/* ==========================================================
   飞云 V2 — 全站样式
   ========================================================== */
:root {
  --primary: #2563eb;
  --primary-2: #6d5dfc;
  --primary-soft: #eaf1ff;
  --ink: #0f1b3d;
  --text: #1f2d4d;
  --muted: #5b6b86;
  --line: #e3eaf6;
  --bg: #f5f8ff;
  --card: #ffffff;
  --ok: #12a37f;
  --warn: #c2570c;
  --danger: #d1342a;
  --grad: linear-gradient(135deg, #2563eb 0%, #5b6cf9 55%, #7c5cff 100%);
  --shadow-sm: 0 4px 14px rgba(30, 64, 140, 0.07);
  --shadow: 0 16px 40px rgba(30, 64, 140, 0.1);
  --shadow-lg: 0 28px 70px rgba(37, 70, 160, 0.18);
  --radius: 16px;
  --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; }
::selection { background: var(--primary); color: #fff; }

.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }

/* ---------- 公告条 ---------- */
.announce {
  background: #0d1a3f;
  color: #cfe0ff;
  font-size: 13px;
  text-align: center;
  padding: 8px 16px;
}
.announce b { color: #fff; margin-right: 10px; }
.announce i {
  display: inline-block;
  width: 7px; height: 7px; border-radius: 50%;
  background: #38bdf8;
  margin-right: 8px;
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.25);
  vertical-align: 1px;
}
.announce a { color: #7dd3fc; margin-left: 10px; }
.announce a:hover { text-decoration: underline; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 6px 24px rgba(30, 64, 140, 0.06); }

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

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--ink); letter-spacing: 0.02em; }
.brand img { width: 36px; height: 36px; }
.brand small { display: block; font-size: 10px; font-weight: 600; color: var(--muted); letter-spacing: 0.18em; line-height: 1; margin-top: 2px; }
.brand span { line-height: 1.1; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: #34456a;
  border-radius: 10px;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--primary); background: var(--primary-soft); }
.nav a.is-current { color: var(--primary); font-weight: 700; }
.nav a.is-current::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: -13px;
  height: 3px; border-radius: 3px; background: var(--primary);
}

.header-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
  display: none; margin-left: auto;
  width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; stroke: var(--ink); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 22px;
  border: 1px solid transparent; border-radius: 12px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:disabled { opacity: 0.55; cursor: default; transform: none; }
.btn-primary { color: #fff; background: var(--grad); box-shadow: 0 10px 24px rgba(55, 90, 240, 0.32); }
.btn-primary:hover { box-shadow: 0 14px 30px rgba(55, 90, 240, 0.42); }
.btn-outline { color: var(--primary); background: #fff; border-color: #c7d8fb; }
.btn-outline:hover { border-color: var(--primary); background: var(--primary-soft); }
.btn-ghost { color: var(--primary); background: var(--primary-soft); }
.btn-ghost:hover { background: #dce8ff; }
.btn-text { color: var(--muted); background: transparent; min-height: 38px; }
.btn-text:hover { color: var(--primary); transform: none; }
.btn-block { width: 100%; }
.btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; border-radius: 10px; }
.btn-lg { min-height: 52px; padding: 0 30px; font-size: 16px; }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18); }
.btn-line-white { color: #fff; border-color: rgba(255, 255, 255, 0.5); background: transparent; }
.btn-line-white:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

/* ---------- 区块通用 ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.eyebrow {
  display: inline-block; margin-bottom: 12px; padding: 4px 14px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--primary); background: var(--primary-soft); border-radius: 999px;
}
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); line-height: 1.25; color: var(--ink); font-weight: 800; letter-spacing: 0.01em; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(700px 380px at 8% 10%, rgba(56, 189, 248, 0.16), transparent 62%),
    radial-gradient(760px 420px at 96% 20%, rgba(124, 92, 255, 0.16), transparent 62%),
    linear-gradient(180deg, #f3f7ff 0%, #ffffff 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000 20%, transparent 90%);
  -webkit-mask-image: linear-gradient(to bottom, #000 20%, transparent 90%);
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr 0.95fr; align-items: center; gap: 40px;
  padding: 72px 0 96px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px 6px 12px; margin-bottom: 22px;
  font-size: 14px; font-weight: 600; color: #34456a;
  background: #fff; border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--shadow-sm);
}
.hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: #22c3ff; box-shadow: 0 0 0 4px rgba(34, 195, 255, 0.22); }
.hero h1 { font-size: clamp(36px, 4.6vw, 56px); line-height: 1.16; font-weight: 800; color: var(--ink); letter-spacing: 0.01em; }
.hero h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { margin-top: 22px; max-width: 540px; font-size: 17px; color: var(--muted); line-height: 1.85; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-checks { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px 26px; font-size: 14px; color: #3a4b70; }
.hero-checks li { display: inline-flex; align-items: center; gap: 8px; }
.hero-checks li::before {
  content: ""; width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='none' stroke='%232563eb' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round' d='M5.5 10.5l3 3 6-6.5'/%3E%3C/svg%3E") center / 20px no-repeat;
}

