/* =========================================================================
   appt247 — 官网样式
   一个主色（深靛蓝）+ 一个 CTA 暖色（琥珀）+ 中性灰。系统字体，无外部依赖。
   目标：让一个 50 岁的店主 10 秒内看懂这是什么。
   ========================================================================= */

/* ---------- 设计变量 ---------- */
:root{
    --brand:#1E3A8A;
    --brand-2:#2a4fbb;
    --brand-3:#152a63;
    --brand-soft:#eef2ff;
    --brand-line:#c7d4f7;

    --cta:#F59E0B;
    --cta-2:#e08c04;
    --cta-soft:#fff6e5;

    --ink:#0f172a;
    --ink-2:#334155;
    --ink-3:#64748b;
    --ink-4:#94a3b8;

    --bg:#ffffff;
    --bg-soft:#f5f7fc;
    --bg-2:#eaeefa;
    --panel:#ffffff;

    --line:#dfe5f0;
    --line-2:#edf0f7;

    --ok:#15803d;
    --ok-soft:#e8f6ed;

    --radius:8px;
    --radius-lg:14px;
    --container:1180px;
    --header-h:74px;

    --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 2px 8px rgba(15,23,42,.05);
    --shadow:0 10px 30px rgba(15,23,42,.09);
    --shadow-lg:0 22px 60px rgba(15,23,42,.14);
    --ease:cubic-bezier(.22,.68,.32,1);
}

@media (prefers-color-scheme:dark){
    :root{
        --brand:#7ea0f5;
        --brand-2:#96b2f8;
        --brand-3:#c3d2fb;
        --brand-soft:#182747;
        --brand-line:#2c4174;

        --cta:#F59E0B;
        --cta-2:#fbb62f;
        --cta-soft:#33260d;

        --ink:#e9eefb;
        --ink-2:#c2cbdd;
        --ink-3:#94a2bd;
        --ink-4:#75839f;

        --bg:#0b1120;
        --bg-soft:#101a30;
        --bg-2:#16223d;
        --panel:#111c33;

        --line:#25324f;
        --line-2:#1c2842;

        --ok:#4ade80;
        --ok-soft:#12291c;

        --shadow-sm:0 1px 2px rgba(0,0,0,.4);
        --shadow:0 10px 30px rgba(0,0,0,.45);
        --shadow-lg:0 22px 60px rgba(0,0,0,.55);
    }
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
    margin:0;
    background:var(--bg);
    color:var(--ink-2);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans",sans-serif;
    font-size:17px;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
}
html[lang^="zh"] body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Roboto,Helvetica,Arial,sans-serif;
}
img,video,svg{max-width:100%}
img{height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0 0 .55em;letter-spacing:-.015em;font-weight:800}
h1{font-size:clamp(2rem,5.2vw,3.35rem);font-weight:900;letter-spacing:-.03em}
h2{font-size:clamp(1.55rem,3.3vw,2.3rem)}
h3{font-size:1.16rem}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.3em}
li{margin-bottom:.45em}
strong{color:var(--ink);font-weight:700}
:focus-visible{outline:3px solid var(--cta);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
.narrow{max-width:820px;margin-left:auto;margin-right:auto}
.section{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:52px 0}
.section--dark{background:linear-gradient(160deg,var(--brand-3),#0d1c47);color:#cfd9f5}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-head p{color:var(--ink-3);margin:0}
.section--dark .section-head p{color:#b9c6ea}
.eyebrow{
    display:inline-block;margin-bottom:14px;padding:5px 13px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line);
    font-size:.78rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;
}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#dbe4ff;border-color:rgba(255,255,255,.22)}
.lead{font-size:1.1rem;color:var(--ink-2)}
.muted{color:var(--ink-3)}
.center{text-align:center}
.mb0{margin-bottom:0}

