@font-face { font-family: Manrope; src: url('assets/manrope.ttf') format('truetype'); font-style: normal; font-weight: 200 800; font-display: swap; }
:root { --ink:#18213d; --muted:#56627b; --coral:#dc344d; --coral-soft:#fff0f2; --line:#e5e8ef; --blue:#4434cc; --paper:#fff; font-family:Manrope, sans-serif; color:var(--ink); background:var(--paper); font-synthesis:none; }
* { box-sizing:border-box; }
body { margin:0; min-width:320px; }
a { color:inherit; text-underline-offset:4px; }
svg { width:24px; height:24px; fill:none; stroke:currentColor; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round; }
.svg-defs { position:absolute; width:0; height:0; overflow:hidden; }
.skip-link { position:absolute; left:20px; top:14px; z-index:10; padding:12px 16px; background:var(--ink); color:white; transform:translateY(-200%); }
.skip-link:focus { transform:translateY(0); }
a:focus-visible, button:focus-visible { outline:3px solid var(--blue); outline-offset:6px; border-radius:4px; }
h1:focus, main:focus { outline:none; }
.site-header { width:min(1280px, calc(100% - 96px)); margin:auto; height:116px; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid var(--line); }
.brand { display:flex; align-items:center; gap:9px; text-decoration:none; font-size:22px; font-weight:800; line-height:1.1; letter-spacing:-.035em; }
.brand img { object-fit:contain; }
.brand-description { display:block; font-size:11px; font-weight:600; letter-spacing:.015em; color:var(--muted); margin-top:5px; }
.guide-nav { display:flex; align-items:center; gap:32px; height:100%; }
.guide-nav a { display:flex; align-items:center; gap:9px; height:100%; color:var(--muted); font-size:13px; font-weight:700; text-decoration:none; position:relative; }
.guide-nav a[aria-current] { color:var(--ink); }
.guide-nav a[aria-current]::after { content:''; position:absolute; bottom:-1px; height:3px; left:0; right:0; background:var(--coral); }
.guide-nav a:hover { color:var(--coral); }
.guide-nav svg { width:17px; height:17px; }
main { width:min(1280px, calc(100% - 96px)); margin:auto; }
.mode { display:none; }
body[data-mode=pin] .mode-pin { display:grid; }
body[data-mode=usage] .mode-usage { display:block; }
.mode-pin { grid-template-columns: minmax(340px, .85fr) minmax(440px, 1.15fr); gap:44px; align-items:center; min-height:660px; padding:62px 0 66px; }
h1 { font-size:clamp(42px,4.5vw,64px); line-height:1.12; letter-spacing:-.04em; font-weight:800; margin:0; text-wrap:balance; }
h1 span { color:var(--blue); }
.intro { font-size:16px; line-height:1.8; color:var(--muted); margin:23px 0 0; max-width:47ch; }
.pin-steps, .usage-steps { list-style:none; margin:34px 0 30px; padding:0; }
.pin-steps li, .usage-steps li { display:flex; gap:16px; }
.pin-steps li + li { margin-top:24px; }
.step-number { flex:none; display:grid; place-items:center; height:31px; width:31px; border-radius:50%; background:var(--coral-soft); color:var(--coral); font-size:13px; font-weight:800; margin-top:2px; }
h2 { font-size:16px; line-height:1.5; margin:0 0 6px; font-weight:800; letter-spacing:-.02em; }
.pin-steps p, .usage-steps p { font-size:13px; line-height:1.8; color:var(--muted); margin:0; max-width:39ch; }
.pin-steps strong { font-weight:700; color:var(--ink); }
.inline-icon { display:inline-block; width:17px; height:17px; vertical-align:-4px; margin:0 2px; }
.primary-action { display:inline-flex; align-items:center; justify-content:space-between; gap:38px; padding:16px 23px; min-height:54px; background:var(--coral); border-radius:9px; color:white; font-size:14px; font-weight:800; text-decoration:none; transition:background .16s; }
.primary-action svg { width:21px; height:21px; }
.primary-action:hover { background:#bf263d; }
.alternative { margin:17px 0 0; color:var(--muted); font-size:12px; line-height:1.8; }
.alternative a { color:var(--ink); font-weight:700; }
.alternative a:hover { color:var(--coral); }
.pin-figure { margin:0; min-width:0; }
.browser-illustration { overflow:hidden; border-radius:16px; background:#eeeafd; box-shadow:0 22px 60px #27307416; width:100%; }
.browser-tabs { display:flex; align-items:center; height:47px; background:#e5e6ee; padding:9px 16px 0; gap:14px; }
