floaty 7s ease-in-out .8s infinite; }
.mf-dot { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: #eaf2ff; color: var(--blue); font-size: 13px; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ------------------------------ 数据条 ------------------------------ */

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-top: -34px;
  position: relative; z-index: 5;
}
.stat { padding: 22px 24px; border-right: 1px solid var(--line-2); }
.stat:last-child { border-right: none; }
.stat b {
  display: block; font-size: 27px; line-height: 1.2; color: var(--ink);
  font-weight: 750; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.stat b small { font-size: 13px; font-weight: 650; color: var(--blue); margin-left: 3px; }
.stat span { font-size: 12.8px; color: var(--muted); }

/* ------------------------------ 产品卡片 ------------------------------ */

.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.pcard {
  position: relative;
  display: flex; flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px 20px;
  box-shadow: var(--shadow-s);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  overflow: hidden;
}
.pcard::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--pc, #2563eb), var(--pc-2, #93c5fd));
  opacity: .9;
}
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #d7e5fb; }
.pcard.featured { background: linear-gradient(180deg, #fbfdff 0%, #fff 46%); }

.pc-top { display: flex; align-items: flex-start; gap: 13px; margin-bottom: 15px; }
.pc-icon {
  width: 46px; height: 46px; flex: none; border-radius: 13px;
  display: grid; place-items: center;
  color: #fff; font-size: 20px; font-weight: 750;
  background: linear-gradient(140deg, var(--pc, #2563eb), var(--pc-2, #60a5fa));
  box-shadow: 0 10px 22px rgba(37, 99, 235, .26);
}
.pc-name { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pc-name h3 { font-size: 18.5px; }
.pc-en { font-size: 10.5px; letter-spacing: .1em; color: var(--dim); text-transform: uppercase; font-weight: 650; margin-top: 2px; }

.badge {
  font-size: 10.5px; font-weight: 700; letter-spacing: .02em;
  padding: 2px 8px; border-radius: 99px;
  background: #eaf2ff; color: #1d4ed8; border: 1px solid #d4e3fb;
}
.badge-beta { background: #e8f8ff; color: #0e7490; border-color: #c8eefb; }
.badge-plan { background: #f3f4ff; color: #4f46e5; border-color: #e0e2fe; }

.pc-desc { font-size: 14px; color: var(--muted); line-height: 1.8; min-height: 76px; }
.pc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0 18px; }
.pc-tags span {
  font-size: 11.5px; padding: 3px 9px; border-radius: 7px;
  background: #f4f8ff; color: #526480; border: 1px solid var(--line-2);
}
.pc-foot {
  margin-top: auto; padding-top: 15px; border-top: 1px solid var(--line-2);
  display: flex; align-items: center; gap: 10px;
}
.pc-ver { font-size: 11.5px; color: var(--dim); font-family: var(--mono); }
.pc-foot .btn { margin-left: auto; }
.pc-foot .link-more { font-size: 13px; font-weight: 600; }

/* 定制开发卡（通栏） */
.pcard.cta-card {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 32px;
  background: linear-gradient(120deg, #0f2a5c 0%, #1e40af 58%, #2563eb 100%);
  border-color: transparent;
  color: #dbeafe;
  padding: 26px 30px;
}
.pcard.cta-card::before { display: none; }
.pcard.cta-card h3 { color: #fff; font-size: 19px; flex: none; }
.pcard.cta-card p { margin-top: 0; font-size: 13.8px; line-height: 1.8; color: #c7dbff; flex: 1; min-width: 260px; }
.pcard.cta-card .btn {
  margin-top: 0; align-self: center; flex: none;
  background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); color: #fff;
  backdrop-filter: blur(6px);
}
.pcard.cta-card .btn:hover { background: rgba(255, 255, 255, .22); color: #fff; }

/* ------------------------------ 能力 ------------------------------ */

.caps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cap {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 22px 20px;
  transition: transform .2s, box-shadow .2s;
}
.cap:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.cap-ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(140deg, #eaf2ff, #f0faff);
  border: 1px solid #e2edfd; color: var(--blue);
  margin-bottom: 15px;
}
.cap h4 { font-size: 15.5px; margin-bottom: 7px; }
.cap p { font-size: 13.2px; color: var(--muted); line-height: 1.75; }

