/* 机动车报废服务平台 · 共享设计系统
   主题变量由各站页面内联注入：--brand / --brand2 / --accent / --hero-from / --hero-to */
:root{
  --brand:#0b3d91; --brand2:#0f5fc4; --accent:#16a34a;
  --hero-from:#082b63; --hero-to:#1257a8;
  --ink:#17212f; --ink-2:#42526a; --ink-3:#6b7a90;
  --line:#e3e9f1; --bg:#ffffff; --bg-soft:#f5f8fc; --bg-soft2:#eef3f9;
  --radius:16px; --radius-s:10px; --shadow:0 8px 28px rgba(19,42,76,.09);
  --shadow-lg:0 18px 48px rgba(19,42,76,.16);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.78;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(28px,4.3vw,46px)}
h2{font-size:clamp(23px,3vw,34px)}
h3{font-size:clamp(18px,2vw,21px)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.3em}
li{margin:.35em 0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.section--soft2{background:var(--bg-soft2)}
.sec-head{max-width:820px;margin:0 auto 42px;text-align:center}
.sec-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);
  background:color-mix(in srgb,var(--accent) 10%,#fff);padding:6px 14px;border-radius:100px;margin-bottom:14px}
.sec-head p{color:var(--ink-2);font-size:16px;margin:0}
.sec-head h2{margin-bottom:14px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand__mark{width:42px;height:42px;flex:none;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  display:grid;place-items:center;font-size:21px;font-weight:800;box-shadow:var(--shadow)}
.brand__txt{min-width:0}
.brand__name{font-weight:800;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3}
.brand__sub{font-size:11px;color:var(--ink-3);letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{padding:9px 13px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.nav a:hover,.nav a[aria-current="page"]{color:var(--brand);background:color-mix(in srgb,var(--brand) 8%,#fff)}
.header-cta{display:flex;align-items:center;gap:8px;background:var(--accent);color:#fff!important;
  padding:10px 16px;border-radius:100px;font-weight:700;font-size:14px;white-space:nowrap;box-shadow:0 6px 16px color-mix(in srgb,var(--accent) 30%,transparent)}
.header-cta:hover{filter:brightness(1.06)}
.menu-btn{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  border-radius:10px;background:#fff;color:var(--brand);font-size:22px;cursor:pointer;line-height:1}
@media(max-width:980px){
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:10px 20px 18px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg)}
  .nav.is-open{display:flex}
  .nav a{padding:12px 10px;border-bottom:1px solid var(--line);font-size:15.5px}
  .header-cta{display:none}
  .menu-btn{display:block}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(125deg,var(--hero-from),var(--hero-to))}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 380px at 88% 12%,rgba(255,255,255,.14),transparent 65%)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;
  align-items:center;padding:72px 20px 78px}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.1em;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  padding:7px 15px;border-radius:100px;margin-bottom:20px}
.hero h1{color:#fff;margin-bottom:18px;text-shadow:0 2px 12px rgba(0,0,0,.12)}
.hero .lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.9);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 24px;
  border-radius:100px;font-weight:800;font-size:15.5px;border:2px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn--call{background:#fff;color:var(--brand);box-shadow:0 10px 26px rgba(0,0,0,.16)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--ghost:hover{background:rgba(255,255,255,.1)}
.btn--brand{background:var(--brand);color:#fff}
.btn--accent{background:var(--accent);color:#fff}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:rgba(255,255,255,.86)}
.trust-row span{display:inline-flex;align-items:center;gap:7px}
.trust-row i{font-style:normal;width:20px;height:20px;border-radius:50%;background:rgba(255,255,255,.2);
  display:grid;place-items:center;font-size:12px}
.hero-card{background:rgba(255,255,255,.97);color:var(--ink);border-radius:20px;padding:28px;
  box-shadow:var(--shadow-lg)}
.hero-card h3{font-size:18px;margin-bottom:6px}
.hero-card .sub{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.hero-card ul{list-style:none;padding:0;margin:0 0 20px}
.hero-card li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.hero-card li:last-child{border-bottom:0}
.hero-card li b{color:var(--accent);font-size:17px;line-height:1.4}
.tel-big{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--accent);
  color:#fff;border-radius:12px;padding:14px;font-size:22px;font-weight:800;letter-spacing:.03em}
.tel-note{font-size:12px;color:var(--ink-3);text-align:center;margin:10px 0 0}
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 20px 54px}
  .hero .lead{font-size:16px}
  .hero-card{padding:22px}
}
@media(max-width:520px){
  .hero-inner{padding:36px 20px 42px;gap:26px}
  .hero-actions .btn{flex:1 1 100%}
  .tel-big{font-size:20px}
}

