/* =====================================================================
   LEUNG 力远体育 · 站点改版设计系统 v2
   共用 tokens / 导航 / 按钮 / 版式基元 / 卡片 / 表单 / 页脚
   ===================================================================== */

:root{
  --ink:#14181c;
  --ink-soft:#49535b;
  --muted:#6f7981;
  --paper:#ffffff;
  --paper-2:#f6f7f9;
  --white:#fff;
  --brand:#006699;
  --brand-deep:#0a2735;
  --accent:#66cc00;
  --rule:rgba(20,24,28,.11);
  --serif:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",Georgia,serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  --nav-h:64px;
  --read:700px;
  --wide:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
     font-size:17px;line-height:1.95;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
::selection{background:rgba(0,102,153,.16);}

/* ---------------- 导航（白底常驻） ---------------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:60;height:var(--nav-h);
     background:rgba(255,255,255,.94);
     backdrop-filter:saturate(180%) blur(12px);box-shadow:0 1px 0 rgba(20,24,28,.07);
     transition:box-shadow .35s;}
.nav__inner{width:100%;max-width:var(--wide);margin:0 auto;height:var(--nav-h);
     display:flex;align-items:center;justify-content:space-between;
     padding:0 clamp(20px,5vw,40px);}
.nav.is-scrolled{box-shadow:0 1px 0 var(--rule),0 12px 30px rgba(20,24,28,.06);}
.nav__brand{position:relative;display:flex;align-items:center;gap:10px;color:var(--ink);}
.nav__brand img{height:16px;width:auto;image-rendering:auto;}
.nav__links{position:relative;display:none;gap:clamp(14px,1.9vw,28px);font-size:14.5px;font-weight:500;
     letter-spacing:.03em;color:var(--ink-soft);}
.nav__links a{padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap;transition:color .25s,border-color .25s;}
.nav__links a:hover{color:var(--brand);}
.nav__links a.is-on{color:var(--brand);border-bottom-color:var(--brand);}
.nav__right{position:relative;display:flex;align-items:center;gap:14px;}
.nav__lang{font-size:13px;font-weight:500;letter-spacing:.1em;color:var(--muted);
     display:flex;align-items:center;gap:2px;transition:color .3s;}
.nav__lang b{color:var(--ink);font-weight:600;}
.nav__lang:hover{color:var(--brand);}
.nav__burger{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
     border:1px solid var(--rule);background:transparent;color:var(--ink);cursor:pointer;}
.nav__burger:hover{border-color:var(--ink);}
@media(min-width:960px){.nav__links{display:flex;} .nav__burger{display:none;}}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:70;} .drawer[hidden]{display:none;}
.drawer.is-open{display:block;}
.drawer__bg{position:absolute;inset:0;background:rgba(10,12,14,.5);backdrop-filter:blur(2px);}
.drawer__panel{position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--paper);
     padding:22px 24px 40px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;
     box-shadow:-24px 0 60px rgba(0,0,0,.18);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer__head span{font-size:12px;letter-spacing:.26em;color:var(--muted);text-transform:uppercase;}
.drawer__close{width:36px;height:36px;border:1px solid var(--rule);background:transparent;cursor:pointer;
     font-size:18px;line-height:1;color:var(--ink);}
.drawer a{padding:13px 0;border-bottom:1px solid var(--rule);font-size:15.5px;}
.drawer a.is-on{color:var(--brand);}
.drawer .drawer__sub{padding-left:14px;font-size:14px;color:var(--ink-soft);}

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
     padding:13px 26px;font-size:14px;letter-spacing:.1em;line-height:1;
     border:1px solid transparent;cursor:pointer;transition:background .3s,color .3s,border-color .3s,transform .3s;}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:#005580;transform:translateY(-1px);}
.btn--ghost{border-color:rgba(20,24,28,.24);color:var(--ink);background:transparent;}
.btn--ghost:hover{border-color:var(--ink);}
.btn--light{border-color:rgba(255,255,255,.6);color:#fff;}
.btn--light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn--sm{padding:10px 18px;font-size:13px;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;letter-spacing:.12em;
     color:var(--brand);border-bottom:1px solid rgba(0,102,153,.35);padding-bottom:5px;transition:gap .3s,border-color .3s;}
.link-arrow:hover{gap:14px;border-bottom-color:var(--brand);}

