/* =========================================================================
   SwiftGG Brand Guidelines — styles
   Interface/body type: system sans (San Francisco / Segoe UI / PingFang SC).
   Dongle is used ONLY for the SwiftGG logotype (.logo-type and the SVG marks).
   ========================================================================= */
@import url('../fonts/fonts.css');

:root{
  --blue:#2782FB;      /* Swift Blue */
  --orange:#FB6131;    /* GG Orange  */
  --ink:#0B0B0F;
  --paper:#FFFFFF;
  --mist:#F5F6F8;
  --line:#E4E7EC;
  --muted:#737682;
  --maxw:1140px;
  --r:18px;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --logo:'Dongle',var(--font);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.logo-type{font-family:var(--logo);font-weight:400;letter-spacing:0}

/* ---- language switch ---- */
html[data-lang="en"] .zh{display:none}
html[data-lang="zh"] .en{display:none}
html[data-lang="zh"]{letter-spacing:.2px}

a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:92px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}

h1,h2,h3{font-weight:700;letter-spacing:-.3px}
h2.title{font-size:44px;line-height:1.05;margin-bottom:8px}
html[data-lang="zh"] h2.title{font-size:32px;line-height:1.3;letter-spacing:0}
.kicker{font-size:13px;letter-spacing:2.5px;text-transform:uppercase;color:var(--blue);margin-bottom:16px;font-weight:700}
html[data-lang="zh"] .kicker{letter-spacing:2px}
.lead{font-size:22px;line-height:1.4;color:#33363f;max-width:760px;margin-top:16px;font-weight:400}
html[data-lang="zh"] .lead{font-size:19px;line-height:1.7}
.muted{color:var(--muted)}
p{margin-top:14px;max-width:720px;color:#3a3d46;font-size:17px;line-height:1.65}
.small{font-size:14px;color:var(--muted);line-height:1.55}

/* ====================== NAV ====================== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:62px}
.nav .brand{display:flex;align-items:center}
.nav .brand img{height:30px;width:auto}
.nav .links{display:flex;gap:22px;margin-left:auto;font-size:16px}
.nav .links a{color:#45474f}
.nav .links a:hover{color:var(--blue)}
html[data-lang="zh"] .nav .links{font-size:15px}
.nav .tools{display:flex;align-items:center;gap:10px}

/* toggle + button — identical height, rounded-rect, monochrome, centered text */
.langtoggle{display:flex;align-items:center;height:38px;border:1px solid var(--ink);
  border-radius:9px;padding:3px;gap:3px;background:#fff}
.langtoggle button{height:100%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font);background:transparent;border:0;cursor:pointer;border-radius:6px;
  padding:0 13px;color:var(--ink);font-size:14px;letter-spacing:.5px;line-height:1}
.langtoggle button.active{background:var(--ink);color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;
  background:var(--ink);color:#fff;border:1px solid var(--ink);border-radius:9px;
  padding:0 16px;font-size:14px;font-family:var(--font);cursor:pointer;line-height:1;
  letter-spacing:.3px;transition:transform .15s ease,opacity .15s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px);opacity:.92}
.btn.lg{height:46px;font-size:15px;padding:0 22px;border-radius:11px}
@media(max-width:860px){.nav .links{display:none}}

/* ====================== HERO ====================== */
.hero{position:relative;overflow:hidden;padding:118px 0 96px;border-top:0;background:#fff}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;
  filter:blur(70px);z-index:0;pointer-events:none;will-change:transform}
.hero::before{width:640px;height:640px;top:-230px;right:6%;
  background:radial-gradient(circle,rgba(39,130,251,.50),rgba(39,130,251,0) 70%);
  animation:glowA 15s ease-in-out infinite}
.hero::after{width:560px;height:560px;top:-150px;left:-7%;
  background:radial-gradient(circle,rgba(251,97,49,.45),rgba(251,97,49,0) 70%);
  animation:glowB 17s ease-in-out infinite}
.hero .wrap{position:relative;z-index:1}
.hero .lockup{height:150px;margin-bottom:30px;animation:floaty 6.5s ease-in-out infinite}
.hero h1{font-size:72px;line-height:1.04;font-weight:800;letter-spacing:-1.5px}
html[data-lang="zh"] .hero h1{font-size:48px;line-height:1.35;font-weight:700;letter-spacing:1px}
.hero .meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;font-size:14px;color:var(--muted)}
.hero .meta span{border:1px solid var(--line);border-radius:999px;padding:7px 15px;background:rgba(255,255,255,.6)}
@keyframes glowA{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-46px,34px) scale(1.14)}}
@keyframes glowB{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(54px,22px) scale(1.12)}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@media(prefers-reduced-motion:reduce){
  .hero::before,.hero::after,.hero .lockup{animation:none}
}
/* Mobile: drop the glow so a busy backdrop never muddies the logo */
@media(max-width:680px){
  .hero::before,.hero::after{display:none}
  .hero{padding:84px 0 64px}
  .hero .lockup{height:auto;width:auto;max-width:none;max-height:54px}
  .hero h1{font-size:42px;letter-spacing:-.5px}
  html[data-lang="zh"] .hero h1{font-size:34px}
}

