/* ==========================================================
   景途启扬 · 口腔机构 GEO 获客站
   独立样式表（不依赖主站），移动优先断点：1440 / 1024 / 768 / 390 / 320
   ========================================================== */

:root{
  --navy:#071634; --navy-2:#0E2450; --navy-3:#16305F;
  --brand:#2E6BFF; --brand-2:#5B8CFF; --accent:#17D1A8; --accent-2:#57E8C4;
  --text:#0F1B33; --muted:#5C6B88; --line:#E3E8F2; --soft:#F5F7FC;
  --radius:14px; --radius-lg:20px;
  --shadow-sm:0 1px 3px rgba(16,35,74,.06);
  --shadow:0 10px 30px rgba(16,35,74,.08);
  --shadow-lg:0 24px 60px rgba(16,35,74,.14);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  color:var(--text);background:#fff;line-height:1.68;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

.wrap{width:min(1200px,calc(100% - 48px));margin:0 auto}
.wrap--narrow{width:min(880px,calc(100% - 48px))}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:200;background:#fff;padding:10px 16px;border-radius:10px;box-shadow:var(--shadow)}

/* ---------------- header ---------------- */
.header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 22px rgba(16,35,74,.06)}
.header .wrap{display:flex;align-items:center;gap:26px;height:74px}

.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo__mark{width:40px;height:40px;flex-shrink:0;display:block;object-fit:contain}
.logo__text{display:flex;flex-direction:column;line-height:1.2}
.logo__name{font-size:16.5px;font-weight:800;letter-spacing:-.02em}
.logo__tag{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.06em}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{padding:9px 14px;border-radius:9px;font-size:15px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav a:hover{color:var(--text);background:var(--soft)}

.header__cta{display:flex;align-items:center;gap:14px}
.header__tel{font-size:15px;font-weight:800;color:var(--navy);letter-spacing:-.01em}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .16s ease, box-shadow .2s ease, background .2s ease;white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn--accent{background:linear-gradient(120deg,var(--brand),#1B4FD8);color:#fff;box-shadow:0 8px 20px rgba(46,107,255,.28)}
.btn--accent:hover{box-shadow:0 12px 26px rgba(46,107,255,.36)}
.btn--ghost{background:#fff;color:var(--navy);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn--ghost:hover{border-color:#C9D4E8}
.btn--lg{padding:14px 26px;font-size:16px;border-radius:13px}
.btn--block{width:100%}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:11px;padding:0;position:relative}
.burger span{position:absolute;left:11px;width:20px;height:2px;background:var(--navy);border-radius:2px;transition:.22s}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:20px}
.burger span:nth-child(3){top:26px}
.burger.is-open span:nth-child(1){top:20px;transform:rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){top:20px;transform:rotate(-45deg)}

.drawer{display:none;flex-direction:column;gap:6px;padding:16px 0 24px;border-top:1px solid var(--line);background:#fff}
.drawer a{padding:12px 4px;font-size:16px;font-weight:600;color:var(--navy);border-bottom:1px solid var(--soft)}
.drawer .btn{margin-top:12px;border-bottom:none}
.drawer__tel{color:var(--brand) !important;font-weight:800}
.drawer.is-open{display:flex}

/* ---------------- hero ---------------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1100px 600px at 12% -10%, rgba(46,107,255,.13), transparent 62%),
  radial-gradient(900px 520px at 92% 8%, rgba(23,209,168,.12), transparent 66%),
  linear-gradient(180deg,#F7F9FE 0%,#FFFFFF 68%);}
.hero__grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(15,27,51,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(15,27,51,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(900px 520px at 50% 0%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(900px 520px at 50% 0%,#000 30%,transparent 78%);
}
.hero__wrap{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding:76px 0 84px}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:16px}
.hero h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18;letter-spacing:-.02em;font-weight:800;color:var(--navy)}
.hero__sub{margin-top:20px;font-size:16.5px;color:var(--muted);max-width:34em}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.hero__stats b{display:block;font-size:clamp(20px,2.4vw,28px);font-weight:800;color:var(--navy);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.hero__stats span{font-size:13px;color:var(--muted)}

.chatcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.chatcard__head{display:flex;align-items:center;gap:6px;padding:12px 16px;background:linear-gradient(180deg,#FBFCFE,#F4F7FC);border-bottom:1px solid var(--line)}
.dot{width:9px;height:9px;border-radius:50%;background:#D7DEEE}
.dot:first-child{background:#FF6B6B}.dot:nth-child(2){background:#FFC94D}.dot:nth-child(3){background:#37D39B}
.chatcard__title{margin-left:8px;font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.04em}
.chatcard__body{padding:20px}
.chatcard__body .q{background:var(--soft);border-radius:12px 12px 12px 4px;padding:12px 14px;font-size:14.5px;font-weight:700;color:var(--navy)}
.chatcard__body .a{margin-top:14px;font-size:14px;color:#33405C;display:grid;gap:9px}
.chatcard__body .a b{color:var(--brand)}
.chatcard__body .hint{font-size:12.5px;color:#93A0B8;font-style:normal}
.chatcard__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chatcard__tags span{font-size:12.5px;font-weight:700;color:var(--navy-3);background:rgba(46,107,255,.07);border:1px solid rgba(46,107,255,.18);padding:6px 11px;border-radius:8px}
.hero__note{margin-top:14px;text-align:center;font-size:13px;color:var(--muted)}

/* ---------------- 通用区块 ---------------- */
.section{padding:88px 0}
.section--soft{background:var(--soft)}
.section--dark{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 60%,#0A1B3D 100%);color:#fff}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center}
.section-title{font-size:clamp(24px,3vw,38px);line-height:1.24;font-weight:800;letter-spacing:-.02em;color:var(--navy)}
.section--dark .section-title{color:#fff}
.section-sub{margin-top:14px;font-size:16px;color:var(--muted)}
.section--dark .section-sub{color:rgba(255,255,255,.72)}

.grid{display:grid;gap:20px}
.grid--3{grid-template-columns:repeat(3,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;box-shadow:var(--shadow-sm);position:relative;transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card__n{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.12em;color:var(--brand);background:rgba(46,107,255,.08);padding:4px 10px;border-radius:7px;margin-bottom:14px}
.card h3{font-size:18.5px;font-weight:800;color:var(--navy);margin-bottom:10px}
.card p{font-size:14.8px;color:var(--muted)}
.card--feature .card__icon{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),#1B4FD8);margin-bottom:16px}

.callout{margin-top:32px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow-sm)}
.callout b{display:block;font-size:16.5px;color:var(--navy);margin-bottom:12px}
.callout ul{display:grid;gap:9px}
.callout li{font-size:15px;color:var(--muted);padding-left:22px;position:relative}
.callout li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--accent)}

.projects{margin-top:34px;text-align:center}
.projects__title{font-size:14px;font-weight:800;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tags span{font-size:14.5px;font-weight:700;color:var(--navy);background:#fff;border:1px solid var(--line);padding:9px 16px;border-radius:10px;box-shadow:var(--shadow-sm)}

/* ---------------- 流程 ---------------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 20px;box-shadow:var(--shadow-sm);position:relative}
.steps__n{display:block;font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--brand);margin-bottom:12px}
.steps h3{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:8px}
.steps p{font-size:14px;color:var(--muted)}

/* ---------------- 方案 ---------------- */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:start}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 22px;box-shadow:var(--shadow-sm);position:relative;display:flex;flex-direction:column;height:100%}
.plan--hot{border-color:rgba(46,107,255,.4);box-shadow:0 18px 44px rgba(46,107,255,.16)}
.plan__badge{position:absolute;top:-11px;left:22px;font-size:11.5px;font-weight:800;color:#fff;background:var(--brand);padding:4px 10px;border-radius:7px;letter-spacing:.04em}
.plan h3{font-size:17px;font-weight:800;color:var(--navy)}
.plan__price{margin:12px 0 18px;font-size:30px;font-weight:800;color:var(--brand);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.plan__price span{font-size:13px;font-weight:600;color:var(--muted);margin-left:3px}
.plan ul{display:grid;gap:10px;margin-bottom:22px}
.plan li{font-size:14px;color:var(--muted);padding-left:20px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:900}
.plan .btn{margin-top:auto}
.plans__note{margin-top:24px;text-align:center;font-size:13.5px;color:var(--muted)}

