/* =========================================================
   拷贝漫画 · COPY COMIC
   Deep-blue library landing page · mobile first
   ========================================================= */

:root{
  --navy:#0b2b60;
  --navy-2:#0d3b8f;
  --blue:#1e63c9;
  --blue-2:#174ea6;
  --blue-soft:#eaf3ff;
  --sky:#f2f8ff;
  --paper:#ffffff;
  --cream:#fff8ef;
  --coral:#ff6b4a;
  --coral-deep:#e55032;
  --gold:#ffc857;
  --green:#18a06a;
  --ink:#17243b;
  --ink-2:#243552;
  --muted:#60708a;
  --muted-2:#8b9ab0;
  --line:#d7e3f2;
  --shadow:0 18px 40px -26px rgba(13,59,143,.4);
  --shadow-sm:0 10px 24px -18px rgba(13,59,143,.34);
  --r:20px;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --serif:"Songti SC","STSong","Noto Serif CJK SC","宋体",serif;
}

*,*::before,*::after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;min-width:320px;color:var(--ink);
  background:
    radial-gradient(780px 620px at 96% 4%,rgba(30,99,201,.10),transparent 64%),
    radial-gradient(680px 540px at 2% 12%,rgba(255,107,74,.08),transparent 66%),
    linear-gradient(180deg,#ffffff 0%,#f7fbff 42%,#eef6ff 100%);
  font-family:var(--sans);font-size:16px;line-height:1.72;
  overflow-x:hidden;isolation:isolate;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
body.nav-open{overflow:hidden}
::selection{background:var(--coral);color:#fff}
img,svg{display:block}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit}
.inline-link{color:var(--blue);font-weight:800;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.inline-link:hover{color:var(--blue-2)}
h1,h2,h3,p,dl,dd,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden;pointer-events:none}
.icon{width:20px;height:20px;flex:none}

/* ---------- Ambient background ---------- */
.bg-wash{position:fixed;inset:0;z-index:-4;pointer-events:none;background:
  radial-gradient(620px 620px at 82% 16%,rgba(30,99,201,.09),transparent 70%),
  radial-gradient(520px 520px at 8% 42%,rgba(255,107,74,.06),transparent 70%);
  animation:washDrift 26s ease-in-out infinite alternate;
}
@keyframes washDrift{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(-2%,1.4%,0) scale(1.05)}}
.bg-dots{position:fixed;inset:0;z-index:-3;pointer-events:none;opacity:.4;background-image:radial-gradient(rgba(13,59,143,.18) 1px,transparent 1px);background-size:26px 26px;-webkit-mask-image:radial-gradient(ellipse 92% 80% at 50% 36%,#000 8%,rgba(0,0,0,.6) 60%,transparent 88%);mask-image:radial-gradient(ellipse 92% 80% at 50% 36%,#000 8%,rgba(0,0,0,.6) 60%,transparent 88%)}
.bg-pages{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden}
.page{position:absolute;display:block;border:1px solid rgba(30,99,201,.14);background:linear-gradient(145deg,rgba(255,255,255,.7),rgba(234,243,255,.35));border-radius:6px;box-shadow:0 10px 24px -20px rgba(13,59,143,.35);animation:pageFloat 24s ease-in-out infinite}
.page-a{width:98px;height:132px;left:4%;top:23%;transform:rotate(-14deg)}
.page-b{width:74px;height:104px;right:6%;top:30%;transform:rotate(11deg);animation-delay:-8s}
.page-c{width:120px;height:156px;left:9%;bottom:8%;transform:rotate(8deg);animation-delay:-15s}
@keyframes pageFloat{0%,100%{translate:0 0;rotate:0deg}50%{translate:10px -18px;rotate:4deg}}
@media (max-width:720px){.page{animation:none}.page-c{display:none}.bg-dots{opacity:.28}}

.site-header,.site-footer,main,.mobile-dock,.skip-link{position:relative;z-index:2}
.scroll-progress{position:fixed;top:0;left:0;right:0;z-index:130;height:3px;background:transparent;pointer-events:none}
.scroll-progress span{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--coral),var(--gold),var(--blue));will-change:transform}