/* Hero 右侧：厂商环绕动效 */
.orbit { position: relative; width: 100%; max-width: 520px; aspect-ratio: 1 / 0.95; margin-left: auto; }
.orbit-ring {
  position: absolute; left: 50%; top: 50%; border-radius: 50%;
  border: 1px dashed rgba(37, 99, 235, 0.28);
  transform: translate(-50%, -50%);
}
.orbit-ring.r1 { width: 92%; aspect-ratio: 1; animation: spin 60s linear infinite; }
.orbit-ring.r2 { width: 66%; aspect-ratio: 1; border-style: solid; border-color: rgba(124, 92, 255, 0.16); animation: spin 90s linear infinite reverse; }
.orbit-ring.r1::before, .orbit-ring.r2::before {
  content: ""; position: absolute; width: 10px; height: 10px; border-radius: 50%; background: #22c3ff; top: 10%; left: 14%;
  box-shadow: 0 0 0 5px rgba(34, 195, 255, 0.2);
}
.orbit-ring.r2::before { background: #7c5cff; box-shadow: 0 0 0 5px rgba(124, 92, 255, 0.2); top: auto; bottom: 8%; left: auto; right: 16%; }

.core-card {
  position: absolute; left: 50%; top: 50%; width: 52%; transform: translate(-50%, -50%);
  padding: 26px 22px; border-radius: 24px; text-align: center; color: #fff;
  background: var(--grad); box-shadow: var(--shadow-lg);
}
.core-card .core-logo { width: 62px; height: 62px; margin: 0 auto 14px; padding: 10px; background: #fff; border-radius: 18px; box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14); }
.core-card h3 { font-size: 19px; line-height: 1.35; font-weight: 700; }
.core-card p { margin-top: 6px; font-size: 12.5px; opacity: 0.82; }
.core-bar { margin: 16px auto 0; width: 70%; height: 5px; border-radius: 5px; background: rgba(255, 255, 255, 0.28); overflow: hidden; }
.core-bar::after { content: ""; display: block; height: 100%; width: 40%; border-radius: 5px; background: #a5f3fc; animation: slide 2.4s ease-in-out infinite; }

.chip {
  position: absolute; display: flex; align-items: center; gap: 10px;
  padding: 11px 16px 11px 12px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); animation: float 6s ease-in-out infinite;
}
.chip img { width: 34px; height: 26px; object-fit: contain; }
.chip b { display: block; font-size: 14px; color: var(--ink); line-height: 1.2; }
.chip small { display: block; font-size: 11px; color: var(--muted); }
.chip.c1 { left: 0; top: 10%; }
.chip.c2 { right: 0; top: 4%; animation-delay: -2s; }
.chip.c3 { right: 2%; bottom: 14%; animation-delay: -4s; }
.chip.c4 { left: 4%; bottom: 8%; animation-delay: -1s; }
.chip .dot { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: #e6faf3; }
.chip .dot svg { width: 20px; height: 20px; }
.chip .dot.blue { background: var(--primary-soft); }

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(260%); } }

/* ---------- 厂商区 ---------- */
.vendor-wrap { margin-top: -52px; position: relative; z-index: 2; }
.vendor-panel {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); overflow: hidden;
}
.vendor-item { display: flex; gap: 22px; padding: 34px 36px; }
.vendor-item + .vendor-item { border-left: 1px solid var(--line); }
.vendor-logo { flex: none; width: 68px; height: 68px; padding: 12px; border-radius: 18px; background: var(--bg); border: 1px solid var(--line); }
.vendor-logo img { width: 100%; height: 100%; object-fit: contain; }
.vendor-item h3 { font-size: 20px; color: var(--ink); }
.vendor-item p { margin-top: 8px; font-size: 14.5px; color: var(--muted); }
.tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag { padding: 3px 11px; font-size: 12.5px; font-weight: 500; color: #3d5280; background: var(--primary-soft); border-radius: 8px; }