/* ---------- 按钮 ---------- */
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    padding:13px 26px;border-radius:var(--radius);border:1px solid transparent;
    font-size:1rem;font-weight:700;cursor:pointer;text-align:center;
    transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--cta);color:#3a2503;box-shadow:0 8px 22px rgba(245,158,11,.32)}
.btn-primary:hover{background:var(--cta-2);color:#3a2503;transform:translateY(-2px);box-shadow:0 14px 32px rgba(245,158,11,.4)}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--brand-2);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:#fff;color:var(--brand-3);border-color:#fff;transform:translateY(-2px)}
.btn-line{background:var(--panel);color:var(--ink);border-color:var(--line)}
.btn-line:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-lg{padding:16px 32px;font-size:1.05rem}
.btn-sm{padding:9px 18px;font-size:.92rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:13px}
.btn-row.center{justify-content:center}

/* ---------- 语言提示条 ---------- */
.lang-notice{
    display:none;background:var(--brand-3);color:#e4ebff;
    font-size:.94rem;
}
.lang-notice.is-on{display:block}
.lang-notice .container{display:flex;align-items:center;gap:14px;padding-top:9px;padding-bottom:9px}
.lang-notice a{color:#fff;font-weight:700;text-decoration:underline;text-underline-offset:3px}
.lang-notice p{margin:0;flex:1}
.lang-notice button{
    flex:none;background:transparent;border:0;color:#a8bbec;cursor:pointer;
    font-size:1.35rem;line-height:1;padding:2px 6px;border-radius:6px;
}
.lang-notice button:hover{color:#fff;background:rgba(255,255,255,.12)}

/* ---------- 页头 ---------- */
.site-header{
    position:sticky;top:0;z-index:60;
    background:transparent;border-bottom:1px solid transparent;
    transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header .container{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:#fff;font-weight:900;font-size:1.2rem;letter-spacing:-.02em}
.brand:hover{color:#fff}
.brand-mark{
    width:38px;height:38px;border-radius:10px;flex:none;display:grid;place-items:center;
    background:linear-gradient(140deg,var(--cta),#fbbf24);color:#3a2503;
    box-shadow:0 6px 18px rgba(245,158,11,.35);transition:transform .35s var(--ease);
}
.brand-mark svg{width:21px;height:21px}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text small{font-size:.6rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;opacity:.72}

.nav{margin-left:auto;display:none;align-items:center;gap:22px}
/* 首屏视频亮的时候，白字靠这层阴影保持可读；页头变不透明后取消 */
.site-header:not(.is-solid):not([data-solid]) .brand,
.site-header:not(.is-solid):not([data-solid]) .nav a,
.site-header:not(.is-solid):not([data-solid]) .nav-lang,
.site-header:not(.is-solid):not([data-solid]) .nav-toggle{text-shadow:0 1px 10px rgba(4,10,28,.75)}
.nav a{position:relative;white-space:nowrap;color:rgba(255,255,255,.86);font-size:.96rem;font-weight:600;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--cta);transition:right .28s var(--ease)}
.nav a:hover,.nav a[aria-current="page"]{color:#fff}
.nav a:hover::after,.nav a[aria-current="page"]::after{right:0}

.nav-cta{display:none;align-items:center;gap:9px;flex:none}
.nav-lang{
    display:inline-flex;align-items:center;padding:7px 12px;border-radius:var(--radius);
    border:1px solid rgba(255,255,255,.45);color:#fff;font-size:.85rem;font-weight:700;letter-spacing:.03em;
}
.nav-lang:hover{color:var(--brand-3);background:#fff;border-color:#fff}

/* 滚过首屏 / 内页：不透明 */
.site-header.is-solid,.site-header[data-solid]{
    background:var(--panel);border-bottom-color:var(--line-2);box-shadow:0 4px 22px rgba(15,23,42,.08);
}
.site-header.is-solid .brand,.site-header[data-solid] .brand{color:var(--ink)}
.site-header.is-solid .nav a,.site-header[data-solid] .nav a{color:var(--ink-2)}
.site-header.is-solid .nav a:hover,.site-header.is-solid .nav a[aria-current="page"],
.site-header[data-solid] .nav a:hover,.site-header[data-solid] .nav a[aria-current="page"]{color:var(--brand)}
.site-header.is-solid .nav-lang,.site-header[data-solid] .nav-lang{color:var(--ink-2);border-color:var(--line)}
.site-header.is-solid .nav-lang:hover,.site-header[data-solid] .nav-lang:hover{color:#fff;background:var(--brand);border-color:var(--brand)}
.site-header.is-solid .btn-ghost,.site-header[data-solid] .btn-ghost{background:var(--panel);color:var(--ink);border-color:var(--line)}
.site-header.is-solid .btn-ghost:hover,.site-header[data-solid] .btn-ghost:hover{color:var(--brand);border-color:var(--brand);background:var(--panel)}
.site-header.is-solid .nav-toggle,.site-header[data-solid] .nav-toggle{color:var(--ink);border-color:var(--line)}