/* ---------------- 版式基元 ---------------- */
.reading{max-width:var(--read);margin:0 auto;padding:0 clamp(20px,5vw,26px);}
.wide{max-width:var(--wide);margin:0 auto;padding:0 clamp(20px,5vw,26px);}
.sect-label{display:flex;align-items:center;gap:14px;margin:0 0 clamp(20px,3vh,26px);
     font-size:12.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--muted);}
.sect-label b{font-family:var(--serif);font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.1em;}
.sect-label::after{content:"";flex:1;height:1px;background:var(--rule);}
.sect-title{font-family:var(--serif);font-weight:600;font-size:clamp(26px,3.4vw,38px);
     line-height:1.42;letter-spacing:.01em;margin:0 0 clamp(24px,3.4vw,34px);}
p{margin:0 0 1.4em;}
.lead{font-size:clamp(17.5px,1.9vw,20px);line-height:2.05;color:#1e2429;}
.body-text{color:var(--ink-soft);}
.divider{height:1px;background:var(--rule);max-width:var(--read);margin:0 auto clamp(54px,8vh,84px);}
.reveal{opacity:0;transform:translateY(24px);
     transition:opacity .9s cubic-bezier(.22,.61,.36,1),transform .9s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}}

/* ---------------- 首屏：照片型（关于页） ---------------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:flex-end;
      background:#1b1009 center/cover no-repeat;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;
      background:linear-gradient(100deg,rgba(9,7,6,.80) 0%,rgba(9,7,6,.52) 38%,rgba(9,7,6,0) 66%);}
.hero::after{content:"";position:absolute;inset:0;
      background:linear-gradient(to top,rgba(9,7,6,.86) 0%,rgba(9,7,6,.42) 26%,rgba(9,7,6,0) 55%);}
.hero__inner{position:relative;z-index:2;width:100%;
      padding:0 clamp(20px,6vw,88px) clamp(46px,7vh,92px);}
.eyebrow{display:flex;align-items:center;gap:14px;font-size:12.5px;letter-spacing:.3em;
      text-transform:uppercase;color:rgba(255,255,255,.76);margin-bottom:clamp(16px,2.6vh,26px);}
.eyebrow::before{content:"";width:44px;height:1px;background:currentColor;opacity:.75;}
.hero h1{margin:0;color:#fff;font-family:var(--serif);font-weight:600;
      font-size:clamp(34px,5.2vw,70px);line-height:1.24;letter-spacing:.02em;max-width:11.2em;}
.hero__sub{margin:clamp(16px,2.4vh,24px) 0 0;color:rgba(255,255,255,.87);
      font-size:clamp(14.5px,1.35vw,17px);letter-spacing:.04em;max-width:30em;line-height:1.8;}
.hero__meta{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(18px,3vw,40px);
      margin-top:clamp(28px,4.4vh,52px);padding-top:clamp(20px,3vh,30px);
      border-top:1px solid rgba(255,255,255,.26);max-width:820px;}
@media(min-width:720px){.hero__meta{grid-template-columns:repeat(4,1fr);}}
.hero__meta b{display:block;font-family:var(--serif);font-weight:600;color:#fff;
      font-size:clamp(25px,2.9vw,36px);line-height:1.12;}
.hero__meta span{display:block;margin-top:9px;font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.84);}