/* ---------- 卡片网格 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  position: relative; display: block; padding: 32px 28px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #c7d8fb; }
.icon-box {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 20px;
  background: var(--grad); box-shadow: 0 10px 22px rgba(70, 100, 240, 0.28);
}
.icon-box svg { width: 28px; height: 28px; stroke: #fff; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-box.soft { background: var(--primary-soft); box-shadow: none; }
.icon-box.soft svg { stroke: var(--primary); }
.card h3 { font-size: 19px; color: var(--ink); margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--muted); }
.card .more { display: inline-block; margin-top: 18px; font-size: 14.5px; font-weight: 600; color: var(--primary); }
.card .more::after { content: " →"; transition: margin 0.2s; }
.card:hover .more::after { margin-left: 4px; }

.feature { padding: 28px 24px; }
.feature h3 { font-size: 17px; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: s; position: relative; }
.steps::before {
  content: ""; position: absolute; left: 12%; right: 12%; top: 28px; height: 2px;
  background: repeating-linear-gradient(90deg, #b9cdf6 0 8px, transparent 8px 16px);
}
.step { position: relative; text-align: center; padding: 0 12px; }
.step-num {
  position: relative; z-index: 1; width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%;
  display: grid; place-items: center; font-size: 20px; font-weight: 800; color: #fff;
  background: var(--grad); box-shadow: 0 0 0 8px #fff, 0 10px 22px rgba(70, 100, 240, 0.3);
}
.section-alt .step-num { box-shadow: 0 0 0 8px var(--bg), 0 10px 22px rgba(70, 100, 240, 0.3); }
.step h3 { font-size: 17px; color: var(--ink); margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--muted); }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 28px 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.stat b { display: block; font-size: 32px; line-height: 1.2; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { font-size: 14px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; transition: box-shadow 0.2s, border-color 0.2s; }
.faq details[open] { box-shadow: var(--shadow-sm); border-color: #c7d8fb; }
.faq summary {
  position: relative; list-style: none; cursor: pointer; padding: 20px 56px 20px 24px;
  font-size: 16.5px; font-weight: 600; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; margin-top: -8px;
  border-right: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(45deg); transition: transform 0.2s, margin 0.2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq .answer { padding: 0 24px 22px; color: var(--muted); font-size: 15px; }
.faq .answer p + p { margin-top: 8px; }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; text-align: center; color: #fff; padding: 76px 24px;
  border-radius: 28px; background: var(--grad); box-shadow: var(--shadow-lg);
}
.cta::before, .cta::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255, 255, 255, 0.08); }
.cta::before { width: 380px; height: 380px; left: -110px; top: -190px; }
.cta::after { width: 300px; height: 300px; right: -80px; bottom: -150px; }
.cta > * { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; }
.cta p { max-width: 620px; margin: 14px auto 0; opacity: 0.88; }
.cta .hero-actions { justify-content: center; }
.cta-wrap { padding: 0 0 88px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0d1a3f; color: #aebbdc; padding: 64px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.site-footer .brand { color: #fff; }
.site-footer .brand small { color: #8ea0cc; }
.site-footer p { margin-top: 16px; max-width: 320px; line-height: 1.8; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer li + li { margin-top: 10px; }
.site-footer a:hover { color: #7dd3fc; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; font-size: 13px; color: #8190b4; text-align: center; }

/* 悬浮客服 */
.fab {
  position: fixed; right: 22px; bottom: 26px; z-index: 40;
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  background: var(--grad); box-shadow: 0 14px 30px rgba(55, 90, 240, 0.4); transition: transform 0.2s;
}
.fab:hover { transform: scale(1.08); }
.fab svg { width: 26px; height: 26px; fill: #fff; }
.fab span {
  position: absolute; right: 66px; white-space: nowrap; padding: 7px 14px; font-size: 13px; color: #fff; background: #0d1a3f;
  border-radius: 8px; opacity: 0; pointer-events: none; transform: translateX(6px); transition: opacity 0.2s, transform 0.2s;
}
.fab:hover span { opacity: 1; transform: none; }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }

