/* ============================================================
   兰若情缘资料站 · 全站样式（白色夏日海滨设计稿落码）
   设计 token 全部取自 Ardot 设计稿实测值
   ============================================================ */
:root{
  /* 色板 */
  --bg:#F7F7F0;            /* 页面米白底 */
  --ink:#12304C;           /* 深藏青标题 */
  --body:#41637C;          /* 正文蓝灰 */
  --muted:#6B8CA3;         /* 弱化说明 */
  --cyan:#08BADD;          /* 主色·海蓝 */
  --cyan-deep:#0B8CAA;     /* 深海蓝（链接/强调） */
  --cyan-mid:#0E80A6;      /* 中间蓝（按钮2） */
  --pink:#FF4E7A;          /* 活力粉（CTA） */
  --pink-hero:#FF4D6B;     /* Hero 主按钮 */
  --pink-deep:#A81040;     /* 深粉文字 */
  --pink-soft:#FFF0F4;     /* 粉底色 */
  --pink-bg:#FFF3F6;
  --amber:#FFC75C;         /* 金黄 pill */
  --amber-deep:#9A5B00;    /* 深金文字 */
  --amber-bg:#FFFAF0;
  --purple:#6B4FD8;        /* 挂机紫 */
  --purple-bg:#F2F0FE;
  --card-ice:#F4FCFE;      /* 冰蓝卡底 */
  --card-row:#F7FCFE;      /* 表格斑马纹 */
  --line-pink:#FFD9E2;
  --line-cyan:#B8E8F5;
  --line-amber:#FFD9A8;
  --footer-bg:#12304C;
  --footer-card:#0D2439;
  --footer-txt:#C9D8E4;
  --footer-dim:#9FB6C7;
  /* 尺寸 */
  --w:1200px;
  --r-lg:24px; --r-md:20px; --r-sm:16px;
  --sec-y:56px;            /* 区块垂直节奏 */
  --gap:36px;              /* 标题→内容 */
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--body);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:var(--cyan-deep);text-decoration:none}
a:hover{opacity:.85}
ul{list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px 14px;z-index:99;border-radius:8px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- 版心 ---------- */
.shell{max-width:var(--w);margin:0 auto;padding:0 24px}

/* ---------- 顶部公告 ---------- */
.topline{background:var(--cyan);color:#fff;font-size:13px}
.topline .shell{display:flex;align-items:center;gap:14px;padding-top:10px;padding-bottom:10px}
.topline .tag{font-weight:700;font-size:12px;flex:none}
.topline p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topline .tel{flex:none;color:#D9F4FB}

/* ---------- 导航 ---------- */
.nav{background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 1px 0 rgba(18,48,76,.06)}
.nav .shell{display:flex;align-items:center;gap:32px;padding-top:18px;padding-bottom:18px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:44px;height:44px;border-radius:12px}
.brand b{display:block;font-size:20px;font-weight:900;color:var(--ink);line-height:1.2}
.brand i{display:block;font-style:normal;font-size:11px;color:var(--muted);font-weight:500}
.nav-links{display:flex;gap:26px;flex:1;flex-wrap:wrap}
.nav-links a{font-size:15px;color:#41637C}
.nav-links a.active{color:var(--cyan-deep);font-weight:700}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:0;cursor:pointer;font-family:var(--font);font-weight:700;transition:transform .15s,box-shadow .15s;text-align:center}
.btn:hover{transform:translateY(-1px)}
.btn-cyan{background:var(--cyan);color:#fff}
.btn-pink{background:var(--pink);color:#fff;box-shadow:0 10px 28px rgba(255,78,122,.4)}
.btn-pink:hover{box-shadow:0 12px 32px rgba(255,78,122,.5)}
.btn-white{background:#fff;color:var(--cyan-deep)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.65)}
.btn-outline{background:#fff;color:var(--cyan-deep);border:1.5px solid var(--cyan)}
.btn-nav{padding:12px 26px;font-size:15px}
.nav-burger{display:none}

