/* ===== 设计令牌 ===== */
:root{
  --c-bg:#ffffff;
  --c-bg-soft:#f4f7fb;
  --c-bg-deep:#0b1f3a;
  --c-brand:#1e6fff;
  --c-brand-hover:#1857d6;
  --c-brand-soft:#eaf2ff;
  --c-text:#16233a;
  --c-text-2:#52627a;
  --c-text-3:#8a99b3;
  --c-line:#e3e9f2;
  --c-ok:#1caf7c;
  --c-warn:#d97706;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:22px;
  --shadow-s:0 2px 10px rgba(11,31,58,.06);
  --shadow-m:0 12px 32px rgba(11,31,58,.10);
  --shadow-l:0 24px 60px rgba(11,31,58,.14);
  --space-1:8px;--space-2:16px;--space-3:24px;--space-4:40px;--space-5:64px;--space-6:96px;
  --font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
/* ===== 基础 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);color:var(--c-text);background:var(--c-bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--c-brand);text-decoration:none}
a:hover{color:var(--c-brand-hover)}
ul,ol{list-style:none}
/* ===== 自绘滚动条 ===== */
*{scrollbar-width:thin;scrollbar-color:#c6d3e8 transparent}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#c6d3e8;border-radius:8px;border:2px solid var(--c-bg)}
::-webkit-scrollbar-thumb:hover{background:#9fb4d4}
/* ===== 自绘按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-s);padding:12px 26px;font-size:15px;font-weight:600;cursor:pointer;transition:all .22s ease;font-family:inherit;line-height:1.2;white-space:nowrap}
.btn-primary{background:var(--c-brand);color:#fff}
.btn-primary:hover{background:var(--c-brand-hover);transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,111,255,.28)}
.btn-ghost{background:transparent;color:var(--c-text);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-brand-hover);color:#fff;background:var(--c-brand-hover)}
.btn-light{background:#fff;color:var(--c-bg-deep)}
.btn-light:hover{background:var(--c-brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,111,255,.28)}
.btn:focus-visible{outline:3px solid rgba(30,111,255,.45);outline-offset:2px}
/* ===== 自绘表单控件 ===== */
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:13px;font-weight:600;color:var(--c-text-2)}
.input,.select,.textarea{width:100%;border:1px solid var(--c-line);border-radius:var(--radius-s);padding:11px 14px;font-size:14px;font-family:inherit;color:var(--c-text);background:#fff;transition:border-color .2s,box-shadow .2s;-webkit-appearance:none;appearance:none}
.input:hover,.select:hover,.textarea:hover{border-color:#b9c9e2}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(30,111,255,.14)}
.input::placeholder,.textarea::placeholder{color:var(--c-text-3)}
.textarea{min-height:110px;resize:vertical}
.select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%238a99b3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.check{display:inline-flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--c-text-2);cursor:pointer;user-select:none}
.check input{position:absolute;opacity:0;width:0;height:0}
.check .box{width:18px;height:18px;min-width:18px;border:2px solid #c3d0e6;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;transition:all .18s ease;margin-top:2px}
.check .box svg{width:11px;height:11px;opacity:0;transform:scale(.4);transition:all .18s ease}
.check input:checked + .box{background:var(--c-brand);border-color:var(--c-brand)}
.check input:checked + .box svg{opacity:1;transform:scale(1)}
.check input:focus-visible + .box{outline:3px solid rgba(30,111,255,.4);outline-offset:2px}
/* ===== 布局 ===== */
.container{max-width:1180px;margin:0 auto;padding:0 var(--space-3)}
.section{padding:var(--space-6) 0}
.section-head{text-align:center;max-width:720px;margin:0 auto var(--space-5)}
.section-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-brand);background:var(--c-brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;text-transform:uppercase}
.section-head h2{font-size:34px;line-height:1.25;letter-spacing:-.01em;color:var(--c-bg-deep)}
.section-head p{color:var(--c-text-2);font-size:16px;margin-top:12px}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
/* ===== 页头 ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:var(--shadow-s)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--c-bg-deep);letter-spacing:-.01em}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#1e6fff,#0b5ce0);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:16px;box-shadow:0 6px 14px rgba(30,111,255,.3)}
.brand small{display:block;font-size:10px;font-weight:600;letter-spacing:.18em;color:var(--c-text-3);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{display:block;padding:9px 14px;font-size:14px;font-weight:500;color:var(--c-text-2);border-radius:8px;transition:all .2s}