.demo-tab { width:224px; height:38px; padding:0 13px; display:flex; align-items:center; gap:8px; background:#f9faff; border-radius:9px 9px 0 0; font-size:10px; color:#333d56; }
.demo-tab img { height:19px; width:19px; object-fit:contain; }
.demo-tab > span { margin-left:auto; font-size:17px; }
.new-tab-mark { font-size:20px; color:var(--muted); margin-bottom:5px; }
.browser-toolbar { height:56px; background:#f9faff; display:flex; align-items:center; gap:12px; padding:0 17px; color:#53617b; }
.browser-back, .browser-reload { font-family:sans-serif; font-size:23px; }
.demo-address { min-width:0; flex:1; height:32px; padding:0 12px; border-radius:16px; background:#e9edf5; display:flex; gap:9px; align-items:center; font-size:10px; color:#56627b; white-space:nowrap; overflow:hidden; }
.address-lock { height:9px; width:8px; flex:none; border:1.4px solid #758096; border-radius:2px; }
.puzzle-target, .pin-target { position:relative; flex:none; display:grid; place-items:center; width:36px; height:36px; color:var(--ink); background:#ffe5e9; border-radius:8px; }
.puzzle-target svg { width:22px; height:22px; }
.target-number { display:grid; place-items:center; position:absolute; height:23px; width:23px; border-radius:50%; font-size:11px; font-weight:800; background:var(--coral); color:white; outline:3px solid #fff; }
.puzzle-number { right:-8px; top:-11px; }
.browser-avatar { display:grid; place-items:center; width:24px; height:24px; flex:none; border-radius:50%; background:#bdc6eb; color:#304176; font-size:11px; font-weight:800; }
.browser-more { width:17px; height:17px; flex:none; }
.browser-page { height:342px; position:relative; background:linear-gradient(135deg,#efecff,#e3eaff); overflow:hidden; }
.page-watermark { position:absolute; left:29px; bottom:39px; color:#8077b5; display:flex; align-items:center; gap:11px; font-size:31px; font-weight:800; letter-spacing:-.035em; line-height:1.12; }
.page-watermark img { width:35px; height:44px; opacity:.7; }
.extensions-menu { position:absolute; top:4px; right:18px; width:min(337px,calc(100% - 42px)); background:white; border-radius:12px; box-shadow:0 10px 35px #28365326; }
.extensions-title { display:flex; align-items:center; justify-content:space-between; padding:22px 22px 0; font-weight:800; font-size:17px; }
.extensions-title > span { font-size:22px; font-weight:500; color:var(--muted); line-height:1; }
.menu-hint { color:var(--muted); font-size:11px; margin:7px 22px 20px; }
.extension-row { display:flex; align-items:center; gap:10px; padding:14px 17px; background:#fff5f6; margin:0 10px 16px; border-radius:8px; }
.extension-row > img { flex:none; width:32px; height:38px; object-fit:contain; }
.extension-row > span { flex:1; font-size:12px; font-weight:800; min-width:0; }
.extension-row > span > span { display:block; font-weight:500; color:var(--muted); font-size:10px; margin-top:3px; }
.pin-target { width:31px; height:32px; }
.pin-target svg { width:22px; height:22px; color:var(--coral); }
.pin-number { right:-8px; bottom:-10px; }
.menu-more { width:15px; height:19px; flex:none; }
.menu-footer { border-top:1px solid var(--line); padding:16px 21px; font-size:11px; display:flex; align-items:center; gap:12px; color:var(--muted); }
.settings-mark { font-size:19px; line-height:1; }
.pin-callout { position:absolute; right:47px; top:238px; color:#685a9b; font-size:12px; font-weight:700; display:flex; align-items:center; gap:10px; }
.callout-line { width:31px; height:25px; border-left:1px solid #8677ba; border-bottom:1px solid #8677ba; border-radius:0 0 0 8px; transform:translateY(-8px); }
figcaption { font-size:10px; line-height:1.7; color:var(--muted); text-align:center; margin-top:18px; }
.site-footer { width:min(1280px,calc(100% - 96px)); margin:0 auto; border-top:1px solid var(--line); min-height:83px; display:flex; align-items:center; justify-content:space-between; gap:20px; font-size:11px; color:var(--muted); }
.usage-intro { display:flex; align-items:center; justify-content:space-between; gap:32px; padding:48px 0 32px; }
.usage-intro h1 { font-size:clamp(42px,4vw,56px); }
.usage-intro .intro { margin-top:19px; }
.open-instruction { display:flex; align-items:center; gap:16px; max-width:340px; padding-right:20px; }
.open-instruction img { object-fit:contain; flex:none; }
