/* Northline Domains — original visual style (warm paper, deep-green + gold, serif headlines)
   tokens · base · header · hero · portfolio · contact · footer · responsive */

:root{
  --paper:#FBFAF7;
  --paper-2:#F3F1EB;
  --card:#FFFFFF;
  --ink:#10231E;
  --ink-soft:#3D4F4A;
  --muted:#6B7C77;
  --line:rgba(16,35,30,.12);
  --line-strong:rgba(16,35,30,.2);
  --brand:#0E7C66;
  --brand-deep:#0A5C4C;
  --brand-tint:rgba(14,124,102,.08);
  --gold:#B8873B;
  --gold-tint:rgba(184,135,59,.12);
  --shadow-sm:0 1px 2px rgba(16,35,30,.05), 0 6px 18px -12px rgba(16,35,30,.35);
  --shadow-md:0 2px 4px rgba(16,35,30,.04), 0 22px 45px -30px rgba(16,35,30,.5);
  --shadow-lg:0 40px 80px -50px rgba(10,58,48,.65);
  --r-sm:10px; --r-md:16px; --r-lg:22px; --r-xl:30px;
  --sans:"Manrope","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --serif:"Fraunces","Noto Serif SC",Georgia,"Songti SC",serif;
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html[data-lang="zh"] body{letter-spacing:.005em}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:var(--brand);color:#fff}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:24px}

/* no-js safety: the domain grid and social list are rendered by app.js */
.no-js .grid,.no-js .socials{display:none}

/* ambient background */
.aura{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.aura::before,.aura::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}
.aura::before{width:60vw;height:60vw;top:-24vw;right:-14vw;background:radial-gradient(circle at 40% 40%,rgba(14,124,102,.28),transparent 62%)}
.aura::after{width:52vw;height:52vw;bottom:-26vw;left:-16vw;background:radial-gradient(circle at 60% 40%,rgba(184,135,59,.22),transparent 64%)}
.grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(16,35,30,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(16,35,30,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.65,.3,1),transform .7s cubic-bezier(.22,.65,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:color-mix(in srgb,var(--paper) 78%,transparent);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.site-header.stuck{border-bottom-color:var(--line);box-shadow:0 12px 30px -26px rgba(16,35,30,.55)}
.header-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:-.02em}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;flex:none;
  background:linear-gradient(145deg,var(--brand),var(--brand-deep));box-shadow:var(--shadow-sm)}
.brand-mark svg{width:19px;height:19px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:-.01em}
.brand-text span{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}

.lang-switch{position:relative;display:flex;padding:3px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.7)}
.lang-switch button{position:relative;z-index:1;padding:6px 13px;border-radius:999px;font-size:13px;font-weight:700;color:var(--muted);transition:color .25s}
.lang-switch button[aria-pressed="true"]{color:#fff}
.lang-thumb{position:absolute;top:3px;left:3px;height:calc(100% - 6px);border-radius:999px;
  background:linear-gradient(145deg,var(--brand),var(--brand-deep));transition:transform .32s cubic-bezier(.22,.9,.28,1),width .32s}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border-radius:999px;
  font-weight:700;font-size:14.5px;letter-spacing:-.005em;transition:transform .2s,box-shadow .25s,background .25s,color .25s;white-space:nowrap}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{background:linear-gradient(145deg,var(--brand),var(--brand-deep));color:#fff;box-shadow:0 12px 26px -14px rgba(10,92,76,.85)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(10,92,76,.9)}
.btn-sm{padding:9px 15px;font-size:13.5px}

/* ---------- hero ---------- */
.hero{padding:76px 0 56px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.72);font-size:12.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--brand-deep)}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--brand-tint);flex:none}
h1{font-family:var(--serif);font-size:clamp(2.4rem,5.4vw,3.9rem);line-height:1.05;font-weight:600;letter-spacing:-.025em;margin:22px 0 0;max-width:24ch}
h1 .accent{font-style:italic;background:linear-gradient(120deg,var(--brand) 10%,var(--gold) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:22px 0 0;font-size:17.5px;color:var(--ink-soft);max-width:53ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 34px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-meta span{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.hero-meta svg{width:15px;height:15px;color:var(--brand);flex:none}

