/* ==========================================================================
   分钟传媒 · 电梯广告站点样式
   编辑提示：配色统一改文件顶部 :root 变量即可全站生效
   ========================================================================== */

:root{
  --ink:#0B1220;
  --ink-2:#141F35;
  --ink-3:#1D2A44;
  --brand:#1352F0;
  --brand-2:#3D7BFF;
  --cyan:#22D3EE;
  --amber:#FFB020;
  --bg:#F5F8FD;
  --bg-tint:#EDF2FB;
  --line:#E2E8F4;
  --text:#18202F;
  --muted:#5C6879;
  --white:#fff;

  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 8px rgba(16,32,72,.06);
  --shadow:0 12px 32px rgba(16,32,72,.10);
  --shadow-lg:0 24px 64px rgba(16,32,72,.16);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--white);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.icon{width:18px;height:18px;fill:currentColor;flex:none}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container--narrow{max-width:860px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;cursor:pointer;
  font:inherit;font-weight:600;white-space:nowrap;
  padding:12px 22px;transition:.22s ease;text-align:center;
}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--lg{padding:15px 30px;font-size:16px}
.btn--block{width:100%}
.btn--primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(19,82,240,.28)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(19,82,240,.34)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.28);backdrop-filter:blur(6px)}
.btn--ghost:hover{background:rgba(255,255,255,.16)}
.btn--outline{background:transparent;color:var(--brand);border-color:#C8D8FB}
.btn--outline:hover{background:#F2F6FF;border-color:var(--brand)}

/* ---------- 顶部通告条 ---------- */
.topbar{background:var(--ink);color:#C7D3E8;font-size:13.5px}
.topbar__inner{display:flex;align-items:center;gap:10px;min-height:40px;flex-wrap:wrap}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.18);flex:none}
.topbar__link{margin-left:auto;color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.35)}
.topbar__link:hover{border-color:#fff}

/* ---------- 页头 ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:.25s}
.header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(16,32,72,.07)}
.header__inner{display:flex;align-items:center;gap:24px;min-height:74px}
.brand__logo{height:38px;width:auto}
.nav{display:flex;gap:26px;margin-left:auto}
.nav__link{font-size:15px;font-weight:500;color:#2B3648;position:relative;padding:6px 0}
.nav__link::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--brand);transition:right .25s}
.nav__link:hover{color:var(--brand)}
.nav__link:hover::after{right:0}
.header__actions{display:flex;align-items:center;gap:14px}
.header__phone{display:inline-flex;align-items:center;gap:7px;font-weight:700;color:var(--ink);font-size:15px}
.header__phone:hover{color:var(--brand)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:19px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
   radial-gradient(1100px 620px at 88% -10%,rgba(34,211,238,.20),transparent 62%),
   radial-gradient(900px 560px at 6% 8%,rgba(61,123,255,.26),transparent 58%),
   linear-gradient(160deg,#0A1428 0%,#0E1B36 46%,#0B1220 100%);
  color:#fff;padding:84px 0 96px}
.hero__glow{position:absolute;inset:auto -10% -40% -10%;height:60%;background:radial-gradient(closest-side,rgba(19,82,240,.35),transparent);filter:blur(30px);pointer-events:none}
.hero__inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:#BBD3FF;
  background:rgba(61,123,255,.16);border:1px solid rgba(61,123,255,.35);border-radius:999px;padding:7px 15px;margin-bottom:22px}
.hero__title{font-size:clamp(34px,4.4vw,58px);font-weight:800;letter-spacing:-.02em}
.hero__title em{font-style:normal;background:linear-gradient(120deg,var(--cyan),#7FB2FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{margin-top:22px;font-size:17px;line-height:1.85;color:#C3D0E6;max-width:38em}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero__trust{display:flex;gap:38px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);flex-wrap:wrap}
.hero__trust li{display:flex;flex-direction:column}
.hero__trust strong{font-size:24px;font-weight:800;letter-spacing:-.01em}
.hero__trust span{font-size:13px;color:#9FB0CC}