/* ---------- Layout / type ---------- */
.container{width:min(1160px,calc(100% - 44px));margin-inline:auto}
.skip-link{position:fixed;left:16px;top:12px;z-index:200;padding:10px 16px;border-radius:999px;background:var(--navy);color:#fff;font-size:12px;font-weight:800;transform:translateY(-160%);transition:transform .2s ease}
.skip-link:focus{transform:translateY(0)}
.section{position:relative;padding:86px 0}
.section-head{max-width:720px;margin-bottom:34px}
.section-head-center{margin-inline:auto;text-align:center}
.section-head-center .kicker{justify-content:center}
.section-head-split{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(275px,.78fr);gap:44px;align-items:end;max-width:none}
.section-head-split .section-desc{margin-bottom:4px}
.kicker{display:inline-flex;align-items:center;gap:9px;color:var(--blue);font-size:10px;font-weight:900;line-height:1.2;letter-spacing:.18em;text-transform:uppercase}
.kicker::before{content:"";width:25px;height:2px;background:var(--coral)}
h2{margin:12px 0 10px;font-size:clamp(29px,3.6vw,42px);font-weight:900;line-height:1.23;letter-spacing:-.04em;text-wrap:balance}
.section-desc{max-width:650px;color:var(--muted);font-size:14px;line-height:1.9}
#downloads,#preview,#features,#install,#faq,#about,#download{scroll-margin-top:92px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 21px;border:1.5px solid transparent;border-radius:999px;font-family:var(--sans);font-size:13.5px;font-weight:900;line-height:1.2;white-space:nowrap;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}
.btn .icon{width:18px;height:18px}
.btn-primary,.btn-coral{color:#fff;background:var(--coral);box-shadow:0 12px 24px -14px rgba(229,80,50,.85)}
.btn-primary:hover,.btn-coral:hover{transform:translateY(-2px);background:var(--coral-deep);box-shadow:0 16px 28px -14px rgba(229,80,50,.9)}
.btn-ghost{color:#fff;background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.46)}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.13);border-color:#fff}
.btn-light{color:var(--navy);background:#fff;border-color:#fff;box-shadow:0 12px 24px -18px rgba(13,43,96,.4)}
.btn-light:hover{transform:translateY(-2px);background:var(--cream)}
.btn-outline{color:var(--blue);background:#fff;border-color:rgba(30,99,201,.35)}
.btn-outline:hover{transform:translateY(-2px);border-color:var(--blue);background:var(--blue-soft)}
.btn-navy{color:#fff;background:var(--navy);border-color:var(--navy)}
.btn-navy:hover{transform:translateY(-2px);background:var(--navy-2)}
.btn-sm{min-height:40px;padding:0 16px;font-size:12px}
.btn-lg{min-height:53px;padding:0 25px;font-size:14.5px}
.btn-block{width:100%}
.btn-arrow{width:16px!important;height:16px!important;transition:transform .18s ease}
.btn:hover .btn-arrow{transform:translateX(3px)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.97);border-bottom:3px solid var(--blue);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(13,43,96,.32)}
.nav-shell{display:flex;align-items:center;gap:22px;min-height:72px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;min-width:0}
.brand img{width:44px;height:44px;border-radius:11px;object-fit:contain;background:var(--blue);box-shadow:0 7px 18px -10px rgba(13,43,96,.5)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-size:21px;font-weight:900;letter-spacing:-.04em}
.brand-sub{margin-top:4px;color:var(--muted-2);font-size:7.5px;font-weight:800;letter-spacing:.1em}
.primary-nav{display:flex;align-items:center;gap:1px;margin-left:auto}
.primary-nav a{padding:8px 10px;color:#53637b;font-size:12.5px;font-weight:700;transition:color .16s ease,background .16s ease}
.primary-nav a:hover,.primary-nav a.is-active{color:var(--blue);background:var(--blue-soft)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}
.menu-toggle{display:none;width:42px;height:42px;padding:0;border:1.5px solid var(--line);border-radius:50%;background:var(--paper);color:var(--ink);cursor:pointer;place-items:center}
.menu-toggle .icon{width:18px;height:18px}
.menu-toggle .close-icon{display:none}
.menu-toggle[aria-expanded="true"] .menu-icon{display:none}
.menu-toggle[aria-expanded="true"] .close-icon{display:block}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:58px 0 58px;background:linear-gradient(112deg,#08214c 0%,#0b2b60 42%,#0d3b8f 68%,#1e63c9 100%);color:#fff;isolation:isolate}
.hero::before{content:"";position:absolute;z-index:0;right:-12%;bottom:-48%;width:56%;height:104%;background:var(--coral);transform:rotate(-11deg);opacity:.94}
.hero::after{content:"";position:absolute;z-index:0;right:-10%;top:-30%;width:54%;height:120%;background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,0));pointer-events:none}
.hero-glow{position:absolute;z-index:0;right:6%;top:8%;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(255,200,87,.22),rgba(255,200,87,0) 68%);pointer-events:none;animation:glowPulse 9s ease-in-out infinite}
@keyframes glowPulse{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.04fr) minmax(410px,.96fr);gap:44px;align-items:center}
.hero-copy{position:relative;z-index:2}
.hero-badges{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:14px}
.hero-badges span{display:inline-flex;align-items:center;min-height:27px;padding:0 10px;border:1px solid rgba(255,255,255,.3);border-radius:999px;background:rgba(255,255,255,.08);color:#e8f1ff;font-size:9.5px;font-weight:800;letter-spacing:.03em}
.hero-badges span:first-child{background:var(--gold);border-color:var(--gold);color:var(--navy)}
h1{margin:0;font-weight:900;line-height:1.13;letter-spacing:-.05em}
.h1-main{display:block;font-size:clamp(40px,4.9vw,64px);white-space:nowrap}
.h1-sub{display:block;margin-top:8px;font-size:clamp(28px,3.4vw,41px);line-height:1.35;letter-spacing:-.04em;color:#eaf2ff}
.h1-sub em{font-style:normal;position:relative;z-index:0;white-space:nowrap;color:var(--gold)}
.h1-sub em::after{content:"";position:absolute;left:-2px;right:-2px;bottom:2px;z-index:-1;height:.34em;background:rgba(255,107,74,.55);transform:rotate(-1.4deg)}
.hero-lead{max-width:540px;margin-top:17px;color:#cadcf5;font-size:14.5px;line-height:1.9}
.hero-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:23px}
.hero-note{display:flex;align-items:center;gap:6px;margin-top:13px;color:#a9c1e3;font-size:10px;line-height:1.6}
.hero-note .icon{width:13px;height:13px;color:var(--gold)}
.hero-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.hero-meta span{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:#dce9fa;font-size:8.5px;font-weight:700}
.hero-meta span:last-child{background:rgba(255,200,87,.15);border-color:rgba(255,200,87,.45);color:var(--gold)}