/* ---------- portfolio ---------- */
.section{padding:24px 0 88px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:34px}
.section-head h2{font-family:var(--serif);font-size:clamp(1.85rem,3.4vw,2.6rem);font-weight:600;letter-spacing:-.022em;line-height:1.12;margin:0;max-width:24ch}
.section-head .count{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);padding-bottom:6px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.card{position:relative;display:flex;flex-direction:column;gap:22px;padding:28px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .3s cubic-bezier(.22,.9,.28,1),box-shadow .35s,border-color .3s}
.card::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,var(--brand),var(--gold));opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card:hover::before{opacity:1}
.card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.card-name{font-family:var(--serif);font-size:26px;font-weight:600;letter-spacing:-.025em;line-height:1.15;word-break:break-word;margin:0}
.card-name .tld{color:var(--brand);font-style:italic}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:11px;font-weight:800;
  letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;border:1px solid transparent}
.badge-premium{background:var(--gold-tint);color:#7A5716;border-color:rgba(184,135,59,.35)}
.badge-hot{background:rgba(214,69,45,.1);color:#B23A22;border-color:rgba(214,69,45,.3)}
.badge-new{background:var(--brand-tint);color:var(--brand-deep);border-color:rgba(14,124,102,.3)}
.card-buy{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:18px;border-top:1px dashed var(--line);margin-top:auto}
.price{font-family:var(--serif);font-size:26px;font-weight:600;letter-spacing:-.02em;color:var(--brand-deep);line-height:1.15}
.card-actions{display:flex;gap:8px}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
  color:var(--ink-soft);transition:.22s;flex:none}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-tint)}
.icon-btn svg{width:16px;height:16px}
.icon-btn.done{border-color:var(--brand);background:var(--brand-tint);color:var(--brand-deep)}

/* ---------- contact ---------- */
.contact{padding:0 0 88px}
.contact-card{position:relative;border-radius:var(--r-xl);padding:clamp(32px,5vw,58px);color:#EAF6F2;overflow:hidden;
  background:linear-gradient(150deg,#0D2A23 0%,#0A5145 52%,#0E7C66 100%);box-shadow:var(--shadow-lg)}
.contact-card::before{content:"";position:absolute;width:520px;height:520px;top:-280px;right:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(184,135,59,.34),transparent 62%)}
.contact-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:46px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;font-size:11.5px;font-weight:800;
  letter-spacing:.12em;text-transform:uppercase;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22)}
.contact-card h2{font-family:var(--serif);font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:600;letter-spacing:-.025em;line-height:1.12;margin:16px 0 0}
.contact-card .lede{color:rgba(234,246,242,.82);margin:16px 0 0;font-size:16.5px;max-width:46ch}
.mail-panel{display:flex;flex-direction:column;gap:14px}
.mail-box{display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(6px)}
.mail-box .mail-ico{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:rgba(255,255,255,.16);flex:none}
.mail-box .mail-ico svg{width:19px;height:19px}
.mail-box .mail-label{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:rgba(234,246,242,.66);font-weight:700}
.mail-box .mail-main{min-width:0}
.mail-box a.mail-address{font-size:clamp(15px,2.4vw,20px);font-weight:700;letter-spacing:-.015em;word-break:break-all}
.mail-box a.mail-address:hover{text-decoration:underline;text-underline-offset:4px}
.mail-box.column{flex-direction:column;align-items:stretch;gap:14px}
.mail-copy{margin-left:auto;color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.24)}
.mail-copy:hover{background:rgba(255,255,255,.26);color:#fff;border-color:rgba(255,255,255,.5)}
.socials{display:flex;flex-wrap:wrap;gap:10px}
.social{display:inline-flex;align-items:center;gap:10px;padding:11px 16px;border-radius:999px;font-size:14px;font-weight:700;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);transition:.24s}
.social svg{width:17px;height:17px;flex:none}
.social:hover{background:#fff;color:var(--brand-deep);border-color:#fff;transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:44px 0 34px;background:rgba(255,255,255,.55)}
.footer-inner{display:flex;flex-wrap:wrap;gap:14px 24px;justify-content:space-between;align-items:center}
.footer-inner p{margin:0;color:var(--ink-soft);font-size:14px}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--ink-soft)}
.footer-links a:hover{color:var(--brand-deep)}
.footer-bottom{margin-top:26px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,120%);z-index:90;padding:13px 22px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;box-shadow:0 22px 40px -20px rgba(16,35,30,.8);
  transition:transform .4s cubic-bezier(.22,.9,.28,1);pointer-events:none;white-space:nowrap}
.toast.show{transform:translate(-50%,0)}

/* ---------- responsive ---------- */
@media (max-width:940px){
  .hero{padding:52px 0 40px}
  .section{padding:16px 0 66px}
  .contact{padding:0 0 66px}
  .contact-inner{grid-template-columns:minmax(0,1fr);gap:34px}
  .section-head{align-items:flex-start}
}
@media (max-width:560px){
  .wrap{padding-inline:18px}
  .header-inner{height:66px}
  .brand-text span{display:none}
  .header-actions{gap:8px}
  .grid{grid-template-columns:minmax(0,1fr)}
  .card{padding:22px}
  .card-name{font-size:23px}
  .price{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}