/* 汉堡按钮：只在手机端出现，图标旁必须有「菜单 / Menu」 */
.nav-toggle{
    margin-left:auto;display:inline-flex;align-items:center;gap:8px;
    padding:9px 14px;border-radius:var(--radius);border:1px solid rgba(255,255,255,.45);
    background:transparent;color:#fff;font:700 .92rem/1 inherit;cursor:pointer;
}
.nav-toggle .bars{display:grid;gap:4px;width:17px}
.nav-toggle .bars i{display:block;height:2px;background:currentColor;border-radius:2px;transition:transform .3s var(--ease),opacity .25s var(--ease)}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.nav-drawer{
    display:none;position:sticky;top:var(--header-h);z-index:59;
    background:var(--panel);border-bottom:1px solid var(--line-2);
    padding:12px 22px 20px;box-shadow:var(--shadow);
}
.nav-drawer.is-open{display:block;animation:drawerIn .28s var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.nav-drawer a{display:block;padding:12px 2px;border-bottom:1px solid var(--line-2);color:var(--ink);font-weight:700}
.nav-drawer a:last-of-type{border-bottom:0}
.nav-drawer .drawer-cta{display:grid;gap:10px;margin-top:14px}
.nav-drawer .drawer-cta a{display:inline-flex;border-bottom:0;padding:14px 22px}

/* 手机底部固定导航 */
.bottom-nav{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:58;
    grid-template-columns:repeat(5,1fr);
    background:var(--panel);border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -4px 20px rgba(15,23,42,.09);
}
.bottom-nav a{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    padding:9px 2px;color:var(--ink-3);font-size:.68rem;font-weight:700;
}
.bottom-nav svg{width:20px;height:20px}
.bottom-nav a[aria-current="page"],.bottom-nav a:hover{color:var(--brand)}

/* ---------- 首屏 ---------- */
.hero{
    position:relative;overflow:hidden;isolation:isolate;
    margin-top:calc(-1 * var(--header-h));padding:calc(var(--header-h) + 74px) 0 84px;
    min-height:min(88vh,760px);display:flex;align-items:center;
    background:var(--brand-3);
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media video{width:100%;height:100%;object-fit:cover;display:block}
.hero-mask{position:absolute;inset:0;z-index:1;background:#060c1f;opacity:.2}
.hero .container{position:relative;z-index:2}
.hero h1{color:#fff;max-width:15em;text-shadow:0 2px 26px rgba(4,10,28,.6)}
.hero .lead{color:#fff;max-width:33em;font-size:1.16rem;text-shadow:0 1px 16px rgba(4,10,28,.65)}
.hero-badge{
    display:inline-flex;align-items:center;gap:9px;margin-bottom:20px;
    padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.16);
    border:1px solid rgba(255,255,255,.38);backdrop-filter:blur(8px);
    color:#fff;font-size:.85rem;font-weight:700;text-shadow:0 1px 10px rgba(4,10,28,.5);
}
.hero-badge svg{width:15px;height:15px;color:var(--cta)}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.3)}
.hero-facts div{display:flex;align-items:center;gap:8px;color:#fff;font-size:.95rem;font-weight:600;text-shadow:0 1px 12px rgba(4,10,28,.6)}
.hero-facts svg{width:17px;height:17px;color:var(--cta);flex:none}
.scroll-hint{
    position:absolute;left:50%;bottom:20px;transform:translateX(-50%);z-index:2;
    display:none;flex-direction:column;align-items:center;gap:7px;
    color:rgba(255,255,255,.85);font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;
}
.scroll-hint span{width:1px;height:32px;background:linear-gradient(#fff,transparent);animation:scrollPulse 1.9s var(--ease) infinite}
@keyframes scrollPulse{0%{opacity:.15;transform:scaleY(.4)}50%{opacity:1;transform:scaleY(1)}100%{opacity:.15;transform:scaleY(.4)}}

