/* ==========================================================================
   远舟智能 · 技术驱动型谷歌SEO优化服务
   设计系统 / Design System
   ========================================================================== */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* 色板 */
  --ink:        #0A1526;
  --ink-2:      #16283F;
  --ink-3:      #2C4059;
  --muted:      #5E7391;
  --muted-2:    #8397B2;
  --line:       #E3EAF3;
  --line-2:     #EFF3F9;
  --bg:         #FFFFFF;
  --bg-soft:    #F5F8FD;
  --bg-soft-2:  #EDF3FC;

  --brand:      #1652E0;
  --brand-600:  #0F42BD;
  --brand-100:  #E4ECFE;
  --brand-50:   #F1F5FE;
  --cyan:       #00A6C4;
  --cyan-100:   #DEF6FB;
  --violet:     #5B4BE0;
  --green:      #0E9F6E;
  --green-100:  #DDF6EC;
  --amber:      #D98217;
  --amber-100:  #FDF1DE;
  --red:        #E02424;

  --grad-brand: linear-gradient(135deg, #1652E0 0%, #00A6C4 100%);
  --grad-soft:  linear-gradient(135deg, #F1F5FE 0%, #E7F7FB 100%);
  --grad-ink:   linear-gradient(160deg, #0A1526 0%, #16305A 55%, #0E4A6B 100%);

  /* 排版 */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
               Helvetica, Arial, sans-serif;
  --font-num:  "Inter", "SF Mono", "Roboto Mono", ui-monospace, Menlo, Consolas, monospace;

  /* 半径 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-xs: 0 1px 2px rgba(10, 21, 38, .05);
  --sh-sm: 0 2px 8px rgba(10, 21, 38, .06);
  --sh-md: 0 10px 30px -10px rgba(10, 21, 38, .14);
  --sh-lg: 0 24px 60px -18px rgba(10, 21, 38, .20);
  --sh-brand: 0 14px 34px -12px rgba(22, 82, 224, .45);

  --nav-h: 72px;
  --ease: cubic-bezier(.22, .68, .32, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-3);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { color: var(--ink); line-height: 1.25; font-weight: 700; letter-spacing: -.02em; }
::selection { background: var(--brand-100); color: var(--brand-600); }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. Layout ---------- */
.container { width: 100%; max-width: 1200px; margin: 0 auto; }
.container-narrow { max-width: 880px; }
.narrow-center { width: 100%; max-width: 880px; margin-left: auto; margin-right: auto; }
.section { padding: 50px 0; position: relative; }
.section-sm { padding: 72px 0; }
.section-soft { background: var(--bg-soft); }
.section-ink { background: var(--grad-ink); color: #C4D4E8; }
.section-ink h1, .section-ink h2, .section-ink h3, .section-ink h4 { color: #fff; }

.grid { display: grid; gap: 24px; }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.g-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.stack-sm > * + * { margin-top: 12px; }
.stack > * + * { margin-top: 20px; }
.center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ---------- 4. Typography ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--brand);
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  padding: 6px 14px; border-radius: var(--r-pill);
  margin-bottom: 20px;
}
.section-ink .eyebrow {
  color: #8FD8EE; background: rgba(143, 216, 238, .1); border-color: rgba(143, 216, 238, .22);
}
.h-xxl { font-size: clamp(38px, 5.4vw, 62px); letter-spacing: -.035em; line-height: 1.1; }
.h-xl  { font-size: clamp(30px, 3.6vw, 44px); letter-spacing: -.03em; }
.h-lg  { font-size: clamp(24px, 2.4vw, 32px); }
.h-md  { font-size: 20px; }
.lead { font-size: clamp(16px, 1.35vw, 19px); color: var(--muted); line-height: 1.75; }
.section-ink .lead { color: #A9C0DA; }
.small { font-size: 14px; }
.tiny { font-size: 12.5px; }
.mono-num { font-family: var(--font-num); font-variant-numeric: tabular-nums; }
.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.section-ink .gradient-text { background: linear-gradient(135deg, #6FA8FF 0%, #6FE3F5 100%);
  -webkit-background-clip: text; background-clip: text; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head .h-xl { margin-bottom: 18px; }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: var(--r-pill);
  font-size: 15px; font-weight: 600; letter-spacing: .01em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
              background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { background: var(--brand-600); transform: translateY(-2px); box-shadow: 0 18px 40px -12px rgba(22, 82, 224, .55); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--ink-2); border-color: var(--line); box-shadow: var(--sh-xs); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.28); }
.btn-light:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- 6. Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--line); box-shadow: 0 6px 24px -14px rgba(10,21,38,.18); }
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); gap: 24px; }

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px;
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.18; }
.brand-name { font-size: 16.5px; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
.brand-sub { font-size: 10.5px; letter-spacing: .16em; color: var(--muted-2); text-transform: uppercase; font-weight: 600; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative; padding: 9px 15px; border-radius: var(--r-pill);
  font-size: 15px; font-weight: 500; color: var(--ink-3);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--brand); background: var(--brand-50); }
.nav-links a.active { color: var(--brand); font-weight: 600; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 1px; transform: translateX(-50%);
  width: 16px; height: 2px; border-radius: 2px; background: var(--brand);
}
.nav-cta { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-phone { display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; font-weight: 600; color: var(--ink-2); }
.nav-phone svg { width: 15px; height: 15px; color: var(--brand); }

.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 11px;
  border: 1px solid var(--line); background: #fff;
  align-items: center; justify-content: center; flex-direction: column; gap: 4.5px;
}
.nav-toggle span { display: block; width: 17px; height: 2px; border-radius: 2px; background: var(--ink-2); transition: transform .25s var(--ease), opacity .2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 190;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 16px 24px 28px;
  box-shadow: var(--sh-lg);
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: opacity .26s var(--ease), transform .26s var(--ease);
  max-height: calc(100vh - var(--nav-h)); overflow-y: auto;
}
.mobile-menu.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-menu a {
  display: block; padding: 14px 4px; font-size: 16px; font-weight: 500;
  border-bottom: 1px solid var(--line-2); color: var(--ink-2);
}
.mobile-menu a.active { color: var(--brand); font-weight: 600; }
.mobile-menu .btn { width: 100%; margin-top: 20px; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative; padding: calc(var(--nav-h) + 78px) 0 96px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 82, 224, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 82, 224, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 65% at 50% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 65% at 50% 20%, #000 20%, transparent 78%);
}
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5;
}
.hero-glow.a { width: 560px; height: 560px; background: #C9DCFF; top: -200px; right: -120px; }
.hero-glow.b { width: 420px; height: 420px; background: #C9F1F8; top: 60px; left: -160px; opacity: .55; }