/* ---------------- 数据/信任 ---------------- */
.section--dark .eyebrow{color:var(--accent)}
.logos{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.logos span{padding:11px 20px;border-radius:11px;font-size:14.4px;font-weight:700;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);color:#fff}
.logos .logos__count{background:rgba(23,209,168,.14);border-color:rgba(23,209,168,.36);color:var(--accent-2)}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px;text-align:center}
.facts b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.facts span{font-size:13px;color:rgba(255,255,255,.6)}
.trust__note{margin-top:26px;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------------- FAQ ---------------- */
.faq{display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow-sm)}
.faq summary{font-size:16.5px;font-weight:700;color:var(--navy);cursor:pointer;list-style:none;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:-2px;font-size:22px;font-weight:700;color:var(--brand);transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:12px;font-size:15px;color:var(--muted)}

/* ---------------- 表单 ---------------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact__left h2{font-size:clamp(23px,2.6vw,32px);line-height:1.28;font-weight:800;color:var(--navy);letter-spacing:-.02em}
.contact__left > p{margin-top:16px;font-size:15.5px;color:var(--muted)}
.contact__list{display:grid;gap:12px;margin-top:28px}
.contact__list li{display:flex;gap:14px;font-size:15px;color:var(--text)}
.contact__list b{flex:0 0 52px;font-weight:800;color:var(--navy)}
.contact__list a{color:var(--brand);font-weight:700}

.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.form__row{margin-bottom:16px}
.form__row label{display:block;font-size:13.5px;font-weight:700;color:var(--navy);margin-bottom:7px}
.form__row--2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form input,.form select,.form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;
  color:var(--text);background:#fff;transition:border-color .18s, box-shadow .18s;font-family:inherit;
}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,107,255,.12)}
.form textarea{resize:vertical;min-height:88px}
.form__hint{margin-top:12px;font-size:12.5px;color:#93A0B8;text-align:center}
.form__hint a{color:var(--brand)}
.form__ok{display:none;margin-top:14px;padding:12px 16px;border-radius:10px;background:rgba(23,209,168,.1);border:1px solid rgba(23,209,168,.32);color:#0B7C63;font-size:14px;font-weight:700;text-align:center}
.form__ok.is-on{display:block}

/* ---------------- footer ---------------- */
.footer{background:var(--navy);color:rgba(255,255,255,.72);padding:62px 0 0;font-size:14.6px}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer__brand .logo{margin-bottom:16px}
.footer__brand .logo__name{color:#fff}
.footer__brand .logo__tag{color:rgba(255,255,255,.5)}
.footer__brand p{font-size:14px;line-height:1.85;max-width:330px;color:rgba(255,255,255,.6)}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer ul{display:grid;gap:10px}
.footer ul li{font-size:14.3px;color:rgba(255,255,255,.68)}
.footer__tel{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.01em;font-variant-numeric:tabular-nums;margin-bottom:10px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;font-size:13.4px;color:rgba(255,255,255,.55)}
.footer__bottom a{color:rgba(255,255,255,.55)}
.footer__bottom a:hover{color:var(--accent)}
.footer__bottom .sep{opacity:.35}

/* ---------------- 入场动画 ---------------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------------- 响应式 ---------------- */
@media (max-width:1024px){
  .hero__wrap{grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
  .hero__right{max-width:560px}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:repeat(2,1fr)}
  .contact{grid-template-columns:1fr;gap:36px}
  .footer__top{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:860px){
  .nav{display:none}
  .header__tel{display:none}
  .header .btn{display:none}
  .burger{display:block}
  .header .wrap{gap:14px;height:66px}
  .header__cta{margin-left:auto}
}
@media (max-width:720px){
  .wrap,.wrap--narrow{width:calc(100% - 32px)}
  .section{padding:62px 0}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:20px 14px}
  .section-head{margin-bottom:34px}
  .facts{grid-template-columns:repeat(2,1fr);gap:22px}
  .form__row--2{grid-template-columns:1fr}
  .card,.plan{padding:24px 20px}
}
@media (max-width:560px){
  .grid--3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr;gap:30px}
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{width:100%}
  .logo__tag{display:none}
}
@media (max-width:360px){
  .wrap,.wrap--narrow{width:calc(100% - 24px)}
  .form{padding:20px 16px}
  .logo__mark{width:34px;height:34px}
}