/* ---------------- 首屏：展台型（首页） ---------------- */
.stage{position:relative;padding-top:calc(var(--nav-h) + clamp(28px,6vh,72px));
     padding-bottom:clamp(40px,7vh,80px);overflow:hidden;
     background:#ffffff;}
.stage::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--rule);}
.stage__grid{max-width:var(--wide);margin:0 auto;padding:0 clamp(20px,5vw,40px);
     display:grid;gap:clamp(24px,4vw,56px);grid-template-columns:1fr;align-items:center;}
@media(min-width:900px){.stage__grid{grid-template-columns:1.02fr .98fr;}}
.stage__eyebrow{display:flex;align-items:center;gap:14px;font-size:12.5px;letter-spacing:.3em;
     text-transform:uppercase;color:var(--muted);margin-bottom:clamp(18px,2.6vh,26px);}
.stage__eyebrow::before{content:"";width:44px;height:1px;background:var(--brand);opacity:.6;}
.stage h1{margin:0;font-family:var(--serif);font-weight:600;color:var(--ink);
     font-size:clamp(32px,4.6vw,58px);line-height:1.26;letter-spacing:.01em;}
.stage__sub{margin:clamp(16px,2.4vh,24px) 0 0;font-size:clamp(15px,1.5vw,18px);
     color:var(--ink-soft);line-height:1.85;max-width:30em;}
.stage__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:clamp(24px,3.6vh,36px);}
.stage__media{position:relative;display:flex;align-items:center;justify-content:center;}
.stage__media img{width:100%;max-width:650px;height:auto;filter:drop-shadow(0 38px 56px rgba(20,24,28,.22));}
.stage__tag{position:absolute;left:2px;bottom:-4px;font-size:12px;letter-spacing:.16em;color:var(--ink-soft);
     padding-left:14px;border-left:2px solid var(--brand);}
.stage__rule{max-width:var(--wide);margin:clamp(30px,5vh,54px) auto 0;padding:0 clamp(20px,5vw,40px);}
.stage__strip{max-width:var(--wide);margin:22px auto 0;padding:0 clamp(20px,5vw,40px);
     display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(14px,2.4vw,28px);
     border-top:1px solid var(--rule);padding-top:22px;}
@media(min-width:820px){.stage__strip{grid-template-columns:repeat(4,1fr);}}
.stage__strip div{font-size:12.5px;letter-spacing:.16em;color:var(--muted);}
.stage__strip b{display:block;font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);
     font-weight:600;color:var(--ink);letter-spacing:.02em;margin-bottom:4px;}

/* ---------------- 段落容器 ---------------- */
.section{padding:clamp(64px,10vh,112px) 0;}
.section--tight{padding:clamp(46px,7vh,76px) 0;}
.section--alt{background:var(--paper-2);}
.section--dark{background:var(--brand-deep);color:#fff;padding:clamp(72px,12vh,132px) 0;}
.section--dark .sect-label{color:rgba(255,255,255,.5);}
.section--dark .sect-label b{color:var(--accent);}
.section--dark .sect-label::after{background:rgba(255,255,255,.16);}
.section--dark .sect-title,.section--dark h2{color:#fff;}
.section--dark p{color:rgba(255,255,255,.76);}

/* ---------------- 产品卡片 ---------------- */
.pgrid{display:grid;gap:clamp(18px,2.6vw,28px);grid-template-columns:1fr;}
.pgrid--2{grid-template-columns:1fr;}
.pgrid--3{grid-template-columns:1fr;}
.pgrid--4{grid-template-columns:1fr;}
@media(min-width:680px){.pgrid--2,.pgrid--3,.pgrid--4{grid-template-columns:1fr 1fr;}}
@media(min-width:1000px){.pgrid--3{grid-template-columns:repeat(3,1fr);}
  .pgrid--4{grid-template-columns:repeat(4,1fr);}}
.pcard{background:#fff;border:1px solid rgba(20,24,28,.1);display:flex;flex-direction:column;
     box-shadow:0 1px 2px rgba(20,24,28,.03);transition:transform .45s ease,box-shadow .45s ease;}
.pcard:hover{transform:translateY(-4px);box-shadow:0 22px 46px rgba(20,24,28,.09);}
.pcard__img{aspect-ratio:4/3;background:#fff;overflow:hidden;display:flex;align-items:center;justify-content:center;}
.pcard__img img{width:100%;height:100%;object-fit:contain;padding:5.5%;transition:transform .7s ease;}
.pcard:hover .pcard__img img{transform:scale(1.04);}
.pcard__img--cover img{object-fit:cover;padding:0;object-position:50% 20%;}
.pcard__body{padding:clamp(18px,2.4vw,24px) clamp(18px,2.4vw,26px) clamp(20px,2.6vw,26px);
     display:flex;flex-direction:column;flex:1;}
.pcard__tag{display:block;font-size:11px;letter-spacing:.24em;color:var(--brand);margin-bottom:10px;}
.pcard h3{margin:0 0 8px;font-family:var(--serif);font-size:clamp(18px,2vw,21px);font-weight:600;}
.pcard p{margin:0;font-size:14.5px;line-height:1.85;color:var(--muted);}
.pcard__more{margin-top:auto;padding-top:14px;font-size:13px;letter-spacing:.1em;color:var(--brand);opacity:.75;
     transition:opacity .35s,transform .35s;}
.pcard:hover .pcard__more{opacity:1;transform:translateX(3px);}