.nav-links a:hover{color:#fff;background:var(--c-brand-hover)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:10px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--c-bg-deep);border-radius:2px;transition:all .25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(180deg,#f6f9ff 0%,#eef4ff 55%,#ffffff 100%);padding:var(--space-6) 0 var(--space-5);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--space-5);align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600;color:var(--c-text-2);box-shadow:var(--shadow-s)}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--c-ok);box-shadow:0 0 0 4px rgba(28,175,124,.18)}
.hero h1{font-size:52px;line-height:1.16;letter-spacing:-.02em;color:var(--c-bg-deep);margin:22px 0 18px}
.hero h1 .grad{background:linear-gradient(100deg,#1e6fff,#4b8bff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;border-top:1px solid var(--c-line);padding-top:30px;max-width:620px}
.stat .num{font-size:26px;font-weight:800;color:var(--c-bg-deep);letter-spacing:-.01em}
.stat .num small{font-size:15px;color:var(--c-brand);font-weight:700}
.stat .label{font-size:12px;color:var(--c-text-3);margin-top:2px}
.hero-visual{position:relative}
.panel{background:#fff;border-radius:var(--radius-l);box-shadow:var(--shadow-l);border:1px solid rgba(255,255,255,.6);overflow:hidden}
.panel-top{display:flex;align-items:center;gap:8px;padding:14px 18px;background:var(--c-bg-deep);}
.panel-top .dot{width:10px;height:10px;border-radius:50%;background:#ff5f57}
.panel-top .dot:nth-child(2){background:#febc2e}
.panel-top .dot:nth-child(3){background:#28c840}
.panel-top .addr{margin-left:12px;font-family:var(--font-mono);font-size:12px;color:#7d93b8}
.panel-body{padding:22px 24px;display:flex;flex-direction:column;gap:16px}
.panel-row{display:grid;grid-template-columns:1fr 2fr 1fr;gap:8px;font-size:12px;color:var(--c-text-2);align-items:center}
.panel-row .k{font-weight:600;color:var(--c-text)}
.panel-row .bar{height:8px;border-radius:6px;background:var(--c-bg-soft);overflow:hidden}
.panel-row .bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#1e6fff,#7aa8ff)}
.panel-row .v{font-family:var(--font-mono);text-align:right}
.panel-card{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.panel-card .c{background:var(--c-bg-soft);border-radius:12px;padding:14px;text-align:center}
.panel-card .c b{display:block;font-size:20px;color:var(--c-bg-deep);margin-bottom:2px}
.panel-card .c span{font-size:11px;color:var(--c-text-3)}
.panel-flow{display:flex;align-items:center;gap:10px;background:var(--c-brand-soft);border-radius:12px;padding:12px 16px}
.panel-flow .node{flex:1;text-align:center;background:#fff;border-radius:9px;padding:10px 6px;font-size:12px;font-weight:600;color:var(--c-text);box-shadow:var(--shadow-s)}
.panel-flow .arrow{color:var(--c-brand);font-size:12px}
.float-card{position:absolute;bottom:-26px;left:-34px;background:#fff;border-radius:var(--radius-m);box-shadow:var(--shadow-m);padding:16px 20px;display:flex;align-items:center;gap:14px;border:1px solid var(--c-line);animation:floaty 5s ease-in-out infinite}
.float-card .ic{width:42px;height:42px;border-radius:11px;background:var(--c-brand-soft);display:flex;align-items:center;justify-content:center;color:var(--c-brand)}
.float-card .tx b{display:block;font-size:14px;color:var(--c-bg-deep)}
.float-card .tx span{font-size:12px;color:var(--c-text-3)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
/* ===== 能力卡片 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-m);padding:30px 26px;transition:all .28s ease;position:relative;overflow:hidden}
.feature-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,var(--c-brand),#7aa8ff);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:#d6e2f5}
.feature-card:hover::after{transform:scaleX(1)}
.feature-ic{width:52px;height:52px;border-radius:13px;background:var(--c-brand-soft);color:var(--c-brand);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feature-card h3{font-size:18px;color:var(--c-bg-deep);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--c-text-2)}
.feature-list{margin-top:16px;display:grid;gap:8px}
.feature-list li{display:flex;gap:9px;font-size:13px;color:var(--c-text-2)}
.feature-list li svg{width:15px;height:15px;min-width:15px;color:var(--c-ok);margin-top:3px}
/* ===== 技术优势 ===== */
.tech{background:var(--c-bg-deep);color:#eaf0fb;position:relative;overflow:hidden}
