/* ============================================================
   LAYOUT · 骨架 / 网格 / 区块布局
   碳效丰笙 · 丰笙日记官网
   由 style.css 拆分而来，内容与原单文件一致
   ============================================================ */

/* ---------- HERO ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:140px 0 120px;overflow:hidden;
  background:
    radial-gradient(ellipse 90% 70% at 78% 18%,rgba(27,171,155,.30),transparent 62%),
    radial-gradient(ellipse 70% 60% at 12% 82%,rgba(28,170,255,.20),transparent 60%),
    linear-gradient(155deg,#0b2a26 0%,#08211f 42%,#061a19 100%);
}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden;}
.hero-glow{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;}
.hero-glow-1{
  width:520px;height:520px;top:-120px;right:-80px;
  background:radial-gradient(circle,rgba(27,171,155,.55),transparent 68%);
  animation:float1 14s ease-in-out infinite;
}
.hero-glow-2{
  width:400px;height:400px;bottom:-140px;left:-60px;
  background:radial-gradient(circle,rgba(28,170,255,.42),transparent 68%);
  animation:float2 17s ease-in-out infinite;
}
.hero-glow-3{
  width:320px;height:320px;top:42%;left:46%;
  background:radial-gradient(circle,rgba(255,171,0,.22),transparent 68%);
  animation:float1 21s ease-in-out infinite reverse;
}
@keyframes float1{0%,100%{transform:translate(0,0);}50%{transform:translate(-40px,34px);}}
@keyframes float2{0%,100%{transform:translate(0,0);}50%{transform:translate(46px,-30px);}}
.hero-grid{
  position:absolute;inset:0;opacity:.14;
  background-image:
    linear-gradient(rgba(120,220,205,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,220,205,.35) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 70% 40%,#000,transparent);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 70% 40%,#000,transparent);
}
.hero-motif{
  position:absolute;right:-40px;top:50%;transform:translateY(-50%);
  width:min(46vw,520px);height:auto;opacity:.9;
  animation:spinSlow 60s linear infinite;
}
@keyframes spinSlow{to{transform:translateY(-50%) rotate(360deg);}}
.hero-inner{position:relative;z-index:2;color:#fff;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 18px;border-radius:999px;font-size:13.5px;font-weight:500;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(6px);color:rgba(255,255,255,.92);
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--teal-light);
  box-shadow:0 0 0 4px rgba(181,232,224,.22);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(181,232,224,.22);}50%{box-shadow:0 0 0 8px rgba(181,232,224,.06);}}
.hero-title{
  margin:26px 0 22px;font-size:clamp(30px,4.6vw,58px);line-height:1.24;
  font-weight:800;letter-spacing:-.5px;
}
.hero-title .hl{
  background:linear-gradient(100deg,var(--teal-light),#8fe3d6);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-desc{max-width:640px;font-size:clamp(15px,1.35vw,18px);color:rgba(255,255,255,.82);line-height:1.9;}
.hero-desc strong{color:var(--teal-light);font-weight:600;}
.hero-cta{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap;}
.hero .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;}
.hero .btn-ghost:hover{background:rgba(255,255,255,.13);}
.hero-scroll{
  position:absolute;left:50%;bottom:28px;transform:translateX(-50%);z-index:2;
  width:24px;height:42px;border:2px solid rgba(255,255,255,.35);border-radius:14px;
  display:flex;justify-content:center;padding-top:8px;
}
.scroll-line{width:2px;height:9px;background:var(--teal-light);border-radius:2px;animation:sd 1.8s infinite;}
@keyframes sd{0%{opacity:0;transform:translateY(-4px);}40%{opacity:1;}100%{opacity:0;transform:translateY(14px);}}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;position:relative;}
.section-tint{background:var(--bg-tint);}
.section-dark{background:var(--dark);color:#fff;position:relative;overflow:hidden;}
.section-dark::before{
  content:"";position:absolute;inset:0;opacity:.14;
  background-image:radial-gradient(circle at 18% 22%,rgba(27,171,155,.55),transparent 46%),
                   radial-gradient(circle at 82% 78%,rgba(28,170,255,.40),transparent 48%);
}
.section-dark > .container{position:relative;z-index:1;}

