/* ==========================================================================
   LogoForge — Global Stylesheet
   Design language: clean SaaS, teal + navy + amber, Space Grotesk / Poppins
   ========================================================================== */

/* ---------- Tokens ---------- */
:root{
  --bg:#F7F9FA;
  --surface:#FFFFFF;
  --surface-2:#F1F5F7;
  --ink:#0F172A;
  --ink-2:#334155;
  --muted:#64748B;
  --line:#E6EAF0;
  --brand:#0D9488;
  --brand-deep:#0F766E;
  --brand-soft:#E3F4F2;
  --brand-ink:#0B5F58;
  --accent:#F59E0B;
  --accent-deep:#D97706;
  --accent-soft:#FDF1DE;
  --danger:#DC2626;
  --success:#16A34A;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:8px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05),0 1px 3px rgba(15,23,42,.06);
  --shadow:0 6px 24px -8px rgba(15,23,42,.12),0 2px 6px -2px rgba(15,23,42,.06);
  --shadow-lg:0 20px 50px -16px rgba(15,23,42,.22);
  --container:1180px;
  --header-h:68px;
  --font-display:'Space Grotesk','Poppins','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-body:'Poppins','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:var(--brand-deep);text-decoration:none}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5{font-family:var(--font-display);line-height:1.2;margin:0 0 .6em;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.3em}
li{margin-bottom:.35em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;border:1px solid transparent;
  font-family:var(--font-body);font-size:.95rem;font-weight:600;line-height:1.2;
  cursor:pointer;text-decoration:none;transition:all .18s ease;white-space:nowrap;
}
.btn svg{flex:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px -4px rgba(13,148,136,.5)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px -6px rgba(13,148,136,.55)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e293b;color:#fff;transform:translateY(-1px)}
.btn-sm{padding:8px 14px;font-size:.85rem;border-radius:10px}
.btn-lg{padding:15px 30px;font-size:1.05rem;border-radius:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none!important}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.22rem;color:var(--ink);letter-spacing:-.02em}
.brand:hover{color:var(--ink)}
.brand svg{width:30px;height:30px}
.brand .brand-sub{font-size:.68rem;font-weight:600;color:var(--muted);letter-spacing:.14em;text-transform:uppercase;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px}
.main-nav a{
  padding:8px 12px;border-radius:10px;font-size:.92rem;font-weight:500;color:var(--ink-2);transition:all .15s;
}
.main-nav a:hover{color:var(--brand-deep);background:var(--surface-2)}
.main-nav a.active{color:var(--brand-deep);background:var(--brand-soft);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang-toggle{
  display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid var(--line);
  border-radius:10px;background:var(--surface);font-size:.85rem;font-weight:600;color:var(--ink-2);cursor:pointer;transition:all .15s;
}
.lang-toggle:hover{border-color:var(--brand);color:var(--brand-deep)}
.lang-toggle svg{width:15px;height:15px}
/* segmented EN / 中 language switcher */
.lang-switch{
  display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);
  border-radius:10px;background:var(--surface);
}
.lang-btn{
  appearance:none;border:0;background:transparent;cursor:pointer;
  min-width:38px;padding:6px 10px;border-radius:7px;
  font-size:.82rem;font-weight:700;letter-spacing:.02em;color:var(--ink-2);
  transition:background .15s,color .15s;
}
.lang-btn:hover{color:var(--brand-deep)}
.lang-btn.active{background:var(--brand);color:#fff;box-shadow:0 4px 10px -4px rgba(13,148,136,.55)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#CBD5E1;margin-top:0}
.footer-main{padding-block:56px 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:#fff;margin-bottom:12px}
.footer-brand svg{width:28px;height:28px}
.footer-blurb{font-size:.9rem;max-width:300px}
.footer-col h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.footer-col a{display:block;color:#94A3B8;font-size:.9rem;padding:4px 0;transition:color .15s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-block:18px;font-size:.85rem;color:#94A3B8;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
.footer-bottom .foot-note{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:#CBD5E1}

