/* ============================================================
   AI官网建设 · GEO168.CN — shared stylesheet
   ============================================================ */
:root {
  --bg: #fbfbfe;
  --tint-warm: #fff4ec;
  --tint-cool: #f2f6ff;
  --surface: #ffffff;
  --ink: #131c33;
  --muted: #5a6478;
  --dim: #97a0b5;
  --line: #e3e9f1;
  --line-2: #d3dceb;
  --brand: #f4442e;
  --brand-2: #ff8a00;
  --blue: #2e5bff;
  --deep: #0f1b3d;
  --deep-2: #0a1330;
  --pos: #12915c;
  --grad: linear-gradient(94deg, #f4442e 10%, #ff8a00 90%);
  --grad-soft: linear-gradient(94deg, rgba(244,68,46,.08), rgba(255,138,0,.08));
  --shadow-sm: 0 1px 2px rgba(19,28,51,.05), 0 8px 24px -18px rgba(19,28,51,.35);
  --shadow: 0 2px 4px rgba(19,28,51,.04), 0 18px 44px -26px rgba(19,28,51,.45);
  --shadow-lg: 0 30px 70px -40px rgba(19,28,51,.55);
  --radius: 18px;
  --radius-lg: 20px;
  --font: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font); background: var(--bg); color: var(--ink);
  font-size: 16px; line-height: 1.75; overflow-x: hidden;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }
::selection { background: rgba(244,68,46,.2); }

.shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.shell-narrow { width: min(880px, calc(100% - 48px)); margin: 0 auto; }

/* ---------- topbar (geogs style) ---------- */
.topbar { background: var(--deep-2); color: #a9bed6; font-size: 12.5px; letter-spacing: .02em; }
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  min-height: 38px; padding-top: 6px; padding-bottom: 6px;
}
.topbar-left { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.topbar strong { color: #fff; font-weight: 600; }
.topbar .dot { color: #4a6485; }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 14px; flex: none; }
.sitemap-link {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 11px 4px 9px; border-radius: 100px;
  border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.07);
  color: #d7e5f4; font-size: 12.5px; letter-spacing: .02em;
  transition: background .25s, border-color .25s, transform .25s;
}
.sitemap-link svg { width: 14px; height: 14px; flex: none; color: #ff8a00; }
.sitemap-link:hover {
  color: #fff; background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.32); transform: translateY(-1px);
}

/* ============================================================
/* ---------- background stage ---------- */
.bg-stage { position: fixed; inset: 0; z-index: -2; background: var(--bg); }
.bg-stage::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(19,28,51,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19,28,51,.035) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 90% 52% at 50% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(ellipse 90% 52% at 50% 0%, #000 0%, transparent 74%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(96px); }
.orb-a { width: 600px; height: 600px; top: -270px; left: -150px; background: radial-gradient(circle, rgba(255,138,0,.28), transparent 65%); animation: drift 18s ease-in-out infinite alternate; }
.orb-b { width: 500px; height: 500px; top: -190px; right: -170px; background: radial-gradient(circle, rgba(244,68,46,.22), transparent 65%); animation: drift 22s ease-in-out infinite alternate-reverse; }
.orb-c { width: 460px; height: 460px; top: 44%; left: 40%; background: radial-gradient(circle, rgba(46,91,255,.08), transparent 65%); }
@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to { transform: translate(56px, 36px) scale(1.07); }
}

/* ============================================================
   header
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(251,251,254,.85);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 26px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 33px; height: 33px; border-radius: 9px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-size: 11.5px; font-weight: 800;
  letter-spacing: .01em; box-shadow: 0 3px 10px rgba(244,68,46,.32);
}
.brand-txt { display: grid; line-height: 1.25; }
.brand-name { font-weight: 800; font-size: 17px; letter-spacing: -.01em; }
.brand-url { font-family: var(--mono); font-size: 10.5px; color: var(--dim); letter-spacing: .08em; }
.brand em { font-style: normal; }
.brand em b { color: var(--brand); }