/* phone mockups */
.hero-media{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;min-height:500px}
.hero-media::before{content:"";position:absolute;z-index:0;left:50%;top:50%;transform:translate(-50%,-50%);width:360px;height:420px;border-radius:50%;border:1px solid rgba(255,255,255,.2);box-shadow:0 0 0 28px rgba(255,255,255,.04),0 0 0 56px rgba(255,255,255,.025)}
.phone-front,.phone-back{position:relative;border:4px solid #fff;background:#fff;box-shadow:0 26px 48px -20px rgba(0,0,0,.55);overflow:hidden}
.phone-front{z-index:3;width:238px;border-radius:28px;padding:7px;transform:rotate(1.5deg)}
.phone-back{z-index:1;position:absolute;width:214px;left:11%;top:46px;border-radius:26px;padding:6px;transform:rotate(-8deg);opacity:.92}
.phone-screen{overflow:hidden;border-radius:21px;aspect-ratio:360/640;background:#cfe0f5}
.phone-screen img{width:100%;height:100%;object-fit:cover}
.hero-logo{position:absolute;z-index:6;left:9%;bottom:24px;display:grid;place-items:center;width:72px;height:72px;border:4px solid #fff;border-radius:20px;background:#fff;box-shadow:0 12px 24px -10px rgba(0,0,0,.5);transform:rotate(-7deg)}
.hero-logo img{width:62px;height:62px;object-fit:contain;border-radius:12px}
.float-badge{position:absolute;z-index:6;display:flex;flex-direction:column;padding:8px 11px;border:1px solid rgba(255,255,255,.5);border-radius:12px;background:rgba(255,255,255,.96);box-shadow:0 12px 24px -14px rgba(0,0,0,.4);line-height:1.35}
.float-badge b{color:var(--navy);font-size:9.5px;font-weight:900;white-space:nowrap}
.float-badge span{margin-top:1px;color:var(--muted);font-size:7.5px;white-space:nowrap}
.badge-a{left:0;top:104px;animation:bob 6.5s ease-in-out infinite}
.badge-b{right:-2px;bottom:88px;background:var(--cream);animation:bob 7.5s ease-in-out .7s infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero-sticker{position:absolute;z-index:6;right:2%;top:20px;display:grid;place-items:center;width:62px;height:62px;border-radius:50%;background:var(--gold);color:var(--navy);font-size:9px;font-weight:900;line-height:1.15;text-align:center;transform:rotate(9deg);box-shadow:0 10px 20px -10px rgba(0,0,0,.45)}

/* ---------- Stats ---------- */
.stats-wrap{position:relative;z-index:4;margin-top:-30px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 18px 38px -26px rgba(13,43,96,.4)}
.stats > div{position:relative;display:flex;flex-direction:column;gap:2px;padding:19px 22px}
.stats > div + div::before{content:"";position:absolute;left:0;top:22%;height:56%;width:1px;background:var(--line)}
.stats b{color:var(--blue);font-size:27px;font-weight:900;line-height:1.05;letter-spacing:-.04em}
.stats span:not(b span){color:var(--muted);font-size:9.5px;font-weight:700}

/* ---------- Download center ---------- */
.downloads{padding-top:84px}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.download-card{position:relative;display:flex;flex-direction:column;min-height:196px;padding:21px 19px 18px;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:var(--r);background:#fff;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.download-card:nth-child(3n+2){border-top-color:var(--coral)}
.download-card:nth-child(3n+3){border-top-color:var(--gold)}
.download-card:hover{transform:translateY(-4px);border-color:rgba(30,99,201,.35);box-shadow:var(--shadow)}
.dl-tag{display:inline-flex;align-items:center;align-self:flex-start;min-height:21px;padding:0 7px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-size:7.5px;font-weight:900}
.download-card:nth-child(3n+2) .dl-tag{background:#ffede8;color:var(--coral-deep)}
.download-card:nth-child(3n+3) .dl-tag{background:#fff5da;color:#8a6200}
.download-card h3{margin-top:12px;font-size:17px;font-weight:900;line-height:1.45;letter-spacing:-.02em}
.download-card p{margin-top:5px;color:var(--muted);font-size:11.5px;line-height:1.8}
.dl-link{display:inline-flex;align-items:center;gap:5px;align-self:flex-start;margin-top:auto;padding-top:14px;color:var(--blue);font-size:10.5px;font-weight:900}
.dl-link .icon{width:12px;height:12px;transition:transform .16s ease}
.dl-link:hover .icon{transform:translateX(3px)}
.download-note{margin-top:15px;padding-left:10px;border-left:3px solid var(--gold);color:var(--muted);font-size:10px;line-height:1.7}