/* ---------- 内页页头 ---------- */
.page-head{background:var(--cyan);color:#fff;padding:64px 0 72px}
.page-head .shell{display:grid;gap:16px}
.page-head .eyebrow{font-size:14px;font-weight:700;color:#D9F4FB;letter-spacing:.08em}
.page-head h1{font-size:54px;font-weight:900;color:#fff}
.page-head p{font-size:16px;color:#D9F4FB;max-width:860px}
.page-head--pink{background:var(--pink)} .page-head--pink .eyebrow,.page-head--pink p{color:#FFE1E8}
.page-head--dark{background:var(--ink)} .page-head--dark .eyebrow{color:#8FD8EC}
.page-head--dark p{color:var(--footer-dim)}

/* ---------- 区块 ---------- */
.section{padding:var(--sec-y) 0}
.section--tint{background:var(--bg)}
.sec-head{display:grid;gap:14px;margin-bottom:var(--gap)}
.sec-head .eyebrow{font-size:13px;font-weight:700;letter-spacing:.06em}
.sec-head h2{font-size:42px;font-weight:900}
.sec-head .lead{font-size:16px;max-width:860px}
.eyebrow--cyan{color:var(--cyan)} .eyebrow--pink{color:#C43069} .eyebrow--amber{color:var(--amber-deep)}
.lead{color:var(--body)}

/* ---------- Hero（首页） ---------- */
.hero{position:relative;height:auto;min-height:680px;background:#0A3352;overflow:hidden;color:#fff}
/* Hero 响应式背景：移动端 960w / 桌面 1920w，WebP 优先、JPG 兜底（image-set 不识别时自动回退到 url()） */
.hero-bg{position:absolute;inset:0;background:url("../img/ai/hero-960.jpg") center/cover no-repeat;background-image:-webkit-image-set(url("../img/ai/hero-960.webp") type("image/webp"),url("../img/ai/hero-960.jpg") type("image/jpeg"));background-image:image-set(url("../img/ai/hero-960.webp") type("image/webp"),url("../img/ai/hero-960.jpg") type("image/jpeg"));background-position:center;background-size:cover;background-repeat:no-repeat}
@media (min-width:900px){.hero-bg{background-image:url("../img/ai/hero-1920.jpg");background-image:-webkit-image-set(url("../img/ai/hero-1920.webp") type("image/webp"),url("../img/ai/hero-1920.jpg") type("image/jpeg"));background-image:image-set(url("../img/ai/hero-1920.webp") type("image/webp"),url("../img/ai/hero-1920.jpg") type("image/jpeg"))}}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,23,46,.95) 0%,rgba(5,23,46,.55) 45%,rgba(5,23,46,.08) 100%)}
.hero-fade{position:absolute;left:0;right:0;bottom:0;height:90px;background:linear-gradient(to top,#F7F7F0,rgba(247,247,240,0))}
.hero-inner{position:relative;z-index:2;max-width:var(--w);margin:0 auto;padding:190px 24px 120px}
.hero-pill{display:inline-block;background:var(--amber);color:var(--ink);font-size:14px;font-weight:700;padding:9px 18px;border-radius:999px}
.hero h1{font-size:64px;line-height:84px;font-weight:900;color:#fff;margin-top:20px}
.hero .sub{font-size:16px;line-height:27px;font-weight:500;margin-top:20px;max-width:620px}
.hero-cta{display:flex;gap:16px;margin-top:28px;flex-wrap:wrap}
.hero-cta .btn{font-size:17px;padding:17px 34px}
.hero-stats{display:flex;gap:48px;margin-top:44px;flex-wrap:wrap}
.hero-stats small{display:block;font-size:12px;color:#E6F6FC}
.hero-stats b{display:block;font-size:24px;font-weight:900;margin-top:4px}
.hero-stats .hl{color:var(--amber)}

/* ---------- 通用卡片 ---------- */
.card{background:#fff;border-radius:var(--r-md)}
.card--ice{background:var(--card-ice)}
.card--line{border:1px solid var(--line-cyan)}

/* ---------- 换算器（紧凑条） ---------- */
.calc-chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{background:#fff;border:1.5px solid var(--line-cyan);color:var(--cyan-deep);font-size:14px;font-weight:700;padding:9px 18px;border-radius:999px;cursor:pointer;font-family:var(--font)}
.chip.active,.chip:hover{background:var(--cyan);border-color:var(--cyan);color:#fff}