.main-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.main-nav > a {
  font-size: 14.5px; color: var(--muted); padding: 5px 0; position: relative;
  white-space: nowrap; transition: color .2s;
}
.main-nav > a:hover { color: var(--ink); }
.main-nav > a.active { color: var(--ink); font-weight: 600; }
.main-nav > a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px;
  background: var(--grad); border-radius: 2px; transform: scaleX(0); transition: transform .25s;
}
.main-nav > a:hover::after, .main-nav > a.active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* ---------- mobile drawer (geogs style) ---------- */
body.drawer-open { overflow: hidden; }
.drawer-wrap { position: fixed; inset: 0; z-index: 190; overflow: hidden; pointer-events: none; }
.drawer-mask {
  position: absolute; inset: 0; background: rgba(15,27,61,.5);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .35s, visibility .35s;
}
.drawer-wrap.open .drawer-mask { opacity: 1; visibility: visible; pointer-events: auto; }
.mobile-drawer {
  position: absolute; top: 0; right: 0; width: min(84vw, 336px); height: 100%; height: 100dvh;
  background: #fff; pointer-events: auto; transform: translateX(103%);
  transition: transform .4s cubic-bezier(.22,.8,.36,1);
  display: flex; flex-direction: column;
  box-shadow: -24px 0 60px -34px rgba(15,27,61,.65);
}
.drawer-wrap.open .mobile-drawer { transform: none; }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 13px 16px 13px 20px; border-bottom: 1px solid var(--line);
}
.drawer-close {
  width: 40px; height: 40px; border-radius: 11px; flex: none;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  display: grid; place-items: center; transition: background .25s, color .25s, border-color .25s;
}
.drawer-close:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.drawer-close svg { width: 17px; height: 17px; }
.drawer-nav { padding: 8px 12px; overflow-y: auto; flex: 1 1 auto; -webkit-overflow-scrolling: touch; }
.drawer-nav a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 12px; border-radius: 10px; font-size: 15px; font-weight: 500;
  color: var(--ink); border-bottom: 1px solid var(--line);
  transition: background .2s, color .2s;
}
.drawer-nav li:last-child a { border-bottom: 0; }
.drawer-nav a:active, .drawer-nav a:hover { background: var(--tint-cool); }
.drawer-nav a.active { color: var(--brand); background: var(--grad-soft); font-weight: 700; }
.drawer-nav a svg { width: 15px; height: 15px; color: #b9c2d4; flex: none; }
.drawer-foot {
  padding: 16px 18px calc(18px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line); background: #fafbfd;
}
.drawer-foot .df-phone {
  display: flex; align-items: center; gap: 8px;
  font-size: 19px; font-weight: 800; color: var(--ink);
  font-variant-numeric: tabular-nums; letter-spacing: -.01em;
}
.drawer-foot .df-phone svg { width: 16px; height: 16px; color: var(--brand); }
.drawer-foot .df-meta { font-size: 12.5px; color: var(--muted); margin-top: 6px; line-height: 1.7; }
.drawer-foot .btn { width: 100%; margin-top: 14px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 11px; font-weight: 600; border: 1px solid transparent;
  transition: all .22s; white-space: nowrap; line-height: 1.4;
}
.btn-lg { padding: 13px 28px; font-size: 16px; border-radius: 13px; }
.btn-md { padding: 9px 20px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(180deg, #ff5c45 0%, #f4442e 100%);
  color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 5px 16px rgba(244,68,46,.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 9px 24px rgba(244,68,46,.4); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ---------- nav toggle ---------- */
.nav-toggle {
  display: none; width: 40px; height: 40px; border: 1px solid var(--line-2);
  border-radius: 10px; background: var(--surface); flex-direction: column;
  align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 17px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   hero (home)
   ============================================================ */
.hero { padding: 76px 0 84px; }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 52px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--grad-soft); border: 1px solid rgba(244,68,46,.16);
  color: var(--brand); border-radius: 999px; padding: 6px 15px;
  font-size: 13px; font-weight: 600;
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
h1 {
  font-size: clamp(32px, 4.4vw, 52px); line-height: 1.2; letter-spacing: -.025em;
  font-weight: 800; margin: 20px 0 16px;
}
.grad-txt {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero .sub { font-size: 17px; color: var(--muted); max-width: 540px; }
.hero .sub b { color: var(--ink); }
.promo-actions { display: flex; gap: 13px; margin: 28px 0 22px; flex-wrap: wrap; }
.promo-hero-tags { display: flex; flex-wrap: wrap; gap: 8px 9px; }
.promo-hero-tags span {
  font-size: 12.5px; color: var(--muted); background: rgba(255,255,255,.7);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
.hero-stats { display: flex; gap: 36px; margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--line); }
.hero-stats b { display: block; font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.hero-stats b i { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stats span { font-size: 12.5px; color: var(--dim); }

/* ---------- AI chat card ---------- */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .35s, box-shadow .35s, border-color .35s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #cfdcea; }
/* hero visual: AI 对话演示（对齐 geogs.cn 排版，配色沿用本站） */
.hero-visual { position: relative; }
.chat-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; box-shadow: var(--shadow-lg);
}
.chat-card::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(150deg, rgba(244,68,46,.38), transparent 42%, rgba(46,91,255,.26));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.chat-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 18px; border-bottom: 1px solid var(--line);
  background: #fbfcff; border-radius: 20px 20px 0 0;
}
.chat-bar i { width: 8px; height: 8px; border-radius: 50%; background: #e2e9f3; display: block; }
.chat-bar i:nth-child(1) { background: #f0c6cb; }
.chat-bar i:nth-child(2) { background: #f0ddb4; }
.chat-bar i:nth-child(3) { background: #bfe6d3; }
.chat-bar .t { margin-left: 6px; font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }
.chat-bar .live {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-size: 10.5px; font-weight: 700; letter-spacing: .12em; color: var(--brand);
}
.chat-bar .live::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--brand); box-shadow: 0 0 0 3px rgba(244,68,46,.16);
}
.chat-body { display: flex; flex-direction: column; gap: 15px; padding: 22px 20px 24px; min-height: 380px; }