/* ==========================================================
   内页：页头 + 流程面板
   ========================================================== */
.page-hero {
  position: relative; overflow: hidden; text-align: center; padding: 56px 0 120px;
  background:
    radial-gradient(600px 300px at 10% 0%, rgba(56, 189, 248, 0.16), transparent 62%),
    radial-gradient(600px 300px at 92% 10%, rgba(124, 92, 255, 0.16), transparent 62%),
    linear-gradient(180deg, #f1f6ff, #fff);
}
.page-hero h1 { font-size: clamp(30px, 4vw, 42px); font-weight: 800; color: var(--ink); }
.page-hero p { margin: 14px auto 0; max-width: 620px; color: var(--muted); font-size: 16.5px; }
.crumb { margin-bottom: 14px; font-size: 13.5px; color: var(--muted); }
.crumb a:hover { color: var(--primary); }

.work { margin-top: -84px; position: relative; z-index: 2; padding-bottom: 88px; }
.work-grid { display: grid; grid-template-columns: 340px 1fr; gap: 28px; align-items: start; }

.side-card { padding: 28px 26px; background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-sm); }
.side-card + .side-card { margin-top: 20px; }
.side-card h3 { font-size: 17px; color: var(--ink); margin-bottom: 16px; }
.side-list li { position: relative; padding-left: 28px; font-size: 14.5px; color: var(--muted); }
.side-list li + li { margin-top: 12px; }
.side-list li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='none' stroke='%232563eb' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round' d='M5.5 10.5l3 3 6-6.5'/%3E%3C/svg%3E") center / 18px no-repeat;
}
.side-list b { color: var(--ink); }
.side-note { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.side-contact { display: flex; align-items: center; gap: 12px; margin-top: 14px; padding: 12px 14px; background: var(--bg); border-radius: 12px; font-size: 14px; }
.side-contact b { color: var(--ink); }

.flow-card { padding: 30px 32px 34px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); min-height: 420px; }
.flow-title { font-size: 22px; font-weight: 800; color: var(--ink); margin-bottom: 22px; }

.stepper { display: flex; margin-bottom: 28px; counter-reset: st; }
.stepper li { flex: 1; position: relative; text-align: center; font-size: 13px; color: #8a98b5; counter-increment: st; }
.stepper li::before {
  content: counter(st); display: grid; place-items: center; width: 30px; height: 30px; margin: 0 auto 8px;
  border-radius: 50%; font-weight: 700; font-size: 13px; color: #8a98b5; background: #eef2fa; position: relative; z-index: 1;
  transition: all 0.25s;
}
.stepper li::after { content: ""; position: absolute; top: 14px; left: calc(50% + 20px); right: calc(-50% + 20px); height: 2px; background: #e3eaf6; }
.stepper li:last-child::after { display: none; }
.stepper li.is-active { color: var(--primary); font-weight: 700; }
.stepper li.is-active::before { color: #fff; background: var(--grad); box-shadow: 0 6px 14px rgba(70, 100, 240, 0.35); }
.stepper li.is-done { color: var(--ink); }
.stepper li.is-done::before {
  content: ""; background: var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round' d='M5.5 10.5l3 3 6-6.5'/%3E%3C/svg%3E") center / 18px no-repeat;
}
.stepper li.is-done::after { background: var(--ok); }

/* 流程内部组件 */
.flow-tip { font-size: 14.5px; color: var(--muted); margin-bottom: 16px; line-height: 1.75; }
.flow-warn { color: var(--warn); }
.flow-success { color: var(--ok); font-weight: 700; font-size: 16px; }
.flow-muted { font-size: 13.5px; min-height: 1.6em; margin: 10px 0 0; }
.flow-countdown { text-align: center; margin: 14px 0 6px; color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

.flow-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 16px; }
.flow-grid-providers { grid-template-columns: repeat(2, 1fr); gap: 16px; }

.choice {
  min-height: 52px; padding: 0 14px; font-size: 15px; font-weight: 600; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: 12px; cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.choice:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.choice:disabled { opacity: 0.55; cursor: default; }

