/*
Theme Name: Star Island 星屿
Theme URI: https://example.com/star-island
Author: Star Island
Description: A dreamy, editable WordPress theme for the Star Island (星屿) mood diary / tree-hole app. Includes Home, Support, Privacy, Terms and Download starter pages.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GPL-2.0-or-later
Text Domain: star-island
*/

:root{
  --si-bg:#071524;
  --si-bg-2:#0c2136;
  --si-card:rgba(11,28,46,.78);
  --si-card-solid:#10283f;
  --si-text:#f7f0df;
  --si-muted:#c2c9d0;
  --si-accent:#f3dfb0;
  --si-line:rgba(255,255,255,.12);
  --si-radius:28px;
  --si-shadow:0 24px 80px rgba(0,0,0,.35);
  --si-max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--si-bg);color:var(--si-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;z-index:-3;background:
radial-gradient(circle at 15% 18%,rgba(255,255,255,.9) 0 1px,transparent 1.7px),
radial-gradient(circle at 72% 22%,rgba(255,255,255,.7) 0 1px,transparent 1.5px),
radial-gradient(circle at 34% 65%,rgba(255,255,255,.55) 0 1px,transparent 1.5px),
radial-gradient(circle at 86% 74%,rgba(255,255,255,.7) 0 1px,transparent 1.5px),
radial-gradient(ellipse at top,#10283f 0%,#071524 48%,#04101c 100%);background-size:190px 190px,260px 260px,230px 230px,320px 320px,100% 100%}
body:after{content:"";position:fixed;inset:auto -10vw -22vh -10vw;height:55vh;z-index:-2;background:radial-gradient(ellipse at center,rgba(190,203,218,.23),transparent 65%);filter:blur(24px)}
a{color:var(--si-accent);text-decoration:none}a:hover{opacity:.82}
img{max-width:100%;height:auto}
.si-wrap{width:min(var(--si-max),calc(100% - 40px));margin:0 auto}
.si-header{position:sticky;top:0;z-index:30;background:rgba(7,21,36,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--si-line)}
.si-nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.si-brand{display:flex;align-items:center;gap:12px;color:var(--si-text);font-weight:650;letter-spacing:.08em}.si-brand-mark{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(255,255,255,.22);box-shadow:inset -8px -4px 14px rgba(0,0,0,.25);font-size:18px}.si-brand small{display:block;color:var(--si-muted);font-size:10px;letter-spacing:.25em;font-weight:500}
.si-menu{display:flex;align-items:center;gap:26px;list-style:none;padding:0;margin:0}.si-menu a{color:var(--si-muted);font-size:14px}.si-menu .current-menu-item>a,.si-menu a:hover{color:var(--si-text)}
.si-download-nav{display:inline-flex!important;align-items:center;justify-content:center;padding:10px 18px;border-radius:999px;background:var(--si-text);color:#0b1a28!important;font-weight:650}
.si-mobile-toggle{display:none;background:none;border:0;color:var(--si-text);font-size:26px}
.si-hero{padding:96px 0 76px;position:relative}.si-hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:68px;align-items:center}.si-eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--si-accent);margin-bottom:18px}.si-hero h1{font-family:Georgia,"Songti SC","STSong",serif;font-weight:500;letter-spacing:.04em;font-size:clamp(48px,7vw,90px);line-height:1.08;margin:0 0 22px}.si-hero p{font-size:clamp(17px,2.2vw,22px);color:var(--si-muted);max-width:650px;margin:0 0 34px}.si-actions{display:flex;flex-wrap:wrap;gap:14px}.si-btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:999px;border:1px solid var(--si-line);font-weight:650}.si-btn-primary{background:var(--si-text);color:#0a1724;border-color:transparent}.si-btn-secondary{color:var(--si-text);background:rgba(255,255,255,.04)}
.si-orbit{position:relative}.si-orbit:before{content:"";position:absolute;width:58%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 38% 32%,#f4f0da 0 8%,#a5b5bd 26%,#566d78 55%,#314b5e 72%,transparent 73%);right:-12%;top:-10%;opacity:.20;filter:blur(.2px)}
.si-device-frame{position:relative;padding:14px;border:1px solid rgba(255,255,255,.14);border-radius:34px;background:rgba(255,255,255,.035);box-shadow:var(--si-shadow);transform:rotate(1deg)}.si-device-frame img{display:block;border-radius:24px}.si-device-note{position:absolute;right:-16px;bottom:28px;background:rgba(9,24,40,.88);border:1px solid var(--si-line);padding:14px 18px;border-radius:16px;font-family:Georgia,"Songti SC",serif;color:var(--si-accent);box-shadow:0 16px 40px rgba(0,0,0,.28)}
