/* 智算体™ · GeeTone 设计系统（亮/暗主题，默认亮色） */
:root{
  --ink:#0A1A33; --ink-2:#0E254A; --ink-3:#13315C;
  --warm:#FF8A4C; --warm-2:#FFB37A; --warm-soft:rgba(255,138,76,.14);
  --paper:#F7F9FC; --ink-text:#0C1B30; --muted:#5A6B82; --line:#ECF0F6; --white:#fff;
  --muted-light:rgba(255,255,255,.72); --navy-line:rgba(255,255,255,.10);
  --radius:18px; --radius-sm:12px; --maxw:1120px;
  --shadow:0 18px 50px -20px rgba(10,26,51,.28); --shadow-sm:0 8px 26px -14px rgba(10,26,51,.30);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --header-bg:rgba(255,255,255,.82); --header-bd:#E6ECF4; --menu-bg:#ffffff;
  --brand-text:#0A1A33; --brand-sub:#8595AB;
  --nav-link:#46566F; --nav-link-on:#0A1A33; --nav-ham:#0A1A33;
  --drop-bg:#ffffff; --drop-bd:#E6ECF4; --accent-tag:#B0481F;
  --hero-bg:radial-gradient(1100px 600px at 78% -10%,rgba(255,138,76,.16),transparent 55%),linear-gradient(160deg,#E9F1FB 0%,#F7F9FC 55%,#FFF1E8 100%);
  --hero-text:#0A1A33; --hero-sub:#46566F;
  --phero-bg:radial-gradient(800px 420px at 82% -20%,rgba(255,138,76,.14),transparent 55%),linear-gradient(160deg,#E9F1FB,#F3F8FD);
  --phero-text:#0A1A33; --phero-sub:#46566F;
  --feat-bg:linear-gradient(180deg,#EDF3FB,#F4F8FD); --feat-text:#0A1A33; --feat-sub:#5A6B82;
  --scard-bg:#ffffff; --scard-bd:#E6ECF4; --scard-h:#0A1A33; --scard-p:#5A6B82;
  --chip-bg:#ffffff; --chip-bd:#E2E8F1; --chip-text:#143055;
  --tint-bg:linear-gradient(180deg,#FFFFFF,#EEF2F8);
  --ripple-a:rgba(255,138,76,.28); --ripple-b:rgba(10,26,51,.06); --mark-ring:transparent;
}
[data-theme="dark"]{
  --header-bg:rgba(10,26,51,.82); --header-bd:rgba(255,255,255,.10); --menu-bg:rgba(10,26,51,.98);
  --brand-text:#ffffff; --brand-sub:rgba(255,255,255,.72);
  --nav-link:rgba(255,255,255,.72); --nav-link-on:#ffffff; --nav-ham:#ffffff;
  --drop-bg:#0E254A; --drop-bd:rgba(255,255,255,.12); --accent-tag:#FFB37A;
  --hero-bg:radial-gradient(1100px 600px at 75% -10%,rgba(255,138,76,.18),transparent 55%),linear-gradient(160deg,#0A1A33 0%,#0B2349 55%,#0A1A33 100%);
  --hero-text:#ffffff; --hero-sub:rgba(255,255,255,.72);
  --phero-bg:radial-gradient(800px 420px at 80% -20%,rgba(255,138,76,.16),transparent 55%),linear-gradient(160deg,#0A1A33,#0E254A);
  --phero-text:#ffffff; --phero-sub:rgba(255,255,255,.72);
  --feat-bg:#0A1A33; --feat-text:#ffffff; --feat-sub:rgba(255,255,255,.72);
  --scard-bg:linear-gradient(160deg,#13315C,#0E254A); --scard-bd:rgba(255,255,255,.10); --scard-h:#ffffff; --scard-p:rgba(255,255,255,.72);
  --chip-bg:linear-gradient(160deg,#13315C,#0E254A); --chip-bd:rgba(255,255,255,.10); --chip-text:#ffffff;
  --tint-bg:linear-gradient(180deg,#0B1D3A,#0A1A33);
  --ripple-a:rgba(255,138,76,.35); --ripple-b:rgba(255,255,255,.12); --mark-ring:rgba(255,255,255,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink-text);background:var(--paper);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
section{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--warm);margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--warm);border-radius:2px}
h2.title{font-size:clamp(26px,4.4vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.01em;color:var(--ink);margin-bottom:14px}
.lead{font-size:clamp(15px,2.2vw,18px);color:var(--muted);max-width:660px}
.section-pad{padding:clamp(64px,9vw,108px) 0}
.center{text-align:center}.center .eyebrow{justify-content:center}.center .lead{margin-left:auto;margin-right:auto}
.tint{background:var(--tint-bg)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:none;white-space:nowrap}
.btn-primary{background:var(--warm);color:#3a1500;box-shadow:0 10px 26px -10px rgba(255,138,76,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -10px rgba(255,138,76,.8)}
.btn-ghost{background:rgba(255,138,76,.12);color:var(--accent-tag);border:1px solid rgba(255,138,76,.4)}
.btn-ghost:hover{background:rgba(255,138,76,.2)}
.btn-dark{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
.btn-dark:hover{transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-outline:hover{border-color:var(--warm);color:var(--warm)}