.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 62px; align-items: center; }
.hero-visual { position: relative; }
.hero h1 { margin-bottom: 24px; }
.hero .lead { max-width: 560px; margin-bottom: 34px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 12px 26px; margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line); }
.hero-meta-item { display: flex; align-items: center; gap: 9px; font-size: 14px; color: var(--muted); font-weight: 500; }
.hero-meta-item svg { width: 16px; height: 16px; color: var(--green); flex: none; }

/* 看板卡片 */
.dash {
  position: relative;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-xl); box-shadow: var(--sh-lg);
  padding: 24px 24px 20px; overflow: hidden;
}
.dash::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--grad-brand);
}
.dash-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.dash-title { font-size: 14.5px; font-weight: 700; color: var(--ink); }
.dash-sub { font-size: 12px; color: var(--muted-2); font-weight: 500; }
.dash-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 700; color: var(--green);
  background: var(--green-100); padding: 4px 10px; border-radius: var(--r-pill);
}
.dash-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.kpi { background: var(--bg-soft); border: 1px solid var(--line-2); border-radius: var(--r-md); padding: 11px 12px; }
.kpi-label { font-size: 11px; color: var(--muted-2); font-weight: 600; margin-bottom: 3px; letter-spacing: .02em; }
.kpi-val { font-family: var(--font-num); font-size: 19px; font-weight: 700; color: var(--ink); letter-spacing: -.02em; }
.dash-chart { margin: 0 -6px; }
.dash-legend { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; padding-top: 14px; border-top: 1px dashed var(--line); }
.dash-legend span { font-size: 11.5px; color: var(--muted-2); display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 3px; display: inline-block; }

.float-chip {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-md);
  padding: 10px 14px; display: flex; align-items: center; gap: 10px;
  animation: floaty 5.5s ease-in-out infinite;
}
.float-chip.c1 { left: 60px;top: 170px; animation-delay: .6s; }
.float-chip.c2 { right: -26px; bottom: 74px; animation-delay: 1.8s; }
.float-chip .fc-icon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; flex: none; }
.float-chip .fc-icon svg { width: 16px; height: 16px; }
.float-chip .fc-t { font-size: 13px; font-weight: 700; color: var(--ink); line-height: 1.25; }
.float-chip .fc-s { font-size: 11px; color: var(--muted-2); }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ---------- 8. 指标条 ---------- */
.stats-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.stats-band .grid { gap: 0; }
.stat-item { padding: 38px 26px; text-align: center; border-right: 1px solid var(--line-2); }
.stat-item:last-child { border-right: none; }
.stat-num { font-family: var(--font-num); font-size: clamp(30px, 3.4vw, 42px); font-weight: 800; letter-spacing: -.035em; color: var(--ink); line-height: 1; }
.stat-num .suffix { font-size: .58em; color: var(--brand); margin-left: 2px; }
.stat-label { font-size: 13.5px; color: var(--muted); margin-top: 10px; font-weight: 500; }

/* ---------- 9. Cards ---------- */
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 30px 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  position: relative; overflow: hidden; height: 100%;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.card-ico {
  width: 50px; height: 50px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 20px;
  background: var(--brand-50); color: var(--brand);
}
.card-ico svg { width: 24px; height: 24px; }
.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--muted); line-height: 1.72; }
.card-list { margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); }
.card-list li { position: relative; padding-left: 20px; font-size: 13.5px; color: var(--ink-3); margin-bottom: 8px; }
.card-list li:last-child { margin-bottom: 0; }
.card-list li::before {
  content: ""; position: absolute; left: 2px; top: 9px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--brand);
}
.card-num {
  position: absolute; right: 20px; top: 14px;
  font-family: var(--font-num); font-size: 40px; font-weight: 800;
  color: var(--bg-soft-2); letter-spacing: -.04em; pointer-events: none;
}
.card-tint .card-ico { background: var(--cyan-100); color: var(--cyan); }
.card-tint .card-list li::before { background: var(--cyan); }

.card-ink { background: var(--grad-ink); border-color: transparent; }
.card-ink h3 { color: #fff; }
.card-ink p { color: #A9C0DA; }
.card-ink .card-ico { background: rgba(255,255,255,.12); color: #7FE0F5; }
.card-ink .card-list { border-top-color: rgba(255,255,255,.14); }
.card-ink .card-list li { color: #C4D4E8; }
.card-ink .card-list li::before { background: #6FE3F5; }
.card-ink .card-num { color: rgba(255,255,255,.07); }

/* ---------- 10. 流程 ---------- */
.flow { position: relative; }
.flow-track {
  position: absolute; top: 27px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, var(--brand-100), var(--cyan-100));
  z-index: 0;
}
.flow-track::after {
  content: ""; position: absolute; inset: 0; border-radius: 2px;
  background: var(--grad-brand); transform-origin: left;
  transform: scaleX(var(--flow-progress, 0)); transition: transform 1.6s var(--ease);
}
.flow-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.flow-step { text-align: center; padding: 0 6px; }
.flow-dot {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 20px;
  background: #fff; border: 2px solid var(--brand-100);
  display: grid; place-items: center;
  font-family: var(--font-num); font-weight: 800; font-size: 17px; color: var(--brand);
  box-shadow: 0 0 0 8px #fff, var(--sh-sm);
  transition: transform .3s var(--ease), border-color .3s, background .3s, color .3s;
}
.flow-step:hover .flow-dot { transform: scale(1.08); border-color: var(--brand); background: var(--grad-brand); color: #fff; }
.flow-step h4 { font-size: 16.5px; margin-bottom: 8px; }
.flow-step p { font-size: 13.5px; color: var(--muted); line-height: 1.68; }