/* ---------- 礼包卡 ---------- */
.gift-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.gift{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 28px;background:#fff;border:1px solid var(--line-pink);border-radius:var(--r-md)}
.gift:nth-child(n+3){border-color:var(--line-cyan)}
.gift:last-child{border-color:var(--line-amber)}
.gift h3{font-size:20px;font-weight:700}
.gift p{font-size:13px;color:var(--muted);margin-top:3px}
.code-btn{flex:none;background:var(--cyan);color:#fff;font-size:17px;font-weight:700;padding:12px 22px;border-radius:999px;border:0;cursor:pointer;font-family:var(--font);letter-spacing:.04em}
.code-btn--teal{background:var(--cyan-mid)}
.code-btn--amber{background:#B87800}
.code-btn:hover{opacity:.9}
.code-btn.copied{background:#1FBF83}

/* ---------- 入口条（首页） ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.entry{display:block;background:#fff;border:1px solid var(--line-cyan);border-radius:var(--r-md);padding:26px 26px 24px;transition:transform .15s,box-shadow .15s}
.entry:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(18,48,76,.10)}
.entry .cat{font-size:13px;font-weight:700;letter-spacing:.05em}
.entry h3{font-size:19px;margin-top:6px}
.entry p{font-size:13px;color:var(--muted);margin-top:6px;min-height:44px}
.entry .more{display:inline-block;margin-top:10px;font-size:14px;font-weight:700;color:var(--cyan-deep)}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--cyan);text-align:center;padding:64px 0;color:#fff}
.cta-band h2{font-size:44px;font-weight:900;color:#fff}
.cta-band p{font-size:17px;color:#D9F4FB;margin-top:14px}
.cta-band .row{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.cta-band .btn{padding:17px 36px;font-size:17px}
.cta-band .btn-white{color:var(--cyan-deep)}

/* ---------- 页脚 ---------- */
footer{background:var(--footer-bg);color:var(--footer-txt);padding:64px 0 32px}
.foot-grid{display:grid;grid-template-columns:408fr 216fr 216fr 216fr;gap:48px}
.foot-brand{display:flex;align-items:center;gap:12px}
.foot-brand img{width:42px;height:42px;border-radius:12px}
.foot-brand b{font-size:19px;color:#fff;font-weight:700}
.foot-about{font-size:13px;line-height:1.8;color:var(--footer-dim);margin-top:14px}
.foot-col h4{font-size:15px;font-weight:700;color:var(--cyan);margin-bottom:12px}
.foot-col a{display:block;font-size:14px;line-height:2;color:var(--footer-txt)}
.foot-col a:hover{color:#fff}
.health{background:var(--footer-card);border-radius:14px;padding:20px 24px;margin-top:40px;font-size:13px;line-height:1.8;color:#8FA9BD}
.copyright{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;margin-top:20px;font-size:12px;color:#7C94A9}

/* ---------- 游戏特色 ---------- */
.feat-row{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}
.feat{border-radius:22px;padding:32px 34px;display:grid;gap:14px;align-content:start}
.feat .no{font-size:38px;font-weight:900;line-height:1}
.feat h3{font-size:25px;font-weight:900}
.feat p{font-size:14px;line-height:1.85}
.feat .pts{background:#fff;border-radius:14px;padding:14px 18px;font-size:13px;font-weight:500;line-height:1.8}
.feat--ice{background:var(--card-ice)} .feat--ice .no,.feat--ice .pts{color:var(--cyan)}
.feat--pink{background:var(--pink-bg)} .feat--pink .no,.feat--pink .pts{color:#C43069}
.feat--amber{background:var(--amber-bg)} .feat--amber .no,.feat--amber .pts{color:var(--amber-deep)}
.feat--purple{background:var(--purple-bg)} .feat--purple .no,.feat--purple .pts{color:var(--purple)}