/* ---------- carousel ---------- */
.carousel{background:linear-gradient(90deg,#f8fafc,#eef3f7 55%,#f8fafc);border-bottom:1px solid var(--line)}
.carousel__inner{position:relative;padding:10px 12px 12px}
.carousel__track{position:relative;height:clamp(112px,18vw,236px);overflow:hidden;border-radius:12px}
.carousel__slide{position:absolute;inset:0;opacity:0;transition:opacity .75s ease;
  display:flex;align-items:center;justify-content:center;background:#fff}
.carousel__slide.is-active{opacity:1}
.carousel__slide img{width:100%;height:100%;object-fit:contain}
.carousel__dots{display:flex;justify-content:center;gap:8px;margin-top:10px}
.carousel__dots button{width:9px;height:9px;border:0;border-radius:50%;background:#c9d4e2;cursor:pointer;padding:0;transition:.2s}
.carousel__dots button.is-active{width:26px;border-radius:6px;background:var(--brand)}
.carousel__arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:36px;height:36px;
  border:0;border-radius:50%;background:rgba(255,255,255,.9);color:var(--brand);font-size:20px;
  cursor:pointer;box-shadow:var(--shadow)}
.carousel__arrow--prev{left:8px}.carousel__arrow--next{right:8px}
@media(max-width:600px){.carousel__arrow{display:none}}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:22px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid--4{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card__icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:25px;
  background:color-mix(in srgb,var(--brand) 10%,#fff);color:var(--brand);margin-bottom:16px}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15px;margin-bottom:14px}
.card ul{list-style:none;padding:0;margin:0;font-size:14px;color:var(--ink-2)}
.card li{padding:5px 0 5px 20px;position:relative}
.card li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:50%;
  background:var(--accent)}
.tag{display:inline-block;font-size:12px;font-weight:700;color:var(--brand);
  background:color-mix(in srgb,var(--brand) 8%,#fff);border:1px solid color-mix(in srgb,var(--brand) 18%,#fff);
  padding:4px 11px;border-radius:100px;margin:0 6px 6px 0}
.badge-focus{display:inline-block;font-size:12px;font-weight:800;color:#fff;background:var(--accent);
  padding:3px 10px;border-radius:100px;margin-left:8px;vertical-align:middle}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
@media(max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px}
.step__num{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-2);margin:0}

/* ---------- areas ---------- */
.area-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px}
.area-block h3{display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:6px}
.area-block h3::before{content:"";width:5px;height:20px;border-radius:4px;background:var(--accent)}
.area-meta{font-size:13.5px;color:var(--ink-3);margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13.5px;color:var(--ink-2);background:var(--bg-soft2);border:1px solid var(--line);
  border-radius:8px;padding:5px 11px}
.landmarks{margin-top:14px;font-size:13.5px;color:var(--ink-3)}
.landmarks b{color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:18px 52px 18px 22px;font-weight:700;font-size:16px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;background:var(--bg-soft2);color:var(--brand);
  display:grid;place-items:center;font-size:18px;font-weight:600}
.faq details[open] summary{color:var(--brand);background:color-mix(in srgb,var(--brand) 4%,#fff)}
.faq details[open] summary::after{content:"−";background:var(--brand);color:#fff}
.faq .ans{padding:0 22px 20px;color:var(--ink-2);font-size:15px;border-top:1px dashed var(--line);padding-top:16px}

/* ---------- law / note ---------- */
.law-list{display:grid;gap:16px}
.law-item{background:#fff;border-left:4px solid var(--accent);border-radius:0 12px 12px 0;
  padding:20px 24px;box-shadow:var(--shadow)}
.law-item h3{font-size:17px;margin-bottom:4px}
.law-item .no{font-size:13px;color:var(--ink-3);margin-bottom:10px}
.law-item p{font-size:14.5px;color:var(--ink-2);margin:0}
.note{background:#fff8ed;border:1px solid #f2dfba;border-radius:12px;padding:18px 22px;
  color:#7a561c;font-size:14px;line-height:1.8}
.note b{color:#5c3f11}
.fact-table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow);font-size:14.5px}
.fact-table th,.fact-table td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.fact-table th{background:var(--bg-soft2);color:var(--brand);font-weight:700;width:190px;white-space:nowrap}
.fact-table tr:last-child th,.fact-table tr:last-child td{border-bottom:0}
@media(max-width:620px){.fact-table th{width:auto;white-space:normal}.fact-table th,.fact-table td{padding:11px 12px}}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--hero-from),var(--hero-to));color:#fff;padding:52px 0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15px}
.cta-band .btn--call{font-size:17px;padding:16px 30px}
.cta-band .tel{font-size:13px;color:rgba(255,255,255,.8);margin-top:8px;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#101c2e;color:#c3cede;padding:56px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;margin-bottom:34px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;gap:24px}}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer a{color:#c3cede}.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:7px 0}
.footer-tel{font-size:26px;font-weight:800;color:#fff;letter-spacing:.03em;display:inline-block;margin-bottom:6px}
.footer-legal{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:12.5px;color:#8fa0b8;line-height:1.85}
.footer-legal strong{color:#c3cede}

/* ---------- crumbs / page hero ---------- */
.page-hero{background:linear-gradient(120deg,var(--hero-from),var(--hero-to));color:#fff;padding:46px 0 42px}
.page-hero h1{color:#fff;font-size:clamp(25px,3.4vw,36px);margin-bottom:10px}
.page-hero p{color:rgba(255,255,255,.88);margin:0;max-width:820px;font-size:15.5px}
.crumbs{font-size:13px;color:var(--ink-3);padding:14px 20px 0}
.crumbs a:hover{color:var(--brand);text-decoration:underline}
.crumbs span{margin:0 7px;color:#b6c2d2}