.sec-head{max-width:820px;margin-bottom:56px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.24em;font-weight:700;
  color:var(--teal);margin-bottom:14px;
}
.sec-head-light .eyebrow{color:var(--teal-light);}
.sec-title{font-size:clamp(24px,3.1vw,38px);font-weight:800;letter-spacing:-.4px;line-height:1.3;}
.sec-lead{margin-top:18px;font-size:16.5px;color:var(--muted);line-height:1.9;}
.sec-head-light .sec-lead{color:rgba(255,255,255,.72);}

/* ---------- 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center;}
.about-media{position:relative;}
.about-visual{
  position:relative;border-radius:22px;overflow:hidden;
  background:linear-gradient(160deg,#0d3630,#08211f 70%);
  box-shadow:var(--shadow-l);
  aspect-ratio:400/440;max-height:520px;
}
.about-visual svg{display:block;width:100%;height:100%;}
.about-badge{
  position:absolute;left:22px;bottom:22px;z-index:2;
  background:rgba(255,255,255,.95);border-radius:14px;padding:12px 18px;
  box-shadow:var(--shadow-m);display:flex;flex-direction:column;gap:2px;
}
.about-badge strong{color:var(--teal);font-size:15px;letter-spacing:.04em;}
.about-badge span{font-size:12.5px;color:var(--muted);}

.about-body{display:flex;flex-direction:column;gap:26px;}
.about-block{
  position:relative;padding:22px 24px 22px 26px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);
  transition:.3s;
}
.about-block:hover{transform:translateX(6px);box-shadow:var(--shadow-m);border-color:rgba(27,171,155,.35);}
.about-block::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;
  background:linear-gradient(var(--teal),var(--blue));
}
.ab-num{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;
  color:var(--teal);background:rgba(27,171,155,.10);padding:3px 10px;border-radius:6px;margin-bottom:10px;
}
.about-block h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.about-block p{font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- 一体双核 ---------- */
.model-diagram{max-width:960px;margin:0 auto;}
.core-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;}
.core-card{
  background:rgba(255,255,255,.055);border:1px solid rgba(181,232,224,.26);
  border-radius:18px;padding:30px 26px;text-align:center;backdrop-filter:blur(8px);
  transition:.3s;
}
.core-card:hover{background:rgba(27,171,155,.16);transform:translateY(-6px);border-color:var(--teal-light);}
.core-icon{
  width:44px;height:44px;margin:0 auto 14px;border-radius:12px;
  display:grid;place-items:center;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff;
}
.core-card h4{font-size:21px;font-weight:700;margin-bottom:6px;}
.core-card p{font-size:14px;color:rgba(255,255,255,.66);}
.core-link{position:relative;text-align:center;}
.core-link::before{
  content:"";display:block;width:100%;height:1px;
  background:linear-gradient(90deg,transparent,var(--teal-light),transparent);
}
.core-link span{
  display:inline-block;margin-top:10px;font-size:12px;letter-spacing:.1em;
  color:var(--teal-light);background:rgba(8,33,31,.9);padding:2px 12px;border-radius:999px;
}
.base-plate{
  margin-top:34px;border-radius:22px;padding:30px 26px 26px;text-align:center;
  background:linear-gradient(180deg,rgba(27,171,155,.13),rgba(27,171,155,.05));
  border:1px solid rgba(181,232,224,.30);
}
.base-title{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.base-badge{
  padding:5px 15px;border-radius:999px;font-size:13px;font-weight:800;letter-spacing:.14em;
  background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff;
}
.base-title h4{font-size:17.5px;font-weight:700;letter-spacing:.02em;}
.base-flow{
  display:flex;justify-content:center;gap:12px;flex-wrap:wrap;
}
.base-flow li{
  padding:9px 22px;border-radius:10px;font-size:15px;font-weight:600;letter-spacing:.06em;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);
}
.base-note{margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.58);}