/* ---------- 首页特色六宫格（主卖点） ---------- */
.mini-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mfeat{border-radius:22px;padding:26px 28px;display:grid;gap:9px;align-content:start}
.mfeat .no{font-size:13px;font-weight:900;letter-spacing:.08em}
.mfeat h3{font-size:20px;font-weight:900}
.mfeat p{font-size:13px;line-height:1.75;color:var(--muted)}
.mfeat .more{font-size:13px;font-weight:700;color:var(--cyan-deep);margin-top:2px}
.mfeat--ice{background:var(--card-ice)} .mfeat--ice .no{color:var(--cyan)}
.mfeat--pink{background:var(--pink-bg)} .mfeat--pink .no{color:#C43069}
.mfeat--amber{background:var(--amber-bg)} .mfeat--amber .no{color:var(--amber-deep)}
.mfeat--purple{background:var(--purple-bg)} .mfeat--purple .no{color:var(--purple)}
.feat-more{margin-top:28px}

/* ---------- 紧凑折扣换算条（小优势，跟在礼包码后） ---------- */
.calc-bar{margin-top:24px;display:grid;grid-template-columns:minmax(0,1fr) 360px;background:#fff;border:1px solid var(--line-cyan);border-radius:var(--r-lg);overflow:hidden}
.cb-in{padding:28px 32px;display:grid;gap:14px;align-content:center}
.cb-in label{font-size:14px;font-weight:700}
.cb-field{display:flex;align-items:center;gap:10px;background:var(--card-ice);border:1.5px solid #8FD8EC;border-radius:var(--r-sm);height:54px;padding:0 18px}
.cb-field input{border:0;outline:0;font-family:var(--font);font-size:24px;font-weight:900;color:var(--ink);width:100%;background:transparent;min-width:0}
.cb-field span{font-size:14px;font-weight:500;color:#6B8CA3;flex:none}
.cb-out{background:var(--cyan);color:#fff;padding:24px 32px;display:grid;gap:6px;align-content:center}
.cb-out h3{color:#D9F4FB;font-size:13px;font-weight:700}
.cb-out .num{font-size:38px;font-weight:900;line-height:1.15;color:#fff;word-break:break-all}
.cb-out p{font-size:13px;font-weight:500;color:#D9F4FB}

/* ---------- 游戏截图 ---------- */
.shot-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.shot{background:#fff;border-radius:var(--r-md);overflow:hidden;cursor:zoom-in;border:0;padding:0;text-align:left;font-family:var(--font)}
.shot img{width:100%;aspect-ratio:360/450;object-fit:cover}
.shot figcaption{padding:18px 20px}
.shot h3{font-size:17px;font-weight:700}
.shot p{font-size:12px;color:var(--muted);margin-top:4px}
.poster-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.poster{border-radius:18px;overflow:hidden;cursor:zoom-in;border:0;padding:0;text-align:left;font-family:var(--font)}
.poster img{width:100%;aspect-ratio:375/675;object-fit:cover}
.poster figcaption{padding:14px 16px;color:#fff}
.poster figcaption b{display:block;font-size:14px;font-weight:700}
.poster figcaption span{display:block;font-size:11px;margin-top:3px;opacity:.85}
.cap-cyan{background:#0E80A6}.cap-pink{background:#D94468}.cap-amber{background:#B87800}
.cap-purple{background:#5B3FB8}.cap-green{background:#1E7A5C}

/* ---------- 活动与 VIP ---------- */
.event-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.event{background:#fff;border-radius:var(--r-md);padding:28px 30px;display:grid;gap:14px;align-content:start}
.event--pink{background:var(--pink-bg);border:1px solid #FFB9CB}
.event h3{font-size:23px;font-weight:700}
.event .badge{display:inline-block;background:#E4F7FC;color:var(--cyan-deep);font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;vertical-align:middle}
.event--pink .badge{background:var(--pink);color:#fff}
.event--server .badge{background:#FFEDD4;color:var(--amber-deep)}
.event p{font-size:14px;line-height:1.75}
.event .tiers{font-size:13px;font-weight:500;line-height:1.85;color:var(--cyan-deep)}
.event--pink h3,.event--pink .tiers{color:var(--pink-deep)}
.event--pink p{color:#7A1030}
.event--server .tiers{color:var(--amber-deep)}
.vip-table{background:#fff;border-radius:var(--r-lg);padding:34px 36px 38px}
.vip-table h3{font-size:27px;font-weight:900}
.vip-table .note{font-size:14px;color:var(--muted);margin:8px 0 20px}
.vip-table table{width:100%;border-collapse:separate;border-spacing:0 8px}
.vip-table thead th{background:var(--cyan);color:#fff;font-size:15px;font-weight:700;text-align:left;padding:14px 20px}
.vip-table thead th:first-child{border-radius:10px 0 0 10px}
.vip-table thead th:last-child{border-radius:0 10px 10px 0;color:#FFE8A6}
.vip-table tbody td{font-size:14px;padding:12px 20px;background:var(--card-row)}
.vip-table tbody tr:nth-child(even) td{background:#fff}
.vip-table tbody td:first-child{border-radius:10px 0 0 10px;font-weight:500}
.vip-table tbody td:last-child{border-radius:0 10px 10px 0;font-size:15px;font-weight:700;color:var(--pink)}
.vip-table tr.vip-max td{background:var(--pink-bg);color:var(--pink-deep);font-weight:700}
.vip-table tr.vip-max td:last-child{font-size:16px}