/* ---------- Preview ---------- */
.preview{background:linear-gradient(180deg,#fff 0%,#f3f9ff 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.preview-card{padding:14px 14px 19px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.preview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.device{width:214px;max-width:100%;margin:0 auto;padding:7px;border:4px solid var(--navy);border-radius:28px;background:#fff;box-shadow:0 16px 28px -20px rgba(13,43,96,.45)}
.device > img,.shelf-device > .shelf-ui{width:100%;aspect-ratio:360/640;object-fit:cover;border-radius:19px;overflow:hidden}
.preview-meta{display:flex;justify-content:space-between;align-items:center;margin-top:13px;color:var(--muted);font-size:7.5px;font-weight:800;letter-spacing:.02em}
.preview-meta b{color:var(--coral);font-size:9px}
.preview-card h3{margin-top:5px;font-size:15px;font-weight:900;line-height:1.45}
.preview-card > p{margin-top:4px;color:var(--muted);font-size:11px;line-height:1.75}
.swipe-hint{display:none;align-items:center;justify-content:center;gap:7px;margin-top:14px;color:var(--muted);font-size:9px}

/* CSS shelf mockup */
.shelf-ui{display:flex;flex-direction:column;background:#f8fbff;color:var(--ink);font-family:var(--sans)}
.ui-head{display:flex;justify-content:space-between;align-items:center;padding:13px 12px 9px;background:linear-gradient(135deg,#0b2b60,#1e63c9);color:#fff}
.ui-head b{font-size:14px;font-weight:900}
.ui-head span{font-size:7px;opacity:.8}
.ui-tabs{display:flex;gap:12px;padding:7px 12px;border-bottom:1px solid var(--line);font-size:7px;font-weight:800;color:var(--muted);background:#fff}
.ui-tabs .on{color:var(--blue);position:relative}
.ui-tabs .on::after{content:"";position:absolute;left:0;right:0;bottom:-7px;height:2px;background:var(--blue)}
.ui-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:10px 12px}
.book small{display:block;margin-top:3px;color:var(--muted);font-size:6px}
.cover{position:relative;height:86px;padding:7px;border-radius:7px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;font-size:8px;font-weight:900;line-height:1.3;overflow:hidden}
.cover::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,.45));z-index:0}
.cover span{position:absolute;right:5px;top:5px;z-index:1;padding:1px 3px;border:1px solid rgba(255,255,255,.7);border-radius:3px;font-size:5px}
.cover b{position:relative;z-index:1}
.cover-a{background:linear-gradient(135deg,#2563eb,#0b2b60)}
.cover-b{background:linear-gradient(135deg,#18a06a,#0b4d3a)}
.cover-c{background:linear-gradient(135deg,#f59e0b,#7c3a10)}
.cover-d{background:linear-gradient(135deg,#7c3aed,#3b0764)}
.ui-progress{display:flex;align-items:center;gap:7px;margin:0 12px 8px;padding:7px 8px;border-radius:8px;background:#fff;border:1px solid var(--line)}
.ui-progress span{flex:1;height:5px;border-radius:99px;background:var(--blue-soft);overflow:hidden}
.ui-progress span::after{content:"";display:block;width:65%;height:100%;background:var(--coral);border-radius:99px}
.ui-progress b{font-size:6px;color:var(--muted);font-weight:700;white-space:nowrap}
.ui-nav{margin-top:auto;display:flex;justify-content:space-around;padding:10px 0;border-top:1px solid var(--line);background:#fff;font-size:6.5px;font-weight:800;color:var(--muted)}
.ui-nav .on{color:var(--blue)}

/* ---------- Features ---------- */
.features{background:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.feature-card{min-height:196px;padding:22px 20px;border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg,#fff,#fbfdff);box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:13px;background:var(--blue-soft);color:var(--blue)}
.feature-icon .icon{width:20px;height:20px}
.feature-icon.icon-coral{background:#ffede8;color:var(--coral-deep)}
.feature-icon.icon-gold{background:#fff5da;color:#8a6200}
.feature-card h3{margin-top:15px;font-size:16px;font-weight:900;line-height:1.45}
.feature-card p{margin-top:5px;color:var(--muted);font-size:11.5px;line-height:1.82}

