@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;700&display=swap');

:root{
  --mint:#87ff71;
  --cyan:#01cdfe;
  --ink:#192617;
  --text:#e9f7ee;
  --dim:#a2bcab;
  --line:rgba(135,255,113,.24);
  --glass:rgba(20,33,24,.56);
  --r:18px;
}

*,*::before,*::after{box-sizing:border-box}

html{
  font-size:17px;
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  font-family:'Noto Sans Thai','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:1rem;
  line-height:1.7;
  color:var(--text);
  background:
    radial-gradient(120% 55% at 50% -8%, rgba(135,255,113,.22), transparent 62%),
    radial-gradient(95% 55% at 92% 6%, rgba(1,205,254,.18), transparent 66%),
    radial-gradient(80% 50% at 4% 92%, rgba(185,103,255,.14), transparent 70%),
    linear-gradient(180deg,#0b1511 0%,#0a110d 42%,#0e1a13 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(1,205,254,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1,205,254,.10) 1px, transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 88%);
  mask-image:radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 88%);
  opacity:.7;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:40;
  pointer-events:none;
  background:repeating-linear-gradient(180deg, rgba(5,12,8,.30) 0 1px, transparent 1px 3px);
  opacity:.42;
}

.shell{position:relative;z-index:1}

/* ---------- 顶栏 ---------- */

.topbar{
  position:sticky;
  top:0;
  z-index:30;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px clamp(14px,4vw,44px);
  background:rgba(9,17,13,.76);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  text-decoration:none;
  color:var(--text);
  font-weight:700;
  letter-spacing:.02em;
  text-shadow:0 0 18px rgba(135,255,113,.55);
}

.brand-logo{
  display:block;
  height:26px;
  width:auto;
  max-width:130px;
  object-fit:contain;
}

.top-contact{
  display:inline-flex;
  align-items:center;
  margin-left:auto;
  min-height:44px;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(135,255,113,.08);
  color:var(--text);
  font-size:.95rem;
  text-decoration:none;
  transition:background .2s ease, box-shadow .2s ease, transform .2s ease;
}

.top-contact:hover,
.top-contact:focus-visible{
  background:rgba(135,255,113,.2);
  box-shadow:0 0 20px -4px rgba(135,255,113,.8);
  transform:translateY(-1px);
}

.menu-btn{
  display:inline-flex;
  align-items:center;
  margin-left:8px;
  min-height:44px;
  padding:10px 20px;
  border-radius:999px;
  border:1px solid rgba(1,205,254,.55);
  background:linear-gradient(120deg, rgba(135,255,113,.22), rgba(1,205,254,.26));
  color:#eafff2;
  font:inherit;
  font-size:.95rem;
  letter-spacing:.06em;
  cursor:pointer;
  box-shadow:0 0 22px -8px rgba(1,205,254,.9);
  transition:box-shadow .2s ease, transform .2s ease;
}

.topbar .brand + .menu-btn{margin-left:auto}

.menu-btn:hover,
.menu-btn:focus-visible{
  box-shadow:0 0 26px -3px rgba(1,205,254,.95);
  transform:translateY(-1px);
}

/* ---------- 全屏菜单 ---------- */

.drawer{
  position:fixed;
  inset:0;
  z-index:35;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:88px 20px 40px;
  background:
    radial-gradient(circle at 50% 16%, rgba(1,205,254,.22), transparent 62%),
    radial-gradient(circle at 50% 92%, rgba(135,255,113,.16), transparent 60%),
    rgba(6,13,9,.95);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  opacity:0;
  visibility:hidden;
  transition:opacity .26s ease, visibility .26s ease;
}

.drawer.is-open{opacity:1;visibility:visible}

.drawer-nav{
  display:grid;
  gap:8px;
  width:min(540px,100%);
}

.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:54px;
  padding:12px 18px;
  border-radius:14px;
  border:1px solid rgba(135,255,113,.18);
  background:rgba(255,255,255,.035);
  color:var(--text);
  font-size:1.05rem;
  text-decoration:none;
  transition:border-color .2s ease, background .2s ease, transform .2s ease;
}

