/* ============================================================
   速答 QuickReply · 客服快捷回复助手 官网样式
   设计语言：深紫罗兰 + 亮紫；移动优先；无外部字体依赖
   ============================================================ */
:root{
  --navy:#4C1D95;            /* 主品牌色-紫罗兰（明显偏紫） */
  --navy-2:#5B21B6;          /* 次级紫 */
  --navy-3:#7C3AED;          /* 亮紫 */
  --amber:#8B5CF6;           /* 强调色-亮紫 */
  --amber-deep:#7C3AED;      /* 紫深 */
  --ink:#101828;             /* 正文墨色 */
  --ink-2:#475467;           /* 次级文字 */
  --muted:#667085;           /* 弱文字 */
  --paper:#F7F6FC;           /* 页面浅底（淡紫白） */
  --card:#FFFFFF;            /* 卡片白 */
  --line:#E9E6F5;            /* 分隔线（淡紫） */
  --ok:#12B76A;              /* 成功绿 */
  --danger:#E5484D;          /* 警示红 */
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.05),0 6px 16px -6px rgba(16,24,40,.08);
  --shadow-md:0 12px 32px -10px rgba(76,29,149,.2);
  --maxw:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{overflow-x:clip}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased;font-size:16px}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:inherit}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:4px}
::selection{background:var(--amber);color:var(--navy)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 28px}}

/* ---------- 排版 ---------- */
h1,h2,h3,h4{line-height:1.28;letter-spacing:-.01em;font-weight:700}
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.sec-head{max-width:640px;margin:0 auto 40px;text-align:center}
.sec-head .kicker{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--amber-deep);background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.4);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:26px;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:15.5px}
@media (min-width:768px){.sec-head h2{font-size:34px}}
.muted{color:var(--muted)}
.tc{text-align:center}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--amber);color:#fff;box-shadow:0 10px 22px -8px rgba(139,92,246,.6)}
.btn-primary:hover{background:#A78BFA;transform:translateY(-1px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2);transform:translateY(-1px)}
.btn-ghost{border:1.5px solid var(--line);color:var(--ink);background:var(--card)}
.btn-ghost:hover{border-color:var(--navy-3);color:var(--navy)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px}
.btn .ic{width:19px;height:19px;flex:none}

/* ---------- 顶部导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:var(--navy);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
/* ===== Logo 替换区 =====
   Logo 全站共 2 处：导航栏 .brand 与页脚 .f-brand，同步替换。
   方式一（推荐）：将 <span class="brand-mark">…SVG…</span> 整体替换为
     <img class="logo-img" src="assets/logo.png" alt="速答 QuickReply">
   方式二：保留现有 SVG，仅修改图形或下方配色变量即可。 */
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:19px;min-width:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--amber);color:var(--navy);display:flex;align-items:center;justify-content:center;flex:none}
.brand-mark svg{width:20px;height:20px}
/* 图片版 Logo：按比例缩放（不拉伸），自动适配导航与页脚；max-width 防止超宽图撑破导航 */
.logo-img{height:auto;max-height:26px;max-width:170px;width:auto;object-fit:contain;display:block;flex:none}
.f-brand .logo-img{max-height:24px;max-width:150px}
/* Logo 响应式：窄屏自动缩小，避免与导航菜单挤压 */
@media (max-width:767px){
  .brand{font-size:17px;gap:8px}
  .brand-mark{width:28px;height:28px;border-radius:8px}
  .brand-mark svg{width:17px;height:17px}
  .logo-img{max-height:22px;max-width:130px}
}
.nav-links{position:fixed;top:0;right:0;width:280px;height:100vh;background:var(--navy);display:flex;flex-direction:column;gap:2px;padding:84px 22px 30px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s ease,visibility .25s ease;z-index:99;overflow-y:auto}
.nav-links.open{opacity:1;visibility:visible;pointer-events:auto;animation:navIn .3s ease}
@keyframes navIn{from{transform:translateX(64px);opacity:0}to{transform:none;opacity:1}}
.nav-links a{padding:12px 14px;border-radius:10px;color:rgba(255,255,255,.82);font-size:16px;font-weight:500;display:flex;align-items:center;gap:10px}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,.1);color:#fff}
.nav-links a.active::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--amber);flex:none}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-burger{width:44px;height:44px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:rgba(255,255,255,.1)}
.nav-burger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:.25s}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mask{position:fixed;inset:0;background:rgba(76,29,149,.45);opacity:0;visibility:hidden;transition:.25s;z-index:98}
.mask.on{opacity:1;visibility:visible}
@media (min-width:992px){
  .nav-links{position:static;width:auto;height:auto;background:none;flex-direction:row;padding:0;box-shadow:none;overflow:visible;opacity:1;visibility:visible;pointer-events:auto;animation:none}
  .nav-links a{padding:10px 14px;font-size:15px}
  .nav-links a.active::before{display:none}
  .nav-links a.active{color:var(--amber)}
  .nav-burger{display:none}
}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(900px 420px at 88% -12%,rgba(139,92,246,.32),transparent 62%),radial-gradient(700px 460px at -8% 18%,rgba(124,58,237,.72),transparent 60%),var(--navy);color:#fff;overflow:hidden;position:relative}
.hero-inner{display:grid;gap:48px;padding:72px 20px 76px}
@media (min-width:992px){.hero-inner{grid-template-columns:1.04fr .96fr;align-items:center;gap:56px;padding:96px 28px 104px}}
.hero h1{font-size:34px;line-height:1.2;margin:18px 0 18px;letter-spacing:-.02em}
@media (min-width:768px){.hero h1{font-size:46px}}
.hero h1 .hl{color:var(--amber)}
.hero .sub{font-size:16.5px;color:rgba(255,255,255,.78);max-width:520px;margin-bottom:28px}
.hero .sub b{color:#fff}
.hero-downloads{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px}
@media (min-width:768px){.hero-stats{gap:40px}}
.hero-stats .hs b{font-size:24px;font-weight:800;color:#fff;display:block}
.hero-stats .hs span{font-size:13px;color:rgba(255,255,255,.62)}
.hero-note{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:14px}