/* ---------------- 页头（内页） ---------------- */
.pagehead{padding-top:calc(var(--nav-h) + clamp(34px,5vh,62px));padding-bottom:clamp(22px,3vh,34px);
     background:var(--paper);}
.pagehead .sect-title{margin-bottom:clamp(14px,2vh,20px);}
.pagehead p{margin:0;color:var(--ink-soft);max-width:44em;}

/* 分类筛选 */
.filters{display:flex;flex-wrap:wrap;gap:clamp(16px,2.6vw,32px);padding:18px 0;
     border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);margin-top:clamp(22px,3.4vh,34px);}
.filters a{font-size:14px;letter-spacing:.06em;color:var(--muted);padding-bottom:5px;
     border-bottom:2px solid transparent;transition:color .25s,border-color .25s;}
.filters a:hover{color:var(--ink);}
.filters a.is-on{color:var(--ink);border-bottom-color:var(--brand);font-weight:600;}
.filters a span{font-size:11.5px;color:var(--muted);margin-left:6px;letter-spacing:0;}

/* ---------------- 产品详情 ---------------- */
.pd{max-width:var(--wide);margin:0 auto;padding:0 clamp(20px,5vw,40px);}
.pd__grid{display:grid;gap:clamp(26px,4vw,58px);grid-template-columns:1fr;
     padding-top:calc(var(--nav-h) + clamp(28px,4vh,54px));}
@media(min-width:900px){.pd__grid{grid-template-columns:1.06fr .94fr;align-items:start;}}
.pd__gallery{position:sticky;top:calc(var(--nav-h) + 22px);}
.pd__main{background:#fff;border:1px solid rgba(20,24,28,.06);aspect-ratio:1;
     display:flex;align-items:center;justify-content:center;overflow:hidden;}
.pd__main img{width:100%;height:100%;object-fit:contain;padding:7%;}
.pd__thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;}
.pd__thumb{width:98px;height:98px;padding:0;border:1px solid var(--rule);background:#fff;
     cursor:pointer;overflow:hidden;transition:border-color .25s;}
.pd__thumb img{width:100%;height:100%;object-fit:contain;padding:5px;}
.pd__thumb.is-on{border-color:var(--brand);border-width:2px;} .pd__thumb:hover{border-color:var(--brand);}
.pd__crumb{font-size:12.5px;letter-spacing:.06em;color:var(--muted);margin-bottom:16px;}
.pd__crumb a:hover{color:var(--brand);}
.pd__cat{font-size:11.5px;letter-spacing:.24em;color:var(--brand);margin:0 0 12px;}
.pd h1{margin:0 0 16px;font-family:var(--serif);font-weight:600;
     font-size:clamp(26px,3.2vw,38px);line-height:1.36;letter-spacing:.01em;}
.pd__desc{color:var(--ink-soft);font-size:16px;}
.pd__actions{display:flex;flex-wrap:wrap;gap:12px;margin:clamp(22px,3vh,32px) 0 clamp(26px,3.6vh,36px);
     padding-bottom:clamp(22px,3vh,30px);border-bottom:1px solid var(--rule);}
.pd__specs{border-top:1px solid var(--rule);margin-top:6px;}
.pd__spec{display:grid;grid-template-columns:minmax(92px,26%) 1fr;gap:18px;
     padding:16px 0;border-bottom:1px solid var(--rule);font-size:15.5px;line-height:1.75;}
.pd__spec span{color:var(--muted);font-size:14px;letter-spacing:.02em;}
.pd__spec strong{font-weight:500;color:var(--ink);}
.pd__promise{display:grid;gap:10px;margin:clamp(22px,3vh,28px) 0 0;padding:0;list-style:none;}
.pd__promise li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-soft);}
.pd__promise li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
     background:var(--accent);border-radius:50%;}
.pd-detail{max-width:var(--wide);margin:0 auto;padding:0 clamp(20px,5vw,40px);}
.pd-detail img{width:100%;background:#fff;border:1px solid rgba(20,24,28,.06);}
.pd-detail figure{margin:0 0 clamp(18px,3vh,28px);}
.pd-detail figcaption{font-size:12.5px;color:var(--muted);margin-top:8px;letter-spacing:.05em;}

