/* ===== 基础与变量 ===== */
:root {
  --blue: #1d4ed8;
  --blue-deep: #1e3a8a;
  --cyan: #06b6d4;
  --ink: #0f172a;
  --slate: #475569;
  --muted: #94a3b8;
  --line: #e5e9f2;
  --bg-alt: #f6f8fc;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 18px 50px -20px rgba(15, 23, 42, 0.25);
  --shadow-sm: 0 8px 24px -12px rgba(15, 23, 42, 0.2);
  --maxw: 1180px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { text-decoration: none; color: inherit; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: all .25s ease;
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff; box-shadow: 0 12px 28px -12px rgba(29, 78, 216, .7);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -12px rgba(29, 78, 216, .8); }
.btn--ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.4); }
.btn--ghost:hover { background: rgba(255,255,255,.22); }
.btn--block { width: 100%; }

/* ===== 导航 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all .3s ease; padding: 18px 0;
}
.nav.is-scrolled {
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  box-shadow: 0 6px 24px -16px rgba(15,23,42,.4); padding: 12px 0;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand__logo {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; font-size: 20px;
  box-shadow: 0 8px 20px -8px rgba(29,78,216,.7);
}
.brand__name { font-size: 20px; letter-spacing: .5px; color: #fff; transition: color .3s; }
.nav.is-scrolled .brand__name { color: var(--ink); }

.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a { color: rgba(255,255,255,.9); font-size: 15px; font-weight: 500; transition: color .2s; }
.nav.is-scrolled .nav__links a { color: var(--slate); }
.nav__links a:hover { color: var(--cyan); }
.nav__cta { color: #fff !important; border: 1px solid rgba(255,255,255,.5); padding: 9px 20px; }
.nav.is-scrolled .nav__cta { color: var(--blue) !important; border-color: var(--blue); background: transparent; }
.nav.is-scrolled .nav__cta:hover { background: var(--blue); color: #fff !important; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }
.nav.is-scrolled .nav__toggle span { background: var(--ink); }

/* ===== Hero ===== */
.hero { position: relative; padding: 170px 0 120px; color: #fff; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(6,182,212,.35), transparent 60%),
    radial-gradient(700px 500px at 10% 10%, rgba(29,78,216,.5), transparent 55%),
    linear-gradient(135deg, #0b1f4d 0%, #122a6b 45%, #0e3a73 100%);
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .5;
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.badge {
  display: inline-block; padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25); margin-bottom: 22px;
}
.hero__title { font-size: clamp(34px, 5vw, 56px); line-height: 1.15; font-weight: 800; letter-spacing: .5px; }
.hero__title .grad {
  background: linear-gradient(135deg, #67e8f9, #a5f3fc); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}
.hero__sub { margin: 22px 0 32px; font-size: 17px; color: rgba(255,255,255,.82); max-width: 520px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__trust { list-style: none; display: flex; gap: 38px; margin-top: 42px; }
.hero__trust li { display: flex; flex-direction: column; }
.hero__trust strong { font-size: 26px; font-weight: 800; }
.hero__trust span { font-size: 13px; color: rgba(255,255,255,.7); }

.hero__wave {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 90px;
  background: var(--white);
  clip-path: polygon(0 100%, 100% 100%, 100% 30%, 50% 60%, 0 30%);
}

/* 手机模型 */
.hero__card { display: grid; place-items: center; }
.phone {
  width: 280px; height: 560px; background: #0b1220; border-radius: 42px; padding: 14px;
  box-shadow: 0 40px 80px -30px rgba(0,0,0,.6); position: relative; border: 2px solid rgba(255,255,255,.08);
}
.phone__notch { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); width: 120px; height: 22px; background: #0b1220; border-radius: 0 0 14px 14px; z-index: 3; }
.phone__screen { width: 100%; height: 100%; background: #0f1b3a; border-radius: 30px; overflow: hidden; position: relative; }
.app-map { height: 320px; background: linear-gradient(160deg, #16274f, #0f1b3a); position: relative; }
.app-map .route { position: absolute; top: 60px; left: 40px; width: 200px; height: 200px; border: 3px dashed rgba(6,182,212,.6); border-radius: 0 0 0 100%; transform: rotate(8deg); }
.pin { position: absolute; width: 14px; height: 14px; border-radius: 50%; }
.pin--start { top: 70px; left: 50px; background: #22c55e; box-shadow: 0 0 0 5px rgba(34,197,94,.25); }
.pin--end { bottom: 60px; right: 60px; background: var(--cyan); box-shadow: 0 0 0 5px rgba(6,182,212,.25); }
.car { position: absolute; top: 150px; left: 120px; font-size: 26px; animation: drive 4s ease-in-out infinite; }
@keyframes drive { 0%,100% { transform: translate(0,0); } 50% { transform: translate(20px,-30px); } }
.app-card {
  position: absolute; left: 12px; right: 12px; bottom: 12px; background: #fff; color: var(--ink);
  border-radius: 20px; padding: 18px; box-shadow: 0 20px 40px -20px rgba(0,0,0,.4);
}
.app-card__row { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--slate); padding: 6px 0; }
.app-card__row strong { color: var(--ink); font-size: 16px; }
.app-card__row .price { color: var(--blue); }
.app-card__btn { margin-top: 12px; background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; text-align: center; padding: 13px; border-radius: 12px; font-weight: 700; }