.msg { display: flex; gap: 10px; opacity: 0; transform: translateY(10px); animation: msgIn .5s ease forwards; }
@keyframes msgIn { to { opacity: 1; transform: none; } }
.msg:nth-child(1) { animation-delay: .1s; }
.msg:nth-child(2) { animation-delay: .6s; }
.msg:nth-child(3) { animation-delay: 1.3s; }
.msg:nth-child(4) { animation-delay: 1.8s; }
.msg .av {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  display: grid; place-items: center;
  font-size: 10.5px; font-weight: 700; letter-spacing: .02em;
}
.msg.user .av { background: #eff3fc; color: #4a5878; border: 1px solid var(--line); }
.msg.ai .av { background: var(--grad); color: #fff; }
.msg .bub {
  max-width: calc(100% - 42px); padding: 11px 14px;
  border-radius: 14px; font-size: 13.5px; line-height: 1.75;
  border: 1px solid var(--line); background: #f8fafd; color: #4a5878;
}
.msg.user .bub { background: #eef3fe; border-color: #dde5fb; color: var(--ink); }
.msg.ai .bub b { color: var(--ink); font-weight: 600; }
.msg.ai .bub .hl {
  display: inline-block; color: #fff; background: var(--grad);
  padding: 0 6px; border-radius: 5px; font-weight: 700; white-space: nowrap;
}
.msg .src {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line);
}
.msg .src span {
  font-size: 11px; color: var(--muted); padding: 2px 9px;
  border: 1px solid var(--line); border-radius: 100px; background: #fff;
}
.caret {
  display: inline-block; width: 2px; height: 14px; vertical-align: -2px;
  background: var(--brand); margin-left: 2px; animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.chat-foot {
  display: flex; align-items: center; gap: 9px;
  padding: 12px 18px; border-top: 1px solid var(--line);
  background: #fbfcff; border-radius: 0 0 20px 20px;
  font-size: 12px; color: var(--muted); line-height: 1.6;
}
.chat-foot .dot {
  width: 5px; height: 5px; border-radius: 50%; flex: none;
  background: var(--brand); box-shadow: 0 0 0 3px rgba(244,68,46,.14);
}
.float-badge {
  position: absolute; padding: 11px 15px; border-radius: 14px;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow);
  font-size: 11.5px; color: var(--muted); line-height: 1.5; z-index: 3;
}
.float-badge b {
  display: block; font-size: 18px; font-weight: 800;
  color: var(--ink); letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.float-badge b small { font-size: 11.5px; font-weight: 700; color: var(--brand); margin-left: 1px; }
.float-badge.f1 { left: -28px; bottom: 76px; animation: floaty 6.5s ease-in-out infinite; }
.float-badge.f2 { right: -22px; top: 74px; animation: floaty 7.6s ease-in-out infinite reverse; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
html.no-anim .msg { opacity: 1; transform: none; animation: none; }
html.no-anim .float-badge { animation: none; }

.callout {
  font-style: normal; font-size: 11.5px; padding: 2px 9px; border-radius: 999px;
  border: 1px dashed var(--line-2); color: var(--dim); line-height: 1.7;
}
.callout-win { border-color: rgba(244,68,46,.45); color: var(--brand); background: rgba(244,68,46,.05); }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chips span {
  font-size: 12px; border: 1px solid var(--line-2); color: var(--muted);
  border-radius: 999px; padding: 3px 11px; background: var(--bg);
}
.chips .hot { border-color: rgba(244,68,46,.4); color: var(--brand); background: var(--tint-warm); font-weight: 600; }

/* ============================================================
   page hero (subpages)
   ============================================================ */
.page-hero { padding: 64px 0 56px; position: relative; }
.crumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--dim); margin-bottom: 18px; }
.crumb a:hover { color: var(--brand); }
.crumb .sep { color: var(--line-2); }
.crumb .cur { color: var(--muted); }
.page-hero h1 { font-size: clamp(30px, 3.8vw, 44px); margin: 0 0 14px; }
.page-hero .lede { font-size: 16.5px; color: var(--muted); max-width: 680px; }
.page-hero .lede b { color: var(--ink); }
.page-hero-actions { display: flex; gap: 13px; margin-top: 26px; flex-wrap: wrap; }

/* ============================================================
   sections
   ============================================================ */
.section { padding: 84px 0; }
.section-head { text-align: center; max-width: 740px; margin: 0 auto 50px; }
.kicker {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 12px; letter-spacing: .26em;
  color: var(--brand); text-transform: uppercase; font-weight: 700;
}
.kicker::before, .kicker::after {
  content: ""; width: 26px; height: 1px; background: linear-gradient(90deg, transparent, rgba(244,68,46,.5));
}
.kicker::after { background: linear-gradient(90deg, rgba(244,68,46,.5), transparent); }
.section-head .title { font-size: clamp(25px, 3.2vw, 36px); font-weight: 800; letter-spacing: -.02em; margin: 12px 0 10px; line-height: 1.32; }
.section-head p { color: var(--muted); font-size: 15px; }
.section-cool { background: linear-gradient(180deg, #eff5ff 0%, #fcfdff 100%); border-top: 1px solid #e4ecf9; border-bottom: 1px solid #e4ecf9; }
.section-tint { background: linear-gradient(180deg, var(--tint-cool) 0%, #fcfdff 100%); }
.section-warm { background: linear-gradient(180deg, #fff7f0 0%, #fffdfb 100%); }

/* dark section */
.section-dark {
  background: linear-gradient(165deg, #17264d, #0a1330); color: #e8eef8;
  position: relative; overflow: hidden;
}
.section-dark::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000, transparent 80%);
}
.section-dark .section-head .title { color: #fff; }
.section-dark .section-head p { color: #8fa3c4; }
.section-dark .kicker { color: #ff8a00; }
.section-dark .kicker::before { background: linear-gradient(90deg, transparent, rgba(255,138,0,.55)); }
.section-dark .kicker::after { background: linear-gradient(90deg, rgba(255,138,0,.55), transparent); }
.section-dark .shell { position: relative; }