/* ---------------- 联系 / 表单 ---------------- */
.contact-grid{display:grid;gap:clamp(30px,5vw,64px);grid-template-columns:1fr;}
@media(min-width:920px){.contact-grid{grid-template-columns:.94fr 1.06fr;align-items:start;}}
.info-list{display:grid;gap:clamp(20px,3vh,28px);margin:0;padding:0;}
.info-list dt{font-size:11px;letter-spacing:.26em;color:var(--muted);text-transform:uppercase;margin-bottom:5px;}
.info-list dd{margin:0;font-family:var(--serif);font-size:clamp(17px,2vw,21px);}
.info-list dd a:hover{color:var(--brand);}
.info-list .addr{font-family:var(--sans);font-size:15px;line-height:1.9;color:var(--ink-soft);}
.qr{display:grid;justify-items:start;gap:10px;margin-top:clamp(22px,3vh,30px);}
.qr img{width:140px;height:140px;object-fit:contain;border:1px solid var(--rule);padding:14px;background:#fff;}
.qr span{font-size:12px;color:var(--muted);letter-spacing:.1em;}

.form{display:grid;gap:clamp(14px,2vh,19px);max-width:560px;}
.form > .btn{justify-self:start;}
.form__row{display:grid;gap:7px;}
.form__pair{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;}
.form label{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);}
.form input[type=text],.form input[type=email],.form textarea{
     width:100%;padding:13px 2px;border:0;border-bottom:1px solid rgba(20,24,28,.22);
     background:transparent;font-family:inherit;font-size:16px;color:var(--ink);
     transition:border-color .3s;border-radius:0;}
.form input:focus,.form textarea:focus{outline:none;border-bottom-color:var(--brand);}
.form textarea{min-height:96px;resize:vertical;}
.form__opts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
@media(min-width:560px){.form__opts{grid-template-columns:repeat(4,1fr);}}
.form__opt span{text-align:center;}
.form__opt{position:relative;display:block;}
.form__opt input{position:absolute;opacity:0;pointer-events:none;}
.form__opt span{display:block;text-align:center;padding:10px 8px;border:1px solid rgba(20,24,28,.18);
     font-size:13.5px;color:var(--ink-soft);cursor:pointer;transition:all .25s;letter-spacing:.04em;}
.form__opt input:checked + span{background:var(--brand);border-color:var(--brand);color:#fff;}
.alert{padding:14px 18px;font-size:14px;margin:0 0 22px;border:1px solid;}
.alert--ok{border-color:rgba(102,204,0,.45);background:rgba(102,204,0,.08);color:#3a6d00;}
.alert--err{border-color:rgba(200,40,40,.35);background:rgba(200,40,40,.06);color:#9b2020;}

