/* =====================================================================
   koach — 企业官网样式
   ===================================================================== */

:root{
  --ink:#0E1116;
  --ink-2:#1B2028;
  --text:#1F2329;
  --sub:#5A6169;
  --muted:#8F959E;
  --line:#E5E7EB;
  --line-soft:#EFF1F4;
  --paper:#FFFFFF;
  --soft:#F6F7F9;

  --l1:#1F8C39;      --l1-mid:#8EE085;  --l1-soft:#EAF8E7;
  --l2:#0B8E7A;      --l2-mid:#64E8D6;  --l2-soft:#E1F7F3;
  --l3:#6F42E0;      --l3-mid:#C8A8FF;  --l3-soft:#F2EBFF;

  --radius:14px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 28px rgba(16,24,40,.06);
  --shadow-lg:0 2px 6px rgba(16,24,40,.05), 0 24px 60px rgba(16,24,40,.10);
  --nav-h:68px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",
         -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px);}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--paper);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--l2);outline-offset:3px;border-radius:6px;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;}

.container{width:min(1200px,calc(100% - 48px));margin-inline:auto;}
.only-mobile{display:none;}
.visually-hidden{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------------------------------------------------------- 通用区块 */
.section{padding:104px 0;position:relative;}
.section--soft{background:var(--soft);}
.section--dark{background:var(--ink);color:#fff;}

.sec-head{max-width:760px;margin-bottom:56px;}
.sec-head--sm{margin-top:88px;margin-bottom:40px;}
.sec-head--row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:40px;}
.sec-head--row > div:first-child{max-width:760px;}
.sec-head--wide{max-width:960px;}
/* 只在宽屏手动断行，避免「没专业度」被折断 */
.br-wide{display:none;}
@media (min-width:901px){.br-wide{display:inline;}}
.sec-head h2{font-size:clamp(26px,3.1vw,38px);margin-bottom:16px;}
.sec-head h3{font-size:clamp(21px,2.2vw,27px);margin-bottom:12px;}
.sec-lead{color:var(--sub);font-size:16.5px;line-height:1.8;}
.sec-head--invert .sec-lead{color:rgba(255,255,255,.68);}

.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.10em;
  color:var(--sub);margin-bottom:18px;text-transform:uppercase;
}
.kicker::before{content:"";width:20px;height:2px;background:currentColor;border-radius:2px;}
.kicker--l1{color:var(--l1);}
.kicker--l2{color:var(--l2);}
.kicker--l3{color:var(--l3);}
.kicker--invert{color:var(--l1-mid);}

.grid{display:grid;gap:20px;}
.grid--4{grid-template-columns:repeat(4,1fr);}

/* ---------------------------------------------------------- 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-size:14.5px;font-weight:600;
  transition:transform .2s var(--ease), background .2s var(--ease),
             color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn--primary{background:var(--ink);color:#fff;box-shadow:0 6px 20px rgba(14,17,22,.22);}
.btn--primary:hover{background:#000;box-shadow:0 10px 28px rgba(14,17,22,.30);}
.btn--line{border:1px solid rgba(255,255,255,.28);color:#fff;}
.btn--line:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn--ghost{border:1px solid var(--line);color:var(--text);padding:10px 20px;}
.btn--ghost:hover{border-color:var(--ink);background:var(--ink);color:#fff;}
.btn--block{width:100%;}

/* ---------------------------------------------------------- 导航 */
.nav{
  position:fixed;inset:0 0 auto 0;height:var(--nav-h);z-index:100;
  transition:background .3s var(--ease), box-shadow .3s var(--ease),
             border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav__inner{
  width:min(1200px,calc(100% - 48px));margin-inline:auto;height:100%;
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:9px;font-size:20px;letter-spacing:-.02em;flex-shrink:0;}
.nav .brand{color:#fff;transition:color .3s var(--ease);}
.brand__text{font-weight:700;}
.brand__mark{width:25px;height:25px;flex-shrink:0;display:block;}
.nav__links{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:14.5px;}
.nav__links > a,.navitem__btn{
  color:rgba(255,255,255,.72);transition:color .2s var(--ease);position:relative;padding:4px 0;
}
.nav__links > a:hover,.navitem__btn:hover{color:#fff;}
.nav__links > a.is-current,.navitem__btn.is-current{color:#fff;}
.nav__links > a.is-current::after,.navitem__btn.is-current::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--l1-mid),var(--l2-mid));
}

/* 产品能力下拉 */
.navitem{position:relative;}
.navitem__btn{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;}
.navitem__caret{width:9px;height:6px;transition:transform .25s var(--ease);}
.navitem__btn[aria-expanded="true"] .navitem__caret{transform:rotate(180deg);}
.navmenu{
  position:absolute;top:calc(100% + 16px);left:50%;width:330px;padding:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translate(-50%,-8px);
  transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.navitem.is-open .navmenu{opacity:1;visibility:visible;transform:translate(-50%,0);}
/* 悬停时鼠标要能安全穿过按钮与面板之间的空隙 */
.navmenu::before{content:"";position:absolute;left:0;right:0;top:-18px;height:18px;}
.navmenu a{
  display:flex;gap:12px;align-items:flex-start;padding:11px 12px;border-radius:10px;
  color:var(--text);transition:background .2s var(--ease);
}
.navmenu a:hover{background:var(--soft);}
.navmenu a b{display:block;font-size:14.5px;font-weight:600;}
.navmenu a em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);
  line-height:1.6;margin-top:2px;}
.navmenu__tag{
  flex-shrink:0;min-width:34px;height:22px;padding:0 7px;border-radius:6px;margin-top:2px;
  display:grid;place-items:center;font-size:11px;font-weight:700;letter-spacing:.02em;
}
.navmenu__tag--all{background:var(--soft);color:var(--sub);}
.navmenu__tag--l1{background:var(--l1-soft);color:var(--l1);}
.navmenu__tag--l2{background:var(--l2-soft);color:var(--l2);}
.navmenu__tag--l3{background:var(--l3-soft);color:var(--l3);}
.nav__actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav .btn--ghost{border-color:rgba(255,255,255,.3);color:#fff;}
.nav .btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}