/* ---------- 业务板块 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch;}
.biz-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px 28px;
  box-shadow:var(--shadow-s);transition:.35s cubic-bezier(.22,.61,.36,1);position:relative;overflow:hidden;
}
.biz-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--teal),var(--blue));
  transform:scaleX(0);transform-origin:left;transition:transform .45s;
}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-l);border-color:transparent;}
.biz-card:hover::before{transform:scaleX(1);}
.biz-card-feature{background:linear-gradient(180deg,#f2fbfa,#fff 40%);border-color:rgba(27,171,155,.28);}
.biz-top{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.biz-idx{
  font-size:12px;font-weight:800;letter-spacing:.1em;color:#fff;
  background:var(--ink);padding:4px 10px;border-radius:7px;
}
.biz-card-feature .biz-idx{background:linear-gradient(135deg,var(--teal),var(--blue));}
.biz-top h3{font-size:24px;font-weight:800;letter-spacing:-.2px;}
.biz-tag{
  font-size:13.5px;color:var(--teal);font-weight:600;margin-bottom:18px;
  padding-bottom:16px;border-bottom:1px dashed var(--line);
}
.biz-position{
  display:flex;align-items:center;gap:10px;margin:-6px 0 18px;
  padding:11px 15px;border-radius:12px;
  background:linear-gradient(100deg,rgba(27,171,155,.12),rgba(28,170,255,.08));
  border:1px solid rgba(27,171,155,.26);
}
.bp-k{
  font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--teal);
  background:rgba(255,255,255,.75);padding:3px 9px;border-radius:5px;white-space:nowrap;
}
.bp-v{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--ink);}
.biz-list{display:flex;flex-direction:column;gap:11px;flex:1;}
.biz-list li{
  position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-2);line-height:1.75;
}
.biz-list li::before{
  content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--teal);
}
.biz-foot{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);}
.chip{
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  background:var(--bg-tint);color:var(--muted);border:1px solid var(--line);
}
.chip-blue{background:rgba(28,170,255,.10);color:#0b6f9e;border-color:rgba(28,170,255,.22);}
.chip-green{background:rgba(45,106,45,.10);color:var(--green);border-color:rgba(45,106,45,.22);}
.chip-gold{background:rgba(255,171,0,.13);color:#9a6700;border-color:rgba(255,171,0,.28);}

/* ---------- 服务场景 ---------- */
.scene-grid{
  display:grid;gap:20px;
  grid-template-columns:1.15fr 1fr 1fr;
  grid-template-rows:270px 270px;
  align-items:stretch;
}
.scn-card{
  display:flex;flex-direction:column;overflow:hidden;margin:0;
  border-radius:18px;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-s);transition:.4s cubic-bezier(.22,.61,.36,1);
}
.scn-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-l);border-color:rgba(27,171,155,.34);}
.scn-card-lead{grid-column:1;grid-row:1 / span 2;}
.scn-art{
  position:relative;display:grid;place-items:center;padding:22px;flex:1;
  background:linear-gradient(160deg,#0e3a34,#08211f);
  overflow:hidden;min-height:0;
}
.scn-art::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 22%,rgba(27,171,155,.34),transparent 62%);
}
.scn-art svg{position:relative;z-index:1;width:100%;height:auto;max-height:100%;}
.scn-art-store svg{max-width:260px;}
.scn-art-rider svg{max-width:250px;}
.scn-art-pick svg{max-width:250px;}
.scn-art-biz svg{max-width:230px;}
.scn-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:7px;flex-shrink:0;}
.scn-idx{
  font-size:11.5px;font-weight:800;letter-spacing:.14em;color:var(--teal);
}
.scn-body h3{font-size:17.5px;font-weight:700;line-height:1.5;}
.scn-body p{font-size:14px;color:var(--muted);line-height:1.8;}

