/* ============================================================
   STREAMGATE — landing page (light edition)
   ============================================================ */

/* ---------- backdrop layers ---------- */
#aurora {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: -2;
}
.vignette {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 0%, transparent 52%, rgba(247, 246, 242, 0.82) 100%),
    linear-gradient(180deg, transparent 55%, var(--bg) 100%);
}

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--pad);
  transition: height 0.45s var(--ease-out), background 0.45s, border-color 0.45s, backdrop-filter 0.45s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  height: 58px;
  background: rgba(247, 246, 242, 0.72);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom-color: var(--line);
}
.nav-logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-display); font-size: 17px; font-weight: 600; letter-spacing: 0.06em;
}
.nav-logo em { color: var(--violet); font-weight: 700; }
.nav-links { display: flex; gap: clamp(18px, 3vw, 40px); }
.nav-links a {
  font-size: 13.5px; letter-spacing: 0.08em; color: var(--ink-2);
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1.5px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.45s var(--ease-out);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-side { display: flex; align-items: center; gap: 14px; }
.nav-cta { padding: 9px 20px; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--nav-h) + 3vh) var(--pad) 8vh;
}
.hero-inner { width: 100%; max-width: var(--maxw); margin: 0 auto; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 11.5px; font-weight: 500; letter-spacing: 0.34em;
  color: var(--ink-3);
  margin-bottom: clamp(24px, 4vh, 48px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
}

.hero-title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(64px, 13.5vw, 196px);
  line-height: 0.86;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  user-select: none;
}
.ht-line { display: block; overflow: hidden; padding-bottom: 0.06em; margin-bottom: -0.06em; }
.ht-inner { display: inline-block; will-change: transform; }
.ht-inner .char { display: inline-block; will-change: transform; }
.ht-dot { color: var(--violet); font-style: normal; }

.ht-line--mix { display: flex; align-items: flex-end; gap: clamp(16px, 3vw, 44px); }
.ht-cn {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: clamp(18px, 2.6vw, 34px);
  line-height: 1.25;
  letter-spacing: 0.42em;
  color: var(--ink-3);
  padding-bottom: 0.35em;
  writing-mode: horizontal-tb;
  border-left: 1px solid var(--line-2);
  padding-left: clamp(14px, 2vw, 32px);
  white-space: nowrap;
}

.hero-meta { max-width: 340px; padding-bottom: 1.2em; }
.hero-slogan {
  font-size: clamp(14.5px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--ink-2);
  margin-bottom: 28px;
}
.hero-slogan em {
  color: var(--ink);
  border-bottom: 1px solid rgba(124, 92, 255, 0.7);
  padding-bottom: 1px;
}
.hero-stats { display: flex; gap: clamp(18px, 2.6vw, 36px); border-top: 1px solid var(--line); padding-top: 22px; }
.hero-stats li { display: flex; flex-direction: column; gap: 6px; }
.hero-stats strong {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(20px, 2.2vw, 28px); letter-spacing: -0.01em;
}
.hero-stats .unit { font-size: 0.55em; color: var(--ink-3); margin-left: 2px; }
.hero-stats span {
  font-size: 10px; line-height: 1.5; letter-spacing: 0.18em;
  color: var(--ink-3); text-transform: uppercase;
}