/* ---------- 11. 成果 / 条形图 ---------- */
.bars { display: grid; gap: 26px; }
.bar-row { }
.bar-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; gap: 12px; }
.bar-name { font-size: 15px; font-weight: 600; color: var(--ink); }
.bar-val { font-family: var(--font-num); font-size: 15px; font-weight: 700; color: var(--brand); }
.bar-track { position: relative; height: 10px; border-radius: var(--r-pill); background: var(--bg-soft-2); overflow: hidden; }
.bar-fill {
  position: absolute; inset: 0 auto 0 0; width: 0; border-radius: var(--r-pill);
  background: var(--grad-brand);
  transition: width 1.5s var(--ease);
}
.bar-fill.alt { background: linear-gradient(135deg, #5B4BE0 0%, #00A6C4 100%); }
.bar-note { font-size: 13px; color: var(--muted-2); margin-top: 8px; }

/* ---------- 12. 案例卡片 ---------- */
.case-card {
  border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff;
  overflow: hidden; display: flex; flex-direction: column; height: 100%;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.case-thumb { height: 152px; position: relative; overflow: hidden; }
.case-thumb .thumb-art { position: absolute; inset: 0; }
.case-thumb .tag {
  position: absolute; left: 16px; top: 16px; z-index: 2;
  font-size: 12px; font-weight: 700; padding: 5px 11px; border-radius: var(--r-pill);
  background: rgba(255,255,255,.92); color: var(--ink-2); backdrop-filter: blur(6px);
}
.case-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.case-body h3 { font-size: 17.5px; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--muted); line-height: 1.7; }
.case-kpis { display: flex; gap: 22px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line-2); }
.case-kpi .ck-v { font-family: var(--font-num); font-size: 21px; font-weight: 800; color: var(--brand); letter-spacing: -.03em; line-height: 1.1; }
.case-kpi .ck-l { font-size: 12px; color: var(--muted-2); margin-top: 3px; }

/* ---------- 13. 对比表 ---------- */
.cmp-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; }
table.cmp { width: 100%; border-collapse: collapse; min-width: 640px; }
table.cmp th, table.cmp td { padding: 17px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line-2); }
table.cmp thead th { background: var(--bg-soft); font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
table.cmp tbody tr:last-child td { border-bottom: none; }
table.cmp tbody tr:hover { background: var(--brand-50); }
table.cmp td:first-child { font-weight: 600; color: var(--ink); }
table.cmp .col-us { background: rgba(22, 82, 224, .035); color: var(--brand-600); font-weight: 600; }
table.cmp thead th.col-us { background: var(--brand-100); color: var(--brand-600); }
.tick { display: inline-flex; align-items: center; gap: 7px; }
.tick svg { width: 15px; height: 15px; flex: none; color: var(--green); }
.tick.no svg { color: var(--muted-2); }

/* ---------- 14. FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: flex-start; justify-content: space-between;
  gap: 22px; padding: 24px 4px; text-align: left;
  font-size: 16.5px; font-weight: 600; color: var(--ink); line-height: 1.55;
  transition: color .2s;
}
.faq-q:hover { color: var(--brand); }
.faq-icon {
  flex: none; width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--line); background: #fff;
  display: grid; place-items: center; margin-top: 1px;
  transition: transform .3s var(--ease), background .3s, border-color .3s;
}
.faq-icon svg { width: 14px; height: 14px; color: var(--muted); transition: color .3s; }
.faq-item.open .faq-icon { background: var(--brand); border-color: var(--brand); transform: rotate(180deg); }
.faq-item.open .faq-icon svg { color: #fff; }
.faq-a { overflow: hidden; max-height: 0; transition: max-height .38s var(--ease); }
.faq-a-inner { padding: 0 46px 26px 4px; font-size: 15px; color: var(--muted); line-height: 1.78; }
.faq-a-inner strong { color: var(--ink-2); font-weight: 600; }

/* ---------- 14b. 博客文章卡片 ---------- */
.post-card {
  display: flex; flex-direction: column; height: 100%;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 26px 24px 22px;
  position: relative; overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.post-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--grad-brand);
  transform: scaleX(0); transform-origin: left;
  transition: transform .38s var(--ease);
}
.post-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.post-card:hover::before { transform: scaleX(1); }

.post-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.post-date { font-size: 12.5px; color: var(--muted-2); letter-spacing: .01em; }
.post-tag {
    font-size: 12px;
    font-weight: 700;
    color: var(--brand);
    background: var(--brand-50);
    border: 1px solid var(--brand-100);
    padding: 4px 11px;
    border-radius: var(--r-pill);
    white-space: nowrap;
}
.post-card h3 {
  font-size: 16.5px; line-height: 1.52; letter-spacing: -.01em;
  margin-bottom: 10px; transition: color .25s var(--ease);
}
.post-card:hover h3 { color: var(--brand); }
.post-card p { font-size: 14px; color: var(--muted); line-height: 1.72; flex: 1; }
.post-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line-2);
  font-size: 13.5px; font-weight: 600; color: var(--brand);
}
.post-more svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.post-card:hover .post-more svg { transform: translateX(4px); }

/* ---------- 14.1 教程列表页：左文章列表 + 右侧栏 ---------- */
.tut-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px;
  gap: 44px; align-items: start;
}
.tut-side {
  position: sticky; top: calc(var(--nav-h) + 24px);
  display: grid; gap: 20px;
}

/* 文章列表 */
.art-list { display: grid; gap: 14px; }
.art-item {
  display: grid; grid-template-columns: minmax(0, 1fr) 34px;
  gap: 20px; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 24px 26px;
  position: relative; overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.art-item::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad-brand);
  transform: scaleY(0); transform-origin: top;
  transition: transform .38s var(--ease);
}
.art-item:hover { transform: translateY(-3px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.art-item:hover::before { transform: scaleY(1); }
.art-meta {margin-top: 10px; }
.art-item h3 { font-size: 17px; line-height: 1.5; margin-bottom: 8px; transition: color .25s var(--ease); }
.art-item:hover h3 { color: var(--brand); }
.art-item p { font-size: 14px; color: var(--muted); line-height: 1.72; }
.art-item:hover .art-arrow { background: var(--brand); border-color: var(--brand); color: #fff; transform: translateX(3px); }