.provider-card {
  display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 26px 14px;
  font-size: 16px; font-weight: 700; color: var(--ink);
  background: #fff; border: 1.5px solid var(--line); border-radius: 16px; cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.provider-card img { height: 36px; width: auto; }
.provider-card:hover:not(:disabled) { border-color: var(--primary); background: var(--primary-soft); transform: translateY(-3px); box-shadow: var(--shadow); }
.provider-card:disabled { opacity: 0.55; cursor: default; }

.input-row { display: flex; gap: 10px; margin-bottom: 4px; }
.input {
  flex: 1; min-width: 0; height: 48px; padding: 0 16px; font-size: 15px; color: var(--ink);
  background: #fff; border: 1px solid #cfdbf2; border-radius: 12px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12); }
.input::placeholder { color: #9aa8c4; }
.input-row .btn { min-width: 88px; height: 48px; }

.flow-rows { margin: 4px 0 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); }
.flow-row { display: flex; justify-content: space-between; gap: 18px; padding: 12px 18px; font-size: 14.5px; }
.flow-row + .flow-row { border-top: 1px solid var(--line); }
.flow-row span { color: var(--muted); flex: none; }
.flow-row b { color: var(--ink); text-align: right; word-break: break-all; font-weight: 700; }

.pay-box {
  margin: 4px 0 12px; padding: 20px 16px; text-align: center; border-radius: 16px; color: #fff; background: var(--grad);
  box-shadow: 0 14px 30px rgba(70, 100, 240, 0.28);
}
.pay-box small { display: block; font-size: 13px; opacity: 0.85; }
.pay-box strong { display: block; margin-top: 4px; font-size: 32px; font-weight: 800; letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.pay-address {
  margin-bottom: 12px; padding: 14px 16px; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13.5px;
  color: var(--ink); word-break: break-all; text-align: center; background: var(--bg); border: 1px dashed #b9cdf6; border-radius: 12px;
}

/* ==========================================================
   帮助中心
   ========================================================== */
.help-grid { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: start; }
.help-toc { position: sticky; top: 96px; padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.help-toc h4 { font-size: 14px; color: var(--muted); margin-bottom: 10px; letter-spacing: 0.08em; }
.help-toc a { display: block; padding: 9px 12px; font-size: 14.5px; color: #34456a; border-radius: 10px; }
.help-toc a:hover { color: var(--primary); background: var(--primary-soft); }
.help-block + .help-block { margin-top: 52px; }
.help-block > h2 { font-size: 24px; color: var(--ink); margin-bottom: 20px; padding-left: 14px; border-left: 4px solid var(--primary); }
.help-block .faq { max-width: none; }
.notice-box { padding: 20px 24px; background: #fff8ec; border: 1px solid #ffe2b4; border-radius: 14px; color: #7a4a0f; font-size: 14.5px; line-height: 1.85; }
.notice-box li { position: relative; padding-left: 16px; }
.notice-box li::before { content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: #e8851a; }
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; padding: 48px 0 84px; }
  .orbit { margin: 12px auto 0; max-width: 480px; }
  .grid-4, .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .work-grid { grid-template-columns: 1fr; }
  .work-grid aside { order: 2; }
  .help-grid { grid-template-columns: 1fr; }
  .help-toc { position: static; display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
  .help-toc h4 { width: 100%; margin: 0 0 6px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .header-inner { height: 60px; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 2px;
    margin: 0; padding: 12px 20px 18px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 18px 30px rgba(30, 64, 140, 0.1);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 14px; }
  .nav a.is-current::after { display: none; }
  .nav a.is-current { background: var(--primary-soft); }
  .header-cta { display: none; }
  .vendor-panel { grid-template-columns: 1fr; }
  .vendor-item + .vendor-item { border-left: 0; border-top: 1px solid var(--line); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 32px); }
  .announce { font-size: 12px; }
  .grid-4, .stats, .contact-cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .flow-card { padding: 22px 18px 26px; }
  .stepper li { font-size: 11.5px; }
  .vendor-item { padding: 26px 22px; flex-direction: column; gap: 14px; }
  .chip { padding: 8px 12px 8px 9px; }
  .chip img { width: 26px; }
  .chip b { font-size: 12.5px; }
  .cta { padding: 56px 20px; border-radius: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}