/* ---------- redeem console ---------- */
.redeem-zone { margin-top: clamp(36px, 7vh, 72px); max-width: 720px; }
.redeem {
  position: relative;
  display: flex; align-items: center; gap: 14px;
  padding: 9px 9px 9px 24px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.68));
  border: 1px solid rgba(16, 16, 20, 0.09);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  box-shadow:
    0 34px 80px -28px rgba(60, 50, 120, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  transition: border-color 0.4s, box-shadow 0.4s;
}
.redeem::before {
  /* traveling sheen along the border */
  content: ""; position: absolute; inset: -1px; border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from var(--sheen, 0deg), transparent 0%, rgba(124, 92, 255, 0.9) 8%, rgba(14, 168, 216, 0.9) 14%, transparent 24%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.5s;
  animation: sheen-spin 3.2s linear infinite;
  pointer-events: none;
}
@property --sheen { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
@keyframes sheen-spin { to { --sheen: 360deg; } }
.redeem:hover::before, .redeem:focus-within::before { opacity: 1; }
.redeem:focus-within {
  border-color: rgba(124, 92, 255, 0.55);
  box-shadow:
    0 0 0 5px rgba(124, 92, 255, 0.12),
    0 34px 80px -28px rgba(60, 50, 120, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}
.redeem.shake { animation: shake 0.5s var(--ease-io); }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); } 40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); } 80% { transform: translateX(4px); }
}
.redeem-ticket { flex: none; display: grid; place-items: center; width: 28px; height: 28px; }
.redeem input {
  flex: 1; min-width: 0;
  background: none; border: 0; outline: 0;
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.redeem input::placeholder { color: rgba(16, 16, 20, 0.3); letter-spacing: 0.12em; }
.redeem-btn {
  flex: none;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  color: #fff;
  font-size: 14.5px; font-weight: 600; letter-spacing: 0.06em;
  background: linear-gradient(135deg, var(--violet) 0%, var(--violet-deep) 100%);
  box-shadow: 0 14px 34px -10px rgba(109, 76, 255, 0.62), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: box-shadow 0.4s, transform 0.2s, opacity 0.3s;
}
.redeem-btn:hover { box-shadow: 0 18px 44px -8px rgba(109, 76, 255, 0.78), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.redeem-btn-arrow { transition: transform 0.35s var(--ease-out); }
.redeem-btn:hover .redeem-btn-arrow { transform: translateX(4px); }
.redeem-btn.loading { opacity: 0.65; pointer-events: none; }
.redeem-btn.loading .redeem-btn-arrow { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.redeem-status {
  min-height: 22px;
  margin: 12px 0 0 26px;
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color 0.3s;
}
.redeem-status.ok { color: var(--ok); }
.redeem-status.err { color: var(--err); }
.redeem-hint {
  margin: 6px 0 0 26px;
  font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--ink-3);
}
.redeem-trust {
  display: flex; flex-wrap: wrap; gap: 10px 26px;
  margin: 16px 0 0 26px;
}
.redeem-trust li {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: 0.05em; color: var(--ink-2);
}
.redeem-trust svg { width: 15px; height: 15px; flex: none; color: var(--ok); }

.scroll-hint {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-size: 10px; letter-spacing: 0.4em; color: var(--ink-3);
}
.scroll-hint i {
  width: 1px; height: 44px;
  background: linear-gradient(180deg, rgba(16, 16, 20, 0.45), transparent);
  animation: drip 2s var(--ease-io) infinite;
  transform-origin: top;
}
@keyframes drip { 0% { transform: scaleY(0); } 55% { transform: scaleY(1); } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- marquee (logo + name) ---------- */
.marquee {
  position: relative;
  border-block: 1px solid var(--line);
  padding: clamp(20px, 3vw, 34px) 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.4);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex; align-items: center;
  gap: clamp(36px, 5vw, 80px);
  width: max-content;
  padding-right: clamp(36px, 5vw, 80px);
  animation: marquee 30s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.mq-item {
  display: inline-flex; align-items: center;
  gap: clamp(12px, 1.6vw, 20px);
  white-space: nowrap;
  cursor: default;
  transition: transform 0.45s var(--ease-out);
}
.mq-item:hover { transform: translateY(-4px); }
.mq-ic {
  flex: none;
  width: clamp(26px, 3.2vw, 40px); height: clamp(26px, 3.2vw, 40px);
  background: rgba(16, 16, 20, 0.26);
  transition: background 0.45s, filter 0.45s;
}
.mq-name {
  font-family: var(--f-display);
  font-size: clamp(28px, 3.9vw, 50px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(16, 16, 20, 0.32);
  transition: color 0.45s, -webkit-text-stroke-color 0.45s, text-shadow 0.45s;
}
.mq-img {
  height: clamp(30px, 3.9vw, 50px); width: auto;
  opacity: 0.78;
  transition: opacity 0.45s, filter 0.45s;
}
.mq-item:hover .mq-ic {
  background: var(--c);
  filter: drop-shadow(0 8px 18px color-mix(in srgb, var(--c) 55%, transparent));
}
.mq-item:hover .mq-name {
  color: var(--c);
  -webkit-text-stroke-color: transparent;
  text-shadow: 0 0 46px color-mix(in srgb, var(--c) 45%, transparent);
}
.mq-item:hover .mq-img {
  opacity: 1;
  filter: drop-shadow(0 10px 22px rgba(17, 60, 207, 0.4));
}
.mq-sep { color: rgba(16, 16, 20, 0.2); font-size: clamp(14px, 1.6vw, 20px); }

/* ---------- shared section ---------- */
.section { position: relative; padding: clamp(90px, 13vh, 170px) var(--pad); max-width: var(--maxw); margin: 0 auto; }
.section-head { margin-bottom: clamp(48px, 7vh, 88px); }
.section-head .tag { margin-bottom: 20px; }
.section-title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(38px, 5.6vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.section-title em {
  background: linear-gradient(100deg, var(--violet), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-sub { margin-top: 18px; color: var(--ink-2); font-size: 15px; max-width: 520px; }