/* ---------- Hero (home) ---------- */
.hero{padding:72px 0 56px;text-align:center;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:auto -10% -40% -10%;height:420px;pointer-events:none;
  background:radial-gradient(600px 260px at 50% 100%,rgba(13,148,136,.10),transparent 70%);
}
.hero .container{position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:.88rem;font-weight:600;
}
.eyebrow svg{width:14px;height:14px}
.hero h1{font-size:clamp(2.3rem,5.4vw,3.7rem);margin:22px auto 16px;max-width:820px;letter-spacing:-.025em}
.hero h1 .grad{background:linear-gradient(92deg,var(--brand) 10%,var(--accent) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1rem,1.5vw,1.16rem);color:var(--muted);max-width:640px;margin:0 auto 30px}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-trust{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:26px;color:var(--muted);font-size:.86rem}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust svg{width:15px;height:15px;color:var(--brand)}

/* Logo wall */
.logo-wall{padding:0 0 40px}
.wall-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}
.wall-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;
  text-align:center;cursor:pointer;transition:all .18s ease;box-shadow:var(--shadow-sm);
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(13,148,136,.4)}
.wall-card .wall-logo{height:120px;display:grid;place-items:center;border-radius:10px;background:
  conic-gradient(#fff 25%,var(--surface-2) 0 50%,#fff 0 75%,var(--surface-2) 0) 0 0/22px 22px;margin-bottom:10px;overflow:hidden}
.wall-card .wall-logo svg{max-width:78%;max-height:88px;width:auto;height:auto}
.wall-card .wall-name{font-family:var(--font-display);font-weight:600;font-size:.9rem;color:var(--ink-2)}
.wall-card .wall-tag{font-size:.72rem;color:var(--muted)}

/* ---------- Sections ---------- */
.section{padding:56px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.2rem)}
.section-head p{color:var(--muted);margin:10px auto 0}

.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:18px}
.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:all .18s;box-shadow:var(--shadow-sm)}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.feature-icon{width:50px;height:50px;border-radius:14px;background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;margin-bottom:16px}
.feature-icon svg{width:24px;height:24px}
.feature-card h3{font-size:1.08rem;margin-bottom:8px}
.feature-card p{font-size:.92rem;color:var(--muted);margin:0}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 22px}
.step-num{font-family:var(--font-display);font-weight:700;font-size:2rem;color:var(--brand);opacity:.9}
.step h3{font-size:1.05rem;margin:10px 0 8px}
.step p{font-size:.9rem;color:var(--muted);margin:0}

.tpl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.tpl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;cursor:pointer;transition:all .18s;box-shadow:var(--shadow-sm);text-align:center}
.tpl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(13,148,136,.4)}
.tpl-card .tpl-logo{height:140px;display:grid;place-items:center;border-radius:12px;margin-bottom:12px;background:
  conic-gradient(#fff 25%,var(--surface-2) 0 50%,#fff 0 75%,var(--surface-2) 0) 0 0/22px 22px;overflow:hidden}
.tpl-card .tpl-logo svg{max-width:86%;max-height:110px;width:auto;height:auto}
.tpl-card .tpl-name{font-family:var(--font-display);font-weight:600;font-size:.92rem}
.tpl-card .tpl-desc{font-size:.76rem;color:var(--muted)}

.industry-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:860px;margin:0 auto}
.industry-chip{padding:9px 16px;border:1px solid var(--line);background:var(--surface);border-radius:999px;font-size:.86rem;font-weight:500;color:var(--ink-2);cursor:pointer;transition:all .15s}
.industry-chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.industry-chip .dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:7px;vertical-align:middle}

/* FAQ */
.faq{max-width:780px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);margin-bottom:10px;overflow:hidden}
.faq summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;cursor:pointer;font-weight:600;font-size:.98rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{flex:none;width:22px;height:22px;border-radius:7px;background:var(--surface-2);display:grid;place-items:center;transition:transform .2s;color:var(--brand-deep)}
.faq summary .plus svg{width:12px;height:12px}
.faq details[open] summary .plus{transform:rotate(45deg)}
.faq .faq-a{padding:0 18px 16px;color:var(--muted);font-size:.93rem}
.faq .faq-a p{margin-bottom:.6em}