.channel-row{
  margin-top:30px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  padding:22px 30px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);
}
.channel-label{font-size:14px;font-weight:700;color:var(--muted);letter-spacing:.08em;}
.channel-list{display:flex;gap:14px;flex-wrap:wrap;}
.channel-list li{
  padding:8px 22px;border-radius:10px;font-size:15px;font-weight:600;color:var(--teal);
  background:rgba(27,171,155,.09);border:1px solid rgba(27,171,155,.22);
}

/* ---------- 社会责任 ---------- */
.social-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.social-card{
  background:rgba(255,255,255,.055);border:1px solid rgba(181,232,224,.20);
  border-radius:18px;padding:32px 26px;transition:.35s;
}
.social-card:hover{background:rgba(27,171,155,.12);transform:translateY(-6px);}
.social-ic{
  width:50px;height:50px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:rgba(181,232,224,.12);color:var(--teal-light);
}
.social-ic svg{width:26px;height:26px;}
.social-card h3{font-size:19px;font-weight:700;margin-bottom:12px;}
.social-card p{font-size:14.5px;color:rgba(255,255,255,.68);line-height:1.85;}
.mvv{
  margin-top:52px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  padding-top:40px;border-top:1px solid rgba(255,255,255,.14);
}
.mvv-k{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.2em;
  color:var(--gold);margin-bottom:12px;
}
.mvv-item p{font-size:16.5px;color:rgba(255,255,255,.88);line-height:1.85;font-weight:500;}

/* ---------- 发展历程 ---------- */
.timeline{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  list-style:none;margin:0;padding:0;
}
.timeline li{list-style:none;}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:56px;height:2px;
  background:linear-gradient(90deg,var(--teal),var(--blue),var(--gold));
  opacity:.35;border-radius:2px;
}
.tl-item{position:relative;padding-top:82px;display:flex;flex-direction:column;}
.tl-item::before{
  content:"";position:absolute;top:50px;left:0;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--teal);box-shadow:0 0 0 4px rgba(27,171,155,.13);
}
.tl-item-now::before{border-color:var(--blue);box-shadow:0 0 0 4px rgba(28,170,255,.13);}
.tl-item-next::before{border-color:var(--gold);box-shadow:0 0 0 4px rgba(255,171,0,.16);}
.tl-year{
  position:absolute;top:14px;left:0;font-size:26px;font-weight:800;letter-spacing:-.5px;
  color:var(--teal);line-height:1;
}
.tl-item-now .tl-year{color:var(--blue);}
.tl-item-next .tl-year{color:var(--gold);}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 22px;
  box-shadow:var(--shadow-s);transition:.35s;flex:1;display:flex;flex-direction:column;
}
.tl-item:hover .tl-body{transform:translateY(-6px);box-shadow:var(--shadow-m);}
.tl-body h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.tl-body p{font-size:14.3px;color:var(--muted);line-height:1.85;}

/* ---------- 联系我们 ---------- */
.section-contact{background:linear-gradient(180deg,var(--bg-tint),#fff);}
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:60px;align-items:center;}
.contact-list{display:flex;flex-direction:column;gap:0;margin-top:34px;}
.contact-list li{
  display:flex;gap:22px;align-items:baseline;padding:15px 0;border-bottom:1px dashed var(--line);
  flex-wrap:wrap;
}
.cl-k{font-size:13.5px;color:var(--muted);min-width:88px;font-weight:600;letter-spacing:.04em;}
.cl-v{font-size:17px;font-weight:600;color:var(--ink);}
.cl-v i{font-style:normal;color:var(--line);margin:0 8px;font-weight:300;}
.cl-hot{
  font-size:26px;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(120deg,var(--teal),var(--blue));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.footer-hot{font-size:19px!important;font-weight:800;color:var(--teal-light)!important;}
.footer-hot:hover{color:#fff!important;}
.contact-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap;}