/* ---------- Install ---------- */
.install{background:var(--sky);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.install-grid{display:grid;grid-template-columns:minmax(0,.76fr) minmax(0,1.24fr);gap:48px;align-items:start}
.install-intro{position:sticky;top:96px}
.install-intro h2{font-size:clamp(28px,3.1vw,39px)}
.install-intro > p{color:var(--muted);font-size:12.5px;line-height:1.9}
.install-check{display:grid;gap:8px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.install-check li{display:flex;align-items:flex-start;gap:7px;color:#4b5c73;font-size:10.5px;line-height:1.7}
.install-check .icon{width:13px;height:13px;margin-top:3px;color:var(--green)}
.text-link{display:inline-flex;align-items:center;gap:5px;margin-top:18px;color:var(--blue);font-size:10.5px;font-weight:900}
.text-link .icon{width:12px;height:12px}
.steps{display:grid;gap:9px}
.step{display:grid;grid-template-columns:43px minmax(0,1fr);gap:13px;align-items:start;padding:15px 17px;border:1px solid var(--line);border-radius:15px;background:#fff;box-shadow:0 8px 20px -18px rgba(13,43,96,.35)}
.step-num{display:grid;place-items:center;width:43px;height:43px;border-radius:50%;background:var(--blue);color:#fff;font-size:14px;font-weight:900}
.step h3{font-size:14px;font-weight:900;line-height:1.5}
.step p{margin-top:3px;color:var(--muted);font-size:11px;line-height:1.8}
.platform-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.platform-card{padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 8px 20px -18px rgba(13,43,96,.3)}
.platform-head{display:flex;align-items:center;gap:8px}
.platform-icon{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;background:var(--blue-soft);color:var(--blue)}
.platform-icon .icon{width:18px;height:18px}
.platform-icon-coral{background:#ffede8;color:var(--coral-deep)}
.platform-head b{display:block;font-size:12px;line-height:1.3}
.platform-head span:not(.platform-icon){display:block;margin-top:1px;color:var(--muted-2);font-size:7px;font-weight:700}
.platform-card ol{display:grid;gap:5px;margin-top:12px;counter-reset:step}
.platform-card li{position:relative;padding-left:17px;color:#4b5c73;font-size:10px;line-height:1.7}
.platform-card li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:2px;display:grid;place-items:center;width:11px;height:11px;border-radius:50%;background:var(--blue);color:#fff;font-size:6px;font-weight:900}
.warning-box{display:flex;gap:9px;margin-top:10px;padding:13px 14px;border:1px solid #ffe0a8;border-radius:14px;background:#fffaf0}
.warning-icon{display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:9px;background:var(--gold);color:var(--navy)}
.warning-icon .icon{width:16px;height:16px}
.warning-box b{display:block;font-size:11px}
.warning-box p{margin-top:3px;color:#6f5a2c;font-size:10px;line-height:1.75}
.install-footnote{margin-top:9px;color:var(--muted);font-size:9px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq{padding-bottom:82px}
.faq-grid{display:grid;grid-template-columns:minmax(0,.74fr) minmax(0,1.26fr);gap:44px;align-items:start}
.faq-aside{position:sticky;top:96px;padding:24px 22px;border-radius:22px;background:linear-gradient(145deg,var(--navy),var(--blue));color:#fff;box-shadow:0 20px 40px -26px rgba(13,43,96,.6)}
.faq-aside .kicker{color:var(--gold)}
.faq-aside .kicker::before{background:var(--gold)}
.faq-aside h2{color:#fff;font-size:clamp(26px,2.8vw,34px)}
.faq-aside > p{color:#c7d9f3;font-size:11.5px;line-height:1.9}
.faq-aside .btn{margin-top:17px}
.faq-note{display:flex;align-items:flex-start;gap:7px;margin-top:19px;padding-top:15px;border-top:1px solid rgba(255,255,255,.18)}
.faq-note span{display:grid;place-items:center;flex:none;width:29px;height:23px;border:1px solid rgba(255,200,87,.55);border-radius:5px;color:var(--gold);font-size:7px;font-weight:900}
.faq-note p{color:#b9cfee;font-size:9px;line-height:1.7}
.faq-list{display:grid;gap:7px}
.faq-list details{overflow:hidden;border:1px solid var(--line);border-radius:13px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.faq-list details[open]{border-color:rgba(30,99,201,.35);box-shadow:var(--shadow-sm)}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:54px;padding:11px 14px;color:var(--ink);font-size:12px;font-weight:800;line-height:1.55;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary i{position:relative;display:block;flex:none;width:21px;height:21px;border-radius:50%;background:var(--blue-soft);transition:transform .18s ease}
.faq-list summary i::before,.faq-list summary i::after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--blue)}
.faq-list summary i::before{width:8px;height:1.5px}
.faq-list summary i::after{width:1.5px;height:8px}
.faq-list details[open] summary i{transform:rotate(45deg);background:var(--blue)}
.faq-list details[open] summary i::before,.faq-list details[open] summary i::after{background:#fff}
.faq-a{padding:0 14px 13px;border-top:1px solid var(--line)}
.faq-a p{padding-top:10px;color:var(--muted);font-size:11px;line-height:1.82}