/* CTA band */
.cta-band{background:linear-gradient(120deg,var(--brand-deep),var(--brand) 55%,#14B8A6);border-radius:24px;padding:52px 32px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(1.5rem,3vw,2rem);color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 24px}
.cta-band .btn{background:#fff;color:var(--brand-deep)}
.cta-band .btn:hover{background:var(--accent-soft)}
.cta-band .btn.btn-dark{background:var(--ink);color:#fff}
.cta-band .btn.btn-dark:hover{background:#1e293b}

/* ---------- Maker page ---------- */
.page-hero{padding:36px 0 8px}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.3rem);margin-bottom:6px}
.page-hero p{color:var(--muted);margin:0 0 18px;max-width:720px}
.page-hero .hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}

.maker-grid{display:grid;grid-template-columns:400px minmax(0,1fr);gap:20px;align-items:start;padding-block:22px 60px}
.controls-panel,.preview-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.controls-panel{padding:20px}
.preview-panel{position:sticky;top:calc(var(--header-h) + 14px)}
.preview-panel .preview-body{padding:20px}

.ctl{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}
.ctl:first-of-type{border-top:0;padding-top:0;margin-top:0}
.ctl-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.ctl-title h3{font-size:.98rem;margin:0}
.ctl-title .ctl-hint{font-size:.75rem;color:var(--muted);font-weight:500}

.field{margin-bottom:14px}
.field label{display:block;font-size:.84rem;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.text-input{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;
  font-family:var(--font-body);font-size:.95rem;color:var(--ink);transition:border-color .15s,box-shadow .15s;
}
.text-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(13,148,136,.14)}
.select-input{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;
  font-family:var(--font-body);font-size:.92rem;color:var(--ink);appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;
}
.select-input:focus{outline:none;border-color:var(--brand)}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:7px 13px;border:1px solid var(--line);background:#fff;border-radius:999px;
  font-size:.83rem;font-weight:500;color:var(--ink-2);cursor:pointer;transition:all .14s;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.chip.active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip .rec-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:6px;vertical-align:middle}
.chip .font-sample{font-size:.95rem}

.icon-picker .icon-search{position:relative;margin-bottom:10px}
.icon-picker .icon-search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:var(--muted)}
.icon-picker .icon-search input{padding-left:34px}
.cat-chips{margin-bottom:10px;display:flex;gap:6px;flex-wrap:wrap}
.cat-chip{padding:5px 11px;border:1px solid var(--line);border-radius:999px;font-size:.76rem;font-weight:600;color:var(--muted);cursor:pointer;background:#fff;transition:all .14s}
.cat-chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.cat-chip.active{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep)}
.icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;max-height:250px;overflow-y:auto;padding:2px}
.icon-btn{
  aspect-ratio:1;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer;
  display:grid;place-items:center;color:var(--ink-2);transition:all .13s;position:relative;padding:0;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);transform:scale(1.06)}
.icon-btn.active{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep)}
.icon-btn .rec-badge{position:absolute;top:-4px;right:-4px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid #fff}

.swatch-row{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-bottom:12px}
.swatch{
  aspect-ratio:1;border-radius:10px;border:2px solid var(--line);cursor:pointer;position:relative;transition:transform .13s;
}
.swatch:hover{transform:scale(1.08)}
.swatch.active{border-color:var(--ink);box-shadow:0 0 0 2px #fff inset}
.color-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:10px}
.color-field{position:relative;display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;padding:6px 10px;background:#fff;cursor:pointer}
.color-field input[type=color]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}
.color-swatch{width:26px;height:26px;border-radius:8px;border:1px solid var(--line);flex:none}
.color-field .hex{font-size:.78rem;font-weight:600;color:var(--ink-2);font-family:ui-monospace,monospace}
.color-field span:last-child{font-size:.72rem;color:var(--muted)}