/* 内页页头条 */
.page-head{
    background:linear-gradient(155deg,var(--brand-3),#12234f 60%,#1b3271);
    color:#c9d6f5;padding:56px 0 52px;
}
.page-head h1{color:#fff;margin-bottom:.35em}
.page-head p{color:#c3d1f2;max-width:44em;margin:0;font-size:1.06rem}
.crumbs{margin-bottom:14px;font-size:.86rem;color:#9fb2e0}
.crumbs a{color:#c9d6f5}
.crumbs a:hover{color:#fff}
.crumbs span{margin:0 7px;opacity:.55}

/* ---------- 入口卡片 ---------- */
.entry-cards{display:grid;gap:18px;grid-template-columns:1fr}
.entry-card{
    position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px 22px;box-shadow:var(--shadow-sm);overflow:hidden;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.entry-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:linear-gradient(90deg,var(--brand),var(--cta));transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.entry-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.entry-card:hover::before{transform:scaleX(1)}
.entry-icon{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);margin-bottom:15px;transition:transform .3s var(--ease)}
.entry-icon svg{width:22px;height:22px}
.entry-card:hover .entry-icon{transform:translateY(-3px) scale(1.07)}
.entry-card h3{margin-bottom:.4em}
.entry-card p{color:var(--ink-3);font-size:.95rem;margin:0}
.entry-card .go{margin-top:13px;display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:.9rem;color:var(--brand)}
.entry-card .go svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.entry-card:hover .go svg{transform:translateX(4px)}
/* 整卡片可点：链接铺满整张卡 */
.stretch::after{content:"";position:absolute;inset:0;z-index:3}

/* ---------- 痛点条 ---------- */
.pains{display:grid;gap:16px;grid-template-columns:1fr}
.pain{
    display:flex;gap:14px;align-items:flex-start;
    background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--cta);
    border-radius:var(--radius);padding:20px 20px;box-shadow:var(--shadow-sm);
}
.pain svg{width:22px;height:22px;color:var(--cta);flex:none;margin-top:3px}
.pain p{margin:0;color:var(--ink);font-weight:700;font-size:1.02rem;line-height:1.5}
.pain small{display:block;margin-top:6px;color:var(--ink-3);font-weight:500;font-size:.9rem;line-height:1.6}

/* ---------- 通用卡片网格 ---------- */
.grid{display:grid;gap:20px;grid-template-columns:1fr}
.card{
    position:relative;display:flex;flex-direction:column;
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 24px;box-shadow:var(--shadow-sm);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.card h3{margin-bottom:.45em}
.card p{color:var(--ink-3);margin:0}
.card-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);margin-bottom:16px}
.card-icon svg{width:23px;height:23px}
.card-icon.is-cta{background:var(--cta-soft);color:var(--cta-2)}
.card-more{margin-top:auto;padding-top:15px;display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:.92rem;color:var(--brand)}
.card-more svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.card:hover .card-more svg{transform:translateX(4px)}
.section--dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14)}
.section--dark .card p{color:#b9c6ea}
.section--dark .card-icon{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 三步 ---------- */
.steps{display:grid;gap:20px;grid-template-columns:1fr;counter-reset:step}
.step{
    position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 24px;box-shadow:var(--shadow-sm);counter-increment:step;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.step-num{
    width:42px;height:42px;border-radius:11px;display:grid;place-items:center;margin-bottom:15px;
    background:var(--brand);color:#fff;font-weight:900;font-size:1.05rem;
}
.step-num::before{content:counter(step,decimal-leading-zero)}
.step h3{margin-bottom:.4em}
.step p{color:var(--ink-3);margin:0}

