@charset "UTF-8";
/* ==========================================================================
   Shutter Encoder 中文站 — 设计系统
   品牌色取自官方 Logo：红 #D5213E / 橙 #F88D24 / 绿 #34913A / 青 #119CC5
   浅色扁平风格，无外部字体与 CDN 依赖
   ========================================================================== */

:root{
  --brand:#D5213E;
  --brand-600:#B01A33;
  --brand-700:#8F1429;
  --brand-050:#FDF1F3;
  --orange:#F88D24;
  --orange-ink:#B45E08;
  --orange-050:#FFF4E8;
  --green:#34913A;
  --green-050:#EFF7EF;
  --cyan:#119CC5;
  --cyan-ink:#0B7699;
  --cyan-050:#ECF7FB;

  --ink:#141619;
  --ink-2:#343A42;
  --muted:#5A616B;
  --muted-2:#6B727D;
  --line:#E4E7EB;
  --line-2:#D3D8DF;
  --bg:#FFFFFF;
  --bg-2:#F7F8FA;
  --bg-3:#F1F3F6;

  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.05);
  --shadow-md:0 10px 28px -8px rgba(16,24,40,.14);
  --shadow-lg:0 30px 80px -24px rgba(16,24,40,.28);

  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --max:1160px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;vertical-align:middle}
h1,h2,h3,h4,p,ul,ol,figure,dl{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.btn-primary:focus-visible{outline-color:#141619}
.cta-band .btn:focus-visible,.site-footer a:focus-visible{outline-color:#FFFFFF}
::selection{background:#F7C9D2;color:#5A0F1C}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:#fff;padding:10px 16px;border-radius:0 0 8px 0;box-shadow:var(--shadow-md)}
.skip-link:focus{left:0}

/* ---------- 图标 ---------- */
.ico-svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ico-svg.solid{fill:currentColor;stroke:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  text-decoration:none;white-space:nowrap;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{text-decoration:none}
.btn .ico-svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(176,26,51,.24)}
.btn-primary:hover{background:var(--brand-600);color:#fff}
.btn-primary:active{background:var(--brand-700)}
.btn-outline{background:#fff;border-color:var(--line-2);color:var(--ink)}
.btn-outline:hover{border-color:#AEB6C1;background:#FCFCFD;color:var(--ink)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff}
.btn-lg{height:52px;padding:0 28px;font-size:16px;border-radius:12px}
.btn-lg .ico-svg{width:20px;height:20px}
.btn-block{width:100%}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.btn-link .ico-svg{width:16px;height:16px;transition:transform .18s ease}
.btn-link:hover .ico-svg{transform:translateX(3px)}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled{box-shadow:0 4px 20px -12px rgba(16,24,40,.28)}
.header-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15.5px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:10.5px;font-weight:600;letter-spacing:.16em;color:var(--muted-2);margin-top:2px}

.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav-link{display:block;padding:9px 13px;border-radius:8px;font-size:15px;color:var(--ink-2);font-weight:500}
.nav-link:hover{background:var(--bg-3);color:var(--ink);text-decoration:none}
.nav-link[aria-current="page"]{color:var(--brand);background:var(--brand-050);font-weight:600}
.header-cta{margin-left:10px;height:40px;padding:0 16px;font-size:14.5px}

.nav-toggle{
  display:none;width:40px;height:40px;margin-left:auto;border:1px solid var(--line-2);
  background:#fff;border-radius:9px;align-items:center;justify-content:center;color:var(--ink-2);
}
.nav-toggle .ico-svg{width:20px;height:20px}
.nav-toggle .close-ico{display:none}
.nav-toggle[aria-expanded="true"] .open-ico{display:none}
.nav-toggle[aria-expanded="true"] .close-ico{display:block}

.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 24px 20px}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:12px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.mobile-nav a[aria-current="page"]{color:var(--brand);font-weight:600}
.mobile-nav .btn{margin-top:16px;width:100%}