/* 展开更多 */
.art-more {
  display: flex; align-items: center; justify-content: center; gap: 9px;
  width: 100%; margin-top: 14px; padding: 15px 22px;
  border: 1px dashed var(--line); border-radius: var(--r-lg);
  background: #fff; font-size: 14.5px; font-weight: 600; color: var(--ink-2);
  transition: border-color .25s var(--ease), color .25s var(--ease), background-color .25s var(--ease);
}
.art-more:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-50); }
.art-more svg { width: 16px; height: 16px; transition: transform .28s var(--ease); }
.art-more[aria-expanded="true"] svg { transform: rotate(180deg); }
.art-more.hide { display: none; }

/* 学习路径卡 */
.path-card {
  display: flex; flex-direction: column; height: 100%;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px 28px 26px; position: relative; overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.path-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--grad-brand);
  transform: scaleX(0); transform-origin: left;
  transition: transform .38s var(--ease);
}
.path-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.path-card:hover::before { transform: scaleX(1); }
.path-step {
  font-family: var(--font-num); font-size: 12px; font-weight: 700;
  letter-spacing: .12em; color: var(--brand);
}
.path-card h3 { font-size: 19px; margin: 12px 0 10px; transition: color .25s var(--ease); }
.path-card:hover h3 { color: var(--brand); }
.path-card p { font-size: 14px; color: var(--muted); line-height: 1.72; flex: 1; }
.path-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line-2);
  font-size: 13.5px; font-weight: 600; color: var(--brand);
}
.path-more svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.path-card:hover .path-more svg { transform: translateX(4px); }

/* 侧栏卡片 */
.side-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 24px 22px;
}
.side-h {
  display: flex; align-items: center; gap: 9px;
  font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 16px;
}
.side-h::before {
  content: ""; width: 3px; height: 15px; border-radius: 2px; background: var(--grad-brand);
}

/* 侧栏 · 分类 */
.side-cats { display: grid; gap: 5px; }
.side-cat {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; text-align: left; font-size: 14px; color: var(--ink-3);
  padding: 9px 12px; border-radius: var(--r-sm);
  scroll-margin-top: calc(var(--nav-h) + 20px);
  transition: background-color .22s var(--ease), color .22s var(--ease);
}
.side-cat em {
  font-style: normal; font-family: var(--font-num); font-size: 12.5px;
  color: var(--muted-2); background: var(--bg-soft);
  padding: 2px 9px; border-radius: var(--r-pill);
  transition: background-color .22s var(--ease), color .22s var(--ease);
}
.side-cat:hover { background: var(--brand-50); color: var(--brand); }
.side-cat.sel { background: var(--brand); color: #fff; font-weight: 600; }
.side-cat.sel em { background: rgba(255, 255, 255, .22); color: #fff; }

/* 侧栏 · 热门推荐 */
.side-rank { display: grid; gap: 14px; }
.side-rank li { position: relative; padding-left: 15px; }
.side-rank li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%;
  background: #C3D2E6; transition: background .22s var(--ease);
}
.side-rank li:hover::before { background: var(--brand); }
.side-rank a { display: block; font-size: 14px; color: var(--muted);line-height: 1.6; transition: color .22s var(--ease); }
.side-rank a:hover { color: var(--brand); }
.side-rank span { display: block; margin-top: 3px; font-size: 12.5px; font-weight: 400; color: var(--muted-2); }

/* 侧栏 · 转化卡 */
.side-cta {
  position: relative; overflow: hidden;
  background: var(--grad-ink); border-color: transparent; color: #C4D4E8;
}
.side-cta::before {
  content: ""; position: absolute; width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 166, 196, .42), transparent 68%);
  top: -110px; right: -80px;
}
.side-cta h3 { position: relative; font-size: 16.5px; color: #fff; margin-bottom: 10px; }
.side-cta p { position: relative; font-size: 13.5px; color: #A9C0DA; line-height: 1.72; margin-bottom: 18px; }
.side-cta .btn { position: relative; width: 100%; }

/* ---------- 15. CTA ---------- */
.cta-panel {
  position: relative; overflow: hidden;
  background: var(--grad-ink); border-radius: var(--r-xl);
  padding: 62px 56px; color: #C4D4E8;
}
.cta-panel::before {
  content: ""; position: absolute; width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,166,196,.42), transparent 68%);
  top: -180px; right: -120px;
}
.cta-panel::after {
  content: ""; position: absolute; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(22,82,224,.5), transparent 68%);
  bottom: -190px; left: -80px;
}
.cta-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.cta-panel h2 { margin-bottom: 16px; }
.cta-points { display: grid; gap: 11px; margin-top: 24px; }
.cta-points li { display: flex; align-items: center; gap: 10px; font-size: 14.5px; }
.cta-points svg { width: 16px; height: 16px; color: #6FE3F5; flex: none; }
.cta-side { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: var(--r-lg); padding: 26px; }
.cta-side .row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 14px; }
.cta-side .row:last-child { border-bottom: none; }
.cta-side .row b { color: #fff; font-family: var(--font-num); font-size: 17px; }

/* ---------- 16. 表单 ---------- */
.form-grid { display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--ink-2); }
.field label .req { color: var(--red); margin-left: 3px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 15px; border-radius: var(--r-md);
  border: 1px solid var(--line); background: #fff; font-size: 14.5px;
  transition: border-color .2s, box-shadow .2s; color: var(--ink-2);
}
.field textarea { resize: vertical; min-height: 116px; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(22,82,224,.1);
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip-opt {
  font-size: 13.5px; padding: 8px 15px; border-radius: var(--r-pill);
  border: 1px solid var(--line); background: #fff; color: var(--ink-3); cursor: pointer;
  transition: all .2s var(--ease); user-select: none;
}
.chip-opt:hover { border-color: var(--brand); color: var(--brand); }
.chip-opt.sel { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
.form-note { font-size: 12.5px; color: var(--muted-2); }
.form-success {
  display: none; align-items: flex-start; gap: 13px;
  background: var(--green-100); border: 1px solid #A8E4CB;
  border-radius: var(--r-md); padding: 18px 20px; color: #065F46; font-size: 14.5px;
}
.form-success.show { display: flex; }
.form-success svg { width: 20px; height: 20px; flex: none; margin-top: 2px; }
.form-success strong { display: block; margin-bottom: 3px; color: #065F46; }