.nav.is-stuck{background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(16px);
  border-bottom-color:var(--line);box-shadow:0 1px 16px rgba(16,24,40,.05);}
.nav.is-stuck .nav__links > a,.nav.is-stuck .navitem__btn{color:var(--sub);}
.nav.is-stuck .nav__links > a:hover,.nav.is-stuck .navitem__btn:hover,
.nav.is-stuck .nav__links > a.is-current,.nav.is-stuck .navitem__btn.is-current{color:var(--text);}
.nav.is-stuck .brand{color:var(--text);}
.nav.is-stuck .btn--ghost{border-color:var(--line);color:var(--text);}
.nav.is-stuck .btn--ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}

.nav__toggle{display:none;width:40px;height:40px;border-radius:10px;position:relative;}
.nav__toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:currentColor;
  transition:transform .25s var(--ease), opacity .2s var(--ease);
}
.nav__toggle span:nth-child(1){top:14px;}
.nav__toggle span:nth-child(2){top:19px;}
.nav__toggle span:nth-child(3){top:24px;}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------------------------------------------------------- Hero */
/* 底部要给 .logowall--hero 让位，logo 条是绝对定位的，不占流内高度 */
.hero{
  position:relative;min-height:min(88vh,830px);display:flex;align-items:center;
  background:var(--ink);color:#fff;overflow:hidden;padding:calc(var(--nav-h) + 60px) 0 172px;
}
.hero__bg{
  position:absolute;inset:0;background-size:cover;background-position:60% center;
  opacity:.85;transform:scale(1.02);
}
.hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(14,17,22,.97) 0%, rgba(14,17,22,.88) 34%,
                            rgba(14,17,22,.42) 62%, rgba(14,17,22,.30) 100%),
    linear-gradient(to top, rgba(14,17,22,.85) 0%, rgba(14,17,22,0) 42%);
}
.hero__inner{position:relative;z-index:2;}
.hero__eyebrow{
  font-size:12.5px;font-weight:700;letter-spacing:.28em;color:var(--l1-mid);margin-bottom:26px;
}
.hero__title{
  font-size:clamp(34px,5.4vw,64px);line-height:1.2;letter-spacing:-.02em;margin-bottom:26px;
}
.hero__title em{font-style:normal;
  background:linear-gradient(90deg,var(--l1-mid),var(--l2-mid) 55%,var(--l3-mid));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__lead{
  max-width:600px;color:rgba(255,255,255,.74);font-size:17px;line-height:1.85;margin-bottom:38px;
}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px;}
.hero__cta .btn--primary{background:#fff;color:var(--ink);}
.hero__cta .btn--primary:hover{background:var(--l1-mid);}

.hero__chips{display:flex;gap:12px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;gap:9px;padding:9px 18px;border-radius:999px;
  font-size:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.86);backdrop-filter:blur(6px);
}
.chip b{font-weight:700;font-size:12.5px;letter-spacing:.06em;}
.chip--l1 b{color:var(--l1-mid);}
.chip--l2 b{color:var(--l2-mid);}
.chip--l3 b{color:var(--l3-mid);}

/* 矮屏（笔记本常见的 1440×700 一类）：首屏内容原样放不下，
   压缩纵向节奏，保证底部的 logo 条仍在第一屏内 */
@media (min-width:681px) and (max-height:800px){
  .hero{padding:calc(var(--nav-h) + 32px) 0 148px;}
  .hero__eyebrow{margin-bottom:17px;}
  .hero__title{font-size:clamp(30px,4.3vw,48px);margin-bottom:17px;}
  .hero__lead{font-size:16px;line-height:1.72;margin-bottom:26px;}
  .hero__cta{margin-bottom:30px;}
  .logowall--hero{padding:16px 0 18px;}
  .logowall--hero .logowall__label{margin-bottom:12px;}
  .logowall--hero .logowall__ico{--s:21px;}
  .logowall--hero .logowall__item span{font-size:16px;}
}

/* ---------------------------------------------------------- 数据条 */
.stats{padding:64px 0 60px;border-bottom:1px solid var(--line);}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{padding-left:20px;border-left:3px solid var(--line);}
.stat:nth-child(1){border-left-color:var(--l3);}
.stat:nth-child(2){border-left-color:var(--l2);}
.stat:nth-child(3){border-left-color:var(--l1);}
.stat:nth-child(4){border-left-color:var(--l2);}
.stat__num{font-size:clamp(30px,3.4vw,42px);font-weight:700;letter-spacing:-.02em;line-height:1.1;}
.stat__num i{font-style:normal;font-size:.5em;font-weight:600;margin-left:4px;color:var(--sub);}
.stat__label{color:var(--sub);font-size:14px;margin-top:8px;}
.stats__note{margin-top:34px;font-size:12.5px;color:var(--muted);}

/* ---------------------------------------------------------- 三道墙 */
.walls{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.wall{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 32px 28px;display:flex;flex-direction:column;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.wall:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent;}
.wall__head{margin-bottom:14px;}
.wall__no{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);
  margin-bottom:10px;
}
.wall__head h3{font-size:20px;}
.wall > p{color:var(--sub);font-size:14.5px;line-height:1.85;flex:1;}
.wall__fix{
  display:block;margin-top:26px;padding:16px 18px;border-radius:12px;
  transition:transform .2s var(--ease);
}
.wall__fix:hover{transform:translateX(3px);}
.wall__fix span{display:block;font-size:11.5px;font-weight:700;letter-spacing:.06em;margin-bottom:5px;}
.wall__fix b{font-size:14.5px;color:var(--text);}
.wall__fix--l1{background:var(--l1-soft);}   .wall__fix--l1 span{color:var(--l1);}
.wall__fix--l2{background:var(--l2-soft);}   .wall__fix--l2 span{color:var(--l2);}
.wall__fix--l3{background:var(--l3-soft);}   .wall__fix--l3 span{color:var(--l3);}