/* ---------- 首页 Hero ---------- */
.hero{
  position:relative;padding:64px 0 68px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F8F9FB 100%);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-180px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(213,33,62,.07),rgba(213,33,62,0) 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;position:relative;z-index:1}
.spectrum{display:flex;width:86px;height:4px;border-radius:2px;overflow:hidden;margin-bottom:22px}
.spectrum i{flex:1}
.spectrum i:nth-child(1){background:var(--brand)}
.spectrum i:nth-child(2){background:var(--orange)}
.spectrum i:nth-child(3){background:var(--green)}
.spectrum i:nth-child(4){background:var(--cyan)}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;
  letter-spacing:.14em;color:var(--brand);
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--brand);border-radius:1px}
.nb{white-space:nowrap}
.hero-title{
  font-size:clamp(30px,4.1vw,50px);line-height:1.18;letter-spacing:-.025em;
  font-weight:800;margin-top:16px;text-wrap:balance;
}
.hero-title .accent{color:var(--brand)}
.hero-lede{margin-top:20px;max-width:54ch;font-size:16.5px;line-height:1.9;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;font-size:13px;color:var(--muted)}
.hero-meta li{display:flex;align-items:center;gap:7px}
.hero-meta li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green);flex:none}

/* 应用界面示意 */
.mock-wrap{position:relative}
.mock{
  background:#15171B;border:1px solid #24282F;border-radius:16px;overflow:hidden;
  box-shadow:0 28px 70px -26px rgba(13,18,28,.55);
}
.mock-bar{display:flex;align-items:center;gap:7px;height:36px;padding:0 12px;background:#1A1D22;border-bottom:1px solid #262A31}
.mock-dot{width:8px;height:8px;border-radius:50%;background:#3A404A}
.mock-title{font-size:11px;color:#8B929D;margin-left:6px;letter-spacing:.02em}
.mock-tag{margin-left:auto;font-size:10px;color:#7C838E;border:1px solid #303640;border-radius:4px;padding:1px 6px}
.mock-body{display:grid;grid-template-columns:1fr 1.06fr;gap:1px;background:#262A31}
.mock-pane{background:#15171B;padding:12px 12px 14px;min-height:264px}
.mock-h{font-size:9.5px;font-weight:700;letter-spacing:.16em;color:#6B727D;text-transform:uppercase;margin-bottom:9px}
.file-row{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:6px;background:#1C1F25;border:1px solid #23272E;margin-bottom:6px}
.file-ico{width:14px;height:14px;color:#7F8792;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.file-name{font-size:11px;color:#C6CCD5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-meta{margin-left:auto;font-size:9.5px;color:#6C737E;flex:none}
.mock-add{font-size:10px;color:#6C737E;padding:6px 8px;border:1px dashed #303640;border-radius:6px;text-align:center}
.fn-row{display:flex;align-items:center;justify-content:space-between;padding:5px 8px;border-radius:5px;font-size:10.5px;color:#9AA1AC;margin-bottom:2px}
.fn-row.on{background:#2A1A1F;color:#F4BEC9;box-shadow:inset 2px 0 0 var(--brand)}
.fn-row .mini{font-size:9px;color:#6C737E}
.fn-row.on .mini{color:#C98E9A}
.mock-foot{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#1A1D22;border-top:1px solid #262A31}
.mock-bar-track{flex:1;height:5px;background:#2B3038;border-radius:3px;overflow:hidden}
.mock-bar-track i{display:block;height:100%;width:68%;background:linear-gradient(90deg,var(--brand),var(--orange))}
.mock-pct{font-size:10px;color:#A6ADB8;font-variant-numeric:tabular-nums}
.mock-btn{font-size:10.5px;font-weight:700;color:#fff;background:var(--brand);border-radius:5px;padding:5px 12px}
.mock-caption{margin-top:12px;font-size:12px;color:var(--muted-2);text-align:right}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
}
.stat{padding:22px 22px 20px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--muted)}
.stat.accent b{color:var(--brand)}

/* ---------- 区块 ---------- */
.sec{padding:84px 0}
.sec-tight{padding:60px 0}
.sec-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:740px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-title{font-size:clamp(23px,2.5vw,33px);line-height:1.32;letter-spacing:-.02em;font-weight:800;margin-top:14px;text-wrap:balance}
.sec-lede{margin-top:14px;font-size:16px;line-height:1.88;color:var(--muted)}
.sec-between{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-between .sec-head{margin-bottom:0}