/* ---------- 17. 分栏内容 ---------- */
.split { display: grid; grid-template-columns: repeat(2, 1fr); gap: 64px; align-items: center; }
/* 允许分栏子元素收缩到列宽以内，内部表格/看板自行横向滚动，避免撑破移动端布局 */
.split > * { min-width: 0; }
.split.reverse .split-media { order: -1; }
.check-list { display: grid; gap: 14px; margin-top: 26px; }
.check-list li { display: flex; gap: 13px; align-items: flex-start; font-size: 15px; color: var(--ink-3); }
.check-list .ci {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--brand-50); display: grid; place-items: center; margin-top: 2px;
}
.check-list .ci svg { width: 13px; height: 13px; color: var(--brand); }
.check-list b { color: var(--ink); font-weight: 600; }

.panel-visual {
  border-radius: var(--r-xl); border: 1px solid var(--line); background: #fff;
  box-shadow: var(--sh-md); padding: 28px; overflow: hidden; position: relative;
}
.panel-visual.soft { background: var(--grad-soft); border-color: #D9E6F8; }
.mini-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.mini-title { font-size: 14px; font-weight: 700; color: var(--ink); }
.pill-tag { font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: var(--r-pill); background: var(--brand-50); color: var(--brand); }

.kv-list { display: grid; gap: 2px; }
.kv-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line-2); font-size: 14px; }
.kv-row:last-child { border-bottom: none; }
.kv-row .k { color: var(--muted); }
.kv-row .v { font-family: var(--font-num); font-weight: 700; color: var(--ink); }
.kv-row .v.up { color: var(--green); }

/* 横排指标卡（团队能力构成 / 累计交付） */
.split.split-wide-right { grid-template-columns: .92fr 1.08fr; }
.kv-list.horiz { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.kv-list.horiz .kv-row {
  flex-direction: column; align-items: flex-start; justify-content: flex-start;
  gap: 9px; padding: 15px 11px 14px;
  background: #fff; border: 1px solid #DCE8F8; border-radius: 12px;
  box-shadow: 0 1px 2px rgba(10, 21, 38, .04);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.kv-list.horiz .kv-row:last-child { border-bottom: 1px solid #DCE8F8; }
.kv-list.horiz .kv-row:hover { transform: translateY(-2px); border-color: #BBD2F2; box-shadow: 0 10px 22px rgba(10, 21, 38, .08); }
.kv-list.horiz .kv-row .v { order: -1; font-size: 20px; line-height: 1; letter-spacing: -.02em; }
.kv-list.horiz .kv-row .k { font-size: 11px; line-height: 1.55; }
.kv-list.horiz.compact .kv-row .v { font-size: 16.5px; }

/* 并排键值卡（文本型：标签在上、值在下，多列平铺） */
.kv-list.cols { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.kv-list.cols .kv-row {
  flex-direction: column; align-items: flex-start; justify-content: flex-start;
  gap: 7px; padding: 15px 16px;
  background: #fff; border: 1px solid #DCE8F8; border-radius: 12px;
  box-shadow: 0 1px 2px rgba(10, 21, 38, .04);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.kv-list.cols .kv-row:last-child { border-bottom: 1px solid #DCE8F8; }
.kv-list.cols .kv-row:hover { transform: translateY(-2px); border-color: #BBD2F2; box-shadow: 0 10px 22px rgba(10, 21, 38, .08); }
.kv-list.cols .kv-row .k { font-size: 12.5px; line-height: 1.4; }
.kv-list.cols .kv-row .v { font-size: 14.5px; line-height: 1.5; }

/* ---------- 18. 服务矩阵表 ---------- */
.svc-item {
  display: grid; grid-template-columns: 210px 1fr; gap: 34px;
  padding: 34px 0; border-bottom: 1px solid var(--line); align-items: start;
}
.svc-item:first-child { border-top: 1px solid var(--line); }
.svc-name { display: flex; align-items: center; gap: 13px; }
.svc-name .card-ico { margin-bottom: 0; width: 42px; height: 42px; border-radius: 12px; }
.svc-name .card-ico svg { width: 20px; height: 20px; }
.svc-name h3 { font-size: 17px; line-height: 1.35; }
.svc-body p { font-size: 14.5px; color: var(--muted); line-height: 1.75; }
.svc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag-sm { font-size: 12.5px; padding: 5px 12px; border-radius: var(--r-pill); background: var(--bg-soft); color: var(--ink-3); border: 1px solid var(--line); font-weight: 500; }
/* 可作为锚文本使用的标签（语义内链） */
a.tag-sm { text-decoration: none; transition: border-color .22s var(--ease), color .22s var(--ease), background-color .22s var(--ease); }
a.tag-sm:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-50); }

/* ---------- 19. 筛选栏 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.filter-bar .chip-opt { padding: 9px 18px; font-size: 14px; }

/* ---------- 20. 定价 ---------- */
.price-card {
  border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff;
  padding: 32px 28px; display: flex; flex-direction: column; height: 100%;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.price-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.price-card.featured { border-color: var(--brand); box-shadow: var(--sh-brand); position: relative; }
.price-card.featured::before {
  content: "最受欢迎"; position: absolute; top: -13px; left: 28px;
  background: var(--grad-brand); color: #fff; font-size: 12px; font-weight: 700;
  padding: 5px 14px; border-radius: var(--r-pill); letter-spacing: .03em;
}
.price-tier { font-size: 14px; font-weight: 700; color: var(--brand); letter-spacing: .05em; text-transform: uppercase; margin-bottom: 12px; }
.price-val { font-family: var(--font-num); font-size: 34px; font-weight: 800; color: var(--ink); letter-spacing: -.035em; line-height: 1; }
.price-val small { font-size: 14px; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.price-desc { font-size: 14px; color: var(--muted); margin: 12px 0 22px; padding-bottom: 22px; border-bottom: 1px solid var(--line-2); }
.price-feats { display: grid; gap: 12px; flex: 1; }
.price-feats li { display: flex; gap: 11px; align-items: flex-start; font-size: 14px; color: var(--ink-3); }
.price-feats svg { width: 16px; height: 16px; flex: none; color: var(--brand); margin-top: 3px; }
.price-card .btn { margin-top: 26px; width: 100%; }