/* ---------------------------------------------------------- 能力栈 */
.stack{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center;}
.stack__visual{border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  box-shadow:var(--shadow);}
.stack__visual img{width:100%;}
.stack__list{display:flex;flex-direction:column;gap:14px;}
.slab{
  display:flex;gap:20px;align-items:flex-start;text-align:left;width:100%;
  padding:24px 26px;border-radius:var(--radius);background:var(--paper);
  border:1px solid var(--line);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease),
             background .3s var(--ease), border-color .3s var(--ease);
}
.slab:hover{transform:translateX(4px);box-shadow:var(--shadow);}
.slab__tag{
  flex-shrink:0;width:46px;height:42px;border-radius:10px;color:#fff;font-weight:700;font-size:15px;
  display:grid;place-items:center;letter-spacing:.02em;
}
.slab__body{display:block;}
.slab__body b{display:block;font-size:19px;font-weight:700;margin-bottom:4px;}
.slab__body em{display:block;font-style:normal;font-size:14px;margin-bottom:10px;}
.slab__body small{display:block;font-size:13px;color:var(--muted);line-height:1.7;}
.slab--l1 .slab__tag{background:var(--l1);} .slab--l1 .slab__body em{color:var(--l1);}
.slab--l2 .slab__tag{background:var(--l2);} .slab--l2 .slab__body em{color:var(--l2);}
.slab--l3 .slab__tag{background:var(--l3);} .slab--l3 .slab__body em{color:var(--l3);}
.slab--l1.is-active{background:var(--l1-soft);border-color:transparent;}
.slab--l2.is-active{background:var(--l2-soft);border-color:transparent;}
.slab--l3.is-active{background:var(--l3-soft);border-color:transparent;}
.stack__foot{
  margin-top:44px;padding:22px 28px;border-radius:var(--radius);background:var(--ink);color:#fff;
  font-size:15px;text-align:center;
}

/* ---------------------------------------------------------- 特性卡 */
.fcard{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.fcard__kicker{font-size:11.5px;font-weight:700;letter-spacing:.1em;margin-bottom:12px;}
.fcard h3{font-size:18px;margin-bottom:14px;}
.fcard p{color:var(--sub);font-size:14px;line-height:1.8;}
.fcard p + p{margin-top:10px;}
.fcard p b{color:var(--text);}
.layer--l1 .fcard__kicker{color:var(--l1);}
.layer--l2 .fcard__kicker{color:var(--l2);}
.layer--l3 .fcard__kicker{color:var(--l3);}
.layer--l1 .fcard:hover{border-color:var(--l1-mid);}
.layer--l2 .fcard:hover{border-color:var(--l2-mid);}
.layer--l3 .fcard:hover{border-color:var(--l3-mid);}

/* ---------------------------------------------------------- 表格 */
.table-wrap{margin-top:44px;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--paper);}
.ptable{width:100%;border-collapse:collapse;text-align:left;}
.ptable caption{
  text-align:left;padding:22px 26px 0;font-weight:700;font-size:16px;color:var(--text);
}
.ptable thead th{
  background:var(--l1-soft);color:var(--l1);font-size:13px;font-weight:700;
  padding:14px 26px;border-bottom:1px solid var(--line);
}
.ptable thead tr th:first-child{border-top-left-radius:0;}
.ptable tbody th{font-weight:600;font-size:14.5px;color:var(--text);}
.ptable tbody td{color:var(--sub);font-size:14px;}
.ptable tbody th,.ptable tbody td{padding:18px 26px;border-bottom:1px solid var(--line-soft);vertical-align:top;}
.ptable tbody tr:last-child th,.ptable tbody tr:last-child td{border-bottom:0;}
.ptable tbody tr{transition:background .2s var(--ease);}
.ptable tbody tr:hover{background:var(--soft);}
.ptable caption{margin-bottom:6px;}
.table-wrap .ptable thead{margin-top:14px;}

/* ---------------------------------------------------------- 立场对比 */
.versus{display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch;}
.vs{padding:38px 36px;border-radius:var(--radius-lg);}
.vs__tag{font-size:12px;font-weight:700;letter-spacing:.08em;margin-bottom:12px;}
.vs h3{font-size:clamp(19px,2vw,24px);margin-bottom:22px;}
.vs ul li{
  position:relative;padding-left:22px;font-size:14.5px;line-height:1.75;margin-bottom:14px;
}
.vs ul li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;border-radius:2px;
  background:currentColor;opacity:.45;
}
.vs--them{background:#EEF0F3;color:var(--sub);}
.vs--them .vs__tag{color:var(--muted);}
.vs--them h3{color:var(--text);}
.vs--us{background:var(--l2-soft);color:var(--text);}
.vs--us .vs__tag{color:var(--l2);}
.versus__mid{display:grid;place-items:center;width:74px;}
.versus__mid span{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  background:var(--ink);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;
}
.quote{
  margin:34px 0 0;padding:34px 40px;border-radius:var(--radius-lg);background:var(--ink);
  color:#fff;text-align:center;font-size:clamp(17px,2.1vw,23px);font-weight:700;line-height:1.55;
}

