/* ===================================================================
   金門金沙戰 · 戰地虎魂
   Palette: 戰地夜黑 / 虎焰橙 / 戰功金 / 虎紋米白
=================================================================== */
:root{
  --ink:        #0d0c0b;   /* 戰地夜 */
  --ink-2:      #16130f;
  --ink-3:      #211c16;
  --bone:       #f3ece0;   /* 虎紋米白 */
  --bone-dim:   #cabfae;
  --fire:       #ff5a1f;   /* 虎焰橙 */
  --fire-2:     #ff8a00;
  --gold:       #d4a23a;   /* 戰功金 */
  --gold-soft:  #e7c876;
  --blood:      #7a2410;
  --line:       rgba(243,236,224,.12);
  --maxw:       1180px;
  --serif:      "Noto Sans TC", sans-serif;
  --display:    "Oswald", "Noto Sans TC", sans-serif;
  --stencil:    "Black Ops One", "Oswald", sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{
  font-family:var(--serif);
  background:var(--ink);
  color:var(--bone);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* grain overlay reusable */
.hero__grain,.jersey__grain,.signup__grain{
  position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");
}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:.4em;
  font-family:var(--display);font-weight:600;letter-spacing:.04em;
  padding:.7em 1.5em;border:2px solid var(--fire);color:var(--bone);
  background:transparent;border-radius:2px;cursor:pointer;
  transition:transform .25s,background .25s,color .25s,box-shadow .25s;
  position:relative;
}
.btn:hover{background:var(--fire);color:#fff;transform:translateY(-2px);box-shadow:0 10px 30px -8px rgba(255,90,31,.6)}
.btn--sm{padding:.45em 1.05em;font-size:.85rem}
.btn--lg{padding:.9em 2em;font-size:1.05rem}
.btn--ghost{border-color:var(--line);color:var(--bone-dim)}
.btn--ghost:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn--fire{
  background:linear-gradient(100deg,var(--fire),var(--fire-2));border-color:var(--fire-2);color:#1a0e00;font-weight:700;
  box-shadow:0 0 0 0 rgba(255,138,0,.5);animation:pulse 2.6s infinite;
}
.btn--fire:hover{color:#1a0e00;transform:translateY(-3px) scale(1.02)}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,138,0,.45)}70%{box-shadow:0 0 0 18px rgba(255,138,0,0)}100%{box-shadow:0 0 0 0 rgba(255,138,0,0)}}

/* ===== NAV ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;gap:1.5rem;
  padding:.85rem clamp(1rem,4vw,2.5rem);
  background:rgba(13,12,11,0);backdrop-filter:blur(0);
  transition:background .3s,backdrop-filter .3s,border-color .3s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{background:rgba(13,12,11,.82);backdrop-filter:blur(10px);border-color:var(--line)}
.nav__brand{font-family:var(--stencil);font-size:1.25rem;letter-spacing:.05em;color:var(--bone)}
.nav__brand span{color:var(--fire);font-size:.7em}
.nav__links{display:flex;gap:1.4rem;margin-left:auto;font-size:.92rem;font-weight:500}
.nav__links a{color:var(--bone-dim);transition:color .2s;position:relative}
.nav__links a:hover{color:var(--bone)}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--fire);transition:width .25s}
.nav__links a:hover::after{width:100%}
.nav .btn{flex:none}
.nav__cta{display:flex;gap:.55rem}