/* ---------- platforms grid ---------- */
.pf-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 26px);
}
.pf-card {
  --c: #7c5cff;
  position: relative;
  padding: clamp(26px, 2.8vw, 38px);
  border-radius: var(--r-l);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform 0.55s var(--ease-out), border-color 0.45s, box-shadow 0.55s;
}
.pf-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 130% at 0% 0%, color-mix(in srgb, var(--c) 12%, transparent), transparent 58%);
  opacity: 0.35;
  transition: opacity 0.45s;
  pointer-events: none;
}
.pf-card:hover {
  transform: translateY(-7px);
  border-color: color-mix(in srgb, var(--c) 42%, transparent);
  box-shadow: 0 30px 70px -30px color-mix(in srgb, var(--c) 45%, transparent);
}
.pf-card:hover::before { opacity: 1; }
.pf-badge {
  position: absolute; top: 16px; right: 16px;
  padding: 4px 10px;
  border-radius: 8px;
  font-family: var(--f-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.14em;
  color: var(--ink-3);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line-2);
  transition: color 0.4s, border-color 0.4s;
}
.pf-card:hover .pf-badge { color: var(--c); border-color: color-mix(in srgb, var(--c) 50%, transparent); }
/* 实时通道状态灯（pf-card 左上，公开 /api/status 档位，不暴露库存数） */
.pf-live {
  position: absolute; top: 16px; left: 16px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: color 0.4s, border-color 0.4s;
}
.pf-live i {
  width: 7px; height: 7px; border-radius: 50%;
  flex: none;
}
.pf-live em { font-style: normal; }
.pf-live--plenty { color: var(--ok); border-color: rgba(43, 179, 128, 0.4); }
.pf-live--plenty i { background: var(--ok); box-shadow: 0 0 8px rgba(43, 179, 128, 0.7); animation: pf-pulse 2.2s infinite; }
.pf-live--tight { color: var(--warn, #e09500); border-color: rgba(224, 149, 0, 0.4); }
.pf-live--tight i { background: var(--warn, #e09500); }
.pf-live--empty { color: var(--ink-3); }
.pf-live--empty i { background: var(--ink-3); opacity: 0.6; }
@keyframes pf-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(43, 179, 128, 0.7); }
  50% { box-shadow: 0 0 2px rgba(43, 179, 128, 0.25); }
}
@media (prefers-reduced-motion: reduce) { .pf-live--plenty i { animation: none; } }
.pf-logo {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(16, 16, 20, 0.07);
  box-shadow: 0 12px 28px -12px color-mix(in srgb, var(--c) 55%, transparent);
  margin-bottom: 22px;
  transition: transform 0.5s var(--ease-out);
}
.pf-card:hover .pf-logo { transform: translateY(-3px) rotate(-4deg) scale(1.05); }
.pf-logo .b-ic { width: 27px; height: 27px; background: color-mix(in srgb, var(--c) 82%, #101014); }
.pf-logo-img { height: 22px; width: auto; }
.pf-card h3 {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(19px, 2vw, 24px); letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.pf-card > p { color: var(--ink-2); font-size: 13.5px; letter-spacing: 0.03em; }

/* ---------- compare table ---------- */
.cmp-card {
  border-radius: var(--r-l);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-l);
  padding: clamp(10px, 1.6vw, 20px);
}
.cmp-scroll { overflow-x: auto; border-radius: calc(var(--r-l) - 10px); }
.cmp-inner { position: relative; min-width: 780px; }
.cmp-hl {
  position: absolute; top: 8px; bottom: 8px;
  left: 16%; width: 27%;
  border-radius: 18px;
  background: linear-gradient(165deg, rgba(124, 92, 255, 0.1), rgba(14, 168, 216, 0.07));
  border: 1px solid rgba(124, 92, 255, 0.34);
  box-shadow: 0 26px 60px -26px rgba(109, 76, 255, 0.5);
  pointer-events: none;
}
.cmp-table { position: relative; width: 100%; table-layout: fixed; border-collapse: collapse; }
.cmp-table .c-dim { width: 16%; }
.cmp-table .c-sg  { width: 27%; }
.cmp-table .c-alt { width: 28.5%; }
.cmp-table th, .cmp-table td {
  padding: 19px 22px;
  text-align: left;
  font-size: 14px;
  vertical-align: middle;
}
.cmp-table thead th {
  padding-top: 24px; padding-bottom: 18px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-3);
}
.cmp-brand {
  font-family: var(--f-display); font-size: 14px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--violet-deep);
}
.cmp-pill {
  display: inline-block; margin-left: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.14em;
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--violet-deep));
  box-shadow: 0 8px 18px -6px rgba(109, 76, 255, 0.6);
  vertical-align: 2px;
}
.cmp-table tbody td { border-top: 1px solid rgba(16, 16, 20, 0.06); color: var(--ink-2); transition: background 0.3s; }
.cmp-table td.cmp-dim { color: var(--ink-3); font-size: 12.5px; letter-spacing: 0.08em; }
.cmp-table td.cmp-sg { color: var(--ink); font-weight: 600; }
.cmp-table tbody tr:hover td { background: rgba(255, 255, 255, 0.62); }
.cmp-table tbody tr:hover td.cmp-sg { background: rgba(124, 92, 255, 0.06); }
.cmp-note {
  margin-top: 20px;
  text-align: center;
  font-size: 12px; letter-spacing: 0.05em; color: var(--ink-3);
}