/* ---------------------------------------------------------- 计费条 */
.pricing-band{margin-top:36px;padding:28px 32px;border-radius:var(--radius);}
.pricing-band--l2{background:var(--l2-soft);}
.pricing-band--l3{background:var(--l3-soft);}
.pricing-band__tag{font-size:11.5px;font-weight:700;letter-spacing:.1em;margin-bottom:9px;}
.pricing-band--l2 .pricing-band__tag{color:var(--l2);}
.pricing-band--l3 .pricing-band__tag{color:var(--l3);}
.pricing-band__main{font-size:16px;font-weight:700;margin-bottom:8px;line-height:1.6;}
.pricing-band__note{font-size:13.5px;color:var(--sub);}

/* ---------------------------------------------------------- L3 资产 */
.assets{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start;}
.assets__list{display:flex;flex-direction:column;gap:12px;}
.arow{
  display:flex;align-items:baseline;gap:22px;padding:20px 26px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .25s var(--ease), transform .25s var(--ease);
}
.arow:hover{border-color:var(--l3-mid);transform:translateX(3px);}
.arow b{font-size:21px;color:var(--l3);min-width:118px;letter-spacing:-.01em;}
.arow span{font-size:14px;color:var(--sub);}
.assets__panel{background:var(--l3-soft);border-radius:var(--radius-lg);padding:34px 32px;}
.assets__panel-tag{font-size:12px;font-weight:700;color:var(--l3);letter-spacing:.05em;margin-bottom:22px;}
.assets__panel ul li{font-size:15px;color:var(--sub);padding:14px 0;border-bottom:1px solid rgba(111,66,224,.14);}
.assets__panel ul li:last-child{border-bottom:0;}
.assets__panel ul li b{display:block;font-size:26px;color:var(--text);margin-bottom:2px;letter-spacing:-.01em;}

/* ---------------------------------------------------------- 植入位 */
.slots{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.slot{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.slot:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.slot__img{aspect-ratio:4/3;overflow:hidden;background:var(--soft);}
.slot__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.slot:hover .slot__img img{transform:scale(1.05);}
.slot__img--flat{display:grid;place-items:center;background:var(--ink);padding:22px;}
.slot__body{padding:24px 24px 28px;}
.slot__no{font-size:11.5px;font-weight:700;letter-spacing:.1em;color:var(--l3);margin-bottom:10px;}
.slot__body h3{font-size:17px;margin-bottom:11px;}
.slot__body p{font-size:13.5px;color:var(--sub);line-height:1.8;}

.voicecard{width:100%;color:#fff;}
.voicecard__wave{display:flex;align-items:flex-end;gap:4px;height:34px;margin-bottom:16px;}
.voicecard__wave i{
  flex:1;background:linear-gradient(to top,var(--l3),var(--l3-mid));border-radius:2px;
  animation:wave 1.25s ease-in-out infinite;height:30%;
}
.voicecard__wave i:nth-child(2n){animation-delay:.12s;}
.voicecard__wave i:nth-child(3n){animation-delay:.26s;}
.voicecard__wave i:nth-child(4n){animation-delay:.38s;}
.voicecard__wave i:nth-child(5n){animation-delay:.5s;}
@keyframes wave{0%,100%{height:22%;}50%{height:100%;}}
.voicecard__line{font-size:14px;line-height:1.7;color:rgba(255,255,255,.94);margin-bottom:12px;}
.voicecard__by{font-size:11.5px;color:var(--l3-mid);letter-spacing:.04em;}

/* ---------------------------------------------------------- Tabs */
.tabs__bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;}
.tabs__btn{
  padding:11px 22px;border-radius:999px;font-size:14.5px;font-weight:600;color:var(--sub);
  background:var(--paper);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.tabs__btn:hover{color:var(--text);border-color:var(--muted);}
.tabs__btn.is-active{background:var(--ink);color:#fff;border-color:var(--ink);}

.tabpanel{display:none;grid-template-columns:1.6fr .8fr;gap:40px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:44px 44px;}
.tabpanel.is-active{display:grid;animation:fadeUp .45s var(--ease);}
.tabpanel__who{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:12px;}
.tabpanel__main h3{font-size:clamp(19px,2.1vw,25px);margin-bottom:18px;}
.tabpanel__main p{color:var(--sub);font-size:15px;line-height:1.85;}
.tabpanel__start{margin-top:18px;padding-top:18px;border-top:1px solid var(--line-soft);
  font-size:14.5px !important;}
.tabpanel__start b{color:var(--text);}
.tabpanel__side{background:var(--soft);border-radius:var(--radius);padding:26px 24px;align-self:start;}
.tabpanel__side-tag{font-size:11.5px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:18px;}
.combo{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.combo i{font-style:normal;font-size:12.5px;color:var(--muted);}
.pill{display:inline-block;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;}
.pill--l1{background:var(--l1-soft);color:var(--l1);}
.pill--l2{background:var(--l2-soft);color:var(--l2);}
.pill--l3{background:var(--l3-soft);color:var(--l3);}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

/* ---------------------------------------------------------- 流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step;}
.step{
  position:relative;padding:30px 24px 28px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.step::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  border-radius:var(--radius) var(--radius) 0 0;
}
.step:nth-child(1)::before,.step:nth-child(2)::before{background:var(--l1);}
.step:nth-child(3)::before,.step:nth-child(4)::before{background:var(--l2);}
.step:nth-child(5)::before{background:var(--l3);}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.step__no{font-size:26px;font-weight:700;color:var(--muted);letter-spacing:-.02em;display:block;
  margin-bottom:10px;}
.step h3{font-size:16.5px;margin-bottom:6px;}
.step__dur{font-size:12.5px;font-weight:700;color:var(--muted);margin-bottom:16px;}
.step ul li{position:relative;padding-left:15px;font-size:13.5px;color:var(--sub);
  line-height:1.7;margin-bottom:9px;}
.step ul li::before{content:"";position:absolute;left:0;top:.68em;width:5px;height:5px;
  border-radius:50%;background:var(--line);}
.process__foot{margin-top:36px;padding:22px 28px;background:var(--soft);border-radius:var(--radius);
  font-size:15px;text-align:center;}