.qr-card{
  background:#fff;border-radius:22px;padding:32px 28px;text-align:center;
  border:1px solid var(--line);box-shadow:var(--shadow-l);
}
.qr-frame{
  width:100%;max-width:250px;margin:0 auto 20px;padding:12px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  box-shadow:0 8px 24px rgba(9,60,55,.08);
}
.qr-frame img{width:100%;border-radius:8px;display:block;}
.qr-card h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.qr-card p{font-size:13.5px;color:var(--muted);}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:rgba(255,255,255,.7);padding:66px 0 26px;}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding-bottom:44px;}
.footer-logo{height:38px;width:auto;margin-bottom:16px;}
.footer-brand p{font-size:13.5px;line-height:1.9;}
.footer-col{display:flex;flex-direction:column;gap:11px;}
.footer-col h4{font-size:14.5px;color:#fff;font-weight:700;margin-bottom:5px;letter-spacing:.04em;}
.footer-col a,.footer-loc{font-size:13.8px;color:rgba(255,255,255,.6);transition:.25s;}
.footer-col a:hover{color:var(--teal-light);transform:translateX(3px);}
/* ---------- 法律文档页（隐私政策 / 服务条款） ---------- */
.doc-page{background:var(--bg-tint);}
.doc-head{
  background:linear-gradient(150deg,#0b2a26,#08211f);
  color:#fff;padding:78px 0 56px;
}
.doc-back{
  display:inline-block;font-size:14px;color:var(--teal-light);
  margin-bottom:24px;transition:.25s;
}
.doc-back:hover{transform:translateX(-3px);color:#fff;}
.doc-head h1{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.4px;}
.doc-meta{margin-top:12px;font-size:14px;color:rgba(255,255,255,.6);}
.doc-body{
  padding:52px 0 72px;max-width:860px;
  background:#fff;border-radius:18px;margin-top:-28px;
  padding:44px 48px;box-shadow:var(--shadow-m);
}
.doc-notice{
  background:rgba(255,171,0,.10);border:1px solid rgba(255,171,0,.35);
  border-radius:12px;padding:16px 20px;margin-bottom:34px;
}
.doc-notice strong{
  display:block;font-size:13px;letter-spacing:.1em;color:#9a6700;margin-bottom:6px;
}
.doc-notice p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.doc-body section{margin-bottom:34px;}
.doc-body section:last-of-type{margin-bottom:0;}
.doc-body h2{
  font-size:20px;font-weight:700;margin-bottom:14px;padding-left:13px;
  border-left:4px solid var(--teal);line-height:1.5;
}
.doc-body h3{font-size:16px;font-weight:700;margin:20px 0 10px;color:var(--ink);}
.doc-body p{font-size:15px;color:var(--ink-2);line-height:1.95;margin-bottom:12px;}
.doc-body ul{margin:0 0 12px;padding-left:4px;list-style:none;}
.doc-body ul li{
  position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:6px;
}
.doc-body ul li::before{
  content:"";position:absolute;left:4px;top:12px;width:5px;height:5px;border-radius:50%;background:var(--teal);
}
.doc-body b{color:var(--ink);font-weight:700;}
.doc-foot{
  margin-top:36px;padding-top:20px;border-top:1px dashed var(--line);
  font-size:13.5px;color:var(--muted);
}
.doc-foot-bar{
  background:var(--dark);color:rgba(255,255,255,.55);
  padding:22px 0;font-size:13px;
}
.doc-foot-bar .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.doc-foot-bar a{color:rgba(255,255,255,.6);transition:.25s;}
.doc-foot-bar a:hover{color:var(--teal-light);}

.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.45);
}
.footer-legal{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.footer-legal a{color:rgba(255,255,255,.45);transition:.25s;}
.footer-legal a:hover{color:var(--teal-light);}
.footer-legal a[hidden]{display:none;}
.footer-slogan{color:rgba(181,232,224,.7);}