.drawer-nav a::after{
  content:"→";
  color:var(--cyan);
  font-size:.95rem;
  opacity:.7;
}

.drawer-nav a:hover,
.drawer-nav a:focus-visible{
  border-color:var(--mint);
  background:rgba(135,255,113,.1);
  transform:translateX(3px);
}

.drawer-contact{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid rgba(1,205,254,.5);
  color:var(--cyan);
  font-size:.95rem;
  text-decoration:none;
}

/* ---------- 首屏 ---------- */

.hero{
  position:relative;
  isolation:isolate;
  display:flex;
  align-items:center;
  min-height:70vh;
  padding:clamp(88px,14vh,150px) clamp(16px,5vw,60px) clamp(46px,8vh,90px);
  overflow:hidden;
  border-bottom:1px solid rgba(1,205,254,.2);
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-3;
  background:
    linear-gradient(180deg, rgba(135,255,113,.14), transparent 46%),
    linear-gradient(96deg, rgba(1,205,254,.18), transparent 70%);
}

.hero-fig{
  position:absolute;
  inset:0;
  z-index:-2;
  margin:0;
  overflow:hidden;
}

.hero-fig img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.55;
  filter:hue-rotate(310deg) saturate(1.25) contrast(1.05);
}

.hero-fig::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg, rgba(9,17,13,.95) 14%, rgba(9,17,13,.62) 56%, rgba(1,205,254,.2) 100%),
    linear-gradient(180deg, transparent 52%, #0a110d 100%);
}

.hero-num{
  position:absolute;
  right:clamp(-10px,1vw,26px);
  bottom:-3vh;
  z-index:-1;
  font-size:clamp(170px,30vw,340px);
  font-weight:700;
  line-height:.78;
  letter-spacing:-.05em;
  background:linear-gradient(180deg, rgba(135,255,113,.55), rgba(1,205,254,.06));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-user-select:none;
  user-select:none;
}

.hero-copy{
  position:relative;
  max-width:620px;
  text-align:left;
}

.hero-brand{
  margin:0 0 10px;
  font-size:.95rem;
  letter-spacing:.36em;
  color:var(--mint);
  text-shadow:0 0 14px rgba(135,255,113,.8);
}

.hero h1{
  margin:0;
  font-size:clamp(30px,6.4vw,58px);
  line-height:1.14;
  letter-spacing:-.02em;
  color:#f4fff7;
  text-shadow:0 0 26px rgba(1,205,254,.65), 3px 0 0 rgba(185,103,255,.45), -3px 0 0 rgba(135,255,113,.35);
}

hr{
  border:0;
  height:1px;
  margin:16px 0 20px;
  background:linear-gradient(90deg, var(--mint), rgba(1,205,254,.45) 48%, transparent);
}

.hero-rule{width:130px;margin:20px 0 18px}

.hero-desc{
  margin:0;
  max-width:38ch;
  color:#cfe4d6;
  font-size:1rem;
}

/* ---------- 正文区 ---------- */

.zone{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) 288px;
  align-items:start;
  gap:clamp(20px,3vw,38px);
  max-width:1180px;
  margin:0 auto;
  padding:clamp(28px,5vw,58px) clamp(16px,4vw,36px) 0;
}

.prose{
  min-width:0;
  padding:clamp(18px,3vw,34px);
  border:1px solid var(--line);
  border-radius:var(--r);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:0 24px 60px -40px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.07);
}

.prose > section{
  padding:28px 0;
  border-top:1px solid rgba(135,255,113,.12);
  scroll-margin-top:96px;
}

.prose > section:first-child{border-top:0;padding-top:0}

.prose h2,
.prose h3{
  margin:26px 0 10px;
  line-height:1.3;
  letter-spacing:-.01em;
  color:#f6fff8;
  text-shadow:0 0 18px rgba(135,255,113,.5);
}

.prose h2{font-size:clamp(22px,3.2vw,30px)}
.prose h3{font-size:clamp(18px,2.4vw,22px);color:var(--mint)}
.prose > section > h2:first-child,
.prose > section > h3:first-child{margin-top:0}