/* ---------- 20. 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--brand-100), var(--cyan-100)); border-radius: 2px; }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -34px; top: 6px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 2px solid var(--brand); box-shadow: 0 0 0 5px #fff;
}
.tl-year { font-family: var(--font-num); font-size: 13px; font-weight: 800; color: var(--brand); letter-spacing: .06em; margin-bottom: 5px; }
.tl-item h4 { font-size: 16.5px; margin-bottom: 6px; }
.tl-item p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 21. 团队 ---------- */
.person { text-align: center; }
.person-av {
  width: 84px; height: 84px; border-radius: 50%; margin: 0 auto 16px;
  display: grid; place-items: center; font-size: 26px; font-weight: 800; color: #fff;
  font-family: var(--font-num); letter-spacing: -.03em;
}
.person h4 { font-size: 16px; margin-bottom: 4px; }
.person .role { font-size: 13px; color: var(--brand); font-weight: 600; margin-bottom: 9px; }
.person p { font-size: 13px; color: var(--muted); line-height: 1.65; }

/* ---------- 22. 客户LOGO ---------- */
.logo-strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px 44px; }
.logo-item {
  font-size: 17px; font-weight: 800; color: var(--muted-2); letter-spacing: -.01em;
  opacity: .72; transition: opacity .25s, color .25s; white-space: nowrap;
}
.logo-item:hover { opacity: 1; color: var(--ink-3); }

/* ---------- 23. 页面头部 ---------- */
.page-hero {
  padding: calc(var(--nav-h) + 68px) 0 68px;
  background: var(--grad-soft); border-bottom: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 82, 224, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 82, 224, .05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 90% at 30% 0%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 30% 0%, #000 10%, transparent 75%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { margin-bottom: 18px; }
.page-hero .lead { max-width: 660px; }

/* 居中版页面头：面包屑 / 标签 / 标题 / 描述 整体水平居中 */
.page-hero.center { text-align: center; }
.page-hero.center .crumb { justify-content: center; }
.page-hero.center h1 { max-width: 920px; margin-left: auto; margin-right: auto; }
.page-hero.center .lead { max-width: 720px; margin-left: auto; margin-right: auto; }
.page-hero.center::before {
  mask-image: radial-gradient(ellipse 90% 95% at 50% 0%, #000 10%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 95% at 50% 0%, #000 10%, transparent 78%);
}

.crumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted-2); margin-bottom: 20px; }
.crumb a:hover { color: var(--brand); }
.crumb svg { width: 13px; height: 13px; }

/* ---------- 24. 页脚 ---------- */
.site-footer { background: #08111F; color: #8CA3BD; }
.site-footer h5 { color: #fff; font-size: 14px; font-weight: 700; letter-spacing: .04em; margin-bottom: 18px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 52px; }
.foot-brand .brand-name { color: #fff; }
.foot-brand .brand-sub { color: #5E7590; }
.foot-desc { font-size: 14px; line-height: 1.75; margin: 20px 0 22px; max-width: 330px; }
.foot-links { display: grid; gap: 11px; }
.foot-links a { font-size: 14px; transition: color .2s; }
.foot-links a:hover { color: #fff; }
.foot-contact { display: grid; gap: 15px; }
.foot-contact-item { display: flex; gap: 11px; align-items: flex-start; font-size: 14px; }
.foot-contact-item svg { width: 16px; height: 16px; color: var(--brand); flex: none; margin-top: 3px; }
.foot-contact-item b { color: #fff; font-weight: 600; display: block; font-size: 14.5px; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 13px; color: #64798F;
}
.foot-bottom .fb-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-bottom a:hover { color: #fff; }
.socials { display: flex; gap: 10px; }
.socials a {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  transition: background .2s, transform .2s;
}
.socials a:hover { background: var(--brand); transform: translateY(-2px); }
.socials svg { width: 16px; height: 16px; color: #fff; }

/* ---------- 24b. 页脚补充 / 跳转链接 ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 300;
  padding: 12px 22px; border-radius: 0 0 var(--r-md) 0;
  background: var(--brand); color: #fff; font-size: 14px; font-weight: 600;
}
.skip-link:focus { left: 0; }
.foot-grid > nav { min-width: 0; }
.foot-contact-bar {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  padding: 26px 0; border-top: 1px solid rgba(255,255,255,.08);
}
.foot-contact-bar .foot-contact-item { font-size: 13.5px; }

/* ---------- 27. 教程栏目 / 文章页 ---------- */
.article-meta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 10px 14px; margin-top: 24px; font-size: 13.5px; color: var(--muted-2);
}
.article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted-2); }

/* 学习路径卡片 */
.path-card {
  position: relative; display: flex; flex-direction: column;
  padding: 30px 28px; border-radius: var(--r-lg);
  background: var(--bg); border: 1px solid var(--line);
  box-shadow: var(--sh-xs); scroll-margin-top: calc(var(--nav-h) + 24px);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.path-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.path-verb {
  align-self: flex-start; margin-bottom: 26px;
  padding: 5px 13px; border-radius: var(--r-pill);
  background: var(--grad-brand); color: #fff;
  font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
}
.path-card h3 { font-size: 19px; margin-bottom: 12px; }
.path-card p { font-size: 14.5px; color: var(--muted); line-height: 1.78; }
.path-meta { margin-top: auto; padding-top: 20px; font-size: 13px; color: var(--muted-2); font-weight: 600; }