header.nav{position:sticky;top:0;z-index:50;background:var(--header-bg);backdrop-filter:saturate(140%) blur(12px);-webkit-backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--header-bd)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:12px;color:var(--brand-text);font-weight:900;font-size:21px;line-height:1.1;letter-spacing:.02em;font-family:"PingFang SC","Yuanti SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif}
.brand .mark{width:40px;height:40px;flex:0 0 40px;border-radius:11px;box-shadow:0 0 0 1px var(--mark-ring)}
.brand small{display:block;font-size:12px;font-weight:600;color:var(--brand-sub);letter-spacing:.30em;margin-top:3px;text-indent:.30em;font-family:"Helvetica Neue",Arial,"PingFang SC",sans-serif}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--nav-link);font-size:14.5px;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--nav-link-on)}
.nav-cta{padding:9px 18px;font-size:14px;color:#3a1500}
.nav-cta:hover{color:#3a1500}
.nav-item{position:relative;display:flex;align-items:center}
.has-drop::after{content:"";position:absolute;top:100%;left:-10px;right:-10px;height:12px}
.drop-trigger{display:inline-flex;align-items:center;gap:6px;color:var(--nav-link);font-size:14.5px;font-weight:500;cursor:pointer;transition:color .2s}
.drop-trigger.active,.has-drop:hover .drop-trigger{color:var(--nav-link-on)}
.caret{display:inline-block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.65;transition:transform .2s}
.has-drop:hover .caret{transform:rotate(180deg)}
.drop{position:absolute;top:100%;left:50%;transform:translateX(-50%);margin-top:10px;min-width:190px;background:var(--drop-bg);border:1px solid var(--drop-bd);border-radius:14px;padding:8px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:opacity .18s,margin-top .18s;z-index:60}
.has-drop:hover .drop,.has-drop:focus-within .drop{opacity:1;visibility:visible;margin-top:8px}
.drop a{display:block;padding:10px 14px;border-radius:10px;color:var(--nav-link);font-size:14px;font-weight:500;white-space:nowrap}
.drop a:hover{background:var(--warm-soft);color:var(--nav-link-on)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;border:1px solid var(--header-bd);background:transparent;color:var(--nav-link-on);cursor:pointer;font-size:15px;line-height:1;transition:background .2s}
.theme-toggle:hover{background:var(--warm-soft)}
.theme-toggle .ti-sun{display:none}
[data-theme="dark"] .theme-toggle .ti-sun{display:inline}
[data-theme="dark"] .theme-toggle .ti-moon{display:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--nav-ham);border-radius:2px;margin:4px 0;transition:.3s}
.hero{position:relative;overflow:hidden;background:var(--hero-bg);color:var(--hero-text);padding:clamp(70px,11vw,130px) 0 clamp(80px,12vw,140px)}
.ripple-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.ripple-bg svg{position:absolute;top:50%;right:-6%;transform:translateY(-50%);width:min(840px,95vw);opacity:.9}
.ripple-bg circle{fill:none;stroke:var(--ripple-a);transform-origin:center;transform-box:fill-box}
.ripple-bg circle:nth-child(1){animation:pulse 6s ease-out infinite}
.ripple-bg circle:nth-child(2){animation:pulse 6s ease-out infinite .8s}
.ripple-bg circle:nth-child(3){animation:pulse 6s ease-out infinite 1.6s}
.ripple-bg circle:nth-child(4){animation:pulse 6s ease-out infinite 2.4s;stroke:var(--ripple-b)}
.ripple-bg circle:nth-child(5){animation:pulse 6s ease-out infinite 3.2s;stroke:var(--ripple-b)}
@keyframes pulse{0%{transform:scale(.35);opacity:0}25%{opacity:.9}100%{transform:scale(1.25);opacity:0}}
.hero-inner{position:relative;z-index:2;max-width:680px}
.slogan-tag{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;background:var(--warm-soft);border:1px solid rgba(255,138,76,.4);color:var(--accent-tag);font-weight:600;font-size:13.5px;margin-bottom:24px}
.hero h1{font-size:clamp(34px,6.6vw,62px);line-height:1.1;font-weight:850;letter-spacing:-.02em;margin-bottom:22px}
.hero h1 .accent{background:linear-gradient(100deg,var(--warm) 10%,#FF6F3C 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:clamp(16px,2.6vw,20px);color:var(--hero-sub);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:48px;flex-wrap:wrap}