/* ---------- 代码块 ---------- */
.codeblock{
    background:#0d1730;color:#dbe6ff;border-radius:var(--radius);border:1px solid #1c2b52;
    padding:18px 20px;overflow-x:auto;font:500 .88rem/1.75 ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
    box-shadow:var(--shadow);
}
.codeblock code{white-space:pre;display:block}
.codeblock .t{color:#7dd3fc}
.codeblock .a{color:#fbbf24}
.codeblock .v{color:#a7f3d0}
.code-note{margin-top:12px;font-size:.9rem;color:var(--ink-3);text-align:center}

/* ---------- 行业选择器 ---------- */
.picker-tabs{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:26px}
.picker-tab{
    padding:9px 17px;border-radius:999px;border:1px solid var(--line);background:var(--panel);
    color:var(--ink-2);font:700 .93rem/1.2 inherit;cursor:pointer;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.picker-tab:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.picker-tab[aria-selected="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.picker-panel{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow);overflow:hidden;
}
.picker-head{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between;
    padding:16px 22px;background:var(--bg-soft);border-bottom:1px solid var(--line-2);
}
.picker-head strong{font-size:1.05rem}
.picker-head span{font-size:.88rem;color:var(--ink-3)}
.picker-groups{display:grid;gap:0;grid-template-columns:1fr}
.picker-group{padding:20px 22px;border-bottom:1px solid var(--line-2)}
.picker-group:last-child{border-bottom:0}
.picker-group h4{
    margin:0 0 12px;font-size:.79rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase;color:var(--brand);
}
.picker-group ul{list-style:none;margin:0;padding:0}
.picker-group li{
    display:flex;align-items:baseline;justify-content:space-between;gap:12px;
    padding:8px 0;border-bottom:1px dashed var(--line-2);margin:0;
    font-size:.97rem;
}
.picker-group li:last-child{border-bottom:0}
.picker-group li b{color:var(--ink);font-weight:600}
.picker-group li em{
    flex:none;font-style:normal;font-size:.83rem;font-weight:700;color:var(--ink-3);
    background:var(--bg-soft);border:1px solid var(--line-2);border-radius:999px;padding:2px 10px;
}
.picker-foot{padding:16px 22px;background:var(--brand-soft);border-top:1px solid var(--brand-line);font-size:.93rem;color:var(--ink-2)}
.picker-foot strong{color:var(--brand)}

/* ---------- 预设表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow-sm)}
table.preset{width:100%;border-collapse:collapse;min-width:520px;font-size:.97rem}
table.preset th,table.preset td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-2)}
table.preset thead th{background:var(--bg-soft);color:var(--ink);font-size:.79rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
table.preset tbody tr:last-child td{border-bottom:0}
table.preset tbody tr:hover{background:var(--bg-soft)}
table.preset td:first-child{color:var(--brand);font-weight:700;white-space:nowrap}
table.preset td:last-child,table.preset th:last-child{text-align:right;color:var(--ink-3);white-space:nowrap}
.table-note{margin-top:12px;font-size:.92rem;color:var(--ink-3)}

/* ---------- 左右分栏（图文等高） ---------- */
/* grid/flex 子项默认 min-width:auto，内容撑不下就会把整页撑宽。
   下面这些容器统一放开，窄屏才不会出现横向滚动条。 */
.split > *,.demo-layout > *,.contact-layout > *,.grid > *,.entry-cards > *,.price-grid > *{min-width:0}
.split{display:grid;grid-template-columns:1fr;gap:26px;align-items:stretch}
.split + .split{margin-top:48px}
.split-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    background:var(--bg-2);box-shadow:var(--shadow);min-height:260px;
    display:flex;align-items:center;justify-content:center;padding:24px;
}
.split-body{display:flex;flex-direction:column;justify-content:center}
.split-body h2{margin-bottom:.5em}

