/* ============================================
   明察易驾 · 公司门户网站
   出行服务 · 暖橙 #FF6B35 + 深蓝 #1A1F36 + 浅米 #FAF7F2
   ============================================ */

:root {
  --c-orange: #FF6B35;
  --c-orange-soft: #FFE8DC;
  --c-orange-deep: #E14F1A;
  --c-navy: #1A1F36;
  --c-navy-soft: #2D3553;
  --c-cream: #FAF7F2;
  --c-cream-deep: #F2ECE0;
  --c-paper: #FFFFFF;
  --c-ink: #1A1F36;
  --c-ink-2: #4A4F62;
  --c-ink-3: #8B8FA1;
  --c-line: #E4DED2;

  --f-serif: "Noto Serif SC", "Source Han Serif", "Songti SC", serif;
  --f-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "DM Mono", "JetBrains Mono", monospace;

  --shadow-sm: 0 4px 14px rgba(26, 31, 54, 0.06);
  --shadow-md: 0 18px 40px -12px rgba(26, 31, 54, 0.18);
  --shadow-lg: 0 30px 70px -20px rgba(255, 107, 53, 0.25);

  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 36px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-ink);
  background: var(--c-cream);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
em { font-style: normal; color: var(--c-orange); }
b { font-weight: 700; color: var(--c-navy); }

/* ====== 背景装饰 ====== */
.bg-decor {
  position: fixed; inset: 0; z-index: -1;
  pointer-events: none;
}
.bg-roads { width: 100%; height: 100%; opacity: 0.55; }

/* ====== 导航 ====== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(250, 247, 242, 0.78);
  border-bottom: 1px solid rgba(228, 222, 210, 0.6);
  transition: box-shadow .3s, background .3s;
}
.nav.is-scrolled {
  background: rgba(250, 247, 242, 0.92);
  box-shadow: 0 8px 28px -12px rgba(26,31,54,0.15);
}
.nav__inner {
  max-width: 1280px; margin: 0 auto;
  padding: 18px 40px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand__mark { display: inline-flex; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--c-navy);
}
.brand__corp {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-ink-3);
  margin-top: 2px;
}
.nav__menu { display: flex; gap: 36px; }
.nav__menu a {
  font-size: 14px; font-weight: 500;
  color: var(--c-ink-2);
  position: relative;
  transition: color .25s;
}
.nav__menu a::after {
  content: ""; position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--c-orange);
  transition: width .3s ease;
}
.nav__menu a:hover { color: var(--c-orange); }
.nav__menu a:hover::after { width: 100%; }

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 92vh;
  padding: 100px 40px 80px;
  overflow: hidden;
  display: flex; align-items: center;
}
.hero__bg {
  position: absolute; inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 80% 20%, rgba(255,107,53,0.10), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(26,31,54,0.06), transparent 70%);
}
.hero__sun {
  position: absolute;
  right: -120px; top: 20%;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,0.18), transparent 65%);
  filter: blur(8px);
  animation: floaty 9s ease-in-out infinite;
}
@keyframes floaty {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}
.hero__roads {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.lane {
  position: absolute;
  left: -10%; right: -10%;
  height: 1px;
  background: repeating-linear-gradient(
    to right,
    var(--c-orange) 0 14px,
    transparent 14px 32px
  );
  opacity: 0.45;
}
.lane--1 { top: 32%; transform: rotate(-3deg); animation: pan 12s linear infinite; }
.lane--2 { top: 58%; transform: rotate(-3deg); opacity: 0.25; animation: pan 18s linear infinite reverse; }
.lane--3 { top: 75%; transform: rotate(-3deg); opacity: 0.18; animation: pan 22s linear infinite; }
@keyframes pan {
  from { background-position: 0 0; }
  to   { background-position: 600px 0; }
}

.hero__inner {
  position: relative; z-index: 2;
  max-width: 1280px; margin: 0 auto;
  width: 100%;
}
.hero__tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-ink-2);
  box-shadow: var(--shadow-sm);
  animation: fadeUp .8s ease both;
}
.hero__tag .dot {
  width: 8px; height: 8px;
  border-radius: 50%; background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255,107,53,0.18);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255,107,53,0.18); }
  50%      { box-shadow: 0 0 0 10px rgba(255,107,53,0); }
}