.hero-stats .stat strong{display:block;font-size:clamp(24px,4vw,32px);font-weight:800;color:var(--hero-text)}
.hero-stats .stat span{font-size:13.5px;color:var(--hero-sub)}
.page-hero{position:relative;overflow:hidden;background:var(--phero-bg);color:var(--phero-text);padding:clamp(48px,8vw,86px) 0 clamp(40px,6vw,64px)}
.page-hero h1{font-size:clamp(28px,5vw,46px);font-weight:850;letter-spacing:-.01em;line-height:1.15;margin-bottom:16px;max-width:760px}
.page-hero p{font-size:clamp(15px,2.4vw,19px);color:var(--phero-sub);max-width:620px}
.page-hero .slogan-tag{margin-bottom:18px}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--phero-sub);margin-bottom:20px}
.crumb a{color:var(--phero-sub)}.crumb a:hover{color:var(--phero-text)}
.crumb span{opacity:.5}
.grid{display:grid;gap:20px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ic{width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;background:var(--warm-soft);color:var(--warm);margin-bottom:18px}
.card .ic svg{width:24px;height:24px}
.card h3{font-size:19px;font-weight:750;color:var(--ink);margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.65}
.scenes{background:var(--feat-bg);color:var(--feat-text)}
.scenes h2.title{color:var(--feat-text)}.scenes .lead{color:var(--feat-sub)}
.scene-card{background:var(--scard-bg);border:1px solid var(--scard-bd);border-radius:var(--radius);padding:28px 24px;transition:transform .25s,border-color .25s;box-shadow:var(--shadow-sm)}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(255,138,76,.5)}
.scene-card .num{font-size:13px;font-weight:700;color:var(--warm);letter-spacing:.1em;margin-bottom:14px}
.scene-card h3{font-size:19px;font-weight:750;margin-bottom:8px;color:var(--scard-h)}
.scene-card p{font-size:14.5px;color:var(--scard-p);line-height:1.65}
.scenes .feature-list .fi h4{color:var(--feat-text)}
.scenes .feature-list .fi p{color:var(--feat-sub)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:14px}
.step{position:relative;padding:30px 26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.step .n{width:42px;height:42px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin-bottom:18px}
.step h3{font-size:18px;font-weight:750;color:var(--ink);margin-bottom:7px}
.step p{font-size:14.5px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:42px}
.panel{border-radius:var(--radius);padding:30px 28px;border:1px solid var(--line)}
.panel.bad{background:#FBF1ED}
.panel.good{background:#EEF6F0}
.panel h3{font-size:17px;font-weight:750;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.panel ul{list-style:none}
.panel li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--ink-text);line-height:1.6}
.panel li::before{position:absolute;left:0;top:0;font-weight:800}
.panel.bad li::before{content:"×";color:#C0563B}
.panel.good li::before{content:"✓";color:#2E865F}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 32px;margin-top:36px}
.feature-list .fi{display:flex;gap:14px}
.feature-list .fi .d{width:40px;height:40px;flex:0 0 40px;border-radius:11px;background:var(--warm-soft);color:var(--warm);display:flex;align-items:center;justify-content:center}
.feature-list .fi .d svg{width:20px;height:20px}
.feature-list .fi h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.feature-list .fi p{font-size:14px;color:var(--muted);line-height:1.6}
.faq{margin-top:36px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:22px 4px;font-size:17px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:24px;color:var(--warm);transition:transform .2s;flex:0 0 auto}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 4px 22px;font-size:15px;color:var(--muted);line-height:1.7;max-width:820px}
.prose{max-width:760px;font-size:16.5px;color:#2A3B52;line-height:1.85}
.prose h2{font-size:24px;font-weight:800;color:var(--ink);margin:38px 0 14px}
.prose h3{font-size:19px;font-weight:750;color:var(--ink);margin:28px 0 10px}
.prose p{margin-bottom:16px}
.prose ul{margin:0 0 16px 0;padding-left:22px}
.prose li{margin-bottom:8px}
.prose strong{color:var(--ink)}
.plist{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:42px}
.pcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.pcard .top{padding:30px 26px;background:linear-gradient(160deg,#0E254A,#13315C);color:#fff;position:relative;overflow:hidden}
.pcard .top .tag{font-size:12px;font-weight:700;color:var(--warm-2);letter-spacing:.08em;text-transform:uppercase}
.pcard .top h3{font-size:21px;font-weight:800;margin:8px 0 6px}
.pcard .top p{font-size:13.5px;color:var(--muted-light)}
.pcard .body{padding:24px 26px;flex:1;display:flex;flex-direction:column;gap:12px}
.pcard .body p{font-size:14.5px;color:var(--muted)}
.pcard .body .more{margin-top:auto;color:var(--warm);font-weight:700;font-size:14.5px}
.badge{display:inline-block;font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:999px}
.badge.live{background:var(--warm-soft);color:#C0552B}
.badge.soon{background:#EEF1F6;color:#7A8AA0}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:42px}
.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:10px}
.post .cat{font-size:12px;font-weight:700;color:var(--warm);letter-spacing:.06em}
.post h3{font-size:17px;font-weight:750;color:var(--ink);line-height:1.4}
.post p{font-size:14px;color:var(--muted);line-height:1.6}
.post .meta{margin-top:auto;font-size:12.5px;color:#9AA8BC}
.empty{margin-top:40px;text-align:center;padding:56px 24px;border:1.5px dashed var(--line);border-radius:var(--radius);background:#fff}
.empty .ic{width:56px;height:56px;border-radius:15px;background:var(--warm-soft);color:var(--warm);display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.empty h3{font-size:19px;font-weight:750;color:var(--ink);margin-bottom:8px}
.empty p{font-size:14.5px;color:var(--muted);max-width:440px;margin:0 auto}
.cta{background:radial-gradient(700px 400px at 20% 0%,rgba(255,138,76,.16),transparent 60%),linear-gradient(160deg,#0A1A33,#0E254A);color:#fff;border-radius:28px;padding:clamp(40px,6vw,64px);display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;box-shadow:var(--shadow)}
.cta h2{font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.25;margin-bottom:14px}
.cta p{color:var(--muted-light);margin-bottom:26px;max-width:420px}
.contact-box{display:flex;flex-direction:column;gap:18px}
.contact-line{display:flex;align-items:center;gap:13px;font-size:15px}
.contact-line .ci{width:42px;height:42px;border-radius:11px;background:rgba(255,255,255,.10);display:flex;align-items:center;justify-content:center;flex:0 0 42px}
.contact-line .ci svg{width:20px;height:20px;color:var(--warm-2)}
.contact-line b{display:block;font-size:11px;font-weight:600;letter-spacing:.1em;color:var(--muted-light);text-transform:uppercase;margin-bottom:2px}
.contact-line span{font-size:19px;font-weight:700;color:#fff;letter-spacing:.01em}
.contact-line span a{color:inherit}
.qr{background:#fff;border-radius:14px;padding:11px;width:124px;text-align:center;color:var(--ink)}
.qr .ph{width:102px;height:102px;border-radius:8px;background:repeating-linear-gradient(45deg,#0A1A33 0 6px,#fff 6px 12px);opacity:.12;margin:0 auto 8px}
.qr img{width:102px;height:102px;border-radius:8px;display:block;object-fit:cover;margin:0 auto 8px}
.qr small{font-size:11.5px;color:var(--muted);font-weight:600}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,4vw,40px);box-shadow:var(--shadow-sm);max-width:560px}
.form .row{margin-bottom:18px}
.form label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--radius-sm);font-family:inherit;font-size:15px;color:var(--ink-text);background:#fff;transition:border-color .2s}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--warm)}
.form textarea{min-height:110px;resize:vertical}
.form .note{font-size:12.5px;color:var(--muted);margin-top:14px}
footer{background:#06101F;color:var(--muted-light);padding:54px 0 30px;font-size:14px}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand{max-width:300px}
.foot-brand .brand{margin-bottom:14px;color:#fff}
.foot-brand .brand small{color:rgba(255,255,255,.72)}
.foot-brand .brand .mark{box-shadow:0 0 0 1px rgba(255,255,255,.12)}
.foot-brand p{font-size:13.5px;line-height:1.7;color:var(--muted-light)}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px}
