:root {
  --ink: #0E1B2A;
  --ink-2: #2C3E50;
  --muted: #5F7285;
  --line: #E2E9F0;
  --bg: #FFFFFF;
  --bg-alt: #F5F8FB;
  --navy: #0B3D5C;
  --navy-deep: #082B41;
  --teal: #0E7C86;
  --amber: #E8833A;
  --amber-soft: #FDF1E7;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(14, 27, 42, .06), 0 4px 12px rgba(14, 27, 42, .05);
  --shadow-md: 0 2px 6px rgba(14, 27, 42, .07), 0 18px 40px -12px rgba(14, 27, 42, .16);
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { line-height: 1.28; letter-spacing: -.01em; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 20px -14px rgba(14,27,42,.4); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { display: flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; letter-spacing: .02em; }
.brand-text em {
  font-style: normal; font-size: 9.5px; letter-spacing: .18em;
  color: var(--muted); margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 14.5px; color: var(--ink-2); transition: color .16s ease; }
.nav a:hover { color: var(--navy); }
.nav .nav-cta {
  background: var(--navy); color: #fff; padding: 9px 18px; border-radius: 999px;
  font-size: 14px; transition: background .16s ease, transform .16s ease;
}
.nav .nav-cta:hover { background: var(--navy-deep); color: #fff; transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px 0; border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 84px 0 76px;
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(14, 124, 134, .10), transparent 65%),
    radial-gradient(700px 380px at 4% 0%, rgba(232, 131, 58, .09), transparent 60%),
    #fff;
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: center; }

.eyebrow {
  font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--teal); font-weight: 600; margin-bottom: 18px;
}

.hero h1 { font-size: clamp(32px, 4.1vw, 50px); font-weight: 700; letter-spacing: -.02em; }
.hl { position: relative; color: var(--navy); }
.hl::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 9px;
  background: linear-gradient(90deg, rgba(232,131,58,.34), rgba(232,131,58,.08));
  border-radius: 3px; z-index: -1;
}

.lede { margin-top: 22px; font-size: 16.5px; color: var(--ink-2); max-width: 540px; }

.hero-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px; border-radius: 999px; font-size: 15px; font-weight: 500;
  border: 1px solid transparent; cursor: pointer; transition: all .18s ease;
  font-family: inherit;
}
.btn-primary { background: var(--navy); color: #fff; box-shadow: 0 8px 20px -10px rgba(11, 61, 92, .7); }
.btn-primary:hover { background: var(--navy-deep); transform: translateY(-1px); box-shadow: 0 12px 24px -10px rgba(11, 61, 92, .75); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.btn-ghost { border-color: var(--line); color: var(--ink-2); background: #fff; }
.btn-ghost:hover { border-color: #C9D6E2; color: var(--navy); }
.btn-block { width: 100%; }

.hero-note { margin-top: 18px; font-size: 12.5px; color: #93A3B4; }

/* Hero panel */
.hero-panel { position: relative; }
.panel-glow {
  position: absolute; inset: 12% 6% -6% 6%;
  background: linear-gradient(135deg, rgba(14,124,134,.18), rgba(232,131,58,.14));
  filter: blur(36px); border-radius: 40px;
}
.panel-card {
  position: relative;
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 20px; box-shadow: var(--shadow-md);
}
.panel-head { display: flex; align-items: center; gap: 6px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.panel-head .dot { width: 8px; height: 8px; border-radius: 50%; background: #D7E0E9; }
.panel-head .dot:first-child { background: #E8833A; }
.panel-title { margin-left: 8px; font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }

.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 18px 0 6px; }
.kpi { text-align: left; }
.kpi b { display: block; font-size: 26px; color: var(--navy); letter-spacing: -.02em; }
.kpi span { font-size: 12px; color: var(--muted); }

.bars { display: flex; align-items: flex-end; gap: 7px; height: 112px; padding: 14px 0 8px; }
.bar {
  flex: 1; height: var(--h, 40%); border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #2E7C99, #0B3D5C);
  opacity: .9;
}
.bar:nth-child(3n) { background: linear-gradient(180deg, #F0A468, #E8833A); }

.panel-foot { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--line); }
.tag-live { font-size: 11.5px; color: #0E7C86; background: #E9F6F7; padding: 3px 9px; border-radius: 999px; }
.panel-sub { font-size: 11.5px; color: var(--muted); }

/* ---------- Strip ---------- */
.strip { background: var(--navy); color: #fff; }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.strip-item { padding: 26px 20px; border-left: 1px solid rgba(255,255,255,.12); }
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-item b { display: block; font-size: 24px; font-weight: 600; letter-spacing: -.01em; }
.strip-item span { font-size: 13px; color: rgba(255,255,255,.68); }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: 46px; }
.section-head h2 { font-size: clamp(24px, 2.7vw, 34px); font-weight: 700; }
.section-sub { margin-top: 14px; color: var(--muted); font-size: 15.5px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #D3DFEA; }
.card-icon {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: var(--amber-soft); color: var(--navy); margin-bottom: 18px;
}
.card h3 { font-size: 18.5px; font-weight: 650; }
.card > p { margin-top: 10px; color: var(--muted); font-size: 14.8px; }
.card-list { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
.card-list li { position: relative; padding-left: 16px; font-size: 13.8px; color: var(--ink-2); margin-top: 6px; }
.card-list li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--teal);
}

/* Steps */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.steps li {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 18px;
  position: relative;
}
.steps li::after {
  content: ""; position: absolute; top: 34px; right: -10px; width: 6px; height: 6px;
  border-top: 1.5px solid #C6D4E1; border-right: 1.5px solid #C6D4E1; transform: rotate(45deg);
}
.steps li:last-child::after { display: none; }
.step-no { font-size: 12px; font-weight: 700; color: var(--amber); letter-spacing: .08em; }
.steps h4 { margin-top: 8px; font-size: 15.5px; }
.steps p { margin-top: 8px; font-size: 13.5px; color: var(--muted); }