.range-row{display:flex;align-items:center;gap:10px}
.range-row input[type=range]{flex:1;accent-color:var(--brand);height:4px}
.range-row output{font-size:.8rem;font-weight:600;color:var(--muted);min-width:34px;text-align:right}
input[type=range]{cursor:pointer}

.switch-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:6px 0}
.switch-row span{font-size:.86rem;font-weight:500;color:var(--ink-2)}
.switch{position:relative;width:42px;height:24px;flex:none}
.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer;z-index:2}
.switch .track{position:absolute;inset:0;background:var(--line);border-radius:999px;transition:background .2s}
.switch .thumb{position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;box-shadow:0 1px 3px rgba(15,23,42,.3);transition:transform .2s}
.switch input:checked + .track{background:var(--brand)}
.switch input:checked ~ .thumb{transform:translateX(18px)}

.action-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.action-row .btn{flex:1;min-width:120px}

/* Preview */
.preview-stage{
  border:1px solid var(--line);border-radius:16px;min-height:420px;display:grid;place-items:center;padding:26px;
  background:conic-gradient(#fff 25%,var(--surface-2) 0 50%,#fff 0 75%,var(--surface-2) 0) 0 0/22px 22px;
  position:relative;overflow:hidden;
}
.preview-stage .stage-inner{width:100%;display:grid;place-items:center}
.preview-stage svg{max-width:76%;max-height:330px;width:auto;height:auto;filter:drop-shadow(0 10px 22px rgba(15,23,42,.14))}
.preview-size-tag{position:absolute;right:12px;bottom:12px;font-size:.7rem;font-weight:600;color:var(--muted);background:rgba(255,255,255,.85);border:1px solid var(--line);padding:3px 9px;border-radius:999px}

.mock-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.mock-frame{border:1px solid var(--line);border-radius:14px;margin-top:10px;padding:18px;display:grid;place-items:center;min-height:190px;background:var(--surface-2);overflow:hidden}
.mock-frame .mock-logo-svg{max-height:120px;width:auto}
.mock-frame .mock-logo-svg.lg{max-height:150px}

.export-card{border-top:1px solid var(--line);margin-top:16px;padding-top:16px}
.export-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.export-grid .btn{flex-direction:column;padding:10px 6px;font-size:.8rem;gap:2px}
.export-grid .btn small{font-size:.68rem;font-weight:500;opacity:.7}
.pack-btn{grid-column:1/-1}

.preview-tip{display:flex;gap:8px;align-items:flex-start;margin-top:14px;padding:11px 13px;background:var(--brand-soft);border-radius:10px;font-size:.8rem;color:var(--brand-ink)}
.preview-tip svg{width:15px;height:15px;flex:none;margin-top:2px}

/* View tabs (mobile) */
.view-tabs{display:none;position:sticky;top:var(--header-h);z-index:90;background:var(--bg);padding:10px 0;border-bottom:1px solid var(--line)}
.view-tabs .inner{display:flex;gap:8px}
.view-tab{
  flex:1;padding:11px;border:1px solid var(--line);border-radius:12px;background:var(--surface);
  font-weight:600;font-size:.92rem;color:var(--ink-2);cursor:pointer;transition:all .15s;
}
.view-tab.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- Articles hub ---------- */
.art-filter{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:30px}
.art-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.art-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .18s;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
}
.art-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(13,148,136,.35)}
.art-thumb{height:130px;display:flex;align-items:center;justify-content:center;color:#fff;position:relative;overflow:hidden}
.art-thumb .big-letter{font-family:var(--font-display);font-weight:700;font-size:3.2rem;letter-spacing:-.04em;text-shadow:0 4px 18px rgba(15,23,42,.25)}
.art-thumb svg{position:absolute;right:14px;bottom:12px;width:26px;height:26px;opacity:.55}
.art-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.art-meta{display:flex;align-items:center;gap:10px;font-size:.76rem;color:var(--muted);margin-bottom:10px;flex-wrap:wrap}
.cat-chip-pill{padding:3px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.art-body h3{font-size:1.06rem;line-height:1.35;margin-bottom:8px}
.art-body h3 a{color:var(--ink)}
.art-body h3 a:hover{color:var(--brand-deep)}
.art-body p{font-size:.88rem;color:var(--muted);margin:0 0 14px;flex:1}
.art-link{font-size:.86rem;font-weight:600}