/* ---------- Scenarios ---------- */
.scenarios{background:linear-gradient(180deg,var(--cream),#fff 82%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scenario-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}
.scenario-card{padding:18px 17px 16px;border:1px solid #f0e2d2;border-radius:17px;background:#fff;box-shadow:var(--shadow-sm)}
.quote-icon{width:18px;height:18px;color:var(--coral);margin-bottom:9px}
.scenario-card > p{color:#4b5c73;font-size:11.5px;line-height:1.82}
.scenario-by{display:flex;align-items:center;gap:7px;margin-top:14px;padding-top:11px;border-top:1px dashed #eddfcf}
.avatar{display:grid;place-items:center;flex:none;width:26px;height:26px;border-radius:50%;color:#fff;font-size:8px;font-weight:900}
.avatar-a{background:linear-gradient(135deg,#3b82f6,#1e3a8a)}
.avatar-b{background:linear-gradient(135deg,#18a06a,#0b5d3e)}
.avatar-c{background:linear-gradient(135deg,#f59e0b,#b45309)}
.avatar-d{background:linear-gradient(135deg,#8b5cf6,#4c1d95)}
.scenario-by b{display:block;font-size:9.5px;line-height:1.3}
.scenario-by span:not(.avatar){display:block;margin-top:1px;color:var(--muted-2);font-size:7.5px}

/* ---------- Hot searches ---------- */
.hot-searches{padding:0 0 72px}
.hot-head{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;margin-bottom:15px}
.hot-head h2{margin:7px 0 0;font-size:21px;letter-spacing:-.02em}
.hot-head p{max-width:410px;color:var(--muted);font-size:10px;line-height:1.7;text-align:right}
.tag-cloud{display:flex;flex-wrap:wrap;gap:7px}
.tag-cloud a{display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#53637b;font-size:10px;font-weight:700;transition:transform .16s ease,border-color .16s ease,background .16s ease,color .16s ease}
.tag-cloud a:hover{transform:translateY(-1px);border-color:rgba(30,99,201,.4);background:var(--blue-soft);color:var(--blue)}

/* ---------- About ---------- */
.about{padding:0 0 80px}
.about-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:44px;align-items:start}
.about-copy h2{font-size:clamp(27px,3.1vw,39px)}
.about-copy p{max-width:560px;margin-top:10px;color:var(--muted);font-size:12px;line-height:1.9}
.about-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.about-meta span{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:8.5px;font-weight:700}
.about-card{padding:19px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-sm)}
.about-card h3{font-size:12.5px;font-weight:900}
.about-card h3 + .about-list{margin-top:7px}
.about-list{display:grid;gap:5px;margin-bottom:15px}
.about-list li{position:relative;padding-left:12px;color:var(--muted);font-size:10px;line-height:1.75}
.about-list li::before{content:"";position:absolute;left:0;top:.62em;width:4px;height:4px;border-radius:50%;background:var(--coral)}
.update-list{border-top:1px solid var(--line);margin-top:8px}
.update-list li{display:flex;gap:8px;align-items:baseline;padding:6px 0;border-bottom:1px dashed var(--line)}
.update-list time{flex:none;color:var(--coral-deep);font-size:8px;font-weight:900}
.update-list span{color:var(--muted);font-size:9px;line-height:1.6}

/* ---------- Final CTA ---------- */
.final-cta{padding:0 0 80px}
.cta-panel{position:relative;overflow:hidden;padding:54px 26px 49px;border-radius:26px;background:linear-gradient(135deg,#ff6b4a,#e55032 62%,#c43c22);color:#fff;box-shadow:0 26px 54px -30px rgba(196,60,34,.62);text-align:center}
.cta-panel::before{content:"";position:absolute;left:-60px;top:-90px;width:260px;height:260px;border-radius:50%;background:rgba(255,200,87,.26)}
.cta-panel::after{content:"";position:absolute;right:-70px;bottom:-100px;width:280px;height:280px;border-radius:50%;background:rgba(11,43,96,.28)}
.cta-eyebrow{position:relative;z-index:1;color:#ffe0b3;font-size:9px;font-weight:900;letter-spacing:.18em}
.cta-panel h2{position:relative;z-index:1;margin:12px 0 9px;color:#fff;font-size:clamp(38px,5vw,62px);line-height:1.16}
.cta-panel > p{position:relative;z-index:1;color:#ffe8df;font-size:12px}
.cta-actions{position:relative;z-index:1;display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:22px}
.btn-on-coral{color:var(--navy);background:#fff;border-color:#fff;box-shadow:0 12px 24px -16px rgba(0,0,0,.4)}
.btn-on-coral:hover{transform:translateY(-2px);background:var(--cream)}
.cta-fine{position:relative;z-index:1;margin-top:11px!important;color:#ffd2c6!important;font-size:9px!important}