/* ===== HERO ===== */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:7rem clamp(1.25rem,6vw,5rem) 4rem;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 78% 18%, rgba(255,90,31,.20), transparent 60%),
    radial-gradient(900px 700px at 12% 90%, rgba(122,36,16,.35), transparent 55%),
    linear-gradient(160deg,#1a1510 0%,#0d0c0b 55%,#07060a 100%);
}
.hero__claw{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none}
.hero__claw--1{width:520px;height:520px;background:radial-gradient(circle,var(--fire),transparent 70%);top:-120px;right:-100px;animation:float 9s ease-in-out infinite}
.hero__claw--2{width:380px;height:380px;background:radial-gradient(circle,var(--blood),transparent 70%);bottom:-120px;left:-80px;animation:float 11s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-26px)}}
.hero__inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;width:100%}
.hero__kicker{font-family:var(--display);letter-spacing:.32em;text-transform:uppercase;font-size:.82rem;color:var(--gold);margin-bottom:1.4rem}
.hero__title{display:flex;flex-direction:column;line-height:1;font-weight:900}
.hero__line1{font-size:clamp(1.4rem,4vw,2.4rem);color:var(--bone)}
.hero__line2{font-size:clamp(1.7rem,5vw,3rem);color:var(--bone)}
.hero__big{
  font-size:clamp(5rem,20vw,13rem);font-weight:900;line-height:.92;letter-spacing:.02em;margin-top:.1em;
  background:linear-gradient(180deg,#fff 0%,var(--gold-soft) 38%,var(--fire) 78%,var(--blood) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 14px 30px rgba(255,90,31,.35));
}
.hero__slogan{margin-top:1.2rem;font-size:clamp(1rem,2.4vw,1.4rem);letter-spacing:.18em;color:var(--bone);font-weight:500}
.hero__meta{list-style:none;display:flex;flex-wrap:wrap;gap:clamp(1.2rem,4vw,3rem);margin:2.2rem 0 2.6rem}
.hero__meta li{display:flex;flex-direction:column;border-left:3px solid var(--fire);padding-left:.9rem}
.hero__meta b{font-family:var(--display);font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700;line-height:1;color:var(--bone)}
.hero__meta span{font-size:.8rem;letter-spacing:.12em;color:var(--bone-dim);margin-top:.3rem}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero__scroll{position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);font-family:var(--display);font-size:.75rem;letter-spacing:.3em;color:var(--bone-dim);animation:bob 2s infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0);opacity:.5}50%{transform:translate(-50%,8px);opacity:1}}

/* ===== section title ===== */
.sec-title{
  font-weight:900;font-size:clamp(1.7rem,4.5vw,2.8rem);text-align:center;
  margin:0 auto 2.6rem;position:relative;padding-top:2.2rem;color:var(--ink);
}
.sec-title--light{color:var(--bone)}
.sec-title__en{
  display:block;font-family:var(--stencil);font-size:.78rem;letter-spacing:.36em;
  color:var(--fire);margin-bottom:.7rem;
}
.sec-title::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:54px;height:4px;background:linear-gradient(90deg,var(--fire),var(--gold))}

section{padding:clamp(3.5rem,8vw,6.5rem) clamp(1.25rem,5vw,3rem)}

/* ===== INFO ===== */
.info{background:var(--bone);color:var(--ink)}
.info__grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:1px;background:rgba(13,12,11,.12);border:1px solid rgba(13,12,11,.12)}
.card{background:var(--bone);padding:2rem 1.4rem;position:relative;transition:background .3s,color .3s}
.card:hover{background:var(--ink);color:var(--bone)}
.card__no{font-family:var(--stencil);font-size:.8rem;color:var(--fire);letter-spacing:.1em}
.card h3{font-size:1rem;margin:.7rem 0 .5rem;letter-spacing:.06em}
.card p{font-family:var(--display);font-size:1.5rem;font-weight:600;line-height:1.2}
.card p em{font-style:normal;font-size:.95rem;font-family:var(--serif);color:var(--fire);font-weight:500}
.card:hover p em{color:var(--gold-soft)}
.info__gift{max-width:var(--maxw);margin:1.6rem auto 0;text-align:center;font-size:1.05rem;letter-spacing:.08em;color:var(--ink)}
.info__gift-label{display:inline-block;background:var(--fire);color:#fff;font-weight:700;padding:.2em .8em;border-radius:2px;margin-right:.7em;font-size:.9rem}