/* 模拟产品界面 */
.mock{background:var(--card);border-radius:16px;box-shadow:0 40px 90px -30px rgba(0,0,0,.55);overflow:hidden;position:relative}
.mock-bar{display:flex;align-items:center;gap:8px;background:var(--navy);padding:12px 16px;color:#fff}
.mock-bar .dot{width:11px;height:11px;border-radius:50%;background:var(--navy-3)}
.mock-bar .dot.a{background:#F87171}
.mock-bar .dot.b{background:var(--amber)}
.mock-bar .dot.c{background:#34D399}
.mock-bar .t{flex:1;text-align:center;font-size:13px;font-weight:600;color:rgba(255,255,255,.9)}
.mock-body{padding:16px}
.mock-search{display:flex;align-items:center;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:10px 12px;color:var(--muted);font-size:13px}
.mock-search svg{width:16px;height:16px;flex:none}
.mock-tabs{display:flex;gap:6px;margin:12px 0;flex-wrap:wrap}
.mock-tab{font-size:12.5px;font-weight:600;padding:7px 13px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--ink-2);transition:.18s}
.mock-tab.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.mock-cards{display:grid;gap:8px}
.mock-card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:11px 13px;cursor:pointer;transition:transform .18s,border-color .18s}
.mock-card:hover{transform:translateX(3px);border-color:var(--navy-3)}
.mock-card .mc-t{font-size:13px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:3px}
.mock-card .mc-t .badge{font-size:10.5px;font-weight:600;background:rgba(139,92,246,.2);color:var(--amber-deep);padding:2px 8px;border-radius:999px}
.mock-card .mc-c{font-size:12px;color:var(--muted);line-height:1.55}
.mock-float{position:absolute;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-md);padding:10px 14px;font-size:12.5px;display:flex;align-items:center;gap:8px;color:var(--ink-2)}
.mock-float svg{width:16px;height:16px;color:var(--ok)}
.mock-float.f1{top:-14px;right:-6px;animation:floaty 5s ease-in-out infinite}
.mock-float.f2{bottom:-14px;left:-6px;animation:floaty 6s ease-in-out infinite reverse}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ---------- 特性卡片 ---------- */
.cards-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:600px){.cards-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.cards-grid.c4{grid-template-columns:repeat(4,1fr)}}
@media (min-width:1024px){.cards-grid.c3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card .ic{width:46px;height:46px;border-radius:12px;background:rgba(76,29,149,.06);color:var(--navy);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card .ic svg{width:24px;height:24px}
.card h3{font-size:17.5px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}