.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* 场景卡 */
.scene{
  position:relative;display:flex;flex-direction:column;height:100%;
  padding:26px 24px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.scene:hover{border-color:#C5CCD6;box-shadow:var(--shadow-md);transform:translateY(-2px)}
.scene-num{font-size:11.5px;font-weight:800;letter-spacing:.14em;color:#B9C0CA;font-variant-numeric:tabular-nums}
.scene h3{margin:10px 0 9px;font-size:17px;font-weight:700;letter-spacing:-.01em}
.scene p:not(.scene-num){font-size:14.5px;line-height:1.85;color:var(--muted);flex:1}
.scene .tags{margin-top:16px}
.scene-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand)}
.scene-link .ico-svg{width:15px;height:15px;transition:transform .18s ease}
.scene-link:hover .ico-svg{transform:translateX(3px)}

/* 优势 */
.adv{display:flex;gap:15px;padding:24px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.adv-body{min-width:0}
.adv h3{font-size:16px;font-weight:700;margin-bottom:7px}
.adv p{font-size:14.2px;line-height:1.82;color:var(--muted)}
.ico{
  width:42px;height:42px;flex:none;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand);
}
.ico .ico-svg{width:22px;height:22px}
.ico.t-orange{background:var(--orange-050);color:var(--orange-ink)}
.ico.t-green{background:var(--green-050);color:var(--green)}
.ico.t-cyan{background:var(--cyan-050);color:var(--cyan-ink)}
.ico.t-ink{background:var(--bg-3);color:var(--ink-2)}

/* 功能概览 */
.fgroup{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.fgroup-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.fgroup-head h3{font-size:15.5px;font-weight:700}
.fgroup ul li{display:flex;gap:9px;padding:8px 0;font-size:14.2px;color:var(--muted);border-bottom:1px dashed var(--line);line-height:1.7}
.fgroup ul li:last-child{border-bottom:0;padding-bottom:0}
.fgroup ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--line-2);flex:none;margin-top:9px}
.fgroup .more{margin-top:14px;font-size:13.5px;font-weight:600}
/* 有序步骤：用编号徽标替代默认列表符号 */
.fgroup ol,article ol{counter-reset:step}
.fgroup ol li,article ol li{counter-increment:step;position:relative;padding-left:30px !important}
.fgroup ol li::before,article ol li::before{
  content:counter(step);position:absolute;left:0;top:7px;width:21px;height:21px;border-radius:6px;
  background:var(--brand-050);color:var(--brand);font-size:11px;font-weight:800;
  display:grid;place-items:center;line-height:1;font-variant-numeric:tabular-nums;
}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tag{
  display:inline-block;font-size:12.5px;line-height:1.5;padding:5px 10px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);white-space:nowrap;
}
.tag.solid{background:var(--bg-3);border-color:transparent;color:var(--ink-2)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.step{padding:26px 22px;border-left:1px solid var(--line)}
.step:first-child{border-left:0}
.step-n{
  width:30px;height:30px;border-radius:9px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step h3{font-size:15.5px;margin:14px 0 7px;font-weight:700}
.step p{font-size:14px;line-height:1.8;color:var(--muted)}

/* 平台卡 */
.plat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;height:100%}
.plat-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.plat-head h3{font-size:16.5px;font-weight:700}
.plat-head .ico{width:36px;height:36px;border-radius:9px}
.plat-head .ico .ico-svg{width:19px;height:19px}
.plat-os{font-size:12.5px;color:var(--muted-2);margin-bottom:14px}
.plat ul{margin-bottom:16px}
.plat ul li{display:flex;align-items:center;gap:8px;font-size:13.8px;color:var(--ink-2);padding:5px 0}
.plat ul li .ico-svg{width:15px;height:15px;color:var(--green);flex:none}
.plat .req{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.75;color:var(--muted)}

/* 表格 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;min-width:620px}
table.data caption{text-align:left;padding:16px 18px 0;font-size:13px;color:var(--muted-2)}
table.data th{
  text-align:left;font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--muted);
  background:var(--bg-2);padding:12px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.data td{padding:13px 18px;border-bottom:1px solid var(--line);font-size:14px;line-height:1.7;vertical-align:top}
table.data th:first-child,table.data td:first-child{word-break:keep-all}
table.data tr:last-child td{border-bottom:0}
table.data td strong{font-weight:700}
.code,code{
  font-family:var(--mono);font-size:12.5px;background:var(--bg-3);color:var(--ink-2);
  padding:2px 6px;border-radius:5px;white-space:nowrap;
}