/* ---------- 新手指南 ---------- */
.step{display:flex;gap:32px;border-radius:22px;padding:34px 38px;margin-bottom:20px}
.step .no{font-size:52px;font-weight:900;line-height:1;flex:none;width:90px}
.step h3{font-size:25px;font-weight:900}
.step p{font-size:14px;line-height:1.85;margin-top:10px;max-width:1120px}
.step--ice{background:var(--card-ice)} .step--ice .no{color:var(--cyan)}
.step--pink{background:var(--pink-bg)} .step--pink .no{color:var(--pink)}
.step--amber{background:var(--amber-bg)} .step--amber .no{color:#D99400}
.step--purple{background:var(--purple-bg)} .step--purple .no{color:var(--purple)}
.warn-card{background:var(--bg);border:1px solid var(--line-amber);border-radius:var(--r-md);padding:28px 32px}
.warn-card h3{font-size:20px;font-weight:900;color:var(--amber-deep)}
.warn-card p{font-size:14px;line-height:1.9;margin-top:10px;color:#7A5920}

/* ---------- 下载中心 ---------- */
.dl-cols{display:grid;grid-template-columns:736fr 460fr;gap:24px;align-items:start}
.dl-card{background:#fff;border-radius:var(--r-lg);padding:40px 42px;display:grid;gap:22px;justify-items:start}
.dl-card .pill{background:#E4F7FC;color:var(--cyan-deep);font-size:13px;font-weight:700;padding:6px 16px;border-radius:999px}
.dl-card h2{font-size:30px;font-weight:900}
.dl-card .desc{font-size:15px;line-height:1.8}
.spec-chips{display:flex;flex-wrap:wrap;gap:12px}
.spec{background:var(--card-ice);border-radius:12px;padding:12px 16px;min-width:96px}
.spec small{display:block;font-size:11px;color:var(--muted)}
.spec b{display:block;font-size:16px;color:var(--ink);margin-top:2px}
.dl-btns{display:flex;gap:14px;flex-wrap:wrap}
.dl-btns .btn{padding:18px 36px;font-size:17px}
.dl-btns .btn-outline{padding:17px 30px;font-size:16px}
.verify{background:var(--bg);border-radius:14px;padding:16px 20px;font-size:13px;line-height:1.75}
.verify b{display:block;color:var(--amber-deep);font-size:14px;margin-bottom:5px}
.verify,.verify p{color:#7A5920}
.qr-card{background:var(--bg);border:1px solid var(--line-amber);border-radius:var(--r-lg);padding:36px 34px 38px;display:grid;gap:18px;justify-items:center;text-align:center}
.qr-card img{width:280px;height:280px;border-radius:16px;border:1px solid #E8D9C4;background:#fff;padding:8px}
.qr-card p{font-size:15px;line-height:1.75;font-weight:500}
.tut-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:24px}
.tut{background:#fff;border-radius:var(--r-md);padding:26px 24px 30px}
.tut .no{font-size:32px;font-weight:900;color:var(--cyan)}
.tut h3{font-size:17px;font-weight:700;margin-top:11px}
.tut p{font-size:13px;line-height:1.75;margin-top:8px;color:var(--body)}