/* ---------- 场景分块 ---------- */
.scene-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.scene-top{padding:26px 26px 10px;display:flex;align-items:center;gap:12px}
.scene-top .ic{width:44px;height:44px;border-radius:12px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.scene-top .ic svg{width:22px;height:22px}
.scene-top h3{font-size:18px}
.scene-body{padding:0 26px 20px;color:var(--muted);font-size:14.5px;flex:1}
.scene-foot{padding:0 26px 24px;display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:12.5px;background:var(--paper);border:1px solid var(--line);color:var(--ink-2);padding:6px 12px;border-radius:999px}
.scene-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--navy);font-size:14.5px;padding:8px 0;margin-left:auto}
.scene-link svg{width:16px;height:16px;transition:transform .2s}
.scene-card:hover .scene-link svg{transform:translateX(3px)}

/* ---------- 功能网格 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media (min-width:768px){.feat-grid{grid-template-columns:repeat(4,1fr);gap:16px}}
.feat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 16px;text-align:center;transition:border-color .2s,transform .2s,box-shadow .2s}
.feat:hover{border-color:var(--navy-3);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.feat svg{width:26px;height:26px;margin:0 auto 10px;color:var(--navy)}
.feat b{font-size:14px;font-weight:600;display:block}
.feat span{font-size:12px;color:var(--muted)}

/* ---------- 下载页 ---------- */
.page-head{background:radial-gradient(800px 400px at 90% -20%,rgba(139,92,246,.25),transparent 60%),var(--navy);color:#fff;padding:64px 0 56px}
.page-head h1{font-size:30px;margin-bottom:10px}
@media (min-width:768px){.page-head h1{font-size:38px}}
.page-head p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:600px}
.crumb{display:flex;gap:8px;align-items:center;font-size:13.5px;color:rgba(255,255,255,.6);margin-top:16px}
.crumb a:hover{color:#fff}
.version-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:600px){.version-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.version-grid{grid-template-columns:repeat(4,1fr)}}
.v-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;position:relative}
.v-card .hot{position:absolute;top:-11px;left:20px;background:var(--amber);color:var(--navy);font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px}
.v-ic{width:52px;height:52px;border-radius:13px;background:rgba(76,29,149,.07);color:var(--navy);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.v-ic svg{width:26px;height:26px}
.v-card h3{font-size:18px}
.v-card .v-meta{color:var(--muted);font-size:13px;margin:4px 0 14px}
.v-card ul{margin-bottom:18px;flex:1}
.v-card li{position:relative;padding:6px 0 6px 24px;color:var(--ink-2);font-size:14px;border-bottom:1px dashed var(--line)}
.v-card li::before{content:"";position:absolute;left:0;top:13px;width:14px;height:14px;border-radius:50%;background:rgba(18,183,106,.14);display:flex;align-items:center;justify-content:center}
.v-card li.ok::before{background:var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/10px no-repeat}
.v-card li.soon::before{background:var(--line)}
.v-card li.soon{color:var(--muted)}
.v-card .btn{width:100%}
.req-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:600px){.req-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.req-grid{grid-template-columns:repeat(4,1fr)}}
.req{display:flex;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;align-items:flex-start}
.req .ic{width:40px;height:40px;border-radius:10px;background:rgba(76,29,149,.06);color:var(--navy);display:flex;align-items:center;justify-content:center;flex:none}
.req .ic svg{width:20px;height:20px}
.req b{display:block;font-size:15px;margin-bottom:2px}
.req span{color:var(--muted);font-size:13px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:22px;counter-reset:step}
@media (min-width:600px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;padding-top:56px}
.step::before{content:counter(step,counter-reset:step);counter-increment:step;position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 20px -8px rgba(76,29,149,.5)}
.step h3{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}
.counterfix::before{counter-increment:step 0}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s}
.faq-item.open{border-color:var(--navy-3)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 20px;font-size:15.5px;font-weight:600;text-align:left;min-height:44px}
.faq-q .arr{width:22px;height:22px;border-radius:50%;background:var(--paper);color:var(--navy);display:flex;align-items:center;justify-content:center;flex:none;transition:transform .25s}
.faq-q .arr svg{width:13px;height:13px}
.faq-item.open .faq-q .arr{transform:rotate(45deg);background:var(--navy);color:#fff}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{padding:0 20px 18px;color:var(--muted);font-size:14.5px}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(120deg,var(--navy),var(--navy-3));border-radius:20px;color:#fff;text-align:center;padding:48px 24px;position:relative;overflow:hidden}
@media (min-width:768px){.cta{padding:64px 48px}}
.cta::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(closest-side,rgba(139,92,246,.35),transparent);top:-180px;right:-120px;pointer-events:none}
.cta h2{font-size:26px;margin-bottom:12px;position:relative}
@media (min-width:768px){.cta h2{font-size:34px}}
.cta p{color:rgba(255,255,255,.8);max-width:520px;margin:0 auto 26px;font-size:15.5px;position:relative}
.cta .btn{position:relative}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.7);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;margin-bottom:36px}
@media (min-width:600px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer .f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px;margin-bottom:12px}
.footer .f-desc{font-size:14px;max-width:300px;margin-bottom:16px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.footer a{display:block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.66);transition:color .2s}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:rgba(255,255,255,.5)}
@media (min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between}}