/* 电梯屏示意 */
.hero__visual{position:relative;display:flex;justify-content:center}
.screen{width:min(320px,100%);background:linear-gradient(180deg,#22304C,#141E33);
  border:1px solid rgba(255,255,255,.14);border-radius:26px;padding:14px;box-shadow:var(--shadow-lg)}
.screen__frame{background:#0A1120;border-radius:16px;padding:10px;border:1px solid rgba(255,255,255,.08)}
.screen__ad{position:relative;aspect-ratio:9/14;border-radius:12px;overflow:hidden;
  background:linear-gradient(150deg,#1352F0,#22D3EE 70%,#8BE9F7);display:flex;flex-direction:column;justify-content:flex-end;padding:20px}
.screen__ad::before{content:"";position:absolute;inset:0;background:
  radial-gradient(220px 160px at 78% 18%,rgba(255,255,255,.42),transparent 60%),
  linear-gradient(180deg,transparent 45%,rgba(4,12,28,.55));}
.screen__tag{position:absolute;top:14px;left:14px;font-size:11.5px;font-weight:700;letter-spacing:.04em;
  background:rgba(4,12,28,.42);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:4px 11px;backdrop-filter:blur(4px)}
.screen__brand{position:relative;font-size:25px;font-weight:800;letter-spacing:-.01em;text-shadow:0 2px 12px rgba(4,12,28,.3)}
.screen__sub{position:relative;font-size:13px;opacity:.92;margin-top:4px}
.screen__bar{position:relative;height:4px;border-radius:99px;background:rgba(255,255,255,.32);margin-top:16px;overflow:hidden}
.screen__bar i{display:block;height:100%;width:38%;background:#fff;border-radius:99px;animation:play 4.6s linear infinite}
@keyframes play{0%{width:0}100%{width:100%}}
.screen__caption{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:12.5px;color:#9FB0CC;padding:0 4px}
.screen__live{display:inline-flex;align-items:center;gap:6px;color:#7EF0C0}
.screen__live i{width:6px;height:6px;border-radius:50%;background:#7EF0C0;box-shadow:0 0 0 4px rgba(126,240,192,.18)}
.float-card{position:absolute;background:#fff;color:var(--ink);border-radius:16px;padding:13px 17px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;line-height:1.3}
.float-card b{font-size:20px;font-weight:800}
.float-card span{font-size:12px;color:var(--muted)}
.float-card--a{top:8%;left:-4%;animation:float 6s ease-in-out infinite}
.float-card--b{bottom:6%;right:-6%;animation:float 7.5s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- 数据条 ---------- */
.metrics{background:var(--bg);padding:0 0 26px}
.metrics__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);transform:translateY(-46px);overflow:hidden}
.metric{padding:28px 22px;text-align:center;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric b{display:block;font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(120deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.metric span{font-size:13.5px;color:var(--muted)}
.metrics__note{font-size:12.5px;color:#93A0B4;text-align:center;margin-top:-24px;padding-bottom:8px}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0}
.section--tint{background:var(--bg)}
.section--dark{background:linear-gradient(165deg,#0B1424,#101C33);color:#fff}
.section__head{max-width:760px;margin-bottom:46px}
.section__head--light{color:#fff}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.eyebrow--light{color:var(--cyan)}
.section__title{font-size:clamp(25px,3vw,38px);font-weight:800}
.section__title--light{color:#fff}
.section__lead{margin-top:16px;color:var(--muted);font-size:16.5px}
.section--dark .section__lead{color:#B4C2DA}

/* ---------- 媒体资源卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 24px;
  transition:.26s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#CBD9F6}
.card__icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,#EAF1FF,#DCEBFF);color:var(--brand)}
.card__icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
.card__spec{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13.5px}
.card__spec li{display:flex;justify-content:space-between;gap:10px;padding:5px 0}
.card__spec span{color:#8A96A8}
.card__spec b{font-weight:600;text-align:right}