/* ---------- Article page ---------- */
.breadcrumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.82rem;color:var(--muted);margin:0 0 16px}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--brand-deep)}
.breadcrumbs svg{width:12px;height:12px}
.article-head{max-width:820px;margin:0 auto 30px;text-align:center}
.article-head h1{font-size:clamp(1.7rem,3.6vw,2.5rem);margin:14px 0 12px;letter-spacing:-.02em}
.article-head .lead{color:var(--muted);font-size:1.05rem;max-width:680px;margin:0 auto}
.article-meta{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;font-size:.84rem;color:var(--muted);margin-top:16px}
.article-meta .sep{opacity:.5}

.prose{max-width:780px;margin:0 auto;font-size:1.03rem;line-height:1.8;color:var(--ink-2)}
.prose h2{font-size:1.5rem;color:var(--ink);margin:2.1em 0 .7em}
.prose h3{font-size:1.18rem;color:var(--ink);margin:1.8em 0 .6em}
.prose p{margin-bottom:1.1em}
.prose a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.prose ul,.prose ol{margin-bottom:1.2em}
.prose li{margin-bottom:.5em}
.prose strong{color:var(--ink)}
.prose blockquote{margin:1.4em 0;padding:14px 18px;border-left:4px solid var(--brand);background:var(--brand-soft);border-radius:0 12px 12px 0;color:var(--ink-2)}
.prose blockquote p{margin:0}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.92rem;table-layout:fixed}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.prose th{background:var(--surface-2);font-weight:600;color:var(--ink)}
.prose .tip{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 12px 12px 0;padding:14px 18px;margin:1.4em 0;font-size:.95rem;color:var(--ink-2)}
.prose .tip strong{color:var(--accent-deep)}
.prose .steps-box{margin:1.4em 0;counter-reset:pstep}
.prose .steps-box .pstep{display:flex;gap:14px;margin-bottom:14px}
.prose .steps-box .pstep::before{
  counter-increment:pstep;content:counter(pstep);flex:none;width:30px;height:30px;border-radius:9px;
  background:var(--brand);color:#fff;font-family:var(--font-display);font-weight:700;font-size:.9rem;
  display:grid;place-items:center;margin-top:3px;
}

.author-box{max-width:780px;margin:40px auto 0;display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.author-avatar{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#14B8A6);color:#fff;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;flex:none}
.author-box h4{margin:0 0 4px;font-size:1rem}
.author-box p{font-size:.86rem;color:var(--muted);margin:0}

.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.related-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px;transition:all .15s}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(13,148,136,.35)}
.related-card .cat{font-size:.72rem;font-weight:600;color:var(--brand-deep);text-transform:uppercase;letter-spacing:.06em}
.related-card h4{font-size:.95rem;margin:8px 0 6px;line-height:1.35}
.related-card h4 a{color:var(--ink)}
.related-card h4 a:hover{color:var(--brand-deep)}

/* ---------- Favorites ---------- */
.fav-toolbar{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;margin-bottom:22px}
.fav-toolbar .left{font-size:.9rem;color:var(--muted)}
.fav-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.fav-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.fav-logo{height:190px;display:grid;place-items:center;background:conic-gradient(#fff 25%,var(--surface-2) 0 50%,#fff 0 75%,var(--surface-2) 0) 0 0/22px 22px;padding:14px}
.fav-logo svg{max-width:82%;max-height:150px;width:auto;height:auto}
.fav-meta{padding:12px 14px;border-top:1px solid var(--line)}
.fav-meta h3{font-size:.95rem;margin:0 0 8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fav-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.fav-actions .btn{font-size:.76rem;padding:7px 4px;flex-direction:column;gap:2px;border-radius:9px}
.fav-actions .btn small{font-size:.62rem;opacity:.65;font-weight:500}
.empty-state{text-align:center;padding:60px 20px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius)}
.empty-state svg{width:56px;height:56px;margin:0 auto 18px;color:var(--line)}
.empty-state h2{font-size:1.3rem}
.empty-state p{color:var(--muted);max-width:420px;margin:0 auto 20px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:start}
.form-card,.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.form-card h2,.info-card h2{font-size:1.2rem;margin-bottom:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.info-card .info-item{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line)}
.info-card .info-item:last-child{border-bottom:0;padding-bottom:0}
.info-icon{width:38px;height:38px;border-radius:10px;background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;flex:none}
.info-icon svg{width:18px;height:18px}
.info-card h3{font-size:.95rem;margin:0 0 3px}
.info-card p{font-size:.86rem;color:var(--muted);margin:0}
.info-card a{font-weight:600}