.hero__title {
  margin-top: 36px;
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: clamp(48px, 8.4vw, 132px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--c-navy);
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line span,
.hero__title .line {
  animation: fadeUp 1s cubic-bezier(.2,.7,.2,1) both;
}
.hero__title .line-1 { animation-delay: .15s; }
.hero__title .line-2 { animation-delay: .35s; }
.hero__title em {
  font-style: italic;
  color: var(--c-orange);
  background: linear-gradient(180deg, transparent 60%, rgba(255,107,53,0.18) 60%);
  padding: 0 8px;
}

.hero__sub {
  margin-top: 32px;
  max-width: 620px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--c-ink-2);
  animation: fadeUp 1s ease .55s both;
}

.hero__meta {
  margin-top: 48px;
  display: flex; gap: 56px; flex-wrap: wrap;
  animation: fadeUp 1s ease .75s both;
}
.meta { display: flex; flex-direction: column; gap: 4px; }
.meta__num {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: 56px;
  line-height: 1;
  color: var(--c-navy);
  letter-spacing: -0.02em;
}
.meta__label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-ink-3);
  text-transform: uppercase;
}

.hero__cta {
  margin-top: 56px;
  display: inline-flex; align-items: center; gap: 12px;
  padding: 18px 32px;
  background: var(--c-navy);
  color: var(--c-cream);
  border-radius: 999px;
  font-size: 14px; letter-spacing: 0.1em;
  box-shadow: var(--shadow-md);
  transition: all .3s;
  animation: fadeUp 1s ease .9s both;
}
.hero__cta:hover {
  background: var(--c-orange);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.hero__cta svg { animation: bob 1.6s ease-in-out infinite; }
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ====== 通用 Section ====== */
.section {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 140px 40px;
}
.section__head { margin-bottom: 64px; max-width: 760px; }
.section__head--center { margin: 0 auto 72px; text-align: center; }
.section__head--alt { margin-left: auto; text-align: right; max-width: 760px; }
.section__eyebrow {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-orange);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.section__title {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--c-navy);
}
.section__desc {
  margin-top: 20px;
  font-size: 17px;
  color: var(--c-ink-2);
  line-height: 1.8;
}

/* ====== ABOUT ====== */
.about__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 72px;
  align-items: start;
}
.about__copy p {
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--c-ink-2);
  margin-bottom: 22px;
}
.about__points {
  margin-top: 36px;
  list-style: none;
  border-top: 1px solid var(--c-line);
}
.about__points li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
  transition: padding-left .3s;
}
.about__points li:hover { padding-left: 12px; }
.about__points li:hover span { color: var(--c-orange); }
.about__points span {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 18px;
  color: var(--c-ink-3);
  transition: color .3s;
}
.about__points p {
  font-size: 15.5px;
  color: var(--c-navy);
  font-weight: 500;
}

.about__card {
  position: sticky; top: 110px;
  background: var(--c-paper);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-line);
  overflow: hidden;
}
.card__top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px;
}
.card__route {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-ink-2);
}
.card__pin {
  font-family: var(--f-mono);
  font-size: 11px; font-weight: 500;
  padding: 4px 10px;
  background: var(--c-orange);
  color: var(--c-paper);
  border-radius: 6px;
  letter-spacing: 0.15em;
}
.card__map {
  background: var(--c-cream);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
}
.card__kv { display: grid; gap: 16px; }
.card__kv > div {
  display: grid; grid-template-columns: 100px 1fr; gap: 16px;
  padding: 12px 0;
  border-top: 1px dashed var(--c-line);
}
.card__kv dt {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-ink-3);
  text-transform: uppercase;
}
.card__kv dd {
  font-size: 14px;
  color: var(--c-navy);
  font-weight: 500;
}