/* ------------------------------ 流程 ------------------------------ */

.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }
.flow-item { position: relative; padding: 0 18px 0 0; }
.flow-item::after {
  content: ""; position: absolute; top: 19px; right: 4px; width: calc(100% - 46px);
  height: 1px; background: linear-gradient(90deg, #c9dcf8, #e8f1ff);
}
.flow-item:last-child::after { display: none; }
.flow-num {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center;
  background: #fff; border: 1px solid #d9e7fb; color: var(--blue);
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  box-shadow: var(--shadow-s);
  margin-bottom: 14px;
}
.flow-item h4 { font-size: 15px; margin-bottom: 6px; }
.flow-item p { font-size: 12.8px; color: var(--muted); line-height: 1.7; }

/* ------------------------------ 优势 ------------------------------ */

.why { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: stretch; }
.why-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 24px; box-shadow: var(--shadow-s);
}
.why-card h3 { font-size: 17px; display: flex; align-items: center; gap: 9px; }
.why-card h3 i {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: #eaf2ff; color: var(--blue); font-size: 13px; font-style: normal;
}
.why-card p { margin-top: 11px; font-size: 13.8px; color: var(--muted); line-height: 1.85; }
.why-card ul { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.why-card li { display: flex; gap: 9px; font-size: 13.5px; color: var(--ink-2); }
.why-card li::before {
  content: "✓"; flex: none; width: 17px; height: 17px; border-radius: 50%;
  background: #e9f9ef; color: #15803d; font-size: 10.5px; font-weight: 700;
  display: grid; place-items: center; margin-top: 3px;
}

/* ------------------------------ 关于 ------------------------------ */

.about { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.about p { color: var(--muted); font-size: 15px; line-height: 1.95; }
.about p + p { margin-top: 14px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.about-tags span {
  font-size: 12.5px; padding: 5px 11px; border-radius: 8px;
  background: #fff; border: 1px solid var(--line); color: var(--ink-2);
}
.about-card {
  background: linear-gradient(160deg, #ffffff, #f4f9ff);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.about-card h4 { font-size: 13px; letter-spacing: .06em; color: var(--dim); text-transform: uppercase; margin-bottom: 16px; }
.about-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: 13.5px; }
.about-row:last-child { border-bottom: none; }
.about-row span { color: var(--muted); }
.about-row b { color: var(--ink); font-weight: 650; }
.about-row b a.inline-tel { color: var(--blue); text-decoration: none; font-family: var(--mono); }
.about-row b a.inline-tel:hover { text-decoration: underline; }

/* ------------------------------ 联系 ------------------------------ */

.contact {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0b2049 0%, #13326e 42%, #1d4ed8 100%);
  border-radius: 24px;
  padding: 46px 46px 42px;
  color: #dbeafe;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center;
  box-shadow: 0 30px 70px rgba(16, 45, 100, .28);
}
.contact::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(600px 400px at 20% 0%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(600px 400px at 20% 0%, #000, transparent 75%);
  pointer-events: none;
}
.contact > * { position: relative; }
.contact h2 { color: #fff; font-size: clamp(24px, 3vw, 32px); letter-spacing: -.02em; }
.contact p { margin-top: 14px; color: #b9cdf3; font-size: 14.5px; line-height: 1.9; }
.contact-links { display: flex; flex-direction: column; gap: 10px; }
.clink {
  display: flex; align-items: center; gap: 13px;
  padding: 14px 16px; border-radius: 13px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  color: #e6efff; font-size: 13.8px; font-weight: 600;
  transition: background .18s, transform .18s;
}
.clink:hover { background: rgba(255, 255, 255, .16); color: #fff; transform: translateX(3px); }
.clink i {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  display: grid; place-items: center; font-style: normal; font-size: 15px;
  background: rgba(255, 255, 255, .14);
}
.clink small { display: block; font-size: 11px; font-weight: 500; color: #a9c1ec; margin-top: 1px; }
button.clink {
  width: 100%; text-align: left; cursor: pointer;
  font-family: inherit; line-height: 1.35;
}
button.clink:active { transform: translateX(1px) scale(.995); }
.contact p b { color: #fff; font-weight: 700; }