/* 提示块 */
.note{
  display:flex;gap:12px;border-left:3px solid var(--brand);background:var(--brand-050);
  padding:15px 18px;border-radius:0 10px 10px 0;font-size:14px;line-height:1.85;color:#5E2430;
}
.note .ico-svg{width:19px;height:19px;flex:none;margin-top:2px;color:var(--brand)}
.note.info{border-color:var(--cyan);background:var(--cyan-050);color:#0A4E63}
.note.info .ico-svg{color:var(--cyan-ink)}
.note.neutral{border-color:var(--line-2);background:var(--bg-3);color:var(--ink-2)}
.note.neutral .ico-svg{color:var(--muted)}
.note strong{color:inherit}

/* CTA 深色块 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:#141619;border-radius:18px;padding:38px 40px;color:#fff;
}
.cta-band h2{font-size:clamp(21px,2.2vw,27px);line-height:1.35;letter-spacing:-.015em;font-weight:800}
.cta-band p{margin-top:10px;font-size:14.5px;line-height:1.8;color:#A7AEB8;max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px}
.faq summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 20px;font-size:15.5px;font-weight:600;cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:none;width:9px;height:9px;margin-top:6px;
  border-right:1.8px solid var(--muted);border-bottom:1.8px solid var(--muted);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq[open] summary::after{transform:rotate(-135deg)}
.faq[open] summary{color:var(--brand)}
.faq-body{padding:0 20px 20px;font-size:14.5px;line-height:1.9;color:var(--muted);max-width:80ch}
.faq-body p+p{margin-top:10px}

/* ---------- 内页头 ---------- */
.crumb{padding:16px 0 0;font-size:13px;color:var(--muted-2)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb li{display:flex;align-items:center;gap:6px}
.crumb li+li::before{content:"/";color:#C3C9D2}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb [aria-current="page"]{color:var(--ink-2)}

.phead{padding:30px 0 46px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff 0%,#FAFBFC 100%)}
.phead h1{font-size:clamp(27px,3.3vw,40px);line-height:1.24;letter-spacing:-.025em;font-weight:800;margin-top:14px;text-wrap:balance}
.phead .lede{margin-top:16px;max-width:74ch;font-size:16px;line-height:1.88;color:var(--muted)}
.phead .meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;
  padding:5px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.chip.brand{background:var(--brand-050);border-color:#F4CBD2;color:#A6192F;font-weight:600}
.chip .ico-svg{width:14px;height:14px}

/* 正文排版 */
.prose{max-width:80ch}
.prose h2{font-size:22px;line-height:1.4;letter-spacing:-.01em;margin:0 0 14px;font-weight:800}
.prose h3{font-size:16.5px;margin:26px 0 9px;font-weight:700}
.prose p{font-size:15px;line-height:1.92;color:var(--muted);margin-bottom:14px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:0}
.prose ul li{position:relative;padding-left:18px;font-size:15px;line-height:1.9;color:var(--muted);margin-bottom:7px}
.prose ul li::before{content:"";position:absolute;left:0;top:12px;width:5px;height:5px;border-radius:50%;background:var(--line-2)}
.prose a{font-weight:500;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose strong{color:var(--ink);font-weight:700}
.prose .code{font-size:12.5px}

/* 双栏内容 */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.aside-card h3{font-size:14.5px;font-weight:700;margin-bottom:12px}
.aside-card ul li{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;padding:8px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.aside-card ul li:last-child{border-bottom:0}
.aside-card ul li span:last-child{color:var(--ink-2);font-weight:600;text-align:right}
.aside-card ul.updates li{display:block;border-bottom:0;padding:9px 0}
.aside-card ul.updates li strong{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);line-height:1.5}
.aside-card ul.updates li span{display:block;margin-top:2px;font-size:12.5px;line-height:1.7;color:var(--muted);font-weight:400;text-align:left}