/* ====== PRODUCT ====== */
.product {
  background: linear-gradient(180deg, var(--c-cream) 0%, var(--c-cream-deep) 100%);
  max-width: none;
  padding: 140px 40px;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.product__hero {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}
.product__brand .badge {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-orange);
  border: 1px solid var(--c-orange);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 28px;
}
.product__name {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: clamp(80px, 14vw, 200px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--c-navy);
}
.product__name .amp {
  display: inline-block;
  color: var(--c-orange);
  transform: translateY(-12px);
  font-size: 0.6em;
  margin: 0 4px;
}
.product__slogan {
  margin-top: 24px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--c-ink-2);
  text-transform: uppercase;
}
.product__plate { position: relative; }
.plate {
  background: var(--c-navy);
  color: #FFD23F;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 36px;
  letter-spacing: 0.08em;
  padding: 22px 32px;
  border-radius: 12px;
  border: 3px solid #FFD23F;
  display: flex; align-items: center; gap: 16px;
  box-shadow: var(--shadow-md);
  transform: rotate(-3deg);
  transition: transform .4s;
}
.plate:hover { transform: rotate(0deg) scale(1.04); }
.plate__zone { font-size: 28px; }
.plate__shadow {
  position: absolute; left: 12px; right: 12px; bottom: -10px;
  height: 12px;
  background: rgba(26,31,54,0.15);
  filter: blur(8px);
  border-radius: 50%;
}

.product__intro {
  max-width: 980px; margin: 0 auto 60px;
  font-size: 17px;
  line-height: 1.95;
  color: var(--c-ink-2);
  text-align: center;
}

.product__features {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feat {
  background: var(--c-paper);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  transition: all .35s;
  position: relative;
  overflow: hidden;
}
.feat::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-orange) 0%, var(--c-orange-deep) 100%);
  transform: translateY(100%);
  transition: transform .4s ease;
  z-index: 0;
}
.feat:hover { transform: translateY(-8px); border-color: transparent; box-shadow: var(--shadow-lg); }
.feat:hover::before { transform: translateY(0); }
.feat:hover .feat__no,
.feat:hover h3,
.feat:hover p { color: var(--c-paper); }
.feat__no, .feat h3, .feat p { position: relative; z-index: 1; transition: color .4s; }
.feat__no {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-orange);
  margin-bottom: 18px;
  display: inline-block;
}
.feat h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 24px;
  color: var(--c-navy);
  margin-bottom: 12px;
}
.feat p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ink-2);
}

/* ====== SERVICE ====== */
.service__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-navy);
  border-left: 1px solid var(--c-navy);
}
.serv {
  padding: 44px 36px;
  border-right: 1px solid var(--c-navy);
  border-bottom: 1px solid var(--c-navy);
  background: var(--c-cream);
  transition: background .35s;
  position: relative;
  overflow: hidden;
}
.serv::after {
  content: "";
  position: absolute;
  right: 24px; top: 24px;
  width: 12px; height: 12px;
  border-top: 2px solid var(--c-navy);
  border-right: 2px solid var(--c-navy);
  transform: rotate(45deg);
  opacity: 0;
  transition: all .35s;
}
.serv:hover {
  background: var(--c-navy);
}
.serv:hover h3, .serv:hover p { color: var(--c-cream); }
.serv:hover .serv__icon svg { stroke: var(--c-orange); }
.serv:hover::after { opacity: 1; transform: rotate(45deg) translate(4px, -4px); border-color: var(--c-orange); }
.serv__icon {
  width: 64px; height: 64px;
  background: var(--c-paper);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .35s;
}
.serv:hover .serv__icon { transform: rotate(-8deg); }
.serv h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 24px;
  color: var(--c-navy);
  margin-bottom: 12px;
  transition: color .35s;
}
.serv p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-ink-2);
  transition: color .35s;
}

/* ====== ADVANTAGE ====== */
.advantage {
  background: var(--c-navy);
  max-width: none;
  margin-top: 0;
  padding: 160px 40px;
  color: var(--c-cream);
  position: relative;
  overflow: hidden;
}
.advantage .section__title { color: var(--c-cream); }
.advantage .section__title em { color: var(--c-orange); }
.advantage .section__desc { color: rgba(250,247,242,0.65); }
.advantage__bg { position: absolute; inset: 0; pointer-events: none; }
.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,107,53,0.2);
}
.ring--1 { width: 800px; height: 800px; left: -200px; top: -200px; border-color: rgba(255,107,53,0.12); animation: spin 60s linear infinite; }
.ring--2 { width: 600px; height: 600px; right: -150px; bottom: -150px; border-color: rgba(250,247,242,0.06); animation: spin 80s linear infinite reverse; }
.ring--3 { width: 1000px; height: 1000px; left: 50%; top: 50%; transform: translate(-50%, -50%); border-style: dashed; border-color: rgba(255,107,53,0.08); }
@keyframes spin { to { transform: rotate(360deg); } }