/* ---------- generic grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

/* ---------- why cards ---------- */
.promo-why { padding: 28px 26px; transition: all .25s; position: relative; overflow: hidden; }
.promo-why::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2.5px;
  background: var(--grad); opacity: 0; transition: opacity .25s;
}
.promo-why:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.promo-why:hover::after { opacity: 1; }
.promo-why .ico {
  width: 48px; height: 48px; border-radius: 13px; background: var(--grad-soft);
  border: 1px solid rgba(244,68,46,.14); color: var(--brand);
  display: grid; place-items: center; margin-bottom: 16px;
}
.promo-why .ico svg { width: 24px; height: 24px; }
.promo-why h3 { font-size: 17.5px; margin-bottom: 8px; letter-spacing: -.01em; }
.promo-why p { color: var(--muted); font-size: 14px; }
/* 图标与标题同行（电脑端 + 手机端通用） */
.promo-why:has(.ico) {
  display: grid; grid-template-columns: auto 1fr; column-gap: 13px; align-items: center;
}
.promo-why:has(.ico) .ico { grid-row: 1; grid-column: 1; margin: 0; }
.promo-why:has(.ico) h3 { grid-row: 1; grid-column: 2; margin: 0; }
.promo-why:has(.ico) p { grid-column: 1 / -1; margin-top: 10px; }
.promo-why:has(.ico) .promo-list,
.promo-why:has(.ico) .promo-actions { grid-column: 1 / -1; }

/* ---------- deliverables (dark) ---------- */
.act {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius); padding: 28px 26px; transition: all .25s;
}
.act:hover { border-color: rgba(255,138,0,.42); background: rgba(255,255,255,.06); transform: translateY(-4px); }
.act .idx {
  width: 36px; height: 36px; border-radius: 11px; background: var(--grad);
  color: #fff; display: grid; place-items: center;
  font-family: var(--mono); font-size: 15px; font-weight: 700; letter-spacing: 0;
  margin-bottom: 14px; box-shadow: 0 4px 12px rgba(244,68,46,.28);
}
.act h3 { color: #fff; font-size: 18.5px; margin-bottom: 14px; }
.promo-list { display: grid; gap: 10px; }
.promo-list li { position: relative; padding-left: 23px; color: #b9c6de; font-size: 14px; line-height: 1.6; }
.promo-list li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 13px; height: 13px;
  border-radius: 50%; background: rgba(255,138,0,.13); border: 1px solid rgba(255,138,0,.5);
}
.promo-list li::after {
  content: ""; position: absolute; left: 3.5px; top: 10.5px; width: 5.5px; height: 3px;
  border-left: 1.5px solid #ff8a00; border-bottom: 1.5px solid #ff8a00; transform: rotate(-45deg);
}

/* ---------- plans ---------- */
.promo-plans { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.promo-plan { padding: 30px 28px; display: flex; flex-direction: column; position: relative; transition: all .25s; }
.promo-plan:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.promo-plan.is-hot { border: 1.5px solid rgba(244,68,46,.45); box-shadow: 0 4px 10px rgba(244,68,46,.07), 0 22px 55px rgba(244,68,46,.13); }
.pp-badge {
  position: absolute; top: -13px; left: 28px; background: var(--grad); color: #fff;
  font-size: 12px; font-weight: 700; padding: 4px 13px; border-radius: 999px;
  box-shadow: 0 4px 12px rgba(244,68,46,.32); letter-spacing: .02em;
}
.pp-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 5px 11px; margin-bottom: 6px; }
.pp-tier { font-size: 21px; font-weight: 800; letter-spacing: -.01em; }
.pp-for { font-size: 12px; color: var(--brand); background: var(--grad-soft); border-radius: 999px; padding: 2px 11px; font-weight: 600; }
.pp-price { width: 100%; font-size: 15px; font-weight: 700; }
.pp-sub { width: 100%; color: var(--muted); font-size: 13px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.pp-list { display: grid; gap: 10px; margin: 18px 0 24px; flex: 1; }
.pp-list li { position: relative; padding-left: 23px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.pp-list li b { color: var(--ink); }
.pp-list li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: rgba(18,145,92,.09); border: 1px solid rgba(18,145,92,.4);
}
.pp-list li::after {
  content: ""; position: absolute; left: 3.5px; top: 10px; width: 5.5px; height: 3px;
  border-left: 1.5px solid var(--pos); border-bottom: 1.5px solid var(--pos); transform: rotate(-45deg);
}
.promo-plans-note { text-align: center; color: var(--dim); font-size: 12px; margin-top: 24px; }

/* ---------- flow ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.flow-step { padding: 24px 22px; position: relative; transition: all .25s; }
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.fs-ico { display: flex; align-items: center; gap: 11px; margin-bottom: 14px; }
.fs-step-no {
  width: 32px; height: 32px; border-radius: 10px; background: var(--grad);
  color: #fff; font-weight: 800; font-size: 14px; display: grid; place-items: center;
  box-shadow: 0 3px 9px rgba(244,68,46,.3);
}
.fs-ico svg { width: 22px; height: 22px; color: var(--dim); margin-left: auto; }
.flow-step h4 { font-size: 16px; margin-bottom: 6px; }
.flow-step p { color: var(--muted); font-size: 13.5px; }

/* ---------- faq ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 13px; overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.faq-item[open] { border-color: rgba(244,68,46,.3); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 17px 22px; font-weight: 700;
  font-size: 15px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 20px; color: var(--brand); font-weight: 400; transition: transform .25s; flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 18px; color: var(--muted); font-size: 14px; }