/* ---------- 时间轴（更新日志） ---------- */
.timeline{max-width:760px;margin:0 auto}
.tl-item{display:grid;grid-template-columns:26px 1fr;gap:16px;position:relative;padding-bottom:30px}
.tl-item::before{content:"";position:absolute;left:12px;top:20px;bottom:0;width:2px;background:var(--line)}
.tl-item:last-child::before{display:none}
.tl-dot{width:26px;height:26px;border-radius:50%;background:var(--card);border:3px solid var(--amber);position:relative;z-index:1;display:flex;align-items:center;justify-content:center}
.tl-dot svg{width:11px;height:11px;color:var(--navy)}
.tl-body{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-sm)}
.tl-body .tl-time{display:inline-block;font-size:12.5px;font-weight:700;color:var(--amber-deep);background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.35);padding:3px 11px;border-radius:999px;margin-bottom:10px}
.tl-body h3{font-size:16.5px;margin-bottom:6px}
.tl-body p{color:var(--muted);font-size:14px}
.tl-body .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tl-body .tags span{font-size:12px;background:var(--paper);border:1px solid var(--line);color:var(--ink-2);padding:3px 10px;border-radius:999px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:1fr;gap:18px;align-items:stretch}
@media (min-width:600px){.price-grid{grid-template-columns:repeat(3,1fr)}}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);position:relative}
.price-card.featured{border:2px solid var(--navy);box-shadow:var(--shadow-md)}
.price-card .hot{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--navy);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;white-space:nowrap}
.price-card .p-name{font-size:17px;font-weight:700}
.price-card .p-ver{font-size:12.5px;color:var(--amber-deep);font-weight:600;margin-bottom:16px}
.price-card .p-price{font-size:30px;font-weight:800;letter-spacing:-.02em;margin-bottom:4px}
.price-card .p-price small{font-size:14px;font-weight:600;color:var(--muted)}
.price-card .p-note{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.price-card ul{margin-bottom:22px;flex:1}
.price-card li{position:relative;padding:7px 0 7px 26px;color:var(--ink-2);font-size:14px;border-bottom:1px dashed var(--line)}
.price-card li::before{content:"";position:absolute;left:0;top:13px;width:15px;height:15px;border-radius:50%;background:var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/9px no-repeat}
.price-table-wrap{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;min-width:620px}
.compare th,.compare td{border-bottom:1px solid var(--line);padding:13px 16px;text-align:center;font-size:14px}
.compare th{background:var(--navy);color:#fff;font-weight:600}
.compare th:first-child,.compare td:first-child{text-align:left;font-weight:600}
.compare tr:last-child td{border-bottom:none}
.compare .yes{color:var(--ok)}
.compare .no{color:var(--line)}
.compare td .ic{width:18px;height:18px;margin:0 auto}