/* ---------------- 页脚 ---------------- */
.foot{background:#ffffff;color:var(--ink-soft);padding:clamp(46px,7vh,72px) 0 26px;border-top:1px solid var(--rule);}
.foot__grid{max-width:var(--wide);margin:0 auto;padding:0 clamp(20px,5vw,40px);
     display:grid;gap:clamp(26px,4vw,48px);grid-template-columns:1fr;}
@media(min-width:760px){.foot__grid{grid-template-columns:1.4fr .8fr .8fr 1fr;}}
.foot__brand img{height:20px;width:auto;}
.foot__brand p{margin:14px 0 0;font-size:13.5px;line-height:1.9;color:var(--muted);max-width:22em;}
.foot h4{margin:0 0 14px;font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;
     color:var(--muted);font-weight:500;}
.foot a,.foot p{display:block;font-size:14px;color:var(--ink-soft);margin:0 0 10px;}
.foot a:hover{color:var(--brand);}
.foot__legal{max-width:var(--wide);margin:clamp(32px,5vh,50px) auto 0;padding:20px clamp(20px,5vw,40px) 0;
     border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:12px;
     justify-content:space-between;font-size:12px;color:var(--muted);letter-spacing:.04em;}
.foot__legal a{display:inline;color:inherit;font-size:12px;margin:0;}
.foot__legal a:hover{color:var(--brand);}

/* ---------------- 关于页专属 ---------------- */
.duo{max-width:var(--wide);margin:clamp(40px,7vh,76px) auto;padding:0 clamp(20px,5vw,26px);
     display:grid;gap:clamp(22px,4vw,54px);grid-template-columns:1fr;align-items:center;}
@media(min-width:860px){.duo{grid-template-columns:.92fr 1.08fr;}}
.duo__img{position:relative;background:#fff;overflow:hidden;aspect-ratio:4/3;}
@media(min-width:860px){.duo__img{aspect-ratio:3/4;}}
.duo__img img{width:100%;height:100%;object-fit:contain;}
.duo__cap{margin-top:8px;font-size:12.5px;letter-spacing:.06em;color:var(--muted);}
.duo__years{font-family:var(--serif);font-weight:600;color:var(--ink);
     font-size:clamp(22px,2.6vw,30px);letter-spacing:.06em;line-height:1.3;}
.duo__years span{display:block;margin-top:8px;font-family:var(--sans);font-size:12.5px;
     font-weight:400;letter-spacing:.18em;color:var(--muted);}
.duo blockquote{margin:clamp(22px,3.4vh,30px) 0 0;font-family:var(--serif);
     font-size:clamp(20px,2.4vw,26px);line-height:1.8;color:var(--ink);
     position:relative;padding-top:clamp(22px,3vh,28px);}
.duo blockquote::before{content:"";position:absolute;top:0;left:0;width:52px;height:2px;
     background:var(--brand);opacity:.5;}
.duo blockquote footer{margin-top:clamp(18px,3vh,26px);font-family:var(--sans);font-size:13px;
     letter-spacing:.14em;color:var(--muted);}
.vlist{max-width:var(--read);margin:0 auto;padding:0 clamp(20px,5vw,26px);}
.vrow{display:grid;grid-template-columns:52px 1fr;gap:clamp(14px,3vw,34px);
     padding:clamp(22px,3.6vh,32px) 0;border-top:1px solid var(--rule);align-items:start;}
.vrow:last-child{border-bottom:1px solid var(--rule);}
.vrow__num{font-family:var(--serif);font-size:13.5px;font-weight:600;color:var(--brand);padding-top:.55em;}
.vrow h3{margin:0 0 7px;font-family:var(--serif);font-size:clamp(20px,2.3vw,25px);font-weight:600;}
.vrow p{margin:0;color:var(--ink-soft);font-size:15.5px;line-height:1.95;max-width:44em;}