/* ---------- cta band ---------- */
.cta-band {
  position: relative; overflow: hidden; text-align: center;
  background: linear-gradient(165deg, #17264d, #0a1330); color: #fff;
  border-radius: var(--radius-lg); padding: 60px 32px; box-shadow: var(--shadow-lg);
}
.cta-band .scan-line {
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand), var(--brand-2), transparent);
  animation: scan 4.5s linear infinite;
}
@keyframes scan { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
.blob { position: absolute; border-radius: 50%; filter: blur(72px); pointer-events: none; }
.blob-1 { width: 290px; height: 290px; background: rgba(244,68,46,.26); top: -120px; left: -60px; }
.blob-2 { width: 310px; height: 310px; background: rgba(255,138,0,.2); bottom: -140px; right: -80px; }
.cta-band h2 { font-size: clamp(23px, 3vw, 32px); font-weight: 800; letter-spacing: -.02em; position: relative; }
.cta-band p { color: #9aa6c4; margin: 12px auto 26px; max-width: 600px; position: relative; font-size: 15px; }
.cta-actions { display: flex; gap: 13px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-band .btn-ghost { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.22); color: #fff; }
.cta-band .btn-ghost:hover { border-color: #fff; color: #fff; }
.cta-meta {
  display: flex; justify-content: center; gap: 10px 26px; flex-wrap: wrap;
  margin-top: 26px; position: relative; font-size: 14px; color: #7f8bab;
}
.cta-meta b { color: #c5cdd8; font-weight: 600; }

/* ============================================================
   footer — light (geogs style)
   ============================================================ */
.site-footer {
  background: #f5f8fc; color: #5a6478; margin-top: 84px;
  border-top: 1px solid #e3e9f1; font-size: 14px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px;
  padding: clamp(44px, 5vw, 64px) 0 40px;
}
.site-footer h4 { color: var(--ink); font-size: 13.5px; margin-bottom: 16px; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; }
.footer-brand .brand { display: flex; color: var(--ink); }
.footer-brand .brand-url { color: #97a0b5; }
.footer-brand > p { margin: 18px 0 0; font-size: 13.5px; line-height: 1.85; color: #6b7c93; max-width: 320px; }
.footer-grid a { display: block; font-size: 13.8px; padding: 4.5px 0; color: #5a6478; transition: color .2s, padding-left .2s; }
.footer-grid a:hover { color: var(--brand); padding-left: 3px; }
.footer-contact-list { display: grid; gap: 0; }
.footer-contact-list li { display: flex; gap: 10px; padding: 4.5px 0; font-size: 13.8px; line-height: 1.7; color: #5a6478; }
.footer-contact-list svg { width: 15px; height: 15px; flex: none; margin-top: 5px; color: var(--brand); }
.footer-contact-list strong { color: var(--ink); font-weight: 600; font-size: 13.8px; font-variant-numeric: tabular-nums; }
.footer-contact-list a:hover { color: var(--brand); }
.friend-links {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px;
  padding: 18px 0; border-top: 1px solid #e3e9f1; border-bottom: 1px solid #e3e9f1;
  font-size: 12.5px; color: #97a0b5;
}
.friend-links b { font-weight: 600; color: var(--ink); letter-spacing: .04em; }
.friend-links a { color: #97a0b5; transition: color .2s; display: inline; padding: 0; font-size: 12.5px; }
.friend-links a:hover { color: var(--brand); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 10px 22px; flex-wrap: wrap;
  padding: 22px 0 clamp(26px, 4vw, 36px); font-size: 12.5px; color: #97a0b5;
}
.footer-bottom a:hover { color: #5a6478; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; }
.footer-links a { color: #97a0b5; transition: color .2s; }
.footer-links a:hover { color: var(--brand); }

/* ---------- plans (geogs style, 三档) ---------- */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 26px 26px;
}
.plan.featured { border-color: rgba(244,68,46,.55); box-shadow: 0 26px 64px -40px rgba(244,68,46,.8); }
.plan-flag {
  position: absolute; top: -13px; left: 26px;
  background: var(--grad); color: #fff; font-size: 11.5px; font-weight: 600;
  padding: 4px 12px; border-radius: 999px; letter-spacing: .03em;
}
.plan h3 { font-size: 21px; color: var(--deep); letter-spacing: -.01em; }
.plan.featured h3 { color: var(--brand); }
.plan-sub { font-size: 13px; color: var(--muted); margin: 8px 0 18px; line-height: 1.6; min-height: 40px; }
.plan-price { font-size: 31px; font-weight: 800; color: var(--brand); letter-spacing: -.035em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.plan-price small { font-size: 12.5px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.plan-list { display: grid; gap: 9px; margin: 20px 0 24px; }
.plan-list li { display: flex; gap: 8px; font-size: 13.5px; color: #4a5878; line-height: 1.6; }
.plan-list li svg { width: 15px; height: 15px; flex: none; margin-top: 4px; color: var(--brand); }
.plan .btn { margin-top: auto; width: 100%; justify-content: center; }
.plan-note { margin-top: 24px; font-size: 12.5px; color: var(--muted); max-width: 860px; line-height: 1.8; }