/* ---------- 安装包档案 ---------- */
.apk-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.apk-card{border-radius:22px;padding:32px 34px;display:grid;gap:12px}
.apk-card h2{font-size:24px;font-weight:900}
.apk-card--ice{background:var(--card-ice)}
.apk-card--pink{background:var(--pink-bg);border:1px solid #FFB9CB}
.apk-card--pink h2,.apk-card--pink .plain{color:var(--pink-deep)}
.data-row{display:flex;gap:16px;background:#fff;border-radius:12px;padding:13px 18px;font-size:13px}
.data-row small{flex:none;width:110px;color:var(--muted)}
.data-row b{color:var(--ink);word-break:break-all}
.data-row--hl{background:var(--bg)} .data-row--hl small{color:#8A6A3B} .data-row--hl b{color:var(--amber-deep)}
.data-row--ok b{color:#1E9E62}
.apk-card .plain{font-size:14px;line-height:1.9;background:#fff;border-radius:12px;padding:14px 18px}
.note-card{background:var(--card-row);border-radius:18px;padding:24px 30px;margin-top:24px}
.note-card h3{font-size:18px;font-weight:700;color:var(--cyan-deep)}
.note-card p{font-size:14px;line-height:1.85;margin-top:8px}

/* ---------- 权限与协议 ---------- */
.perm-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.perm{background:#fff;border-radius:18px;padding:24px 28px}
.perm h3{font-size:19px;font-weight:700;margin-bottom:12px}
.perm p{font-size:13px;line-height:1.9}
.agree-card{background:#fff;border-radius:18px;padding:28px 32px;margin-top:24px}
.agree-card h2{font-size:22px;font-weight:900}
.agree-card p{font-size:14px;line-height:1.95;margin-top:12px}
.contact-card{background:var(--cyan);border-radius:var(--r-md);padding:32px 38px;margin-top:24px;color:#fff}
.contact-card h2{font-size:24px;font-weight:900;color:#fff}
.contact-card p{font-size:14px;line-height:1.85;margin-top:10px;color:#D9F4FB}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border-radius:var(--r-md);margin-bottom:20px;overflow:hidden}
.faq-q{width:100%;background:none;border:0;cursor:pointer;font-family:var(--font);text-align:left;font-size:21px;font-weight:700;color:var(--ink);padding:28px 34px;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq-q::after{content:"+";font-size:26px;color:var(--cyan);flex:none;transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{display:none;padding:0 34px 28px;font-size:14px;line-height:1.85}
.faq-item.open .faq-a{display:block}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;background:rgba(5,23,46,.86);display:none;align-items:center;justify-content:center;z-index:100;padding:32px;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:min(92vw,720px);max-height:88vh;border-radius:16px;box-shadow:0 24px 80px rgba(0,0,0,.5)}
.lightbox .cap{position:fixed;bottom:22px;left:0;right:0;text-align:center;color:#D9F4FB;font-size:14px}

/* ---------- 官方宣传视频 ---------- */
.video-shell{max-width:960px;margin:0 auto}
.video-player{display:block;width:100%;aspect-ratio:16/9;background:#000c;border-radius:var(--r-lg);box-shadow:0 18px 44px rgba(18,48,76,.16)}
.video-note{margin-top:14px;text-align:center;font-size:13px;font-weight:500;color:var(--muted)}
@media (max-width:760px){
  .video-player{border-radius:var(--r-md)}
}