.tech::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(30,111,255,.22),transparent 65%);top:-200px;right:-120px}
.tech .section-head h2{color:#fff}
.tech .section-head p{color:#9db0cf}
.tech .section-tag{background:rgba(30,111,255,.18);color:#7aa8ff}
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;z-index:1}
.tech-card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.10);border-radius:var(--radius-m);padding:26px 22px;transition:all .28s ease}
.tech-card:hover{background:rgba(255,255,255,.10);transform:translateY(-5px)}
.tech-card .t-ic{width:44px;height:44px;border-radius:11px;background:rgba(30,111,255,.2);color:#7aa8ff;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.tech-card h3{font-size:16px;color:#fff;margin-bottom:8px}
.tech-card p{font-size:13px;color:#9db0cf}
.tech-card code{display:inline-block;font-family:var(--font-mono);font-size:12px;background:rgba(255,255,255,.08);border-radius:6px;padding:2px 7px;color:#bcd3ff;margin-top:6px}
/* ===== 场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-m);padding:28px 26px;transition:all .28s ease}
.scene-card:hover{box-shadow:var(--shadow-m);border-color:#d6e2f5;transform:translateY(-4px)}
.scene-card .tag{position:absolute;top:20px;right:20px;font-size:11px;font-weight:700;color:var(--c-brand);background:var(--c-brand-soft);border-radius:999px;padding:4px 11px}
.scene-card h3{font-size:17px;color:var(--c-bg-deep);margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--c-text-2)}
/* ===== 部署流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:step}
.step{position:relative;text-align:center;padding-top:56px}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:0;left:50%;transform:translateX(-50%);width:44px;height:44px;border-radius:50%;background:var(--c-brand);color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(30,111,255,.30)}
.step::after{content:"";position:absolute;top:22px;left:calc(50% + 46px);width:calc(100% - 92px);height:2px;background:#dbe6f7;z-index:-1}
.step:last-child::after{display:none}
.step h3{font-size:16px;color:var(--c-bg-deep);margin-bottom:8px}
.step p{font-size:13px;color:var(--c-text-2)}
/* ===== 安全区 ===== */
.safety{background:var(--c-bg-soft);border-top:1px solid var(--c-line)}
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.safety-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-m);padding:22px 20px;transition:all .25s}
.safety-item:hover{box-shadow:var(--shadow-s)}
.safety-item .s-ic{width:40px;height:40px;min-width:40px;border-radius:10px;background:var(--c-brand-soft);color:var(--c-brand);display:flex;align-items:center;justify-content:center}
.safety-item b{display:block;font-size:14px;color:var(--c-bg-deep);margin-bottom:4px}
.safety-item span{font-size:12px;color:var(--c-text-2)}
/* ===== FAQ ===== */
.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{border:1px solid var(--c-line);border-radius:var(--radius-m);margin-bottom:14px;overflow:hidden;transition:border-color .25s,box-shadow .25s;background:#fff}
.faq-item.open{border-color:#cfe0fa;box-shadow:var(--shadow-s)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-bg-deep);cursor:pointer;text-align:left;font-family:inherit;transition:color .2s}
.faq-q:hover{color:var(--c-brand)}
.faq-q .caret{width:30px;height:30px;min-width:30px;border-radius:9px;background:var(--c-bg-soft);display:inline-flex;align-items:center;justify-content:center;color:var(--c-text-2);transition:all .28s ease}
.faq-item.open .caret{transform:rotate(180deg);background:var(--c-brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 20px;font-size:14px;color:var(--c-text-2);border-top:1px dashed var(--c-line);margin:0 22px 0;padding-top:14px}
/* ===== 表单 CTA ===== */
.cta{background:linear-gradient(135deg,#0b1f3a 0%,#123a6d 100%);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(30,111,255,.30),transparent 65%);bottom:-160px;left:-100px}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-5);position:relative;z-index:1}
.cta h2{color:#fff;font-size:34px;line-height:1.25;margin-bottom:18px}
.cta .cta-sub{color:#9db0cf;font-size:16px;margin-bottom:28px;max-width:440px}
.cta-points{display:grid;gap:14px}
.cta-points li{display:flex;gap:11px;align-items:center;color:#c9d8f2;font-size:14px}
.cta-points li svg{width:18px;height:18px;min-width:18px;color:#7aa8ff}
.cta-form{background:#fff;border-radius:var(--radius-l);padding:34px;box-shadow:var(--shadow-l)}
.cta-form h3{font-size:20px;color:var(--c-bg-deep);margin-bottom:6px}
.cta-form .form-sub{font-size:13px;color:var(--c-text-3);margin-bottom:22px}