.prose p{margin:0 0 14px;color:#d8ecdd}
.prose ul,
.prose ol{margin:0 0 16px;padding-left:1.3em}
.prose li{margin:.35em 0}
.prose a{color:var(--cyan);text-underline-offset:3px}
.prose a:hover{color:var(--mint)}
.prose img{max-width:100%;height:auto;border-radius:14px;border:1px solid rgba(1,205,254,.3)}
.prose blockquote{
  margin:0 0 16px;
  padding:10px 16px;
  border-left:2px solid var(--mint);
  background:rgba(135,255,113,.07);
  border-radius:0 12px 12px 0;
}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.95em;
  background:rgba(1,205,254,.14);
  border-radius:6px;
  padding:1px 6px;
}

/* ---------- 右侧栏 ---------- */

.side{
  position:sticky;
  top:92px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:0 24px 60px -46px rgba(0,0,0,.95);
}

.side h2{
  margin:0 0 6px;
  font-size:.95rem;
  letter-spacing:.28em;
  color:var(--mint);
  text-shadow:0 0 14px rgba(135,255,113,.7);
}

.side hr{margin:10px 0 12px}

.side ol{
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:s;
}

.side li{counter-increment:s}

.side a{
  display:flex;
  align-items:baseline;
  gap:10px;
  min-height:42px;
  padding:8px 2px;
  border-bottom:1px dashed rgba(135,255,113,.16);
  color:var(--text);
  font-size:.95rem;
  text-decoration:none;
  transition:color .18s ease, padding-left .18s ease;
}

.side li:last-child a{border-bottom:0}

.side a::before{
  content:counter(s,decimal-leading-zero);
  color:var(--cyan);
  font-size:.8rem;
  letter-spacing:.06em;
}

.side a:hover,
.side a:focus-visible{color:var(--mint);padding-left:5px}

/* ---------- 页脚 ---------- */

.site-foot{
  position:relative;
  margin-top:clamp(30px,6vw,70px);
  padding:clamp(28px,5vw,58px) clamp(16px,4vw,44px) 22px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(1,205,254,.07), rgba(8,15,11,.94) 46%);
}

.foot-mega{
  max-width:1180px;
  margin:0 auto 20px;
  font-size:clamp(38px,11vw,104px);
  font-weight:700;
  line-height:.94;
  letter-spacing:-.035em;
  background:linear-gradient(92deg, var(--mint), var(--cyan) 58%, #b967ff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  word-break:break-word;
}

.foot-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  max-width:1180px;
  margin:0 auto 26px;
}

.foot-nav dl{
  margin:0;
  padding:14px 16px;
  border:1px solid rgba(135,255,113,.16);
  border-radius:14px;
  background:rgba(255,255,255,.028);
}

.foot-nav dt{
  margin:0 0 6px;
  font-size:1rem;
  letter-spacing:.06em;
}

.foot-nav dd{margin:0}

.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:4px 0;
  color:var(--dim);
  text-decoration:none;
  transition:color .18s ease;
}

.foot-nav a:hover,
.foot-nav a:focus-visible{color:var(--mint)}

.foot-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  max-width:1180px;
  margin:0 auto;
  padding-top:14px;
  border-top:1px solid rgba(135,255,113,.14);
  color:var(--dim);
  font-size:.95rem;
}

.foot-base .copy{margin:0}

.totop{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 18px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--text);
  text-decoration:none;
  transition:border-color .18s ease, box-shadow .18s ease;
}

.totop:hover,
.totop:focus-visible{
  border-color:var(--mint);
  box-shadow:0 0 20px -6px rgba(135,255,113,.85);
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- 自适应 ---------- */

@media (max-width:960px){
  .zone{grid-template-columns:minmax(0,1fr)}
  .side{position:static;order:2}
  .prose{order:1}
}

@media (max-width:640px){
  .top-contact{display:none}
  .topbar .brand{margin-right:auto}
  .hero{min-height:64vh;padding-top:78px}
  .hero-num{font-size:clamp(150px,42vw,240px);opacity:.85}
  .hero h1{font-size:clamp(28px,8.4vw,40px)}
  .foot-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .foot-nav dl:last-child{grid-column:1 / -1}
}

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

button[aria-expanded]{min-width:44px;min-height:44px}