/* 文章双栏布局 */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 236px; gap: 50px; align-items: start; }
.article-body { grid-column: 1; grid-row: 1; }
/* 正文在左、目录栏在右。DOM 中 aside 仍在正文之前（移动端单列时目录位于正文上方，阅读顺序合理），此处只调整桌面端视觉顺序 */
.article-side { position: sticky; top: calc(var(--nav-h) + 24px); order: 2; grid-column: 2; grid-row: 1 / span 2; }
/* 相关文章落在正文列正下方，与目录/相关教程侧栏并排 */
.rel-block { grid-column: 1; grid-row: 2; order: 1; scroll-margin-top: calc(var(--nav-h) + 20px); }
.toc { border: 0; border-radius: 0; padding: 0; background: none; box-shadow: none; }
.toc-h {
  font-size: 12.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  color: var(--muted-2); margin-bottom: 14px;
}
.toc-h-2 { margin-top: 26px; }
.toc-list { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc-list li { counter-increment: toc; }
.toc-list a {
  display: block; padding: 6px 0 6px 12px; border-left: 2px solid var(--line-2);
  font-size: 13.5px; line-height: 1.55; color: var(--muted);
  transition: color .2s, border-color .2s;
}
.toc-list a:hover, .toc-list a.active { color: var(--brand); border-left-color: var(--brand); }
.toc-rels { display: grid; gap: 10px; }
.toc-rel {
  display: block; font-size: 13.5px; line-height: 1.5; color: var(--muted);
  transition: color .2s;
}
.toc-rel:hover { color: var(--brand); }
/* 目录/相关教程条目较多时，在卡片内部滚动，避免吸附状态下底部内容不可达 */
@media (min-width: 1081px) {
  .toc {
    max-height: calc(100vh - var(--nav-h) - 48px);
    overflow-y: auto; overscroll-behavior: contain;
    scrollbar-width: none; -ms-overflow-style: none;
  }
  .toc::-webkit-scrollbar { width: 0; height: 0; display: none; }
}

/* 正文列下方 · 相关文章（单列卡片式） */
.rel-head { margin-bottom: 22px; }
.rel-head h2 { font-size: 21px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); }
.rel-list { display: grid; gap: 18px; }
.rel-card {
  display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 24px 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.rel-card:hover { transform: translateY(-2px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.rel-card h3 { font-size: 16.5px; line-height: 1.55; color: var(--ink); transition: color .25s var(--ease); }
.rel-card:hover h3 { color: var(--brand); }
.rel-card .rel-date { font-size: 13px; color: var(--muted); margin: 9px 0 10px; }
.rel-card p { font-size: 14px; color: var(--muted); line-height: 1.72; }
.rel-more { justify-content: flex-start; margin-top: 32px; }
@media (max-width: 640px) {
  .rel-card { padding: 20px 18px; }
}

/* 文章正文 */
.article-body { max-width: 914px; font-size: 16px; line-height: 1.85; color: var(--ink-2); }
.article-body h2 {
  font-size: 23px; line-height: 1.4; letter-spacing: -.012em; color: var(--ink);
  margin: 46px 0 16px; scroll-margin-top: calc(var(--nav-h) + 20px);
}
.article-body > h2:first-of-type { margin-top: 0; }
.article-body h3 { font-size: 17.5px; margin: 28px 0 12px; color: var(--ink); }
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 22px; }
.article-body li { margin-bottom: 10px; }
.article-body li:last-child { margin-bottom: 0; }
.article-body strong { color: var(--ink); font-weight: 650; }

/* 要点卡片 */
.keypoints {
  background: var(--grad-soft); border: 1px solid #D6E4F8;
  border-radius: var(--r-lg); padding: 26px 28px; margin-bottom: 42px;
}
.kp-h {
  font-size: 14px !important; font-weight: 700 !important; color: var(--ink) !important;
  letter-spacing: .02em; margin-bottom: 14px !important;
}
.keypoints ul { margin: 0 !important; padding-left: 20px; }
.keypoints li { font-size: 15px; line-height: 1.75; }
.article-body .keypoints { max-width: 100%; }

/* 文章 CTA */
.article-cta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 26px; margin-top: 56px; padding: 34px 36px;
  border-radius: var(--r-xl); background: var(--grad-ink); color: #C6D6E8;
}
.ac-h { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; letter-spacing: -.01em; }
.ac-p { font-size: 14.5px; line-height: 1.78; max-width: 620px; }
.article-cta .btn { flex: none; }

/* 上/下一篇 */
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 44px; }
.post-nav a {
  display: flex; flex-direction: column; gap: 7px;
  padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--r-lg);
  font-size: 14.5px; font-weight: 600; color: var(--ink-2); line-height: 1.5;
  transition: transform .25s var(--ease), border-color .25s, box-shadow .25s;
}
.post-nav a:hover { transform: translateY(-3px); border-color: #CFDDF5; box-shadow: var(--sh-sm); color: var(--brand); }
.post-nav a span { font-size: 12.5px; font-weight: 600; color: var(--muted-2); }
.post-nav .pn-next { text-align: right; }
.article-body .post-nav a { color: var(--ink-2); }
.article-body .post-nav a:hover { color: var(--brand); }

/* ---------- 28. 咨询渠道卡 ---------- */
.channel {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 34px 28px 30px; height: 100%;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.channel:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.channel-ico {
  width: 56px; height: 56px; border-radius: 17px; display: grid; place-items: center;
  background: var(--brand-50); color: var(--brand); margin-bottom: 18px;
}
.channel-ico svg { width: 26px; height: 26px; }
.channel-ico.cyan { background: var(--cyan-100); color: var(--cyan); }
.channel-ico.violet { background: #EDEBFC; color: #5B4BE0; }
.channel h3 { font-size: 18px; margin-bottom: 9px; }
.channel > p { font-size: 14px; color: var(--muted); line-height: 1.72; margin-bottom: 24px; }
.channel-foot {
  width: 100%; margin-top: auto; padding-top: 20px;
  border-top: 1px dashed var(--line);
}
.channel-val {
  font-family: var(--font-num); font-size: 19px; font-weight: 800;
  color: var(--ink); letter-spacing: -.02em; line-height: 1.3;
  word-break: break-all;
}
.channel-note { font-size: 12.5px; color: var(--muted-2); margin-top: 7px; }

/* ---------- 29. 客户评价 ---------- */
.quote {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px 28px 26px; height: 100%; display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.quote:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: #CFDDF5; }
.quote-mark {
  font-family: var(--font-num); font-size: 44px; font-weight: 800;
  color: var(--brand-100); line-height: .8; margin-bottom: 14px;
}
.quote > p { font-size: 14.5px; color: var(--ink-3); line-height: 1.78; flex: 1; }
.quote-foot {
  display: flex; align-items: center; gap: 12px;
  margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line-2);
}
.quote-av {
  width: 42px; height: 42px; border-radius: 50%; flex: none;
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 15px;
}
.quote-who { font-size: 13.5px; font-weight: 600; color: var(--ink); line-height: 1.4; }
.quote-org { font-size: 12.5px; color: var(--muted-2); }