/* 里程碑 / 版本 */
.timeline{border-left:2px solid var(--line);padding-left:24px;margin-left:6px}
.timeline li{position:relative;padding-bottom:24px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-31px;top:6px;width:10px;height:10px;border-radius:50%;
  background:#fff;border:2px solid var(--line-2);
}
.timeline li:first-child::before{border-color:var(--brand);background:var(--brand)}
.timeline .tl-date{font-size:12.5px;color:var(--muted-2);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.timeline .tl-title{font-size:15px;font-weight:700;margin:3px 0 5px}
.timeline .tl-text{font-size:14px;line-height:1.82;color:var(--muted)}

/* ---------- 下载弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:20px}
.modal.is-open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(10,13,18,.58);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fadeIn .18s ease}
.modal-panel{
  position:relative;width:min(600px,100%);max-height:calc(100vh - 40px);overflow-y:auto;
  background:#fff;border-radius:18px;padding:28px;box-shadow:var(--shadow-lg);
  animation:popIn .2s cubic-bezier(.2,.9,.3,1);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
body.is-locked{overflow:hidden}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);border-radius:9px;color:var(--muted);
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.modal-close:hover{background:var(--bg-3);color:var(--ink);border-color:var(--line-2)}
.modal-close .ico-svg{width:17px;height:17px}
.modal h2{font-size:21px;font-weight:800;letter-spacing:-.015em;padding-right:40px}
.modal-sub{margin-top:7px;font-size:13.5px;color:var(--muted)}
.modal-sub b{color:var(--ink-2);font-weight:700}
.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0 4px}
.qr-card{
  border:1px solid var(--line);border-radius:12px;background:var(--bg-2);padding:14px 14px 16px;text-align:center;
}
.qr-slot{
  width:100%;max-width:190px;height:190px;margin:0 auto;background:#fff;
  border:1px solid var(--line);border-radius:10px;padding:6px;
  display:flex;align-items:center;justify-content:center;
}
.qr-slot img{display:block;width:100%;height:100%;object-fit:contain}
.qr-cap{margin-top:12px;font-size:13.5px;font-weight:700;color:var(--ink-2);letter-spacing:.01em}
.qr-note{margin-top:5px;font-size:11.5px;color:var(--muted-2);line-height:1.6}
.modal-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.modal-foot p{font-size:12.5px;line-height:1.7;color:var(--muted-2);max-width:34ch}
.modal-foot .btn{height:38px;padding:0 14px;font-size:13.5px}

/* ---------- 页脚 ---------- */
.site-footer{background:#121417;color:#A6ADB7;padding:58px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#8A919C}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.85;color:#8C939E;max-width:34ch}
.footer-col h2{font-size:12px;font-weight:700;letter-spacing:.14em;color:#fff;text-transform:uppercase;margin-bottom:14px}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:13.8px;color:#A6ADB7}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid #23262B;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:#7C838E;
}
.footer-bottom p{line-height:1.7}
.footer-bottom a{color:#8C939E}
.footer-legal{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-grid{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px}
}
@media (max-width:960px){
  .sec{padding:66px 0}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-lede{max-width:none}
  .mock-wrap{max-width:620px;margin:0 auto}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(3){border-left:0}
  .step:nth-child(n+3){border-top:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:32px}
  .nav,.header-cta{display:none}
  .nav-toggle{display:flex}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:680px){
  .container{padding:0 18px}
  .sec{padding:54px 0}
  .sec-head{margin-bottom:30px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .cta-band{padding:28px 24px;border-radius:14px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .mock-body{grid-template-columns:1fr}
  .mock-pane{min-height:0}
  .mock-pane.settings{display:none}
  .qr-grid{grid-template-columns:1fr;gap:12px}
  .qr-slot{height:160px;max-width:160px}
  .modal-panel{padding:22px;border-radius:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .stats{grid-template-columns:1fr 1fr}
  .hero-title{letter-spacing:-.02em}
  .timeline{padding-left:20px}
  .timeline li::before{left:-27px}
}
@media (max-width:400px){
  .stat{padding:18px 16px}
  .stat b{font-size:22px}
  .steps{grid-template-columns:1fr}
  .step{border-left:0;border-top:1px solid var(--line)}
  .step:first-child{border-top:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}

@media print{
  .site-header,.site-footer,.modal,.cta-band,.hero-actions{display:none !important}
  body{color:#000}
  .sec{padding:20px 0}
}