/* ---------------- 首屏：排版型（关于页 · 白底） ---------------- */
.plainhero{padding-top:calc(var(--nav-h) + clamp(56px,10vh,120px));padding-bottom:clamp(34px,5vh,54px);
     background:#fff;}
.plainhero__grid{display:grid;gap:clamp(24px,4vw,54px);grid-template-columns:1fr;align-items:center;}
@media(min-width:900px){.plainhero__grid{grid-template-columns:1.04fr .96fr;}}
.plainhero__media{background:#fff;border:0;overflow:hidden;aspect-ratio:5/4;}
.plainhero__media img{width:100%;height:100%;object-fit:contain;}
.plainhero h1{margin:0;font-family:var(--serif);font-weight:600;color:var(--ink);
     font-size:clamp(32px,4.8vw,60px);line-height:1.3;letter-spacing:.01em;max-width:16em;}
.plainhero__sub{margin:clamp(16px,2.4vh,24px) 0 0;font-size:clamp(15px,1.5vw,18px);
     color:var(--ink-soft);line-height:1.9;max-width:34em;}
.plainhero__meta{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(18px,3vw,40px);
     margin-top:clamp(30px,5vh,52px);padding-top:clamp(20px,3vh,28px);
     border-top:1px solid var(--rule);max-width:820px;}
@media(min-width:720px){.plainhero__meta{grid-template-columns:repeat(4,1fr);}}
.plainhero__meta b{display:block;font-family:var(--serif);font-weight:600;color:var(--ink);
     font-size:clamp(24px,2.8vw,34px);line-height:1.14;}
.plainhero__meta span{display:block;margin-top:8px;font-size:12.5px;letter-spacing:.16em;color:var(--muted);}

/* ---------- GEO：答案前置块 / FAQ ---------- */
.answer-box{margin:clamp(18px,2.6vh,24px) 0 0;padding:16px 18px;background:#f6f7f9;
  border-left:2px solid var(--brand);}
.answer-box__label{margin:0 0 6px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--brand);}
.answer-box p:last-child{margin:0;font-size:15px;line-height:1.85;color:var(--ink-soft);}
.faq{border-top:1px solid var(--rule);}
.faq__item{border-bottom:1px solid var(--rule);padding:16px 0;}
.faq__item summary{cursor:pointer;font-family:var(--serif);font-size:17px;font-weight:600;
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:baseline;}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";color:var(--brand);font-weight:400;flex:none;}
.faq__item[open] summary::after{content:"–";}
.faq__item p{margin:12px 0 0;color:var(--ink-soft);font-size:15px;line-height:1.9;}

.facts{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:6px;}
.facts li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-soft);}
.facts li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;background:var(--brand);border-radius:50%;}

/* 图片不被 width/height 属性拉伸 */
img[width][height]{height:auto;}
.stage__media img[width][height],.duo__img img[width][height],.pcard__img img[width][height],
.pd__main img[width][height],.pd__thumb img[width][height],.plainhero__media img[width][height]{height:100%;}
.stage__media img[width][height]{height:auto;}
.pcard__img img{height:100%;} .pd__main img{height:100%;} .plainhero__media img{height:100%;}

/* 表单下拉（省市）—— 与下划线输入框同语言，但箭头/间距/空值态更清晰 */
.select{position:relative;display:block;}
.select::after{content:"";position:absolute;right:8px;top:calc(50% - 2px);width:8px;height:8px;
  border-right:1.6px solid var(--ink-soft);border-bottom:1.6px solid var(--ink-soft);
  transform:translateY(-50%) rotate(45deg);pointer-events:none;transition:transform .25s,border-color .25s;}
.select:focus-within::after{border-color:var(--brand);transform:translateY(-20%) rotate(45deg);}
.form select{display:block;width:100%;padding:12px 30px 12px 0;border:0;
  border-bottom:1px solid rgba(20,24,28,.22);background:transparent;border-radius:0;
  font-family:inherit;font-size:16px;line-height:1.5;color:var(--ink);cursor:pointer;
  appearance:none;-webkit-appearance:none;-moz-appearance:none;
  transition:border-color .25s,color .25s,background-color .25s;}
.form select:hover{background:rgba(20,24,28,.025);}
.form select:focus{outline:none;border-bottom-color:var(--brand);background:transparent;}
.form select.is-empty{color:var(--muted);}
.form select:disabled{color:#aab3ba;cursor:not-allowed;background:#f7f8f9;border-bottom-style:dashed;}
.select:has(select:disabled)::after{border-color:#b9c1c7;}


/* 需求说明占位引导：四行、清晰可读 */
.form textarea::placeholder{color:rgba(20,24,28,.42);line-height:1.9;opacity:1;}
.form textarea::-webkit-input-placeholder{color:rgba(20,24,28,.42);line-height:1.9;}
.form textarea{min-height:118px;}