.advantage__grid {
  position: relative; z-index: 1;
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.adv {
  padding: 48px;
  border: 1px solid rgba(250,247,242,0.12);
  border-radius: var(--radius-md);
  background: rgba(250,247,242,0.02);
  transition: all .4s;
  position: relative;
}
.adv:hover {
  background: rgba(255,107,53,0.05);
  border-color: var(--c-orange);
  transform: translateY(-6px);
}
.adv--accent {
  background: var(--c-orange);
  border-color: var(--c-orange);
}
.adv--accent:hover { background: var(--c-orange-deep); border-color: var(--c-orange-deep); }
.adv__num {
  font-family: var(--f-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
  display: block; margin-bottom: 24px;
}
.adv--accent .adv__num { color: var(--c-navy); }
.adv h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 30px;
  color: var(--c-cream);
  margin-bottom: 16px;
}
.adv--accent h3 { color: var(--c-navy); }
.adv p {
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(250,247,242,0.7);
}
.adv--accent p { color: rgba(26,31,54,0.85); }

/* ====== CONTACT ====== */
.contact {
  padding: 160px 40px;
}
.contact__inner {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.contact__sub {
  margin-top: 28px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--c-ink-2);
  max-width: 460px;
}
.contact__list {
  list-style: none;
  display: grid;
  gap: 4px;
}
.contact__list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 24px 28px;
  background: var(--c-paper);
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-line);
  align-items: center;
  transition: all .3s;
}
.contact__list li:hover {
  border-color: var(--c-orange);
  transform: translateX(8px);
  box-shadow: var(--shadow-sm);
}
.kbd {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--c-ink-3);
  text-transform: uppercase;
}
.contact__list p {
  font-size: 16px;
  font-weight: 500;
  color: var(--c-navy);
}

/* ====== FOOTER ====== */
.footer {
  background: var(--c-navy);
  color: var(--c-cream);
  padding: 80px 40px 40px;
}
.footer__top {
  max-width: 1280px; margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(250,247,242,0.12);
}
.brand__name--lg {
  font-size: 36px;
  color: var(--c-cream);
}
.footer__tagline {
  margin-top: 12px;
  font-size: 14px;
  color: rgba(250,247,242,0.5);
  letter-spacing: 0.05em;
}
.footer__nav { display: flex; gap: 32px; flex-wrap: wrap; }
.footer__nav a {
  font-size: 14px;
  color: rgba(250,247,242,0.65);
  transition: color .25s;
}
.footer__nav a:hover { color: var(--c-orange); }
.footer__bottom {
  max-width: 1280px; margin: 32px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer__copy {
  font-size: 13px;
  color: rgba(250,247,242,0.55);
  letter-spacing: 0.05em;
}
.footer__icp {
  font-family: var(--f-mono);
  font-size: 12px;
  color: rgba(250,247,242,0.5);
  letter-spacing: 0.08em;
}
.footer__icp a { color: rgba(250,247,242,0.7); transition: color .25s; }
.footer__icp a:hover { color: var(--c-orange); }
.footer__icp .sep { margin: 0 10px; opacity: 0.5; }

/* ====== 滚动浮现动画 ====== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .nav__inner { padding: 16px 24px; }
  .nav__menu { gap: 22px; }
  .section { padding: 100px 24px; }
  .product { padding: 100px 24px; }
  .advantage { padding: 120px 24px; }
  .contact { padding: 120px 24px; }
  .about__grid { grid-template-columns: 1fr; gap: 48px; }
  .about__card { position: static; }
  .product__hero { grid-template-columns: 1fr; gap: 32px; }
  .product__features { grid-template-columns: repeat(2, 1fr); }
  .service__list { grid-template-columns: repeat(2, 1fr); }
  .advantage__grid { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  .nav__menu { display: none; }
  .brand__corp { display: none; }
  .hero { padding: 60px 24px 60px; min-height: auto; }
  .hero__meta { gap: 32px; }
  .meta__num { font-size: 42px; }
  .product__features { grid-template-columns: 1fr; }
  .service__list { grid-template-columns: 1fr; }
  .section__head--alt { text-align: left; }
  .footer__top { flex-direction: column; }
  .contact__list li { grid-template-columns: 1fr; gap: 6px; padding: 20px; }
}