/* ---------- 产品示意（纯 CSS，不用假截图） ---------- */
.mock{
    width:100%;max-width:400px;background:var(--panel);border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;font-size:.9rem;
}
.mock-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:var(--bg-soft);border-bottom:1px solid var(--line-2)}
.mock-bar i{width:9px;height:9px;border-radius:50%;background:var(--line);display:block}
.mock-bar span{margin-left:8px;font-size:.76rem;color:var(--ink-4);font-weight:700;letter-spacing:.04em}
.mock-body{padding:16px 16px 18px}
.mock-title{font-weight:800;color:var(--ink);margin-bottom:12px;font-size:.98rem}
.mock-cat{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin:14px 0 7px}
.mock-cat:first-of-type{margin-top:0}
.mock-item{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:9px 12px;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:7px;
    background:var(--panel);
}
.mock-item.is-on{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 2px var(--brand-soft)}
.mock-item b{font-weight:600;color:var(--ink)}
.mock-item span{font-size:.8rem;color:var(--ink-3);flex:none}
.mock-slots{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:12px}
.mock-slot{
    padding:7px 2px;text-align:center;border:1px solid var(--line);border-radius:6px;
    font-size:.78rem;font-weight:700;color:var(--ink-2);background:var(--panel);
}
.mock-slot.is-on{background:var(--brand);border-color:var(--brand);color:#fff}
.mock-slot.is-off{color:var(--ink-4);text-decoration:line-through;background:var(--bg-soft)}
.mock-cta{margin-top:14px;padding:11px;border-radius:var(--radius);background:var(--cta);color:#3a2503;text-align:center;font-weight:800}
.mock-rows{display:grid;gap:8px}
.mock-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius)}
.mock-row .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.mock-row b{font-weight:700;color:var(--ink);font-size:.9rem}
.mock-row small{color:var(--ink-3);font-size:.8rem;margin-left:auto;flex:none}
.mock-caption{margin-top:14px;text-align:center;font-size:.85rem;color:var(--ink-3)}

/* ---------- 勾选 / 叉号列表 ---------- */
.check-list{list-style:none;padding:0;margin:0}
.check-list li{position:relative;padding-left:31px;margin-bottom:12px;color:var(--ink-2)}
.check-list li::before{
    content:"";position:absolute;left:0;top:.42em;width:19px;height:19px;border-radius:50%;
    background:var(--ok-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315803d' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/12px no-repeat;
}
.section--dark .check-list li{color:#c6d3f0}

/* ---------- 定价 ---------- */
.price-grid{display:grid;grid-template-columns:1fr;gap:20px;align-items:stretch}
.price-card{
    position:relative;display:flex;flex-direction:column;
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:28px 24px;box-shadow:var(--shadow-sm);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease)
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.price-card.is-featured{border-color:var(--brand);box-shadow:var(--shadow)}
.price-flag{
    position:absolute;top:-12px;left:24px;padding:4px 13px;border-radius:999px;
    background:var(--cta);color:#3a2503;font-size:.76rem;font-weight:800;letter-spacing:.05em;
}
.price-name{font-size:1.12rem;font-weight:800;color:var(--ink)}
.price-for{color:var(--ink-3);font-size:.92rem;margin:4px 0 16px}
.price-num{display:flex;align-items:baseline;gap:8px;padding:16px 0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);margin-bottom:18px}
.price-num b{font-size:1.5rem;line-height:1.2;color:var(--brand);font-weight:900;letter-spacing:-.02em}
.price-num span{color:var(--ink-4);font-size:.86rem}
.price-card .check-list{margin-bottom:22px}
.price-card .btn{margin-top:auto}
.included{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:28px 26px;box-shadow:var(--shadow-sm);
}
.included ul{display:grid;grid-template-columns:1fr;gap:0 28px;list-style:none;padding:0;margin:0}