/* ---------- floating contact (geogs style) ---------- */
.float-contact {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
}
.fc-wechat { position: relative; }
.fc-btn {
  width: 50px; height: 50px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); display: grid; place-items: center;
  box-shadow: var(--shadow); cursor: pointer; transition: all .25s; text-align: center;
}
.fc-btn svg { width: 22px; height: 22px; }
.fc-btn:hover { background: var(--deep); color: #fff; border-color: var(--deep); transform: translateY(-3px); }
.fc-btn.accent { background: var(--brand); border-color: var(--brand); color: #fff; box-shadow: 0 6px 16px rgba(244,68,46,.35); }
.fc-btn.accent:hover { background: #d23520; border-color: #d23520; color: #fff; }
.fc-qr {
  position: absolute; right: 62px; bottom: 0; width: 192px; padding: 13px 13px 11px;
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow-lg); text-align: center;
  opacity: 0; visibility: hidden; transform: translateX(8px) scale(.97);
  transition: opacity .28s, transform .28s, visibility .28s;
}
.fc-qr::after {
  content: ""; position: absolute; right: -6px; bottom: 20px;
  width: 11px; height: 11px; background: #fff;
  border-right: 1px solid var(--line); border-top: 1px solid var(--line);
  transform: rotate(45deg);
}
.fc-qr img { width: 100%; height: auto; border-radius: 8px; }
.fc-qr b { display: block; margin-top: 9px; font-size: 13px; color: var(--ink); }
.fc-qr span { display: block; font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.fc-wechat:hover .fc-qr, .fc-wechat:focus-within .fc-qr, .fc-wechat.show .fc-qr {
  opacity: 1; visibility: visible; transform: none;
}
.fc-top { opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s; }
.fc-top.show { opacity: 1; pointer-events: auto; }

/* ---------- ask modal ---------- */
.ask-modal { position: fixed; inset: 0; z-index: 300; display: none; }
.ask-modal:target { display: block; }
.ask-mask { position: absolute; inset: 0; background: rgba(10,19,48,.55); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.ask-box {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(400px, calc(100% - 40px)); background: var(--surface);
  border-radius: 18px; padding: 32px 30px; text-align: center; box-shadow: var(--shadow-lg);
}
.ask-x { position: absolute; top: 12px; right: 16px; font-size: 24px; color: var(--dim); line-height: 1; padding: 4px; }
.ask-box h3 { font-size: 19px; margin-bottom: 8px; }
.ask-box > p { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }
.ask-box form { display: flex; gap: 9px; }
.ask-box input[type="tel"] {
  flex: 1; min-width: 0; border: 1px solid var(--line-2); border-radius: 11px;
  padding: 11px 14px; font-size: 15px; font-family: inherit; outline: none; transition: border-color .2s, box-shadow .2s;
}
.ask-box input[type="tel"]:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(244,68,46,.12); }
.ask-box form button {
  border: none; border-radius: 11px; background: var(--grad); color: #fff;
  font-weight: 700; font-size: 14.5px; padding: 0 21px; box-shadow: 0 4px 13px rgba(244,68,46,.3);
}
.ask-hp { position: absolute; left: -9999px; }
.ask-qr-ph {
  width: 124px; height: 124px; margin: 20px auto 8px; border-radius: 12px;
  background:
    repeating-linear-gradient(0deg, #e6ebf7 0 5px, transparent 5px 10px),
    repeating-linear-gradient(90deg, #e6ebf7 0 5px, transparent 5px 10px);
  border: 8px solid #fff; box-shadow: 0 0 0 1px var(--line);
}
.ask-tip { display: block; color: var(--dim); font-size: 12.5px; }
.ask-tip b { color: var(--ink); font-weight: 700; }
.ask-tel { display: inline-block; margin-top: 9px; color: var(--brand); font-weight: 700; font-size: 14.5px; }

/* ---------- contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 24px; align-items: start; }
.contact-card { padding: 30px 28px; }
.contact-item { display: flex; gap: 15px; padding: 15px 0; border-bottom: 1px dashed var(--line); align-items: flex-start; }
.contact-item:last-child { border-bottom: none; }
.contact-item .ci-ico {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  background: var(--grad-soft); border: 1px solid rgba(244,68,46,.14);
  color: var(--brand); display: grid; place-items: center;
}
.contact-item .ci-ico svg { width: 20px; height: 20px; }
.contact-item b { display: block; font-size: 14.5px; }
.contact-item span { color: var(--muted); font-size: 13.5px; }
.contact-item a:hover { color: var(--brand); }
.form-card { padding: 30px 28px; }
.form-card h3 { font-size: 18px; margin-bottom: 4px; }
.form-card > p { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }
.form-card label { font-size: 12.5px; color: var(--muted); display: block; margin-bottom: 5px; font-weight: 600; }
.form-card input, .form-card textarea {
  width: 100%; border: 1px solid var(--line-2); border-radius: 10px;
  padding: 11px 13px; font-size: 14px; font-family: inherit; outline: none;
  transition: border-color .2s, box-shadow .2s; background: #fff; resize: vertical;
}
.form-card input:focus, .form-card textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(244,68,46,.1); }
.form-card .btn { width: 100%; margin-top: 16px; }
.form-note { font-size: 12px; color: var(--dim); margin-top: 12px; text-align: center; }

/* ---------- tables (price page) ---------- */
.cmp-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); font-size: 14px; }
.cmp-table th, .cmp-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.cmp-table th { background: var(--deep); color: #fff; font-size: 13.5px; font-weight: 600; }
.cmp-table tr:last-child td { border-bottom: none; }
.cmp-table tr:nth-child(even) td { background: #fafbfe; }
.cmp-table td:first-child { color: var(--muted); width: 32%; }
.cmp-table .yes { color: var(--pos); font-weight: 700; }
.cmp-table .no { color: var(--dim); }