/* ---------- 官方活动一览（同步区块） ---------- */
.act-head{margin-bottom:18px}
.act-head h3{font-size:26px;font-weight:900}
.act-head p{font-size:14px;color:var(--muted);margin-top:6px}
.act-list{display:grid;gap:12px}
.act{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line-cyan);border-radius:var(--r-md);padding:18px 24px;transition:transform .15s,box-shadow .15s}
.act:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(18,48,76,.10)}
.act-title{font-size:17px;font-weight:700;color:var(--ink)}
.act-date{font-size:13px;color:var(--muted);margin-left:auto}
.act-more{font-size:14px;font-weight:700;color:var(--cyan-deep);flex:none}
@media (max-width:760px){
  .act{flex-wrap:wrap;gap:6px 12px;padding:16px 20px}
  .act-date{margin-left:0;order:3}
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero h1{font-size:48px;line-height:62px}
  .gift-grid,.event-grid,.feat-row,.apk-cols,.perm-grid{grid-template-columns:1fr}
  .mini-feats{grid-template-columns:1fr 1fr}
  .calc-bar{grid-template-columns:1fr}
  .dl-cols{grid-template-columns:1fr}
  .entry-grid,.tut-row{grid-template-columns:1fr 1fr}
  .poster-grid{grid-template-columns:repeat(3,1fr)}
  .shot-row{grid-template-columns:1fr 1fr}
  .page-head h1{font-size:42px}
  .sec-head h2{font-size:34px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  /* --- 导航：汉堡折叠 --- */
  .nav .shell{gap:12px;padding-top:10px;padding-bottom:10px}
  .brand img{width:38px;height:38px;border-radius:10px}
  .brand b{font-size:17px}
  .btn-nav{padding:9px 18px;font-size:14px}
  .nav-burger{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;background:none;border:0;cursor:pointer;flex:none;padding:0}
  .nav-burger span{width:22px;height:2.5px;border-radius:2px;background:var(--ink);transition:transform .2s,opacity .2s}
  .nav.open .nav-burger span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
  .nav.open .nav-burger span:nth-child(2){opacity:0}
  .nav.open .nav-burger span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;padding:6px 24px 14px;box-shadow:0 18px 32px rgba(18,48,76,.14)}
  .nav.open .nav-links{display:grid}
  .nav-links a{padding:13px 2px;font-size:16px;border-bottom:1px solid #EDF4F8}
  .nav-links a:last-child{border-bottom:0}

  /* --- 顶部公告 --- */
  .topline .tel{display:none}
  .topline p{font-size:12px}

  /* --- Hero：自适应高度，防底部渐变压内容 --- */
  .hero{height:auto;min-height:560px}
  .hero-inner{padding-top:130px;padding-bottom:150px}
  .hero h1{font-size:34px;line-height:46px}
  .hero .sub{font-size:15px;line-height:25px}
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;margin-top:34px}
  .hero-stats b{font-size:19px}
  .hero-cta .btn,.cta-band .btn{width:100%}

  /* --- 区块节奏 --- */
  .section{padding:44px 0}
  .page-head{padding:44px 0 52px}
  .page-head h1{font-size:32px}
  .sec-head h2,.cta-band h2{font-size:26px}
  .cta-band{padding:48px 0}

  /* --- 卡片内边距收紧 --- */
  .gift{flex-direction:column;align-items:flex-start;padding:20px 20px 22px}
  .step{flex-direction:column;gap:12px}
  .step{padding:24px 22px 28px}
  .step .no{font-size:40px;width:64px}
  .event{padding:22px 22px 26px}
  .mfeat{padding:22px 22px 24px}
  .feat{padding:24px 22px 28px}
  .tut{padding:22px 20px 26px}
  .entry{padding:22px 20px}
  .dl-card{padding:28px 24px 30px}
  .qr-card{padding:28px 24px 32px}
  .qr-card img{width:220px;height:220px}
  .apk-card{padding:24px 20px 26px}
  .perm{padding:20px 20px 24px}
  .agree-card{padding:24px 22px}
  .contact-card{padding:26px 22px}
  .warn-card{padding:22px 22px}
  .cb-in{padding:22px 22px 24px}
  .cb-out{padding:20px 22px 24px}
  .cb-field{height:50px}
  .cb-field input{font-size:20px}
  .lightbox{padding:16px}

  /* --- 下载按钮整行化，拇指好点 --- */
  .dl-btns .btn{flex:1 1 100%}

  /* --- FAQ --- */
  .faq-q{padding:20px 22px;font-size:17px}
  .faq-a{padding:0 22px 22px}

  /* --- VIP 表：横向滚动 --- */
  .vip-table{padding:22px 16px 26px;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .vip-table table{min-width:640px}
  .vip-table thead th{padding:12px 14px;font-size:13px}
  .vip-table tbody td{padding:11px 14px;font-size:13px}

  /* --- 网格单列 --- */
  .entry-grid,.tut-row,.shot-row,.mini-feats{grid-template-columns:1fr}
  .poster-grid{grid-template-columns:1fr 1fr;gap:14px}

  /* --- 页脚 --- */
  footer{padding:48px 0 28px}
  .foot-grid{grid-template-columns:1fr}
  .health{font-size:12px;padding:16px 18px}
}