/* ---------- FAQ ---------- */
.faq-group + .faq-group{margin-top:36px}
.faq-group > h3{
    font-size:.82rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);
    margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
.faq-item{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    margin-bottom:11px;box-shadow:var(--shadow-sm);overflow:hidden;
}
.faq-item summary{
    list-style:none;cursor:pointer;padding:16px 50px 16px 20px;position:relative;
    font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
    content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
    border-right:2.4px solid var(--ink-4);border-bottom:2.4px solid var(--ink-4);
    transform:translateY(-70%) rotate(45deg);transition:transform .28s var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-20%) rotate(-135deg)}
.faq-item[open]{border-color:var(--brand-line)}
.faq-answer{padding:0 20px 18px;color:var(--ink-2)}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- 演示页 ---------- */
.demo-note{
    display:flex;gap:12px;align-items:flex-start;
    background:var(--cta-soft);border:1px solid #f5d79a;border-radius:var(--radius);
    padding:16px 18px;margin-bottom:26px;color:#7a4d02;
}
@media (prefers-color-scheme:dark){.demo-note{border-color:#5c4413;color:#f6d79a}}
.demo-note svg{width:21px;height:21px;flex:none;margin-top:3px}
.demo-note p{margin:0;font-size:.97rem;line-height:1.6}
.demo-layout{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
.demo-shop{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow);overflow:hidden;
}
.demo-shop-bar{
    display:flex;align-items:center;gap:11px;padding:14px 20px;
    background:linear-gradient(120deg,#1f3a6d,#2b5aa8);color:#fff;
}
.demo-shop-bar .logo{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.2);display:grid;place-items:center;font-weight:900;flex:none}
.demo-shop-bar b{font-size:1rem;display:block;line-height:1.2}
.demo-shop-bar small{font-size:.75rem;opacity:.8}
.demo-shop-body{padding:22px 20px 26px}
.demo-side{display:grid;gap:20px}
.demo-side .card{padding:22px 20px}

/* ---------- 社会证明位（结构在，不编造数据） ---------- */
.proof{
    border:1px dashed var(--line);border-radius:var(--radius);background:var(--bg-soft);
    padding:30px 26px;text-align:center;color:var(--ink-3);
}
.proof h3{color:var(--ink-2)}
.proof p{margin:0 auto;max-width:46em}

/* ---------- 联系表单 ---------- */
.contact-layout{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
.contact-form{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:26px 24px;box-shadow:var(--shadow);
}
.contact-form label{display:block;font-size:.86rem;font-weight:800;color:var(--ink);margin:0 0 6px}
.field{margin-bottom:16px}
.contact-form input,.contact-form select,.contact-form textarea{
    width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);
    background:var(--bg);color:var(--ink);font:inherit;font-size:1rem;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
    outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.contact-form textarea{min-height:130px;resize:vertical}
.contact-form .captcha-row,.contact-form .captcha-box{margin-bottom:16px}
.contact-form .captcha-row img,.contact-form .captcha-box img{vertical-align:middle;border-radius:6px;border:1px solid var(--line)}
.contact-aside{display:grid;gap:16px}
.contact-item{display:flex;gap:13px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm)}
.contact-item svg{width:21px;height:21px;color:var(--brand);flex:none;margin-top:4px}
.contact-item b{display:block;color:var(--ink);font-size:.94rem}
.contact-item span{color:var(--ink-3);font-size:.94rem}

/* ---------- 底部 CTA ---------- */
.cta-band{
    background:linear-gradient(150deg,var(--brand-3),#1d3a80);
    border-radius:var(--radius-lg);padding:42px 28px;text-align:center;color:#cfd9f5;
    box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;margin-bottom:.4em}
.cta-band p{color:#c0cdee;max-width:40em;margin:0 auto 24px}

/* ---------- 页脚 ---------- */
footer{background:#0a1226;color:#94a3c4;padding:56px 0 30px;margin-top:0}
footer h3{color:#fff;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
footer a{color:#b7c4e2}
footer a:hover{color:#fff}
.footer-content{display:grid;grid-template-columns:1fr;gap:32px;margin-bottom:34px}
.footer-section p{margin:0 0 9px;font-size:.94rem}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;font-weight:900;font-size:1.15rem}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:9px}
.footer-brand .brand-mark svg{width:19px;height:19px}
.footer-bottom{border-top:1px solid #1c2a4a;padding-top:22px;text-align:center;font-size:.88rem}
.footer-bottom p{margin:0 0 7px}
.footer-partner{color:#7f8fb5}
.footer-partner a{color:#b7c4e2}