/* 资源库 */
.res-card { background: #fff; }
.res-ico {
  font-size: 16px; font-weight: 750; color: var(--blue);
  letter-spacing: 0;
}
.res-note {
  margin-top: 20px;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: #fff; border: 1px dashed #c9dcf8; border-radius: 14px;
  padding: 16px 18px;
}
.res-note-ico {
  width: 34px; height: 34px; flex: none; border-radius: 10px;
  display: grid; place-items: center; font-size: 14px; font-weight: 750; color: #fff;
  background: linear-gradient(140deg, #2563eb, #60a5fa);
}
.res-note p { flex: 1; min-width: 240px; font-size: 13.4px; line-height: 1.8; color: var(--ink-2); }
.res-note p b { color: var(--blue-d); font-weight: 700; }
.res-note .btn { flex: none; }

/* 复制提示 */
.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translate(-50%, 14px);
  background: #0f2a5c; color: #fff; font-size: 13.5px; font-weight: 600;
  padding: 11px 18px; border-radius: 11px;
  box-shadow: 0 14px 34px rgba(15, 42, 92, .3);
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 99;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ------------------------------ 页脚 ------------------------------ */

.site-foot {
  margin-top: 84px;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 42px 0 26px;
}
.foot-in { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.foot-brand p { margin-top: 12px; font-size: 13px; color: var(--muted); max-width: 280px; line-height: 1.8; }
.foot-col h5 { font-size: 12.5px; color: var(--dim); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 12px; font-weight: 700; }
.foot-col a, .foot-col span { display: block; font-size: 13.2px; color: var(--ink-2); padding: 4px 0; }
.foot-col a:hover { color: var(--blue); }
.foot-bottom {
  margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line-2);
  display: flex; flex-wrap: wrap; gap: 10px 20px; justify-content: space-between;
  font-size: 12.2px; color: var(--dim);
}
.foot-bottom .mono { font-family: var(--mono); letter-spacing: .02em; }

/* ------------------------------ 产品详情页 ------------------------------ */

.p-hero {
  padding: 56px 0 60px;
  background:
    radial-gradient(760px 420px at 12% -20%, #dce9ff, transparent 62%),
    radial-gradient(620px 380px at 92% 0%, #e3f7ff, transparent 58%),
    linear-gradient(180deg, #f8fbff, var(--bg));
  border-bottom: 1px solid var(--line-2);
}
.crumb { display: flex; align-items: center; gap: 8px; font-size: 12.8px; color: var(--dim); margin-bottom: 26px; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--blue); }
.crumb span { color: #cbd5e1; }

.p-hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center; }
.p-hero h1 { font-size: clamp(30px, 4vw, 44px); letter-spacing: -.03em; }
.p-hero .lead { margin-top: 16px; font-size: 16px; color: var(--muted); line-height: 1.9; max-width: 520px; }
.p-meta { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.p-meta span {
  font-size: 12.5px; padding: 5px 11px; border-radius: 8px;
  background: #fff; border: 1px solid var(--line); color: #526480;
}
.p-hero .hero-cta { margin-top: 28px; }

.p-visual {
  border-radius: 16px; border: 1px solid #e4edfb; background: #fff;
  box-shadow: var(--shadow-l); overflow: hidden;
}
.pv-top { height: 40px; display: flex; align-items: center; gap: 7px; padding: 0 14px; border-bottom: 1px solid var(--line-2); background: #fbfdff; }
.pv-top i { width: 9px; height: 9px; border-radius: 50%; background: #dbe6f7; }
.pv-top i:first-child { background: #fda4a4; }
.pv-top i:nth-child(2) { background: #fcd9a3; }
.pv-top i:nth-child(3) { background: #a7e8bd; }
.pv-body { padding: 18px; display: grid; gap: 12px; }
.pv-row { display: flex; align-items: center; gap: 12px; }
.pv-bar { flex: 1; height: 8px; border-radius: 99px; background: #eef4ff; overflow: hidden; }
.pv-bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, #2563eb, #38bdf8); }
.pv-label { font-size: 11px; color: #7c8aa0; width: 54px; flex: none; }
.pv-card { border: 1px solid var(--line-2); border-radius: 10px; padding: 12px; background: #fafcff; }
.pv-card b { font-size: 11.5px; color: #33445f; }
.pv-card p { font-size: 10.5px; color: #93a3ba; margin-top: 4px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.fcard { background: #fff; border: 1px solid var(--line); border-radius: 15px; padding: 22px 20px; transition: transform .2s, box-shadow .2s; }
.fcard:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.fcard h4 { font-size: 15.5px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.fcard h4 b { width: 22px; height: 22px; border-radius: 7px; background: #eaf2ff; color: var(--blue); font-size: 11px; display: grid; place-items: center; }
.fcard p { font-size: 13.2px; color: var(--muted); line-height: 1.8; }