/* ---------- 规格表 ---------- */
.table-wrap{margin-top:44px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.spec-table{width:100%;border-collapse:collapse;min-width:720px}
.spec-table caption{caption-side:top;text-align:left;padding:18px 24px 4px;font-size:13.5px;color:var(--muted)}
.spec-table th,.spec-table td{padding:15px 24px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.spec-table thead th{background:#F7FAFF;font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.02em;white-space:nowrap}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:#FAFCFF}
.spec-table td:first-child{font-weight:600}

/* ---------- 投放方案 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;display:flex;flex-direction:column;transition:.26s}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.plan--hot{border-color:#B9CFFB;box-shadow:0 18px 44px rgba(19,82,240,.14)}
.plan__flag{position:absolute;top:-13px;left:28px;background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;font-size:12px;font-weight:700;border-radius:999px;padding:5px 14px}
.plan h3{font-size:21px;font-weight:800;margin-bottom:8px}
.plan__for{font-size:13.5px;color:var(--brand);font-weight:600}
.plan ul{margin:20px 0 26px;display:grid;gap:11px}
.plan li{position:relative;padding-left:26px;color:var(--muted);font-size:14.5px}
.plan li::before{content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--cyan));opacity:.16}
.plan li::after{content:"";position:absolute;left:5px;top:12px;width:6px;height:3px;border-left:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);transform:rotate(-45deg)}
.plan .btn{margin-top:auto}

/* ---------- 覆盖网络 ---------- */
.coverage{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.coverage__list{display:grid;gap:12px}
.cov{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;transition:.22s}
.cov:hover{border-color:#CBD9F6;box-shadow:var(--shadow-sm);transform:translateX(4px)}
.cov b{font-size:16px}
.cov span{color:var(--muted);font-size:13.5px}
.cov i{font-style:normal;font-weight:700;color:var(--brand);font-size:14px;background:#EDF3FF;border-radius:999px;padding:4px 12px;white-space:nowrap}
.coverage__types{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px}
.coverage__types h3{font-size:18px;margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.chip{font-size:13.5px;background:var(--bg-tint);border:1px solid #DCE6F8;border-radius:999px;padding:7px 15px;color:#2C3A55}
.coverage__note{display:grid;gap:12px;border-top:1px dashed var(--line);padding-top:18px}
.coverage__note p{font-size:14.5px;color:var(--muted)}
.coverage__note b{color:var(--text)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.steps li{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:26px 22px}
.steps__no{font-size:13px;font-weight:800;color:var(--cyan);letter-spacing:.1em}
.steps h3{font-size:17px;margin:10px 0 8px;color:#fff}
.steps p{font-size:14px;color:#A9B8D2}

/* ---------- 优势 ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.24s}
.feature:hover{border-color:#CBD9F6;box-shadow:var(--shadow-sm);transform:translateY(-4px)}
.feature h3{font-size:17px;margin-bottom:9px;position:relative;padding-left:18px}
.feature h3::before{content:"";position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:3px;background:linear-gradient(135deg,var(--brand),var(--cyan))}
.feature p{color:var(--muted);font-size:14.5px}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;transition:.26s}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case__tag{display:inline-block;font-size:12.5px;font-weight:600;color:var(--brand);background:#EDF3FF;border-radius:999px;padding:5px 13px;margin-bottom:16px}
.case h3{font-size:18px;margin-bottom:10px}
.case p{color:var(--muted);font-size:14.5px}
.case__stats{display:flex;gap:26px;margin-top:20px;padding-top:16px;border-top:1px dashed var(--line);flex-wrap:wrap}
.case__stats span{font-size:13px;color:var(--muted)}
.case__stats b{display:block;font-size:19px;color:var(--text);font-weight:800}