/* ---------------------------------------------------------- Why */
.wcard{
  background:var(--ink-2);border:1px solid rgba(255,255,255,.09);border-radius:var(--radius);
  padding:30px 26px;transition:transform .3s var(--ease), border-color .3s var(--ease);
}
.wcard:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.24);}
.wcard__no{font-size:11.5px;font-weight:700;letter-spacing:.1em;color:var(--l1-mid);margin-bottom:12px;}
.wcard h3{font-size:18px;margin-bottom:14px;color:#fff;}
.wcard p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}

/* ---------------------------------------------------------- Contact */
.contact{background:var(--soft);}
.contact__inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
.contact__copy h2{font-size:clamp(24px,2.9vw,34px);margin-bottom:16px;}
.contact__list{margin-top:34px;}
.contact__list li{display:flex;gap:18px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.contact__list li span{color:var(--muted);min-width:44px;}
.contact__list li b{font-weight:600;}

.cform{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 32px;box-shadow:var(--shadow);}
.cform label{display:block;font-size:13px;font-weight:600;color:var(--sub);margin-bottom:18px;}
.cform__row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.cform input,.cform select,.cform textarea{
  width:100%;margin-top:8px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font:inherit;font-size:14.5px;font-weight:400;color:var(--text);background:var(--paper);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.cform textarea{resize:vertical;line-height:1.7;}
.cform input:focus,.cform select:focus,.cform textarea:focus{
  outline:none;border-color:var(--l2);box-shadow:0 0 0 3px rgba(11,142,122,.12);
}
.cform input::placeholder,.cform textarea::placeholder{color:#B7BCC3;}
.cform__hint{margin-top:14px;font-size:13.5px;min-height:20px;color:var(--l2);font-weight:600;}
.cform__hint.is-error{color:#D83931;}

/* ---------------------------------------------------------- Footer */
.footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 28px;font-size:14px;}
.footer__top{display:grid;grid-template-columns:1fr 1.25fr;gap:56px;padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.1);}
.footer__brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start;}
.brand--footer{color:#fff;font-size:22px;}
.footer__slogan{color:#fff;font-size:17px;font-weight:600;line-height:1.6;}
.footer__by{font-size:13px;color:rgba(255,255,255,.42);letter-spacing:.02em;}
.footer__nav{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.footer__nav h4{color:#fff;font-size:13px;margin-bottom:16px;letter-spacing:.04em;}
.footer__nav a{display:block;padding:6px 0;font-size:13.5px;transition:color .2s var(--ease);}
.footer__nav a:hover{color:#fff;}

.sources{margin:36px 0 8px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);}
.sources summary{padding:18px 24px;cursor:pointer;color:rgba(255,255,255,.82);font-weight:600;
  list-style:none;display:flex;align-items:center;gap:10px;}
.sources summary::-webkit-details-marker{display:none;}
.sources summary::before{content:"＋";font-size:15px;color:var(--l1-mid);}
.sources[open] summary::before{content:"－";}
.sources__grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;padding:6px 24px 22px;}
.sources__grid b{display:block;color:rgba(255,255,255,.9);font-size:13.5px;margin-bottom:4px;}
.sources__grid span{display:block;color:var(--muted);font-size:12px;margin-bottom:8px;}
.sources__grid p{font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.52);}
.sources__note{padding:0 24px 22px;font-size:12px;line-height:1.8;color:rgba(255,255,255,.42);}

.footer__bar{display:flex;justify-content:space-between;gap:16px 28px;flex-wrap:wrap;
  padding-top:22px;font-size:12.5px;color:rgba(255,255,255,.42);}
.footer__legal,.footer__beian{display:flex;gap:22px;flex-wrap:wrap;}
.footer__legal a,.footer__beian a{transition:color .2s var(--ease);}
.footer__legal a:hover,.footer__beian a:hover{color:#fff;}
.footer__legal a{color:rgba(255,255,255,.62);}
.footer__bar--end{margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);}

/* ---------------------------------------------------------- 客户 Logo 墙 */
.logowall{padding:44px 0 40px;background:var(--paper);border-bottom:1px solid var(--line);}
.logowall__label{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;margin-bottom:26px;text-align:center;
}

/* 首屏内的深色变体：绝对定位贴底，保证任何视口高度下都在第一屏可见 */
.logowall--hero{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:22px 0 26px;background:none;border-bottom:0;
  border-top:1px solid rgba(255,255,255,.10);
}
.logowall--hero .logowall__label{
  color:rgba(255,255,255,.42);margin-bottom:18px;
}
.logowall--hero .logowall__item{color:rgba(255,255,255,.60);}
.logowall--hero .logowall__item:hover{color:#fff;}
.logowall--hero .logowall__item span{font-size:17px;}
.logowall--hero .logowall__ico{--s:23px;}
.logowall--hero .logowall__track{gap:52px;padding-right:52px;}
.logowall__strip{
  display:flex;overflow:hidden;user-select:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
}
.logowall__track{
  display:flex;flex-shrink:0;align-items:center;gap:56px;padding-right:56px;
  animation:marquee 56s linear infinite;
}
.logowall__strip:hover .logowall__track,
.logowall__strip:focus-within .logowall__track{animation-play-state:paused;}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-100%);}}
.logowall__item{
  flex-shrink:0;display:flex;align-items:center;gap:11px;
  color:#A9B0B9;white-space:nowrap;transition:color .3s var(--ease);
}
/* ---- 品牌图标 ----
   用 mask 上色而不是 <img>：<img> 里的 SVG 取不到外部 currentColor，会固定成黑色，
   和旁边的灰色品牌名对不上。
   --logo 必须在本文件里声明：自定义属性中的相对 URL 在「使用处」解析，
   写在 HTML 的 style 属性里会被按本文件所在目录再拼一次。