/* ===== ROUTE ===== */
.route{background:var(--ink-2);position:relative}
.route__wrap{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(1.5rem,4vw,3rem);align-items:center}
.route__img{border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:0 30px 60px -30px #000}
.route__img img{width:100%}
.route__dist{font-family:var(--display);line-height:.9;color:var(--fire);font-weight:700}
.route__dist b{font-size:clamp(3.5rem,9vw,5.5rem)}
.route__from{font-size:1.15rem;font-weight:700;letter-spacing:.06em;margin:.4rem 0 1.4rem;color:var(--bone)}
.route__steps{list-style:none;counter-reset:r}
.route__steps li{counter-increment:r;position:relative;padding:.55rem 0 .55rem 2.6rem;border-bottom:1px dashed var(--line);color:var(--bone-dim)}
.route__steps li::before{content:counter(r);position:absolute;left:0;top:.5rem;width:1.7rem;height:1.7rem;display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:.85rem;color:var(--ink);background:var(--gold);border-radius:50%}
.route__note{margin-top:1.4rem;font-size:.9rem;color:var(--gold-soft);letter-spacing:.05em}

/* ===== PRIZE ===== */
.prize{background:var(--bone);color:var(--ink)}
.prize__grid{max-width:980px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.prize__col{background:#fff;border:1px solid rgba(13,12,11,.1);border-radius:6px;overflow:hidden;box-shadow:0 20px 40px -28px rgba(13,12,11,.4)}
.prize__head{padding:1.6rem;color:#fff;position:relative;overflow:hidden}
.prize__head--m{background:linear-gradient(120deg,var(--ink),var(--blood))}
.prize__head--w{background:linear-gradient(120deg,var(--blood),var(--fire))}
.prize__tag{display:inline-block;font-family:var(--display);font-size:.72rem;letter-spacing:.2em;border:1px solid rgba(255,255,255,.5);padding:.15em .7em;border-radius:2px;margin-bottom:.6rem}
.prize__head h3{font-size:1.8rem;font-weight:900}
.prize__head p{font-size:.85rem;opacity:.9;margin-top:.3rem}
.prize__list{list-style:none;padding:.6rem 1.2rem 1.2rem}
.prize__list li{display:grid;grid-template-columns:2rem 2rem 1fr;align-items:center;gap:.6rem;padding:.6rem 0;border-bottom:1px solid rgba(13,12,11,.08)}
.prize__list li:last-child{border-bottom:none}
.prize__list .rank{font-family:var(--stencil);font-size:1rem;color:var(--fire);text-align:center}
.prize__list .medal{font-size:1.2rem;text-align:center}
.prize__list b{font-family:var(--display);font-weight:700;font-size:1.3rem;text-align:right}

/* ===== JERSEY ===== */
.jersey{background:linear-gradient(165deg,#1c160f,#0d0c0b);position:relative;overflow:hidden}
.jersey__wrap{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:start;position:relative;z-index:2}
.jersey__img{background:linear-gradient(160deg,#fff,#efe9dc);border-radius:8px;padding:1.5rem;border:1px solid var(--gold);box-shadow:0 0 60px -20px rgba(255,90,31,.5)}
.jersey__img img{width:100%}
.jersey__img figcaption{text-align:center;margin-top:.8rem;font-family:var(--display);font-size:.8rem;letter-spacing:.1em;color:var(--ink)}
.jersey__price{display:flex;align-items:baseline;gap:.5rem;font-family:var(--display);margin-bottom:1rem}
.jersey__price span{font-size:.8rem;letter-spacing:.2em;background:var(--fire);color:#fff;padding:.2em .7em;border-radius:2px;font-weight:600}
.jersey__price b{font-size:clamp(2.2rem,6vw,3.2rem);color:var(--gold-soft);font-weight:700}
.jersey__price em{font-style:normal;color:var(--bone-dim);font-size:1rem}
.jersey__story{color:var(--bone-dim);margin-bottom:1.2rem}
.jersey__story strong{color:var(--fire)}
.jersey__points{list-style:none;margin-bottom:1.6rem}
.jersey__points li{padding:.35rem 0;border-bottom:1px solid var(--line);color:var(--bone)}
.jersey__size{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:6px;padding:1.2rem}
.jersey__size h4{font-size:.95rem;letter-spacing:.05em;margin-bottom:.8rem;color:var(--gold-soft)}
.jersey__size h4 em{font-style:normal;font-size:.75rem;color:var(--bone-dim);font-weight:400}
.jersey__size table{width:100%;border-collapse:collapse;font-family:var(--display);font-size:.95rem}
.jersey__size th{background:var(--ink-3);color:var(--gold-soft);padding:.5rem;letter-spacing:.1em;font-weight:600}
.jersey__size td{padding:.45rem .5rem;text-align:center;border-bottom:1px solid var(--line);color:var(--bone)}
.jersey__size tr:hover td{background:rgba(255,90,31,.08)}
.jersey__size-note{font-size:.75rem;color:var(--bone-dim);margin-top:.7rem;line-height:1.5}
.jersey__tags{margin-top:1.2rem;font-size:.8rem;color:var(--fire);letter-spacing:.04em;word-spacing:.2em}