/* ---------- Footer ---------- */
.site-footer{padding:0 0 28px;background:#fff;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:38px;padding:38px 0 26px}
.footer-brand .brand-name{font-size:20px}
.footer-brand .brand-sub{font-size:7px}
.footer-brand > p{max-width:370px;margin-top:11px;color:var(--muted);font-size:10px;line-height:1.85}
.footer-age{display:flex;align-items:center;gap:7px;margin-top:12px;color:var(--muted);font-size:8.5px}
.footer-age span{display:grid;place-items:center;width:27px;height:21px;border:1px solid rgba(229,80,50,.4);border-radius:5px;color:var(--coral-deep);font-size:7px;font-weight:900}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.footer-nav > div{display:grid;align-content:start;gap:4px}
.footer-nav b{margin-bottom:3px;font-size:9.5px;font-weight:900}
.footer-nav a{color:var(--muted);font-size:9px;transition:color .16s ease}
.footer-nav a:hover{color:var(--blue)}
.footer-disclaimer{padding-top:14px;border-top:1px solid var(--line)}
.footer-disclaimer p{color:var(--muted-2);font-size:8.5px;line-height:1.75}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--muted-2);font-size:8.5px}
.footer-bottom a{display:inline-flex;align-items:center;gap:4px;color:#42536b;font-weight:800}
.footer-bottom a .icon{width:10px;height:10px}

/* ---------- Mobile dock / toast / reveal ---------- */
.mobile-dock{display:none}
.toast{position:fixed;z-index:120;left:50%;bottom:86px;transform:translate(-50%,12px);max-width:calc(100% - 36px);padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;box-shadow:0 12px 28px -18px rgba(13,43,96,.4);color:var(--ink);font-size:10px;font-weight:700;line-height:1.4;text-align:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
.toast.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0)}
.js .reveal{transform:translateY(12px);transition:transform .5s cubic-bezier(.2,.65,.3,1)}
.js .reveal.is-visible{transform:none}
.reveal-fallback .reveal{transform:none!important;transition:none!important}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(380px,.92fr);gap:22px}
  .phone-front{width:224px}
  .phone-back{width:200px;left:9%}
  .hero-media::before{width:340px;height:400px}
  .download-grid{gap:12px}
  .scenario-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:920px){
  .container{width:min(100% - 34px,1160px)}
  .primary-nav{position:absolute;top:calc(100% + 4px);left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:1px;padding:8px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 18px 38px -24px rgba(13,43,96,.35)}
  .js .primary-nav{opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
  .js .primary-nav.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .primary-nav a{padding:11px 12px;border-radius:9px;font-size:13px;display:flex;align-items:center;min-height:46px}
  .menu-toggle{display:grid}
  .hero{padding-top:44px}
  .hero::before{width:78%;height:80%;left:-22%;right:auto;bottom:-40%}
  .hero-grid{grid-template-columns:1fr;gap:10px}
  .hero-copy{text-align:center}
  .hero-badges,.hero-actions,.hero-meta{justify-content:center}
  .hero-badges{margin-inline:auto}
  .h1-main{white-space:normal}
  .hero-lead{margin-inline:auto}
  .hero-media{min-height:490px;margin-top:4px}
  .hero-media::before{width:360px;height:420px}
  .phone-front{width:232px}
  .phone-back{width:208px;left:17%}
  .float-badge{display:none}
  .hero-logo{left:16%;bottom:20px}
  .hero-sticker{right:14%;top:2px}
  .stats{grid-template-columns:1fr 1fr}
  .stats > div + div::before{display:none}
  .stats > div:nth-child(2n)::before{content:"";display:block;position:absolute;left:0;top:20%;height:60%;width:1px;background:var(--line)}
  .stats > div:nth-child(n+3){border-top:1px solid var(--line)}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .preview-grid{display:flex;gap:13px;overflow-x:auto;margin-inline:-17px;padding:2px 17px 13px;scroll-snap-type:x mandatory;scrollbar-width:none}
  .preview-grid::-webkit-scrollbar{display:none}
  .preview-card{flex:0 0 min(65vw,300px);scroll-snap-align:center}
  .swipe-hint{display:flex}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .install-grid{grid-template-columns:1fr;gap:24px}
  .install-intro{position:static;max-width:620px}
  .faq-grid{grid-template-columns:1fr;gap:24px}
  .faq-aside{position:static;max-width:620px}
  .section-head-split{grid-template-columns:1fr;gap:10px}
  .about-grid{grid-template-columns:1fr;gap:24px}
  .about-copy{max-width:620px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}