.si-section{padding:82px 0}.si-section-head{max-width:760px;margin-bottom:40px}.si-section h2{font-family:Georgia,"Songti SC","STSong",serif;font-size:clamp(34px,5vw,58px);font-weight:500;line-height:1.18;margin:0 0 14px}.si-section-head p{color:var(--si-muted);font-size:18px;margin:0}.si-feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.si-feature{min-height:260px;padding:28px;border-radius:var(--si-radius);border:1px solid var(--si-line);background:linear-gradient(180deg,rgba(18,44,69,.78),rgba(8,24,40,.82));box-shadow:0 18px 48px rgba(0,0,0,.16)}.si-feature-icon{font-size:30px;margin-bottom:46px}.si-feature h3{margin:0 0 10px;font-size:20px}.si-feature p{color:var(--si-muted);font-size:14px;margin:0}.si-quote{padding:52px;border-radius:36px;background:linear-gradient(135deg,rgba(240,224,188,.95),rgba(216,223,219,.92));color:#173047;display:grid;grid-template-columns:1fr auto;align-items:end;gap:30px}.si-quote blockquote{font-family:Georgia,"Songti SC",serif;font-size:clamp(28px,4.5vw,52px);line-height:1.35;margin:0}.si-quote span{letter-spacing:.18em;text-transform:uppercase;font-size:11px;opacity:.65}
.si-page-hero{padding:86px 0 44px}.si-page-hero h1{font-family:Georgia,"Songti SC",serif;font-weight:500;font-size:clamp(44px,6vw,72px);margin:0 0 14px}.si-page-hero p{color:var(--si-muted);font-size:18px;max-width:760px}.si-content{padding:18px 0 90px}.si-content-card{background:rgba(8,24,40,.76);border:1px solid var(--si-line);border-radius:28px;padding:clamp(24px,5vw,56px);box-shadow:0 24px 60px rgba(0,0,0,.2)}.si-content-card h2,.si-content-card h3{font-family:Georgia,"Songti SC",serif;font-weight:500}.si-content-card h2{font-size:32px;margin-top:44px}.si-content-card h2:first-child{margin-top:0}.si-content-card p,.si-content-card li{color:#d7dce0}.si-content-card hr{border:0;border-top:1px solid var(--si-line);margin:32px 0}
.si-support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}.si-support-box{padding:24px;border-radius:20px;border:1px solid var(--si-line);background:rgba(255,255,255,.025)}
.si-download-card{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;padding:48px;border-radius:34px;background:linear-gradient(135deg,rgba(19,50,78,.95),rgba(7,21,36,.92));border:1px solid var(--si-line);box-shadow:var(--si-shadow)}.si-download-card h2{font-size:clamp(32px,5vw,56px);margin:0 0 12px}.si-download-card p{color:var(--si-muted);margin:0}.si-download-icon{width:110px;aspect-ratio:1;border-radius:30px;background:radial-gradient(circle at 48% 40%,#fff3c3 0 5%,#d3ba65 6% 8%,transparent 9%),linear-gradient(180deg,#173d5b,#0b2237);display:grid;place-items:center;font-size:42px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.16)}
.si-footer{border-top:1px solid var(--si-line);padding:44px 0 50px;color:var(--si-muted)}.si-footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}.si-footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:18px}.si-footer small{display:block;margin-top:10px;color:#8896a2}
@media (max-width:920px){.si-menu{display:none;position:absolute;left:20px;right:20px;top:68px;flex-direction:column;align-items:stretch;background:#0a1d2f;border:1px solid var(--si-line);border-radius:20px;padding:18px;box-shadow:var(--si-shadow)}.si-menu.is-open{display:flex}.si-mobile-toggle{display:block}.si-hero-grid{grid-template-columns:1fr;gap:42px}.si-feature-grid{grid-template-columns:repeat(2,1fr)}.si-support-grid{grid-template-columns:1fr}.si-download-card{grid-template-columns:1fr}.si-download-icon{display:none}.si-footer-grid{grid-template-columns:1fr}.si-footer-links{justify-content:flex-start}}
@media (max-width:600px){.si-wrap{width:min(100% - 28px,var(--si-max))}.si-hero{padding-top:64px}.si-feature-grid{grid-template-columns:1fr}.si-feature{min-height:auto}.si-quote{padding:30px;grid-template-columns:1fr}.si-device-note{right:8px}.si-nav{min-height:66px}.si-brand small{display:none}}