   各 logo 的宽高比差异很大（Nike 是扁的、Garmin 是一行字），统一放进方框会让文字型
   logo 小到看不清。--lw/--lh 按「视觉面积相等」归一化，用法处只需给一个基准尺寸 --s。 */
.brandico{
  flex-shrink:0;background:currentColor;
  width:calc(var(--s) * var(--lw,1));
  height:calc(var(--s) * var(--lh,1));
  -webkit-mask:var(--logo) center/contain no-repeat;
          mask:var(--logo) center/contain no-repeat;
}
.logo--adidas      {--logo:url("../img/clients/adidas.svg");--lw:1.262;--lh:0.792;}
.logo--anta        {--logo:url("../img/clients/anta.svg");--lw:1.36;--lh:0.735;}
.logo--garmin      {--logo:url("../img/clients/garmin.svg");--lw:1.92;--lh:0.521;}
.logo--guiji       {--logo:url("../img/clients/guiji.svg");--lw:0.918;--lh:1.09;}
.logo--huawei      {--logo:url("../img/clients/huawei.svg");--lw:1.152;--lh:0.868;}
.logo--lining      {--logo:url("../img/clients/lining.svg");--lw:1.941;--lh:0.515;}
.logo--newbalance  {--logo:url("../img/clients/newbalance.svg");--lw:1.442;--lh:0.693;}
.logo--nike        {--logo:url("../img/clients/nike.svg");--lw:1.69;--lh:0.592;}
.logo--puma        {--logo:url("../img/clients/puma.svg");--lw:1.139;--lh:0.878;}
.logo--strava      {--logo:url("../img/clients/strava.svg");--lw:0.818;--lh:1.15;}
.logo--tnf         {--logo:url("../img/clients/thenorthface.svg");--lw:1.459;--lh:0.686;}
.logo--underarmour {--logo:url("../img/clients/underarmour.svg");--lw:1.303;--lh:0.767;}
.logo--xiaomi      {--logo:url("../img/clients/xiaomi.svg");--lw:1.0;--lh:1.0;}

.logowall__ico{--s:25px;}
.logowall__item span{font-size:18.5px;font-weight:700;letter-spacing:.01em;}
.logowall__item:hover{color:var(--text);}

/* ---------------------------------------------------------- 客户案例 */
.cases__nav{display:flex;gap:10px;flex-shrink:0;padding-bottom:4px;}
.cbtn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text);background:var(--paper);
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.cbtn svg{width:16px;height:16px;}
.cbtn:hover{background:var(--ink);color:#fff;border-color:var(--ink);}

.carousel__viewport{overflow:hidden;border-radius:var(--radius-lg);}
.carousel__track{display:flex;transition:transform .55s var(--ease);}
.carousel:focus-visible{outline:2px solid var(--l2);outline-offset:6px;border-radius:var(--radius-lg);}

.case{
  flex:0 0 100%;display:grid;grid-template-columns:1.62fr .78fr;gap:44px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:44px 46px;align-items:start;
}
.case__meta{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap;}
.case__industry{
  font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--l2);
  background:var(--l2-soft);padding:6px 12px;border-radius:999px;
}
.case__client{
  display:inline-flex;align-items:center;gap:9px;
  font-size:16px;font-weight:700;color:var(--text);letter-spacing:.02em;
}
.case__logo{--s:21px;}
.case__main > h3{font-size:clamp(20px,2.3vw,27px);margin-bottom:22px;}
.case__story p{color:var(--sub);font-size:14.5px;line-height:1.85;}
.case__story p + p{margin-top:10px;}
.case__story b{color:var(--text);font-weight:600;}

.case__metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin:28px 0;padding:24px 0;border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.case__metrics b{
  display:block;font-size:clamp(24px,2.8vw,33px);font-weight:700;letter-spacing:-.02em;
  line-height:1.1;margin-bottom:7px;
}
.case__metrics div:nth-child(1) b{color:var(--l3);}
.case__metrics div:nth-child(2) b{color:var(--l2);}
.case__metrics div:nth-child(3) b{color:var(--l1);}
.case__metrics span{font-size:13px;color:var(--sub);line-height:1.6;}

.case__quote{margin:0;padding-left:20px;border-left:3px solid var(--line);}
.case__quote p{font-size:15.5px;line-height:1.85;color:var(--text);font-weight:600;}
.case__quote footer{margin-top:10px;font-size:13px;color:var(--muted);font-weight:400;}

.case__side{background:var(--soft);border-radius:var(--radius);padding:26px 24px;}
.case__side-tag{font-size:11.5px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:18px;}
.case__facts{margin:20px 0 0;padding-top:18px;border-top:1px solid var(--line);}
.case__facts > div{display:flex;justify-content:space-between;gap:14px;padding:7px 0;}
.case__facts dt{font-size:13px;color:var(--muted);}
.case__facts dd{margin:0;font-size:13.5px;font-weight:600;color:var(--text);}

.carousel__foot{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:26px;}
.carousel__dots{display:flex;gap:9px;}
.carousel__dot{
  width:30px;height:5px;border-radius:3px;background:var(--line);
  transition:background .25s var(--ease), width .25s var(--ease);
}
.carousel__dot:hover{background:var(--muted);}
.carousel__dot.is-active{width:48px;background:var(--ink);}
.carousel__play{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted);
  transition:color .2s var(--ease);
}
.carousel__play:hover{color:var(--text);}
.carousel__play-ico{
  width:13px;height:13px;border-radius:2px;flex-shrink:0;
  border-left:4px solid currentColor;border-right:4px solid currentColor;
}
.carousel__play[aria-pressed="false"] .carousel__play-ico{
  border:0;width:0;height:0;border-radius:0;
  border-top:6px solid transparent;border-bottom:6px solid transparent;
  border-left:10px solid currentColor;border-right:0;
}
.cases__note{margin-top:34px;font-size:12.5px;color:var(--muted);line-height:1.8;}