.form-note{font-size:12px;color:var(--c-text-3);margin-top:6px}
.form-ok{display:none;text-align:center;padding:26px 10px}
.form-ok .ok-ic{width:64px;height:64px;border-radius:50%;background:var(--c-brand-soft);color:var(--c-brand);display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.form-ok h4{font-size:18px;color:var(--c-bg-deep);margin-bottom:8px}
.form-ok p{font-size:13px;color:var(--c-text-2)}
/* ===== 页脚 ===== */
.site-footer{background:var(--c-bg-deep);color:#8fa3c4;padding:56px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-desc{font-size:13px;line-height:1.8;max-width:300px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#8fa3c4;font-size:13px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding-top:22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px}
/* ===== 返回顶部 ===== */
.to-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;background:var(--c-brand);color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(30,111,255,.35);opacity:0;transform:translateY(14px);pointer-events:none;transition:all .3s ease;z-index:90}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:var(--c-brand-hover)}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero-stats{max-width:100%}
  .feature-grid,.scene-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:40px}
  .step::after{display:none}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .section{padding:var(--space-5) 0}
  .hero h1{font-size:36px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .feature-grid,.scene-grid,.tech-grid,.steps,.safety-grid{grid-template-columns:1fr}
  .nav-links{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px 20px 22px;border-bottom:1px solid var(--c-line);box-shadow:var(--shadow-m);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 8px}
  .nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .float-card{left:6px;bottom:-30px}
  .footer-grid{grid-template-columns:1fr}
  .panel-card{grid-template-columns:1fr}
  .section-head h2{font-size:28px}
}

/* ===== 更新日志页（changelog.html）===== */
.page-main{min-height:60vh}
.page-head{background:linear-gradient(180deg,var(--c-bg-soft),var(--c-bg));padding:var(--space-5) 0 var(--space-3);border-bottom:1px solid var(--c-line)}
.page-head h1{font-size:40px;margin:12px 0 10px;color:var(--c-text)}
.page-head p{color:var(--c-text-2);font-size:16px;max-width:640px}
.page-section{padding:var(--space-5) 0 var(--space-6)}
.chlog-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:var(--space-4)}
.chlog-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-m);box-shadow:var(--shadow-s);padding:var(--space-3)}
.chlog-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.chlog-version{font-size:22px;font-weight:700;color:var(--c-brand)}
.chlog-build{font-size:13px;font-weight:600;color:var(--c-text-3);background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:999px;padding:4px 10px}
.chlog-date{font-size:13px;color:var(--c-text-3)}
.chlog-body h2{font-size:17px;color:var(--c-text);margin-bottom:12px}
.chlog-body ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.chlog-body li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.7;color:var(--c-text-2)}
.chlog-tag{flex:none;display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;border-radius:6px;padding:2px 8px;margin-top:2px}
.chlog-tag svg{width:12px;height:12px}
.t-new{color:#0b7a56;background:rgba(28,175,124,.12)}
.t-fix{color:#b45309;background:rgba(217,119,6,.12)}
.t-opt{color:#1d4ed8;background:rgba(30,111,255,.10)}
.chlog-empty{padding:var(--space-5);text-align:center;color:var(--c-text-3)}
@media (max-width:720px){
  .page-head h1{font-size:30px}
  .chlog-item{padding:var(--space-2)}
}

/* chlog 版本演进说明与安全标签（R021） */
.chlog-note{font-size:14px;line-height:1.8;color:var(--c-text-2);background:var(--c-bg-soft);border-left:3px solid var(--c-brand);border-radius:6px;padding:10px 14px;margin-bottom:14px}
.t-sec{color:#b91c1c;background:rgba(220,38,38,.10)}

/* 邮箱验证码表单（R019） */
.code-row{display:flex;gap:10px}
.code-row .input{flex:1;min-width:0}
.btn-code{flex:none;white-space:nowrap}
.btn-code:disabled{opacity:.65;cursor:not-allowed}
.field-tip{font-size:13px;line-height:1.5;margin-top:6px;min-height:20px;color:var(--c-text-3)}
.field-tip.ok{color:var(--c-brand)}
.field-tip.err{color:var(--c-warn)}
.form-err{display:none;font-size:14px;line-height:1.6;color:var(--c-warn);background:rgba(217,119,6,.10);border:1px solid rgba(217,119,6,.30);border-radius:6px;padding:8px 12px;margin-top:10px}