/* 品牌墙 */
.logos{margin-top:56px;text-align:center}
.logos__title{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.logos__grid{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}
.logos__grid span{display:grid;place-items:center;height:60px;background:#fff;border:1px solid var(--line);border-radius:12px;color:#96A2B5;font-size:13px;font-weight:600}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px}
.faq__item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s}
.faq__item[open]{border-color:#C6D7FA;box-shadow:var(--shadow-sm)}
.faq__item summary{cursor:pointer;list-style:none;padding:20px 56px 20px 24px;font-weight:600;font-size:16px;position:relative}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"";position:absolute;right:24px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:translateY(-70%) rotate(45deg);transition:.25s}
.faq__item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq__body{padding:0 24px 22px;color:var(--muted);font-size:15px}

/* ---------- 联系 ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact__lead{margin-top:18px;color:#B4C2DA;font-size:16px}
.contact__list{margin-top:36px;display:grid;gap:18px}
.contact__list li{display:grid;gap:4px;border-left:2px solid rgba(34,211,238,.5);padding-left:16px}
.contact__label{font-size:12.5px;color:#8FA1BF;letter-spacing:.06em}
.contact__list a,.contact__list span:not(.contact__label){font-size:17px;font-weight:600;color:#fff}
.contact__list a:hover{color:var(--cyan)}
.form{background:#fff;color:var(--text);border-radius:var(--radius-lg);padding:30px 28px;box-shadow:var(--shadow-lg)}
.form__row{margin-bottom:16px}
.form__row--split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:#39445A}
.form input,.form select,.form textarea{
  width:100%;font:inherit;font-size:15px;color:var(--text);background:#F8FAFE;
  border:1px solid var(--line);border-radius:12px;padding:12px 14px;transition:.2s;resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(19,82,240,.10)}
.form input:invalid:not(:placeholder-shown){border-color:#E86A6A}
.form__hint{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center}
.form__hint.is-ok{color:#12855E;font-weight:600}
.form__hint.is-err{color:#C0392B;font-weight:600}

/* ---------- 页脚 ---------- */
.footer{background:#070D18;color:#92A2BD;padding:56px 0 26px}
.footer__inner{display:grid;grid-template-columns:1.2fr 1fr auto;gap:32px;align-items:center;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.09)}
.footer__brand p{font-size:13.5px;margin-top:12px}
.footer__nav{display:flex;flex-wrap:wrap;gap:18px;font-size:14px}
.footer__nav a:hover{color:#fff}
.footer__contact{display:grid;gap:6px;text-align:right;font-size:14.5px}
.footer__contact a:hover{color:var(--cyan)}
.footer__bottom{display:flex;justify-content:space-between;gap:12px;padding-top:20px;font-size:12.5px;color:#6C7C96;flex-wrap:wrap}

/* ---------- 滚动出现动画（仅在 JS 可用时生效） ---------- */
html.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
html.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  .screen__bar i,.float-card{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .features{grid-template-columns:repeat(2,1fr)}
  .logos__grid{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:960px){
  .nav{position:fixed;inset:74px 0 auto;flex-direction:column;gap:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px 24px 20px;
    transform:translateY(-140%);transition:transform .3s ease;margin:0}
  .nav.is-open{transform:none}
  .nav__link{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav__link:last-child{border-bottom:0}
  .burger{display:flex}
  .header__phone span{display:none}
  .hero{padding:56px 0 76px}
  .hero__inner{grid-template-columns:1fr;gap:44px}
  .hero__visual{order:-1}
  .float-card--a{left:0}
  .float-card--b{right:0}
  .metrics__grid{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .plans,.cases{grid-template-columns:1fr}
  .coverage{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr;gap:36px}
  .footer__inner{grid-template-columns:1fr;gap:20px;text-align:left}
  .footer__contact{text-align:left}
  .section{padding:64px 0}
}
@media (max-width:620px){
  .cards,.features{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .logos__grid{grid-template-columns:repeat(2,1fr)}
  .hero__trust{gap:24px}
  .form__row--split{grid-template-columns:1fr}
  .container{padding:0 18px}
}