/* ---------------------------------------------------------- 页中 CTA 条 */
.ctaband{background:var(--ink);color:#fff;padding:62px 0;}
.ctaband__inner{display:flex;align-items:center;justify-content:space-between;gap:44px;}
.ctaband h2{font-size:clamp(22px,2.6vw,31px);margin-bottom:10px;}
.ctaband p{color:rgba(255,255,255,.66);font-size:15.5px;line-height:1.75;}
.ctaband__actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.ctaband .btn--primary{background:#fff;color:var(--ink);}
.ctaband .btn--primary:hover{background:var(--l1-mid);}

/* ---------------------------------------------------------- 套餐 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start;}
.plan{
  position:relative;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:34px 30px 30px;display:flex;flex-direction:column;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.plan--hot{border-color:var(--ink);box-shadow:var(--shadow);padding-top:44px;}
.plan__badge{
  position:absolute;top:-13px;left:30px;padding:6px 14px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:11.5px;font-weight:700;letter-spacing:.04em;
}
.plan__name{font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:14px;}
.plan__price{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.plan__price b{font-size:25px;font-weight:700;letter-spacing:-.02em;}
.plan__price i{font-style:normal;font-size:13px;color:var(--muted);}
.plan__for{font-size:14px;color:var(--sub);line-height:1.8;padding-bottom:22px;
  border-bottom:1px solid var(--line-soft);}
.plan__list{margin:22px 0 28px;flex:1;}
.plan__list li{position:relative;padding-left:24px;font-size:14px;color:var(--sub);
  line-height:1.7;margin-bottom:13px;}
.plan__list li::before{
  content:"";position:absolute;left:2px;top:.42em;width:11px;height:6px;
  border-left:2px solid var(--l1);border-bottom:2px solid var(--l1);
  transform:rotate(-45deg);border-radius:1px;
}
.plan--hot .plan__list li::before{border-color:var(--l2);}

.pricenote{
  margin-top:32px;padding:28px 32px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);display:grid;grid-template-columns:1.32fr 1fr;gap:40px;align-items:center;
}
.pricenote__tag{font-size:11.5px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:16px;}
.pricenote ul li{display:flex;align-items:center;gap:14px;font-size:14px;color:var(--sub);
  padding:8px 0;flex-wrap:wrap;}
.pricenote ul li .pill{flex-shrink:0;min-width:44px;text-align:center;}
.pricenote__fine{font-size:12.5px;color:var(--muted);line-height:1.85;
  padding-left:36px;border-left:1px solid var(--line);}

/* ---------------------------------------------------------- 安全合规与接入 */
.trust{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:stretch;}
.trust__col{display:flex;flex-direction:column;}
.trust__title{font-size:18px;margin-bottom:24px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.tlist li{padding:18px 0;border-bottom:1px solid var(--line);}
.tlist li:last-child{border-bottom:0;}
.tlist__head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:8px;}
.tlist__head b{font-size:15px;font-weight:600;}
.tlist p{font-size:13.5px;color:var(--sub);line-height:1.8;}
.tag{
  flex-shrink:0;font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.02em;
}
.tag--on{background:var(--l1-soft);color:var(--l1);}
.tag--wip{background:#FFF3E0;color:#B7791F;}

.tgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.tcard{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;
  transition:border-color .25s var(--ease), transform .25s var(--ease);
}
.tcard:hover{border-color:var(--l2-mid);transform:translateY(-3px);}
.tcard b{display:block;font-size:14.5px;margin-bottom:9px;}
.tcard p{font-size:13px;color:var(--sub);line-height:1.75;}
/* 贴住右列底部，与左列的清单底边对齐 */
.trust__sla{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:auto;padding-top:24px;
  padding:24px 26px;background:var(--ink);color:#fff;border-radius:var(--radius);
}
.trust__col > .tgrid{margin-bottom:20px;}
.trust__sla b{display:block;font-size:26px;font-weight:700;letter-spacing:-.02em;
  color:var(--l2-mid);margin-bottom:4px;}
.trust__sla span{font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.6;}

/* ---------------------------------------------------------- FAQ */
.faq{display:grid;grid-template-columns:.78fr 1.22fr;gap:56px;align-items:start;}
.faq__head{position:sticky;top:calc(var(--nav-h) + 40px);}
.faq__link{display:inline-block;margin-top:22px;font-size:14.5px;font-weight:600;color:var(--l2);
  transition:transform .2s var(--ease);}
.faq__link:hover{transform:translateX(3px);}
.qa{border-bottom:1px solid var(--line);}
.qa summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;cursor:pointer;list-style:none;font-size:16.5px;font-weight:600;line-height:1.6;
}
.qa summary::-webkit-details-marker{display:none;}
.qa summary::after{
  content:"";flex-shrink:0;width:13px;height:13px;margin-top:7px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .28s var(--ease);border-radius:1px;
}
.qa[open] summary::after{transform:rotate(-135deg);}
.qa summary:hover{color:var(--l2);}
.qa__body{padding:0 46px 24px 0;}
.qa__body p{font-size:14.5px;color:var(--sub);line-height:1.9;}
.qa__body p + p{margin-top:12px;}
.qa[open] .qa__body{animation:fadeUp .35s var(--ease);}

/* ---------------------------------------------------------- 联系补充 */
.contact__assure{margin-top:28px;}
.contact__assure li{
  position:relative;padding-left:26px;font-size:13.5px;color:var(--sub);line-height:1.7;margin-bottom:11px;
}
.contact__assure li::before{
  content:"";position:absolute;left:2px;top:.36em;width:11px;height:6px;
  border-left:2px solid var(--l2);border-bottom:2px solid var(--l2);
  transform:rotate(-45deg);border-radius:1px;
}
.cform__check{display:flex;gap:10px;align-items:flex-start;font-weight:400 !important;
  font-size:12.5px !important;line-height:1.7;color:var(--muted) !important;margin-bottom:20px !important;}
.cform__check input{width:auto;margin:3px 0 0;flex-shrink:0;accent-color:var(--l2);}
.cform__check a{color:var(--l2);text-decoration:underline;text-underline-offset:2px;}