/* ---------- 30. 承诺清单（带否定标记） ---------- */
.pledge-list { display: grid; gap: 2px; }
.pledge {
  display: flex; align-items: flex-start; gap: 13px;
  padding: 15px 0; border-bottom: 1px solid var(--line-2);
}
.pledge:last-child { border-bottom: none; }
.pledge-ico {
  flex: none; width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center; margin-top: 1px;
  background: var(--green-100); color: #0E9F6E;
}
.pledge-ico svg { width: 14px; height: 14px; }
.pledge-ico.no { background: #FDECEC; color: #E02424; }
.pledge b { display: block; font-size: 14.5px; color: var(--ink); font-weight: 600; margin-bottom: 3px; }
.pledge span.tx { font-size: 13.5px; color: var(--muted); line-height: 1.65; }

/* ---------- 25. 动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.d5 { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* 返回顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 40%; z-index: 150;
  width: 46px; height: 46px; border-radius: 14px;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--sh-md);
  display: grid; place-items: center;
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), background .2s;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--brand); border-color: var(--brand); }
.to-top svg { width: 18px; height: 18px; color: var(--ink-2); }
.to-top:hover svg { color: #fff; }

/* ---------- 26. 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-links, .nav-phone { display: none; }
  .nav-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero .lead { max-width: 100%; }
  .float-chip.c1 { left: -10px; }
  .float-chip.c2 { right: -8px; }
  .cta-inner { grid-template-columns: 1fr; gap: 34px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split.split-wide-right { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: 0; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .flow-track { display: none; }
  /* 教程 / 文章页 */
  .article-layout { grid-template-columns: 1fr; gap: 34px; }
  .article-side { position: static; order: 0; grid-column: auto; grid-row: auto; }
  .article-body { grid-column: auto; grid-row: auto; }
  .rel-block { grid-column: auto; grid-row: auto; order: 0; margin-top: 0; }
  .toc-list { columns: 2; column-gap: 28px; }
  .toc-rels { display: flex; flex-wrap: wrap; gap: 10px 26px; }
  .article-body { max-width: 100%; }
  /* 教程列表页 */
  .tut-layout { grid-template-columns: 1fr; gap: 34px; }
  .tut-side { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .side-cta { grid-column: 1 / -1; }
  .foot-contact-bar { grid-template-columns: 1fr 1fr; gap: 16px 22px; }
}
@media (max-width: 860px) {
  :root { --nav-h: 64px; }
  .section { padding: 72px 0; }
  .section-sm { padding: 52px 0; }
  .g-3, .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-panel { padding: 44px 28px; border-radius: var(--r-lg); }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-bottom: 1px solid var(--line-2); }
  .stat-item:nth-child(2n) { border-right: none; }
  .form-grid { grid-template-columns: 1fr; }
  .svc-item { grid-template-columns: 1fr; gap: 16px; padding: 28px 0; }
  .article-cta { flex-direction: column; align-items: flex-start; padding: 28px 24px; }
  .article-cta .btn { width: 100%; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .pn-next { text-align: left; }
  .art-item { padding: 22px 20px; grid-template-columns: minmax(0, 1fr) 30px; gap: 16px; }
  .foot-contact-bar { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .container { padding: 0 18px; }
  .nav-cta > .btn { display: none; }
  .g-2, .g-3, .g-4, .g-auto { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--nav-h) + 48px); padding-bottom: 64px; }
  .hero-meta { gap: 10px 18px; }
  .dash { padding: 20px 18px 16px; }
  .dash-kpis { grid-template-columns: repeat(3, 1fr); gap: 7px; }
  .kpi { padding: 9px 8px; }
  .kpi-val { font-size: 16px; }
  .float-chip { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; }
  .btn { padding: 12px 22px; font-size: 14.5px; }
  .btn-row .btn { flex: 1 1 auto; }
  .cta-panel { padding: 36px 22px; }
  .panel-visual { padding: 20px; }
  .card { padding: 24px 22px; }
  .faq-a-inner { padding-right: 12px; }
  .art-item { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 20px 18px; }
  .art-arrow { display: none; }
  .art-item h3 { font-size: 16px; }
  .tut-side { grid-template-columns: 1fr; }
  .side-card { padding: 22px 20px; }
  .channel { padding: 28px 22px 26px; }
  .channel-val { font-size: 17px; }
  .kv-list.horiz { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .kv-list.horiz .kv-row { padding: 13px 12px; }
  .kv-list.horiz .kv-row .v { font-size: 18px; }
  .kv-list.cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .kv-list.cols .kv-row { padding: 13px 13px; }
  .quote { padding: 26px 22px 22px; }
  .to-top { right: 16px; bottom: 16px; }
}






.btn1 {
	margin-left: 20px;
}
.btn2 {
	width: 80px;
}
.qiehuan {
	margin: 20px;
	display: none;
}
.btn2.active{
	background-color: pink;
}
.qiehuan.show {
	display:block;
}
.qiehuan p a {
	margin-right:5px;
}
.cont9 {
    margin: 0 auto;
    max-width: 1200px;
    padding: 0px !important;
}
.tabqh {
    margin-top: 20px;
}

.pager {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 30px;      
}
.pager ul li {
	display: inline-block;
	border: 1px solid #ccc;
	padding: 4px 12px;
	margin: 0 1px;
	line-height: 24px;
	background: #fff;
	color: #999
}
.pager ul li:hover {
	background: #474747;
	color: #fff;
	border: 1px solid #474747
}
.pager ul li:hover a {
	color: #fff;
}
.pager ul li.thisclass {
	display: inline-block;
	border: 1px solid #474747;
	padding: 4px 12px;
	margin: 0 1px;
	background: #474747;
	color: #fff;
}
.pager ul li.thisclass a {
	color: #fff;
}
.pager ul li a {
	display: block;
	color: #999
}
.pager ul li a:hover {
	color: #fff;
}