.open-instruction p { font-size:14px; line-height:1.7; margin:0; }
.open-instruction span { display:block; margin-top:4px; color:var(--muted); font-size:12px; }
.usage-layout { display:grid; grid-template-columns:.65fr 1.35fr; align-items:center; gap:45px; }
.usage-steps { margin:0; }
.usage-steps li + li { margin-top:22px; }
.usage-steps h2 { font-size:14px; margin-bottom:3px; }
.usage-steps p { font-size:12px; line-height:1.7; }
.usage-figure { min-width:0; margin:0; }
.usage-figure > img { display:block; width:100%; height:auto; border-radius:14px; }
.usage-figure figcaption { margin-top:10px; }
.usage-bottom { margin:34px 0 33px; padding-top:25px; border-top:1px solid var(--line); display:flex; justify-content:space-between; align-items:center; gap:24px; }
.usage-bottom p { font-size:12px; color:var(--muted); line-height:1.8; margin:0; }
.usage-bottom p img { vertical-align:-6px; object-fit:contain; }
.usage-bottom a { display:inline-flex; align-items:center; gap:8px; font-size:11px; font-weight:700; text-decoration:none; }
.usage-bottom a:hover { color:var(--coral); }
.usage-bottom svg { height:17px; width:17px; }
.visually-hidden { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; border:0; }
@media(min-width:1500px) { .mode-pin { min-height:calc(100vh - 199px); } }
@media(max-width:1100px) {
  .site-header, main, .site-footer { width:calc(100% - 64px); }
  .mode-pin { grid-template-columns:minmax(300px,.9fr) minmax(350px,1.1fr); gap:27px; }
  h1 { font-size:44px; }
  .intro { font-size:14px; }
  .browser-toolbar { gap:9px; padding:0 12px; }
  .browser-back { display:none; }
  .demo-address { font-size:9px; padding:0 9px; }
  .usage-layout { gap:28px; grid-template-columns:.8fr 1.2fr; }
}
@media(max-width:800px) {
  .site-header { height:92px; }
  .site-header, main, .site-footer { width:calc(100% - 40px); }
  .mode-pin { grid-template-columns:1fr; padding:40px 0 40px; gap:40px; min-height:0; }
  .hero-copy { max-width:570px; }
  h1 { font-size:clamp(38px,7vw,54px); }
  .intro { font-size:15px; }
  .pin-steps { margin-top:28px; }
  .pin-steps p { max-width:49ch; }
  .pin-figure { width:100%; max-width:620px; justify-self:center; }
  .site-footer { min-height:86px; }
  .guide-nav { gap:20px; }
  .guide-nav a { font-size:11px; }
  .usage-intro { padding:36px 0 30px; flex-direction:column; align-items:flex-start; gap:24px; }
  .usage-intro h1 { font-size:44px; }
  .open-instruction { max-width:none; padding:0; }
  .usage-layout { grid-template-columns:1fr; gap:28px; }
  .usage-steps p { max-width:58ch; font-size:13px; }
  .usage-steps h2 { font-size:15px; }
  .usage-bottom { flex-direction:column; align-items:flex-start; gap:16px; }
}
@media(max-width:450px) {
  .brand { font-size:19px; gap:4px; }
  .brand img { width:32px; height:36px; }
  .brand-description { font-size:9px; }
  .guide-nav { gap:16px; }
  .guide-nav a { font-size:10px; }
  .guide-nav svg { display:none; }
  .site-header { height:82px; }
  h1 { font-size:37px; }
  .intro { font-size:14px; }
  .intro br { display:none; }
  .pin-steps h2 { font-size:15px; }
  .pin-steps p { font-size:12px; }
  .primary-action { width:100%; }
  .alternative { font-size:11px; }
  .browser-toolbar { gap:8px; padding:0 9px; }
  .browser-reload { display:none; }
  .demo-tab { width:205px; }
  .demo-address { font-size:8px; }
  .browser-more { display:none; }
  .extensions-menu { right:10px; width:calc(100% - 24px); }
  .page-watermark { font-size:25px; left:23px; bottom:30px; }
  .browser-page { height:330px; }
  .pin-callout { top:236px; right:29px; }
  figcaption { margin-top:12px; }
  .site-footer { flex-direction:column; justify-content:center; align-items:flex-start; gap:5px; padding:18px 0; font-size:10px; }
  .usage-intro h1 { font-size:39px; }
}
@media(prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; transition:none !important; animation:none !important; } }

/* Browser-diagram controls share the same authored SVG stroke system. */
.chrome-close { display:block; height:14px; width:14px; }
.new-tab-mark { width:18px; height:18px; flex:none; }
.browser-back, .browser-reload { width:19px; height:19px; flex:none; }
.settings-mark { width:17px; height:17px; flex:none; }