/* ===== 通用 Section ===== */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section__head--light { margin-bottom: 40px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--blue);
  text-transform: uppercase; margin-bottom: 14px;
}
.eyebrow--light { color: #67e8f9; }
.section__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; line-height: 1.25; }
.section__desc { margin-top: 16px; color: var(--slate); font-size: 16px; }

/* ===== 主营业务 ===== */
.biz { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.biz__card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px;
  box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; position: relative; overflow: hidden;
}
.biz__card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 5px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}
.biz__card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.biz__icon {
  width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center; font-size: 32px;
  background: linear-gradient(135deg, rgba(29,78,216,.12), rgba(6,182,212,.12)); margin-bottom: 20px;
}
.biz__card h3 { font-size: 23px; margin-bottom: 12px; }
.biz__card > p { color: var(--slate); margin-bottom: 18px; }
.biz__list { list-style: none; margin-bottom: 20px; }
.biz__list li { position: relative; padding-left: 22px; margin-bottom: 8px; color: var(--ink); font-size: 15px; }
.biz__list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 700; }
.link { color: var(--blue); font-weight: 600; font-size: 15px; transition: gap .2s; }
.link:hover { color: var(--cyan); }

/* ===== 服务优势 ===== */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px;
  transition: transform .3s, box-shadow .3s;
}
.feature:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.feature__icon {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; font-size: 28px;
  background: linear-gradient(135deg, rgba(29,78,216,.1), rgba(6,182,212,.1)); margin-bottom: 18px;
}
.feature h3 { font-size: 19px; margin-bottom: 8px; }
.feature p { color: var(--slate); font-size: 15px; }

/* ===== 数据实力 ===== */
.stats { padding: 90px 0; background: linear-gradient(135deg, #0b1f4d, #122a6b); color: #fff; position: relative; }
.stats::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px); background-size: 24px 24px;
}
.stats__grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat__num {
  font-size: clamp(34px, 4.5vw, 52px); font-weight: 800;
  background: linear-gradient(135deg, #67e8f9, #a5f3fc); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat__label { margin-top: 6px; color: rgba(255,255,255,.78); font-size: 15px; }

/* ===== 使用流程 ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.step {
  text-align: center; padding: 36px 24px; border-radius: var(--radius); background: #fff;
  border: 1px solid var(--line); position: relative;
}
.step__no {
  width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 50%; display: grid; place-items: center;
  font-size: 22px; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan));
}
.step h3 { font-size: 19px; margin-bottom: 8px; }
.step p { color: var(--slate); font-size: 15px; }

.tabs { display: flex; gap: 12px; justify-content: center; margin-bottom: 18px; }
.tab {
  padding: 10px 22px; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: 15px;
  background: #fff; border: 1px solid var(--line); color: var(--slate); transition: all .25s;
}
.tab.is-active { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; border-color: transparent; }
.tabpanel { display: none; }
.tabpanel.is-active { display: block; }
.flow {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 12px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center;
}
.flow span {
  background: var(--bg-alt); border: 1px solid var(--line); padding: 12px 18px; border-radius: 12px;
  font-size: 15px; font-weight: 600; color: var(--ink);
}
.flow i { color: var(--cyan); font-style: normal; font-weight: 800; }