/* Cases */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  background: linear-gradient(180deg, #fff, #FCFDFE);
}
.case-tag {
  display: inline-block; font-size: 11.5px; letter-spacing: .06em; color: var(--navy);
  background: #EDF3F8; padding: 4px 10px; border-radius: 6px; margin-bottom: 14px;
}
.case h3 { font-size: 17px; }
.case p { margin-top: 10px; font-size: 14px; color: var(--muted); min-height: 60px; }
.case-metric { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.case-metric b { font-size: 22px; color: var(--amber); }
.case-metric span { margin-left: 8px; font-size: 12.5px; color: var(--muted); }

/* About */
.about-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 56px; align-items: start; }
.about-grid h2 { font-size: clamp(24px, 2.7vw, 32px); }
.about-p { margin-top: 18px; color: var(--ink-2); font-size: 15.5px; }
.about-list { margin-top: 26px; border-top: 1px solid var(--line); }
.about-list li {
  display: flex; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14.5px;
}
.about-list span { flex: 0 0 88px; color: var(--muted); font-size: 13.5px; }

.about-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.about-card h3 { font-size: 17px; }
.who { margin: 18px 0 24px; }
.who li {
  position: relative; padding-left: 22px; font-size: 14.5px; color: var(--ink-2);
  margin-top: 12px;
}
.who li::before {
  content: ""; position: absolute; left: 2px; top: 7px; width: 9px; height: 9px;
  border-radius: 50%; border: 2px solid var(--teal); opacity: .55;
}

/* ---------- Message board ---------- */
.board-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }

.msg-form {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.field { display: flex; flex-direction: column; margin-bottom: 18px; }
.field-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field label { font-size: 13.5px; color: var(--ink-2); margin-bottom: 7px; font-weight: 500; }
.field label i { color: var(--amber); font-style: normal; }
.field input, .field textarea {
  width: 100%; font-family: inherit; font-size: 14.5px; color: var(--ink);
  padding: 11px 13px; border: 1px solid #D8E2EC; border-radius: 9px; background: #fff;
  transition: border-color .16s ease, box-shadow .16s ease; resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: #A9B7C6; }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(14, 124, 134, .12);
}
.field.invalid input, .field.invalid textarea { border-color: #D9534F; box-shadow: 0 0 0 3px rgba(217,83,79,.10); }
.counter { text-align: right; font-size: 11.5px; color: #A9B7C6; margin-top: 6px; }

.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-msg { font-size: 13.5px; color: var(--muted); min-height: 20px; }
.form-msg.ok { color: #1B7F5A; }
.form-msg.err { color: #C0392B; }

.msg-panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-alt); overflow: hidden; }
.msg-panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--line); background: #fff;
}
.msg-panel-head h3 { font-size: 15.5px; }
.link-btn {
  background: none; border: 0; padding: 4px 2px; font-family: inherit; font-size: 13px;
  color: var(--teal); cursor: pointer;
}
.link-btn:hover { text-decoration: underline; }

.msg-list { max-height: 520px; overflow-y: auto; padding: 8px 22px 18px; }
.msg-item { padding: 16px 0; border-bottom: 1px solid #E8EEF4; }
.msg-item:last-child { border-bottom: 0; }
.msg-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.msg-avatar {
  width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  background: var(--navy); color: #fff; font-size: 12.5px; font-weight: 600; flex: 0 0 auto;
}
.msg-name { font-size: 14px; font-weight: 600; }
.msg-company { font-size: 12px; color: var(--muted); background: #EDF3F8; padding: 2px 8px; border-radius: 5px; }
.msg-time { margin-left: auto; font-size: 12px; color: #A9B7C6; }
.msg-body { margin-top: 9px; font-size: 14.2px; color: var(--ink-2); white-space: pre-wrap; word-break: break-word; }

.msg-empty { padding: 40px 0; text-align: center; font-size: 14px; color: var(--muted); }
.msg-empty.error { color: #C0392B; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.72); padding: 44px 0 34px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand strong { display: block; color: #fff; font-size: 16px; }
.footer-brand span { font-size: 13px; }
.footer-links { display: flex; gap: 22px; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.copyright { width: 100%; margin-top: 22px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12.5px; color: rgba(255,255,255,.45); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero { padding: 60px 0 56px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li::after { display: none; }
  .cases { grid-template-columns: 1fr; }
  .case p { min-height: 0; }
  .board-grid { grid-template-columns: 1fr; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-item { padding: 22px 16px; }
  .strip-item:nth-child(odd) { border-left: 0; padding-left: 0; }
  .strip-item:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.12); }
}

@media (max-width: 760px) {
  .nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 24px 18px; display: none; box-shadow: var(--shadow-md);
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 0; width: 100%; font-size: 15px; }
  .nav .nav-cta { width: auto; margin-top: 10px; padding: 10px 20px; }
  .nav-toggle { display: block; }
  .cards { grid-template-columns: 1fr; }
  .field-2 { grid-template-columns: 1fr; gap: 0; }
  .section { padding: 64px 0; }
  .card, .msg-form { padding: 22px; }
  .form-foot { flex-direction: column; align-items: flex-start; }
  .msg-time { margin-left: 0; width: 100%; }
}

/* 备案号 */
.copyright .beian {
  display: inline-block;
  margin-top: 6px;
  color: rgba(255, 255, 255, .45);
  transition: color .16s ease;
}
.copyright .beian:hover { color: rgba(255, 255, 255, .82); }