/* ---------- steps ---------- */
.steps-track {
  position: relative;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 56px);
}
.steps-line {
  position: absolute; top: 30px; left: 0; right: 0; height: 1px;
  background: var(--line);
}
.steps-line-fill {
  display: block; height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transform: scaleX(0); transform-origin: left;
  box-shadow: 0 0 18px rgba(124, 92, 255, 0.5);
}
.step { position: relative; padding-top: 84px; }
.step::before {
  content: ""; position: absolute; top: 24px; left: 0;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg);
  border: 1px solid rgba(16, 16, 20, 0.32);
  box-shadow: 0 0 0 5px var(--bg);
  transition: background 0.5s, border-color 0.5s, box-shadow 0.5s;
}
.step:hover::before {
  background: var(--violet); border-color: var(--violet);
  box-shadow: 0 0 0 5px var(--bg), 0 0 22px rgba(124, 92, 255, 0.7);
}
.step-num {
  position: absolute; top: 44px; right: 8px;
  font-family: var(--f-display); font-weight: 700;
  font-size: clamp(58px, 6vw, 88px); line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(16, 16, 20, 0.14);
  transition: -webkit-text-stroke-color 0.5s;
  user-select: none;
}
.step:hover .step-num { -webkit-text-stroke-color: rgba(124, 92, 255, 0.6); }
.step-icon {
  width: 46px; height: 46px; margin-bottom: 22px;
  display: grid; place-items: center;
  border-radius: 14px;
  color: var(--violet-deep);
  background: rgba(124, 92, 255, 0.09);
  border: 1px solid rgba(124, 92, 255, 0.26);
}
.step-icon svg { width: 22px; height: 22px; }
.step h3 {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(20px, 2vw, 25px); letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.step h3 em { color: var(--ink-3); font-size: 0.68em; font-weight: 500; letter-spacing: 0.12em; margin-left: 8px; text-transform: uppercase; }
.step p { color: var(--ink-2); font-size: 14.5px; line-height: 1.9; max-width: 330px; }

/* ---------- assurance spotlight ---------- */
.spot-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2vw, 26px);
}
.spot-card {
  position: relative;
  padding: clamp(28px, 3.4vw, 44px);
  border-radius: var(--r-l);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-s);
  overflow: hidden;
  transition: transform 0.55s var(--ease-out), border-color 0.45s, background 0.45s, box-shadow 0.55s;
}
.spot-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(520px circle at var(--mx, 50%) var(--my, 50%),
              rgba(124, 92, 255, 0.1), transparent 62%);
  opacity: 0; transition: opacity 0.45s;
  pointer-events: none;
}
.spot-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  padding: 1px;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%),
              rgba(124, 92, 255, 0.6), transparent 55%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  opacity: 0; transition: opacity 0.45s;
  pointer-events: none;
}
.spot-card:hover { transform: translateY(-7px); background: var(--glass-2); box-shadow: var(--shadow-m); }
.spot-card:hover::before, .spot-card:hover::after { opacity: 1; }
.spot-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 16px;
  color: var(--cyan);
  background: rgba(14, 168, 216, 0.08);
  border: 1px solid rgba(14, 168, 216, 0.24);
  margin-bottom: 26px;
  transition: transform 0.5s var(--ease-out), color 0.4s;
}
.spot-card:hover .spot-icon { transform: translateY(-3px) rotate(-4deg) scale(1.06); color: var(--violet-deep); }
.spot-icon svg { width: 25px; height: 25px; }
.spot-en {
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.3em;
  color: var(--ink-3); text-transform: uppercase;
  margin-bottom: 8px;
}
.spot-card h3 { font-family: var(--f-display); font-size: clamp(21px, 2.2vw, 27px); font-weight: 600; margin-bottom: 12px; }
.spot-desc { color: var(--ink-2); font-size: 14px; line-height: 1.9; max-width: 380px; }