/* ---------- sitemap page ---------- */
.geo-pj { margin-top: 26px; }
.geo-pj-label {
  display: block; font-size: 12.5px; color: var(--dim); margin-bottom: 10px;
  letter-spacing: .06em;
}
.geo-pj-list { display: flex; flex-wrap: wrap; gap: 8px; }
.geo-pj-list a {
  font-size: 12.5px; color: var(--muted); background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px;
  transition: all .2s;
}
.geo-pj-list a:hover { color: var(--brand); border-color: rgba(244,68,46,.4); background: var(--tint-warm); }
.geo-pj-list a.is-hq {
  color: var(--brand); border-color: rgba(244,68,46,.4);
  background: var(--grad-soft); font-weight: 700;
}
.sm-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.sm-item {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; transition: all .22s; display: block;
}
.sm-item:hover { border-color: rgba(244,68,46,.35); transform: translateY(-3px); box-shadow: var(--shadow); }
.sm-item b { display: block; font-size: 15px; margin-bottom: 4px; }
.sm-item span { font-size: 12.5px; color: var(--muted); line-height: 1.65; display: block; }
/* 省市卡片：横向单行展开（geogs 式） */
.geo-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.gd-prov {
  display: grid; grid-template-columns: 208px minmax(0, 1fr); align-items: stretch;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: border-color .3s, box-shadow .3s;
}
.gd-prov:hover { border-color: #d9dbe8; box-shadow: 0 18px 40px -38px rgba(19,28,51,.8); }
.gd-prov.is-hq { border-color: rgba(244,68,46,.4); box-shadow: 0 18px 40px -38px rgba(244,68,46,.7); }
.gd-prov.is-muni { background: var(--surface); }
.gd-prov-head {
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  gap: 3px; padding: 13px 18px; background: #f8fafd;
  border-right: 1px solid var(--line);
}
.gd-prov.is-hq .gd-prov-head { background: linear-gradient(120deg, #fff4ec, #f8fafd); }
.gd-prov-title { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; min-width: 0; }
.gd-prov-title h3 { font-size: 15.5px; letter-spacing: -.01em; }
.gd-prov-meta { flex: none; }
.gd-prov-meta span { font-size: 11.5px; color: var(--muted); }
.gd-prov-meta b { color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.gd-hq {
  font-size: 10.5px; font-weight: 700; color: var(--brand);
  background: var(--grad-soft); border: 1px solid rgba(244,68,46,.22);
  border-radius: 5px; padding: 2px 6px;
}
.gd-chips {
  display: flex; flex-wrap: wrap; align-content: center; gap: 7px; padding: 12px 18px;
}
.gd-cty {
  display: inline-block; padding: 4px 11px; border-radius: 7px;
  font-size: 13px; color: var(--muted); line-height: 1.5;
  background: #f5f7fc; border: 1px solid transparent;
  transition: color .2s, background .2s, border-color .2s, transform .2s;
}
.gd-cty:hover {
  color: var(--brand); background: var(--tint-warm);
  border-color: rgba(244,68,46,.3); transform: translateY(-1px);
}

/* ---------- misc ---------- */
.note-band {
  background: var(--tint-warm); border: 1px solid rgba(255,138,0,.25);
  border-radius: var(--radius); padding: 16px 20px; font-size: 13.5px;
  color: #8a5a1a; margin-top: 26px; line-height: 1.7;
}
.note-band b { color: #6b4210; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.show { opacity: 1; transform: none; }
[data-delay="1"].reveal { transition-delay: .1s; }
[data-delay="2"].reveal { transition-delay: .2s; }
[data-delay="3"].reveal { transition-delay: .3s; }

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1024px) {
  .main-nav { gap: 17px; }
  .main-nav > a { font-size: 13.5px; }
}
@media (max-width: 880px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-inner { justify-content: space-between; }
  .header-actions { margin-left: auto; }
  .header-actions .btn { display: none; }

  /* topbar mobile */
  .topbar-inner { justify-content: center; }
  .topbar-left { gap: 8px; font-size: 11.5px; }
  .topbar-left .dot, .topbar-left .hide-sm { display: none; }
  .sitemap-link { font-size: 11.5px; padding: 4px 9px 4px 8px; gap: 5px; }
  .sitemap-link svg { width: 12px; height: 12px; }

  /* sitemap mobile */
  .sm-grid { grid-template-columns: 1fr; gap: 10px; }
  .gd-prov { grid-template-columns: 1fr; }
  .gd-prov-head {
    flex-direction: row; align-items: center; justify-content: space-between;
    padding: 11px 14px 10px; border-right: 0; border-bottom: 1px solid var(--line);
  }
  .gd-prov-meta { margin-left: auto; }
  .gd-prov-title h3 { font-size: 14.5px; }
  .gd-chips { padding: 11px 14px 13px; gap: 6px; }
  .gd-cty { font-size: 12.5px; padding: 4px 9px; }
  .sm-item { padding: 14px 16px; }

  /* mobile footer — geogs 布局：品牌通栏 + 两组链接并排 */
  .site-footer { margin-top: 60px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; padding: 40px 0 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand > p { margin-top: 12px; font-size: 13px; line-height: 1.75; max-width: none; }
  .site-footer h4 { font-size: 12px; margin-bottom: 10px; letter-spacing: .08em; }
  .footer-grid a { font-size: 13px; padding: 3.5px 0; }
  .footer-contact { grid-column: auto; }
  .footer-contact-list li { font-size: 13px; }
  .friend-links { gap: 5px 12px; font-size: 11.5px; padding: 14px 0; }
  .friend-links a { font-size: 11.5px; }
  .footer-bottom { padding: 14px 0 22px; font-size: 11.5px; }