/* ---------- 滚动进场 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 断点：640 ---------- */
@media (min-width:640px){
    .pains{grid-template-columns:repeat(3,1fr)}
    .entry-cards{grid-template-columns:repeat(2,1fr)}
    .grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(3,1fr)}
    .included ul{grid-template-columns:repeat(2,1fr)}
    .picker-groups{grid-template-columns:repeat(2,1fr)}
    .picker-group{border-right:1px solid var(--line-2)}
    .picker-group:nth-child(2n){border-right:0}
    .cta-band{padding:52px 40px}
}

/* ---------- 断点：768（导航切换） ---------- */
@media (min-width:768px){
    .nav-toggle{display:none}
    .nav-drawer{display:none !important}
    .nav{display:flex;gap:16px;font-size:.9rem}
    .nav-cta{display:flex}
    .section{padding:88px 0}
    .split{grid-template-columns:1fr 1fr}
    .split--flip .split-media{order:2}
    .split--flip .split-body{order:1}
    .contact-layout{grid-template-columns:1.35fr .9fr}
    .demo-layout{grid-template-columns:1.45fr .85fr}
}
@media (max-width:767px){
    .bottom-nav{display:grid}
    body{padding-bottom:66px}
    .nav{display:none}
    .nav-cta{display:none}
}

/* ---------- 断点：900 ---------- */
@media (min-width:900px){
    .entry-cards{grid-template-columns:repeat(4,1fr)}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .grid-4{grid-template-columns:repeat(4,1fr)}
    .price-grid{grid-template-columns:repeat(3,1fr)}
    .picker-groups{grid-template-columns:repeat(4,1fr)}
    .picker-group{border-right:1px solid var(--line-2);border-bottom:0}
    .picker-group:nth-child(2n){border-right:1px solid var(--line-2)}
    .picker-group:last-child{border-right:0}
    .included ul{grid-template-columns:repeat(3,1fr)}
    .footer-content{grid-template-columns:1.5fr 1fr 1fr 1fr}
    .scroll-hint{display:flex}
}

/* ---------- 断点：768–1023 平板紧凑导航 ----------
   菜单项必须全部可见且不换行；空间不够时先收起「登录」按钮，
   而不是让菜单文字折行糊在一起。 */
@media (min-width:768px) and (max-width:1023px){
    .brand{flex-shrink:0}
    .brand-text small{display:none}
    .nav{gap:13px;font-size:.85rem}
    .nav-cta{gap:7px}
    .nav-cta .btn-ghost{display:none}
    .nav-cta .btn-sm{padding:8px 13px;font-size:.85rem}
    .nav-lang{padding:6px 9px;font-size:.8rem}
}

/* ---------- 断点：1024（桌面导航必须完整展开） ---------- */
@media (min-width:1024px){
    .nav{gap:24px;font-size:.96rem}
    .hero{min-height:min(90vh,820px)}
}

/* ---------- 断点：1200 ---------- */
@media (min-width:1200px){
    .container{padding:0 28px}
    .section{padding:100px 0}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
    *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
    .reveal{opacity:1;transform:none}
}

/* ---------- 窄屏防溢出 ----------
   卡片、示意图里的长词和固定宽度块，在 375px 下不能把整页撑宽。 */
.demo-side > *,.card > *,.split-body > *,.contact-aside > *{min-width:0}
.mock{max-width:min(400px,100%)}
.mock-row{flex-wrap:wrap}
.mock-row b,.mock-item b,.picker-group li b,table.preset td{min-width:0;overflow-wrap:anywhere}
.demo-shop,.demo-shop-body,.demo-shop-bar{min-width:0;max-width:100%}
.demo-shop-bar b,.demo-shop-bar small{overflow-wrap:anywhere}

/* ---------- 打印 ---------- */
@media print{
    .site-header,.nav-drawer,.bottom-nav,.lang-notice,.hero-media,.scroll-hint,footer{display:none !important}
    body{padding-bottom:0}
}