/* ===== GEAR ===== */
.gear{background:var(--bone);color:var(--ink)}
.gear__grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem}
.gear__item{display:flex;gap:1rem;background:#fff;border:1px solid rgba(13,12,11,.1);border-left:4px solid var(--fire);border-radius:4px;padding:1.2rem 1.3rem;transition:transform .2s,box-shadow .2s}
.gear__item:hover{transform:translateY(-3px);box-shadow:0 16px 30px -18px rgba(13,12,11,.45)}
.gear__item span{font-family:var(--stencil);font-size:1.3rem;color:var(--fire);line-height:1}
.gear__item p{font-size:.95rem}
.gear__item strong{color:var(--blood)}

/* ===== RULES ===== */
.rules{background:var(--ink-2)}
.rules__acc{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:.8rem}
.acc{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.acc summary{cursor:pointer;list-style:none;padding:1.1rem 1.4rem;font-weight:700;font-size:1.05rem;display:flex;align-items:center;justify-content:space-between;color:var(--bone);transition:color .2s}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";font-family:var(--display);font-size:1.5rem;color:var(--fire);transition:transform .3s}
.acc[open] summary::after{transform:rotate(45deg)}
.acc summary:hover{color:var(--gold-soft)}
.acc ol{padding:.4rem 1.4rem 1.4rem 2.8rem;color:var(--bone-dim)}
.acc ol li{padding:.4rem 0;border-bottom:1px solid var(--line)}
.acc ol li:last-child{border-bottom:none}
.acc ol li strong{color:var(--fire)}

/* ===== SIGNUP ===== */
.signup{position:relative;text-align:center;overflow:hidden;
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(255,90,31,.35),transparent 60%),
    linear-gradient(180deg,#1a0f06,#0d0c0b);
}
.signup__inner{position:relative;z-index:2;max-width:760px;margin:0 auto}
.signup__kicker{font-family:var(--display);letter-spacing:.25em;color:var(--gold-soft);font-size:.9rem;margin-bottom:1rem}
.signup__title{font-size:clamp(2rem,6vw,3.4rem);font-weight:900;line-height:1.2;color:var(--bone)}
.signup__sub{margin:1.2rem 0 2rem;color:var(--bone-dim);letter-spacing:.06em}
.signup__hint{margin-top:1.1rem;font-size:.75rem;color:var(--bone-dim)}

/* ===== FOOTER ===== */
.foot{background:#07060a;padding:3rem clamp(1.25rem,5vw,3rem);text-align:center;border-top:1px solid var(--line)}
.foot__org{display:flex;flex-wrap:wrap;justify-content:center;gap:1.4rem 2.5rem;margin-bottom:1.8rem}
.foot__org p{font-size:.95rem;color:var(--bone)}
.foot__org span{display:block;font-size:.72rem;letter-spacing:.2em;color:var(--fire);margin-bottom:.2rem;font-family:var(--display)}
.foot__mark{font-family:var(--stencil);letter-spacing:.2em;color:var(--bone-dim);font-size:1rem}
.foot__copy{margin-top:.6rem;font-size:.82rem;color:var(--bone-dim)}

/* ===== reveal anim ===== */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
[data-reveal].is-in{opacity:1;transform:none}

/* ===== responsive ===== */
@media(max-width:860px){
  .nav__links{display:none}
  .route__wrap,.jersey__wrap{grid-template-columns:1fr}
  .prize__grid{grid-template-columns:1fr}
  .jersey__img{max-width:480px;margin:0 auto}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}