.foot-col a{display:block;color:var(--muted-light);font-size:13.5px;margin-bottom:9px;transition:color .2s}
.foot-col a:hover{color:var(--warm-2)}
.foot-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}
.foot-bottom a{color:rgba(255,255,255,.5)}.foot-bottom a:hover{color:var(--muted-light)}
.foot-brand .slogan-zh{font-size:15px;font-weight:600;color:#fff;margin:2px 0 1px;letter-spacing:.04em}
.foot-brand .slogan-en{font-size:12.5px;color:var(--muted-light);font-style:italic;margin:0 0 12px;letter-spacing:.02em}
.engine-pill{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;background:var(--warm-soft);border:1px solid rgba(255,138,76,.4);color:var(--accent-tag);font-weight:600;font-size:13px;letter-spacing:.02em}
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
.chip{display:inline-flex;align-items:center;padding:11px 20px;border-radius:12px;background:var(--chip-bg);border:1px solid var(--chip-bd);color:var(--chip-text);font-weight:600;font-size:15px;box-shadow:var(--shadow-sm)}
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3,.plist,.posts{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .split,.feature-list{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr}
  .nav-links{position:absolute;top:62px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--menu-bg);border-bottom:1px solid var(--header-bd);padding:8px 22px 18px;display:none;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links>a{padding:14px 0;border-bottom:1px solid var(--header-bd)}
  .nav-item{display:block;width:100%}
  .has-drop::after{display:none}
  .caret{display:none}
  .drop-trigger{width:100%;padding:14px 0;border-bottom:1px solid var(--header-bd)}
  .drop{position:static;transform:none;opacity:1;visibility:visible;margin:0;padding:4px 0 6px 12px;border:0;box-shadow:none;background:transparent;min-width:0}
  .drop a{padding:11px 0}
  .theme-toggle{margin-top:14px;width:auto;padding:0 16px;height:42px;gap:8px}
  .theme-toggle::after{content:"切换深 / 浅色";font-size:14px;font-weight:500}
  .nav-links .nav-cta{margin-top:12px;text-align:center}
  .nav-toggle{display:block}
}
@media (max-width:640px){
  .grid-4,.grid-3,.grid-2,.plist,.posts{grid-template-columns:1fr}
  .hero-stats{gap:24px}
}
@media (prefers-reduced-motion:reduce){
  .ripple-bg circle{animation:none;opacity:.4}*{scroll-behavior:auto}
}
.tm{font-weight:400;font-size:.58em;vertical-align:.42em;letter-spacing:0}
.chip svg{width:18px;height:18px;margin-right:8px;opacity:.9}
.flow{display:flex;align-items:stretch;justify-content:center;gap:8px;margin-top:42px;flex-wrap:wrap;text-align:center}
.flow-step{flex:1 1 0;min-width:168px;max-width:230px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;box-shadow:var(--shadow-sm)}
.flow-step .fic{width:46px;height:46px;margin:0 auto 14px;border-radius:13px;background:var(--warm-soft);color:var(--warm);display:flex;align-items:center;justify-content:center}
.flow-step .fic svg{width:23px;height:23px}
.flow-step h4{font-size:16px;font-weight:750;color:var(--ink);margin-bottom:6px}
.flow-step p{font-size:13px;color:var(--muted);line-height:1.55}
.flow-arrow{display:flex;align-items:center;justify-content:center;color:var(--warm);flex:0 0 auto}
.flow-arrow svg{width:22px;height:22px}
.case .case-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.case-ic{width:52px;height:52px;flex:0 0 52px;border-radius:14px;background:var(--warm-soft);color:var(--warm);display:flex;align-items:center;justify-content:center}
.case-ic svg{width:26px;height:26px}
.case-cat{font-size:12.5px;font-weight:700;color:var(--warm);letter-spacing:.04em;margin-bottom:6px}
@media (max-width:760px){.flow{flex-direction:column;align-items:stretch}.flow-step{max-width:none}.flow-arrow{transform:rotate(90deg);padding:2px 0}}
.foot-brand{max-width:340px}
.foot-brand p{text-wrap:pretty}
/* 修正首页 Hero 配图位置：桌面收进内容区右侧、降透明度；手机隐藏避免压字 */
.ripple-bg{left:50%;right:auto;transform:translateX(-50%);width:100%;max-width:var(--maxw);overflow:visible}
.ripple-bg svg{right:-20px;width:min(480px,42vw);opacity:.5}
@media (max-width:900px){.ripple-bg{display:none}}