/* ---------- About ---------- */
.about-hero{text-align:center;max-width:760px;margin:0 auto}
.mission-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.timeline{display:grid;grid-template-columns:110px 24px 1fr;gap:0 16px;max-width:720px;margin:0 auto}
.timeline .t-time{text-align:right;font-weight:600;font-size:.9rem;color:var(--brand-deep);padding-bottom:30px}
.timeline .t-axis{position:relative;justify-self:center;width:2px;background:var(--line)}
.timeline .t-axis::before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:12px;height:12px;border-radius:50%;background:var(--brand);border:2px solid #fff;box-shadow:0 0 0 2px var(--brand-soft)}
.timeline .t-content{padding-bottom:30px}
.timeline .t-content h3{font-size:1.02rem;margin:0 0 4px}
.timeline .t-content p{font-size:.9rem;color:var(--muted);margin:0}
.timeline .t-time:empty{padding-bottom:0}
.timeline .t-content:empty{display:none}

/* ---------- Generic ---------- */
.bilingual-block[data-lang="zh"]{display:none}
body.lang-zh .bilingual-block[data-lang="en"]{display:none}
body.lang-zh .bilingual-block[data-lang="zh"]{display:block}

.toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);z-index:200;
  background:var(--ink);color:#fff;padding:12px 20px;border-radius:12px;font-size:.9rem;font-weight:500;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:all .25s ease;display:flex;gap:8px;align-items:center;max-width:90vw;
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast svg{width:17px;height:17px;color:#4ADE80;flex:none}

.page-wrap{min-height:calc(100vh - var(--header-h))}
.section-title-line{text-align:center;max-width:680px;margin:0 auto 34px}
.section-title-line h2{font-size:clamp(1.5rem,3vw,2rem)}
.section-title-line p{color:var(--muted);margin:10px 0 0}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .maker-grid{grid-template-columns:350px minmax(0,1fr)}
  .icon-grid{grid-template-columns:repeat(5,1fr)}
}
@media (max-width:960px){
  .main-nav{
    position:fixed;inset:var(--header-h) 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:2px;padding:12px 16px 18px;box-shadow:var(--shadow);
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:all .18s ease;margin:0;
  }
  .main-nav.open{transform:none;opacity:1;pointer-events:auto}
  .main-nav a{padding:12px 14px;font-size:1rem}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .maker-grid{grid-template-columns:minmax(0,1fr)}
  .maker-grid > *{min-width:0}
  .preview-panel{position:static}
  .view-tabs{display:block}
  .view-panel{display:none}
  .view-panel.active{display:block}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .steps{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  :root{--header-h:60px}
  .hero{padding:52px 0 40px}
  .section{padding:42px 0}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .form-row{grid-template-columns:1fr}
  .industry-chip{min-height:44px}
  .lang-toggle,.nav-toggle{min-width:44px;min-height:44px}
  .lang-switch .lang-btn{min-width:44px;min-height:40px}
  .hero-trust{font-size:.9rem}
  .related-grid{grid-template-columns:1fr}
  .export-grid{grid-template-columns:1fr 1fr}
  .icon-grid{grid-template-columns:repeat(6,1fr)}
  .timeline{grid-template-columns:84px 20px 1fr;gap:0 10px}
  .preview-stage{min-height:340px}
  .hero-cta .btn{width:100%;max-width:340px}
  .fav-toolbar{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}