/* ===== 司机加盟 ===== */
.join { padding: 96px 0; background: linear-gradient(135deg, #0b1f4d, #103a73); color: #fff; }
.join__inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.join__copy h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin: 14px 0 16px; }
.join__copy > p { color: rgba(255,255,255,.82); font-size: 16px; max-width: 520px; }
.join__list { list-style: none; margin: 24px 0 30px; }
.join__list li { padding: 8px 0; color: rgba(255,255,255,.92); font-size: 15px; }
.join__card {
  background: #fff; color: var(--ink); border-radius: 20px; padding: 34px; box-shadow: var(--shadow);
}
.join__card-title { font-size: 20px; font-weight: 800; margin-bottom: 20px; }
.join__form { display: flex; flex-direction: column; gap: 14px; }
.join__form input, .join__form select {
  padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px; font-size: 15px; font-family: inherit;
  background: var(--bg-alt); color: var(--ink); outline: none; transition: border .2s; width: 100%;
}
.join__form input:focus, .join__form select:focus { border-color: var(--blue); }

/* ===== 关于我们 ===== */
.about { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.about__copy p { color: var(--slate); margin: 16px 0; }
.about__mission { display: flex; gap: 18px; margin-top: 26px; flex-wrap: wrap; }
.about__mission div {
  flex: 1; min-width: 200px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px;
}
.about__mission strong { display: block; color: var(--blue); font-size: 14px; margin-bottom: 4px; }
.about__mission span { font-weight: 600; }
.about__visual { display: grid; place-items: center; }
.orbit {
  position: relative; width: 320px; height: 320px; border-radius: 50%;
  border: 2px dashed rgba(29,78,216,.25); display: grid; place-items: center; animation: spin 24s linear infinite;
}
.orbit__core {
  width: 120px; height: 120px; border-radius: 50%; display: grid; place-items: center; font-size: 28px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan)); box-shadow: var(--shadow); animation: spin 24s linear infinite reverse;
}
.orbit__tag {
  position: absolute; background: #fff; border: 1px solid var(--line); padding: 8px 14px; border-radius: 999px;
  font-weight: 600; font-size: 14px; box-shadow: var(--shadow-sm); animation: spin 24s linear infinite reverse;
}
.orbit__tag.t1 { top: -10px; left: 50%; transform: translateX(-50%); }
.orbit__tag.t2 { bottom: 40px; right: -16px; }
.orbit__tag.t3 { bottom: 40px; left: -16px; }
.orbit__tag.t4 { top: 40px; right: -10px; }
@keyframes spin { to { transform: rotate(360deg); } }
.orbit__tag.t1, .orbit__tag.t2, .orbit__tag.t3, .orbit__tag.t4 { animation: none; }

/* ===== 联系我们 ===== */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact__info { display: flex; flex-direction: column; gap: 16px; }
.citem { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.citem__icon { font-size: 24px; }
.citem strong { display: block; font-size: 16px; }
.citem p { color: var(--slate); font-size: 14px; }
.contact__form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 14px; }
.field input, .field textarea {
  width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px; font-size: 15px;
  font-family: inherit; background: var(--bg-alt); color: var(--ink); outline: none; transition: border .2s; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--blue); }

/* ===== 页脚 ===== */
.footer { background: var(--ink); color: rgba(255,255,255,.75); padding-top: 64px; }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 48px; }
.footer__brand p { margin-top: 14px; font-size: 14px; max-width: 320px; }
.brand--light .brand__name { color: #fff; }
.footer__col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer__col a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255,255,255,.7); transition: color .2s; }
.footer__col a:hover { color: var(--cyan); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; }
.footer__bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; color: rgba(255,255,255,.55); }

/* ===== 滚动揭示动画 ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__card { order: -1; }
  .biz, .about, .join__inner, .contact { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav__links {
    position: fixed; top: 64px; right: 16px; left: 16px; flex-direction: column; align-items: stretch;
    background: #fff; border-radius: 16px; padding: 18px; gap: 6px; box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .25s;
  }
  .nav__links.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav__links a { color: var(--slate) !important; padding: 10px 8px; }
  .nav__cta { color: var(--blue) !important; border-color: var(--blue) !important; text-align: center; }
  .nav__toggle { display: flex; }
  .features { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { padding: 130px 0 90px; }
  .hero__trust { gap: 24px; }
  .flow i { display: none; }
  .flow { flex-direction: column; }
}

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