  .hero { padding: 52px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { gap: 18px; flex-wrap: nowrap; }
  .hero-stats b { font-size: 19px; }
  .hero-stats span { font-size: 11px; white-space: nowrap; }
  .page-hero { padding: 46px 0 44px; }
  .section { padding: 58px 0; }
  .section-head { margin-bottom: 34px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }

  /* promo-why: 同行布局已全局生效，此处仅压缩尺寸 */
  .promo-why:has(.ico) { padding: 20px 18px; }
  .promo-why:has(.ico) .ico { width: 40px; height: 40px; border-radius: 11px; }
  .promo-why:has(.ico) .ico svg { width: 20px; height: 20px; }
  .promo-why:has(.ico) h3 { font-size: 16px; }
  .promo-why:has(.ico) p { margin-top: 9px; font-size: 13.5px; }
  .promo-why:has(.ico) .promo-actions { margin: 14px 0 0; }

  /* act 卡片：编号徽章与标题同行 */
  .act { display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: center; padding: 22px 18px; }
  .act .idx { grid-row: 1; grid-column: 1; width: 32px; height: 32px; font-size: 14px; margin: 0; border-radius: 9px; }
  .act h3 { grid-row: 1; grid-column: 2; margin: 0; font-size: 16.5px; }
  .act .promo-list { grid-column: 1 / -1; margin-top: 13px; }

  /* 流程步骤：数字与标题同行，图标隐藏 */
  .flow-step { display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: center; padding: 20px 18px; }
  .fs-ico { grid-row: 1; grid-column: 1; margin: 0; }
  .fs-ico svg { display: none; }
  .fs-step-no { width: 30px; height: 30px; font-size: 13.5px; border-radius: 9px; }
  .flow-step h4 { grid-row: 1; grid-column: 2; margin: 0; font-size: 15.5px; }
  .flow-step p { grid-column: 1 / -1; margin-top: 10px; }
  .promo-plans { grid-template-columns: 1fr; gap: 28px; }
  .plan-grid { grid-template-columns: 1fr; gap: 26px; }
  .plan { padding: 24px 20px 22px; }
  .plan-sub { min-height: 0; }
  .footer-links { gap: 5px 12px; }
  .flow { grid-template-columns: 1fr 1fr; gap: 13px; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 46px 20px; border-radius: 16px; }
}
@media (max-width: 560px) {
  .shell, .shell-narrow { width: calc(100% - 32px); }
  .hero { padding: 40px 0 48px; }
  h1 { font-size: 29px; }
  .promo-actions .btn { flex: 1; }
  .flow { grid-template-columns: 1fr; }
  /* 手机端页脚紧凑版：三组横向一行、整体居中，块内左对齐 */
  .footer-grid { grid-template-columns: repeat(3, auto); justify-content: center; gap: 32px 24px; padding: 32px 0 24px; }
  .footer-brand > p { font-size: 12.5px; }
  .footer-bottom { padding-top: 14px; font-size: 11.5px; }
  /* QR 弹层屏幕居中，避免遮挡内容 */
  .float-contact { right: 14px; bottom: 14px; }
  .fc-btn { width: 46px; height: 46px; touch-action: manipulation; }
  /* 触屏上禁用 hover/focus 残留显示，仅由 .show 控制，防止双击后二维码错位 */
  .fc-wechat:hover .fc-qr, .fc-wechat:focus-within .fc-qr {
    opacity: 0; visibility: hidden; transform: translate(-50%, 14px);
  }
  .fc-qr {
    position: fixed; left: 50%; right: auto; bottom: 92px;
    width: min(78vw, 260px); padding: 15px 15px 13px;
    transform: translate(-50%, 14px);
  }
  /* 触屏上禁用 hover/focus 残留显示，仅由 .show 控制，防止双击后二维码错位；
     .show 规则需覆盖 hover/focus-within（点按后按钮保持焦点） */
  .fc-wechat.show .fc-qr, .fc-wechat.show:hover .fc-qr, .fc-wechat.show:focus-within .fc-qr {
    opacity: 1; visibility: visible; transform: translate(-50%, 0);
  }
  .fc-qr::after { display: none; }
  body:has(.fc-wechat.show)::before {
    content: ""; position: fixed; inset: 0; z-index: 89;
    background: rgba(15,27,61,.45);
    -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  }
  .chat-body { min-height: 0; padding: 18px 16px 20px; gap: 12px; }
  .msg .bub { font-size: 12.5px; padding: 10px 12px; }
  .msg.ai .bub .hl { white-space: normal; overflow-wrap: anywhere; }
  .chat-bar, .chat-foot { padding-left: 14px; padding-right: 14px; }
  .float-badge { padding: 9px 12px; font-size: 10.5px; }
  .float-badge b { font-size: 15px; }
  .float-badge.f1 { display: none; }
  .float-badge.f2 { right: -6px; top: -18px; }
  .ask-box form { flex-direction: column; }
  .ask-box form button { padding: 12px; }
  .form-grid { grid-template-columns: 1fr; }
  .cmp-table { font-size: 13px; }
  .cmp-table th, .cmp-table td { padding: 10px 12px; }
}