/* ---------- 特色行（features 页） ---------- */
.alt-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;padding:34px 0}
@media (min-width:900px){.alt-row{grid-template-columns:1fr 1fr;gap:52px}}
.alt-row.reverse .alt-copy{order:2}
@media (min-width:900px){.alt-row.reverse .alt-copy{order:1}}
.alt-row.reverse .alt-demo{order:1}
@media (min-width:900px){.alt-row.reverse .alt-demo{order:2}}
.alt-copy .kicker{display:inline-block;font-size:12.5px;font-weight:700;color:var(--amber-deep);background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.35);padding:4px 12px;border-radius:999px;margin-bottom:14px}
.alt-copy h2{font-size:24px;margin-bottom:12px}
@media (min-width:768px){.alt-copy h2{font-size:30px}}
.alt-copy p{color:var(--muted);font-size:15px;margin-bottom:16px}
.alt-copy ul li{position:relative;padding:7px 0 7px 26px;color:var(--ink-2);font-size:14.5px}
.alt-copy ul li::before{content:"";position:absolute;left:0;top:13px;width:15px;height:15px;border-radius:50%;background:var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/9px no-repeat}
.alt-demo{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);padding:18px}
.alt-demo .demo-head{display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:14px;font-size:13.5px;font-weight:700;color:var(--navy)}
.alt-demo .demo-head svg{width:18px;height:18px}
.alt-demo .demo-line{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:13px;color:var(--ink-2)}
.alt-demo .demo-line .key{flex:none;font-size:11.5px;font-weight:700;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:2px 8px;color:var(--ink)}
.alt-demo .demo-line .bar{height:9px;border-radius:5px;background:var(--paper)}
.alt-demo .demo-line .bar.hl{background:linear-gradient(90deg,var(--amber),var(--amber-deep))}
.alt-demo .demo-line .val{margin-left:auto;color:var(--muted);font-size:12px;white-space:nowrap}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:900px){.contact-grid{grid-template-columns:1fr 1.1fr;align-items:start}}
.contact-info .ci{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:12px}
.contact-info .ci .ic{width:42px;height:42px;border-radius:11px;background:rgba(76,29,149,.06);color:var(--navy);display:flex;align-items:center;justify-content:center;flex:none}
.contact-info .ci .ic svg{width:21px;height:21px}
.contact-info .ci b{display:block;font-size:15px}
.contact-info .ci span{font-size:14px;color:var(--muted);word-break:break-all}
.contact-form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.contact-form h3{font-size:19px;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;font-size:16px;background:#fff;color:var(--ink);transition:border-color .2s}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--navy-3);outline:none}
.field textarea{min-height:120px;resize:vertical}
.hint{font-size:12px;color:var(--muted);margin-top:5px}

/* ---------- 法律页 ---------- */
.legal{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm)}
@media (min-width:768px){.legal{padding:44px}}
.legal h1{font-size:24px;margin-bottom:8px}
.legal .legal-meta{font-size:13px;color:var(--muted);margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.legal h2{font-size:18px;margin:28px 0 10px;padding-left:12px;border-left:4px solid var(--amber)}
.legal p,.legal li{color:var(--ink-2);font-size:14.5px;margin-bottom:10px}
.legal ol,.legal ul{padding-left:6px}
.legal li{list-style-position:inside}

/* ---------- 提示 toast ---------- */
.toast-wrap{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:var(--navy);color:#fff;font-size:14px;padding:12px 22px;border-radius:10px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:9px;opacity:0;transform:translateY(10px);transition:.28s;max-width:min(92vw,480px)}
.toast.show{opacity:1;transform:translateY(0)}
.toast svg{width:17px;height:17px;color:var(--amber);flex:none}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;z-index:90}
.to-top.on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top svg{width:19px;height:19px}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 徽标/工具 ---------- */
.note-demo{display:inline-block;font-size:12px;color:var(--amber-deep);background:rgba(139,92,246,.12);border:1px dashed rgba(139,92,246,.5);padding:4px 12px;border-radius:8px;margin-top:12px}
.copy-btn{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--navy);background:rgba(76,29,149,.06);border-radius:8px;padding:6px 12px;transition:background .2s;margin-left:8px;vertical-align:middle}
.copy-btn:hover{background:rgba(76,29,149,.12)}
.copy-btn svg{width:14px;height:14px}