/* ====================== generic blocks ====================== */
.grid{display:grid;gap:22px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.cols-3,.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr}}

.card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.card .pad{padding:18px 20px}
.card h3{font-size:21px;margin-bottom:3px;font-weight:700;letter-spacing:-.2px}
.card .stage{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;
  background:var(--mist);padding:26px;overflow:hidden}
.card .stage.dark{background:var(--ink)}
.card .stage.blue{background:var(--blue)}
.card .stage.orange{background:var(--orange)}
.card .stage img,.card .stage svg{max-height:118px;max-width:100%;width:auto;height:auto;object-fit:contain}
.tag{display:inline-block;font-size:12px;letter-spacing:.6px;text-transform:uppercase;
  color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px;margin-top:8px}
.tag.ok{color:#13854a;border-color:#bfe6cf;background:#eefbf3}
.tag.no{color:#c0382b;border-color:#f4c7c1;background:#fdeeec}

/* ====================== color swatches ====================== */
.swatch{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);cursor:pointer;background:#fff}
.swatch .chip{height:140px}
.swatch .info{padding:15px 17px}
.swatch .info .name{font-size:21px;font-weight:700}
.swatch .info .hex{font-size:14px;color:var(--muted);letter-spacing:.4px;margin-top:2px}
.swatch .row{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:5px;gap:10px}
.copy-flash{color:var(--blue)!important}

/* ====================== clear space / min size ====================== */
.diagram{background:var(--mist);border:1px solid var(--line);border-radius:var(--r);
  padding:40px;display:flex;align-items:center;justify-content:center}
.diagram svg{max-height:360px;width:100%}

/* ====================== type specimen ====================== */
.specimen{border:1px solid var(--line);border-radius:var(--r);padding:30px;background:#fff}
.specimen .big{font-family:var(--logo);font-weight:400;font-size:120px;line-height:1;letter-spacing:1px}
.glyphset{font-family:var(--logo);font-size:36px;letter-spacing:5px;color:#3a3d46;word-break:break-word;margin-top:6px;line-height:1.5}
.specimen .scale span{display:block;border-top:1px solid var(--line);padding:12px 0}
.specimen .scale span:first-child{border-top:0}

/* ====================== do / don't ====================== */
.dont .stage,.do .stage{position:relative}
.badge{position:absolute;top:16px;left:16px;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:700;z-index:2;
  box-shadow:0 2px 8px rgba(0,0,0,.18)}
.badge.no{background:#e0483a}
.badge.ok{background:#1aa45e}

/* ====================== download list ====================== */
.dl{display:flex;align-items:center;gap:15px;border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:#fff;transition:border-color .15s ease}
.dl:hover{border-color:var(--ink)}
.dl .ic{width:44px;height:44px;border-radius:10px;background:var(--mist);display:flex;align-items:center;justify-content:center;flex:0 0 auto;overflow:hidden}
.dl .grow{flex:1;min-width:0}
.dl .t{font-size:16px;font-weight:600}
.dl .d{font-size:13px;color:var(--muted)}

/* ====================== footer (minimal, monochrome) ====================== */
footer{border-top:1px solid var(--line);padding:34px 0}
footer .row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
footer .brand{display:flex;align-items:center;gap:9px}
footer .brand img{height:24px;width:auto}
footer .brand b{font-family:var(--logo);font-weight:400;font-size:28px;color:var(--ink);line-height:1}
footer .links{display:flex;gap:22px;margin-left:auto;font-size:15px;color:var(--muted)}
footer .links a:hover{color:var(--ink)}
footer .copy{margin-top:14px;font-size:14px;color:var(--muted)}
@media(max-width:620px){footer .links{margin-left:0;width:100%}}

/* table */
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;letter-spacing:.4px;text-transform:uppercase;font-size:12px}

.note{background:var(--mist);border-radius:14px;padding:16px 18px;border-left:4px solid var(--blue);margin-top:20px;font-size:15px;line-height:1.65}
.note.warn{border-left-color:var(--orange)}
.divider{height:1px;background:var(--line);margin:30px 0}
ul.clean{list-style:none;margin-top:12px}
ul.clean li{padding:9px 0;border-bottom:1px solid var(--line);font-size:17px}
ul.clean li:before{content:"›";color:var(--blue);margin-right:12px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:#eef0f4;padding:1px 6px;border-radius:5px}