.faq { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: 13px;
  padding: 16px 20px; transition: border-color .2s, box-shadow .2s;
}
.faq details[open] { border-color: #cfe0fa; box-shadow: var(--shadow-s); }
.faq summary {
  cursor: pointer; font-weight: 650; color: var(--ink); font-size: 14.5px;
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-size: 18px; color: var(--blue); font-weight: 400; line-height: 1;
  transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin-top: 10px; font-size: 13.5px; color: var(--muted); line-height: 1.85; }

.cta-band {
  background: linear-gradient(135deg, #eff6ff, #f0fbff);
  border: 1px solid #dbe9fc;
  border-radius: 20px;
  padding: 34px 36px;
  display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center;
}
.cta-band h3 { font-size: 21px; }
.cta-band p { margin-top: 6px; font-size: 13.8px; color: var(--muted); }
.cta-band .btn { margin-left: auto; }

.more-products { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.mini-card {
  display: flex; align-items: center; gap: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px;
  transition: transform .18s, box-shadow .18s;
  color: var(--ink-2);
}
.mini-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-s); color: var(--ink-2); }
.mini-icon {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  display: grid; place-items: center; color: #fff; font-weight: 750; font-size: 15px;
  background: linear-gradient(140deg, var(--pc, #2563eb), var(--pc-2, #60a5fa));
}
.mini-card b { display: block; font-size: 14.5px; color: var(--ink); }
.mini-card small { font-size: 12px; color: var(--dim); }

/* ------------------------------ 动效 ------------------------------ */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.22, .61, .36, 1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ------------------------------ 响应式 ------------------------------ */

@media (max-width: 1024px) {
  .hero-in, .p-hero-in { grid-template-columns: 1fr; gap: 40px; }
  .hero-art { max-width: 560px; }
  .mock { transform: none; }
  .hero-art:hover .mock { transform: none; }
  .products, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); gap: 26px 0; }
  .flow-item:nth-child(3)::after { display: none; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .contact { grid-template-columns: 1fr; padding: 34px 28px; }
  .foot-in { grid-template-columns: 1fr 1fr; gap: 26px; }
}

@media (max-width: 760px) {
  body { font-size: 15px; }
  .section { padding: 62px 0; }
  .head-in { height: 62px; gap: 12px; }
  .nav {
    position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px;
    box-shadow: 0 18px 30px rgba(20, 48, 100, .08);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 12px; border-radius: 9px; }
  .burger { display: grid; margin-left: auto; }
  .head-tel { display: none; }
  .head-right .btn { height: 40px; padding: 0 13px; font-size: 13px; }
  .stats { grid-template-columns: 1fr 1fr; margin-top: -18px; }
  .stat { border-right: none; border-bottom: 1px solid var(--line-2); padding: 16px 18px; }
  .stat:nth-child(odd) { border-right: 1px solid var(--line-2); }
  .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }
  .products, .caps, .feature-grid, .more-products { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow-item::after { display: none; }
  .contact { padding: 26px 20px; border-radius: 18px; }
  .pcard.cta-card { flex-direction: column; align-items: flex-start; gap: 12px; padding: 22px 20px; }
  .pcard.cta-card .btn { align-self: flex-start; }
  .cta-band { padding: 24px 20px; }
  .cta-band .btn { margin-left: 0; width: 100%; }
  .foot-in { grid-template-columns: 1fr; }
  .res-note { flex-direction: column; align-items: flex-start; gap: 10px; }
  .res-note .btn { width: 100%; }
  .pc-desc { min-height: 0; }
  .mf-1, .mf-2 { display: none; }
  .hero { padding: 48px 0 62px; }
  .hero-sub { font-size: 15.5px; }
  .hero-note { gap: 6px 16px; font-size: 12.5px; }
  .about-card { padding: 20px; }
}