@media (max-width:720px){
  .container{width:min(100% - 28px,1160px)}
  .section{padding:66px 0}
  .nav-shell{min-height:64px;gap:10px}
  .brand img{width:39px;height:39px;border-radius:10px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:6.5px}
  .nav-actions .btn span{display:none}
  .nav-actions .btn{padding:0 11px;min-height:42px}
  .menu-toggle{width:42px;height:42px}
  .hero{padding:34px 0 46px}
  .hero::before{width:90%;height:56%;left:-32%;right:auto;bottom:-24%}
  .h1-main{font-size:clamp(32px,8.8vw,43px);line-height:1.18}
  .h1-sub{font-size:clamp(22px,6vw,29px);margin-top:7px}
  .hero-lead{font-size:13px;line-height:1.88;margin-top:13px}
  .hero-actions{margin-top:18px}
  .hero-actions .btn{width:100%}
  .hero-note{font-size:9.5px;margin-top:10px}
  .hero-media{min-height:400px;margin-top:2px}
  .hero-media::before{width:280px;height:340px;box-shadow:0 0 0 20px rgba(255,255,255,.04),0 0 0 40px rgba(255,255,255,.025)}
  .phone-front{width:198px;padding:6px;border-width:3px;border-radius:24px}
  .phone-back{width:170px;left:8%;top:38px;padding:5px;border-width:3px;border-radius:22px}
  .phone-screen{border-radius:17px}
  .hero-logo{width:58px;height:58px;left:8%;bottom:18px;border-width:3px;border-radius:16px}
  .hero-logo img{width:50px;height:50px;border-radius:10px}
  .hero-sticker{width:52px;height:52px;font-size:8px;right:7%;top:0}
  .stats-wrap{margin-top:-20px}
  .stats{border-radius:16px}
  .stats > div{padding:15px 14px}
  .stats b{font-size:22px}
  .stats span:not(b span){font-size:8px}
  .section-head{margin-bottom:25px}
  h2{font-size:clamp(25px,6.9vw,33px)}
  .section-desc{font-size:12.3px;line-height:1.88}
  .download-grid{grid-template-columns:1fr;gap:10px}
  .download-card{min-height:auto;padding:18px}
  .download-card h3{font-size:16px}
  .dl-link{min-height:44px;padding-top:4px;padding-bottom:4px;align-items:center}
  .preview-card{flex-basis:80vw}
  .device{width:206px}
  .preview-card > p{font-size:11px}
  .feature-grid{grid-template-columns:1fr;gap:10px}
  .feature-card{min-height:auto;padding:18px}
  .feature-card p{font-size:11.5px}
  .step{grid-template-columns:38px 1fr;padding:13px;gap:10px}
  .step-num{width:38px;height:38px;font-size:13px}
  .step p{font-size:10.8px}
  .platform-grid{grid-template-columns:1fr}
  .faq-list summary{min-height:50px;font-size:11px;padding:10px 12px}
  .faq-a{padding:0 12px 12px}
  .faq-a p{font-size:10.6px}
  .faq-aside{padding:19px 17px}
  .scenario-grid{grid-template-columns:1fr;gap:9px}
  .scenario-card > p{font-size:11.5px}
  .hot-head{display:block}
  .hot-head p{margin-top:6px;text-align:left;font-size:9.5px}
  .tag-cloud a{min-height:44px;padding:0 12px;font-size:10.5px}
  .about-card{padding:15px}
  .about-copy p{font-size:11.5px}
  .about-list li{font-size:10.5px}
  .footer-nav a{font-size:10px;padding:1px 0}
  .footer-disclaimer p{font-size:9px}
  .cta-panel{padding:42px 15px 39px;border-radius:22px}
  .cta-actions .btn{width:100%;max-width:330px}
  .site-footer{padding-bottom:96px}
  .footer-nav{gap:14px}
  .footer-bottom{display:block;line-height:1.8}
  .footer-bottom p+p{margin-top:2px}
  .footer-bottom a{margin-top:5px}
  .mobile-dock{display:flex;align-items:center;gap:7px;position:fixed;z-index:90;left:50%;bottom:calc(8px + env(safe-area-inset-bottom));transform:translateX(-50%);width:calc(100% - 20px);max-width:600px;min-height:55px;padding:6px 7px 6px 8px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.98);box-shadow:0 14px 34px -18px rgba(13,43,96,.38)}
  .mobile-dock > img{width:37px;height:37px;border-radius:10px;object-fit:contain;background:var(--blue)}
  .dock-text{flex:1;min-width:0;line-height:1.3}
  .dock-text b{display:block;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .dock-text span{display:block;margin-top:1px;color:var(--muted-2);font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .mobile-dock .btn{min-height:44px;padding:0 16px;font-size:10.5px}
  .toast{bottom:78px;font-size:9px}
}

@media (max-width:430px){
  .container{width:min(100% - 24px,1160px)}
  .brand-text{max-width:90px}
  .brand-name{font-size:17px}
  .h1-main{font-size:clamp(28px,8.4vw,36px)}
  .h1-sub{font-size:clamp(19px,5.4vw,25px)}
  .hero-actions .btn{font-size:12px}
  .hero-media{min-height:370px}
  .phone-front{width:184px}
  .phone-back{width:158px;left:5%}
  .phone-back .phone-screen img{opacity:.95}
  .device{width:194px}
  .preview-card{flex-basis:84vw}
  .cta-actions .btn{max-width:none}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js .reveal{transform:none}
}