/* ---------------------------------------------------------- 滚动出现 */
.reveal{opacity:0;transform:translateY(18px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

.docs-jump{margin-top:28px;font-size:15px;font-weight:600;}
.docs-jump a{color:var(--l2);border-bottom:1px solid rgba(11,142,122,.28);}
.docs-jump a:hover{border-bottom-color:var(--l2);}
.layer--l1 .docs-jump a{color:var(--l1);border-bottom-color:rgba(31,140,57,.28);}
.layer--l1 .docs-jump a:hover{border-bottom-color:var(--l1);}

/* ---------------------------------------------------------- 响应式 */
@media (max-width:1180px){
  .nav__links{gap:20px;font-size:14px;}
  .case{grid-template-columns:1.45fr .9fr;gap:32px;padding:38px 34px;}
  .tgrid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:1080px){
  .grid--4,.slots{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(3,1fr);}
  .stack{grid-template-columns:1fr;gap:36px;}
  .stack__visual{max-width:460px;margin-inline:auto;}
  .nav__links{display:none;}
  .nav__toggle{display:block;}
  /* 链接收起后由操作区顶到最右 */
  .nav__actions{margin-left:auto;}

  .trust{grid-template-columns:1fr;gap:44px;}
  .faq{grid-template-columns:1fr;gap:36px;}
  .faq__head{position:static;}
  .plans{grid-template-columns:1fr;max-width:620px;margin-inline:auto;}
  .plan--hot{padding-top:44px;}
}

@media (max-width:900px){
  .section{padding:76px 0;}
  .container{width:calc(100% - 40px);}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .walls{grid-template-columns:1fr;}
  .versus{grid-template-columns:1fr;gap:14px;}
  .versus__mid{width:auto;height:52px;}
  .assets{grid-template-columns:1fr;}
  .tabpanel{grid-template-columns:1fr;gap:28px;padding:32px 26px;}
  .contact__inner{grid-template-columns:1fr;gap:40px;}
  .footer__top{grid-template-columns:1fr;gap:36px;}
  .sources__grid{grid-template-columns:1fr;}

  .sec-head--row{flex-direction:column;align-items:flex-start;gap:22px;}
  .case{grid-template-columns:1fr;gap:28px;padding:32px 26px;}
  .ctaband__inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .pricenote{grid-template-columns:1fr;gap:24px;}
  .pricenote__fine{padding-left:0;padding-top:20px;border-left:0;border-top:1px solid var(--line);}
  .qa__body{padding-right:0;}
}

@media (max-width:680px){
  .only-mobile{display:inline;}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 56px) 0 144px;}
  .hero__bg{background-position:70% center;}
  .hero__cta{margin-bottom:40px;}
  .hero__cta .btn{flex:1;}
  .grid--4,.slots,.steps{grid-template-columns:1fr;}
  .stats__grid{grid-template-columns:1fr;}
  .cform__row{grid-template-columns:1fr;gap:0;}
  .footer__nav{grid-template-columns:1fr 1fr;gap:24px;}
  .table-wrap{overflow-x:auto;}
  .ptable{min-width:600px;}
  .arow{flex-direction:column;gap:4px;}
  .arow b{min-width:0;}

  .logowall{padding:34px 0 30px;}
  .logowall__track{gap:44px;padding-right:44px;}
  .logowall__item span{font-size:16.5px;}
  .logowall--hero{padding:18px 0 20px;}
  .logowall--hero .logowall__label{margin-bottom:14px;}
  .logowall--hero .logowall__ico{--s:21px;}
  .case__metrics{grid-template-columns:1fr;gap:16px;padding:20px 0;margin:22px 0;}
  .case__metrics b{font-size:26px;margin-bottom:2px;}
  .cases__nav{display:none;}
  .tgrid{grid-template-columns:1fr;}
  .trust__sla{grid-template-columns:1fr;gap:16px;}
  .ctaband__actions{width:100%;}
  .ctaband__actions .btn{flex:1;}
  .footer__bar{flex-direction:column;gap:14px;}
  .footer__legal,.footer__beian{gap:16px;}

  /* 移动端展开导航 */
  .nav__links{
    display:flex;position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;
    align-items:stretch;gap:0;background:#fff;padding:8px 24px 20px;
    border-bottom:1px solid var(--line);box-shadow:0 16px 32px rgba(16,24,40,.08);
    max-height:calc(100vh - var(--nav-h));overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .25s var(--ease), transform .25s var(--ease);
  }
  .nav__links.is-open{transform:none;opacity:1;pointer-events:auto;}
  .nav__links > a,.nav.is-stuck .nav__links > a{color:var(--text);padding:13px 0;
    border-bottom:1px solid var(--line-soft);font-size:15px;}
  .nav__links > a.is-current::after{display:none;}

  /* 移动端下拉直接摊开成分组，不再需要点击展开 */
  .navitem__btn{display:none;}
  .navmenu{
    position:static;width:auto;padding:6px 0 10px;transform:none;opacity:1;visibility:visible;
    background:none;border:0;box-shadow:none;border-bottom:1px solid var(--line-soft);
  }
  .navmenu::before{display:none;}
  .navmenu a{padding:11px 0;}
  .navmenu a:hover{background:none;}
  .navmenu a em{display:none;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  /* 跑马灯直接停在起始位置，而不是以极短周期疯狂闪烁 */
  .logowall__track{animation:none;}
  .logowall__strip{overflow-x:auto;}
}