/* ---------- floating call (mobile-first) ---------- */
.side-call{position:fixed;right:0;top:46%;transform:translateY(-50%);z-index:75;
  display:flex;flex-direction:column;align-items:center;gap:7px;
  background:var(--accent);color:#fff;padding:14px 9px;border-radius:14px 0 0 14px;
  box-shadow:-4px 6px 20px rgba(0,0,0,.22);font-weight:800;font-size:13px;letter-spacing:2px}
.side-call__icon{font-size:21px;line-height:1;animation:ring 2.2s infinite}
.side-call__text{writing-mode:vertical-rl;letter-spacing:3px}
@keyframes ring{0%,70%,100%{transform:rotate(0)}76%{transform:rotate(14deg)}82%{transform:rotate(-14deg)}88%{transform:rotate(8deg)}}
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:78;background:#fff;
  box-shadow:0 -6px 24px rgba(15,35,70,.14);border-top:1px solid var(--line);
  padding:9px 12px calc(9px + env(safe-area-inset-bottom));gap:10px}
.mobile-bar a{flex:1;display:flex;align-items:center;justify-content:center;gap:7px;
  padding:12px 8px;border-radius:12px;font-weight:800;font-size:15px;color:#fff;background:var(--accent)}
.mobile-bar a.alt{background:var(--brand)}
.to-top{position:fixed;right:16px;bottom:18px;z-index:60;width:42px;height:42px;border:0;border-radius:50%;
  background:var(--brand);color:#fff;font-size:19px;cursor:pointer;box-shadow:var(--shadow);
  opacity:0;pointer-events:none;transition:opacity .25s}
.to-top.is-on{opacity:1;pointer-events:auto}
@media(max-width:768px){
  .mobile-bar{display:flex}
  .side-call{top:auto;bottom:calc(88px + env(safe-area-inset-bottom));transform:none;padding:11px 8px;font-size:12px}
  .to-top{bottom:calc(88px + env(safe-area-inset-bottom))}
  body{padding-bottom:calc(70px + env(safe-area-inset-bottom))}
  .section{padding:48px 0}
  .header-inner{height:62px}
  .nav{top:62px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 扩展页：GEO 长尾 / 主题知识 / 长文 / 内链网络 ---------- */
.prose{max-width:880px;margin:0 auto;font-size:15.5px;line-height:1.95;color:var(--ink-2)}
.prose h2{font-size:22px;color:var(--ink);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--accent)}
.prose h3{font-size:18px;color:var(--ink);margin:26px 0 10px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.4em}
.prose li{margin:.5em 0}
.prose strong{color:var(--ink)}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:22px 0}
.kv div{background:var(--bg-soft2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:14px}
.kv b{display:block;color:var(--brand);font-size:13px;margin-bottom:4px}
.callout{background:color-mix(in srgb,var(--brand) 5%,#fff);border:1px solid color-mix(in srgb,var(--brand) 18%,#fff);
  border-radius:12px;padding:18px 22px;font-size:14.5px;color:var(--ink-2);margin:22px 0}
.callout b{color:var(--brand)}
.related{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;margin:34px auto 0;max-width:880px;box-shadow:var(--shadow)}
.related h3{font-size:17px;margin-bottom:6px}
.related .sub{font-size:13px;color:var(--ink-3);margin-bottom:16px}
.related .links{display:flex;flex-wrap:wrap;gap:9px}
.related a{font-size:13.5px;color:var(--brand);background:var(--bg-soft2);border:1px solid var(--line);
  border-radius:8px;padding:7px 12px;transition:.18s}
.related a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;
  box-shadow:var(--shadow);max-width:880px;margin:0 auto}
.article-body{font-size:15.5px;line-height:1.95;color:var(--ink-2);overflow-wrap:anywhere}
.article-body a{color:var(--brand);font-weight:700}
.article-body section,.article-body p{margin:0 0 16px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--ink-3);
  border-bottom:1px dashed var(--line);padding-bottom:14px;margin-bottom:22px}
.article-meta span{background:var(--bg-soft2);border-radius:100px;padding:4px 12px}
.topic-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin:22px 0}
.topic-list a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  font-weight:700;color:var(--brand);font-size:14.5px;transition:.18s}
.topic-list a:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--brand)}
.topic-list a small{display:block;font-weight:400;color:var(--ink-3);margin-top:6px;font-size:12.5px}
.countbar{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;background:#fff;
  border:1px solid var(--line);border-radius:14px;padding:18px;margin:0 auto 32px;max-width:880px;font-size:14px;color:var(--ink-2)}
.countbar b{color:var(--brand);font-size:18px}
@media(max-width:620px){
  .article{padding:18px}.prose{font-size:15px}.related{padding:18px}
  .countbar{gap:8px 16px;font-size:13px}
}