/* ---------- pricing ---------- */
.price-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 26px);
  align-items: stretch;
}
@media (min-width: 861px) {
  .price-grid--n1 { grid-template-columns: minmax(0, 420px); justify-content: center; }
  .price-grid--n2 { grid-template-columns: repeat(2, minmax(0, 380px)); justify-content: center; }
  .price-grid--n4 { grid-template-columns: repeat(4, 1fr); }
  .price-grid--n4 .price-num { font-size: clamp(40px, 3.6vw, 54px); }
}
.price-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: clamp(30px, 3.2vw, 44px);
  border-radius: var(--r-l);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.55s var(--ease-out), border-color 0.45s, box-shadow 0.55s;
}
.price-card:hover { transform: translateY(-8px); border-color: var(--line-2); box-shadow: var(--shadow-l); }
.price-card--featured {
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(150deg, var(--violet), rgba(14, 168, 216, 0.75)) border-box;
  border: 1px solid transparent;
  box-shadow: 0 34px 90px -34px rgba(109, 76, 255, 0.42);
}
.price-flag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  padding: 5px 16px;
  border-radius: 999px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.18em;
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--violet-deep));
  box-shadow: 0 10px 26px -8px rgba(109, 76, 255, 0.7);
  white-space: nowrap;
}
.price-plan {
  font-family: var(--f-display); font-weight: 600; font-size: 19px;
  margin-bottom: 20px;
}
.price-plan em { display: block; font-size: 11px; font-weight: 500; letter-spacing: 0.26em; color: var(--ink-3); margin-top: 6px; }
.price-num {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(52px, 5vw, 68px); line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}
.price-num .cur { font-size: 0.42em; vertical-align: 0.55em; margin-right: 4px; color: var(--ink-2); }
.price-num .per { font-size: 0.24em; font-weight: 400; color: var(--ink-3); margin-left: 8px; letter-spacing: 0; }
.price-feats { display: flex; flex-direction: column; gap: 13px; margin-bottom: 34px; flex: 1; }
.price-feats li {
  position: relative; padding-left: 24px;
  font-size: 14px; color: var(--ink-2);
}
.price-feats li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 12px; height: 6px;
  border-left: 1.5px solid var(--ok);
  border-bottom: 1.5px solid var(--ok);
  transform: rotate(-45deg);
}
.price-btn { width: 100%; }
.price-card--dyn { animation: plan-in 0.7s var(--ease-out) both; }
@keyframes plan-in { from { opacity: 0; transform: translateY(22px); } }

/* plan tier badge — SPEC3 §5 (sibling-level pill, works on featured + plain cards) */
.price-card .tier-badge {
  position: absolute; top: 18px; right: 18px;
  display: inline-flex; align-items: center;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 10px; font-weight: 700; letter-spacing: 0.16em;
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--violet-deep));
  box-shadow: 0 8px 20px -8px rgba(109, 76, 255, 0.6);
  white-space: nowrap;
}
.price-card .tier-badge--hd {
  background: linear-gradient(135deg, var(--cyan), #0b7ea5);
  box-shadow: 0 8px 20px -8px rgba(14, 168, 216, 0.55);
}
.price-plats {
  margin: -12px 0 18px;
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--ink-3);
}
/* 号源档位行 + 省钱对比行（SPEC3 §7） */
.price-scope {
  margin: -6px 0 0;
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--ink-2);
}
.price-scope + .price-plats { margin-top: 4px; }
.price-scope:last-of-type, .price-plats:last-of-type { margin-bottom: 18px; }
.price-save {
  margin: -10px 0 14px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.03em;
  color: var(--ok);
}
.plans-note {
  margin-top: 26px;
  text-align: center;
  font-size: 12.5px; letter-spacing: 0.06em;
  color: var(--ink-3);
  cursor: pointer;
  transition: color 0.3s;
}
.plans-note:hover { color: var(--violet-deep); }
.plans-hint {
  margin-top: 22px;
  text-align: center;
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--ink-3); opacity: 0.85;
  max-width: 640px; margin-left: auto; margin-right: auto;
}

/* ---------- pay modal (white glass) ---------- */
.pay-modal {
  position: fixed; inset: 0; z-index: 500;
  display: grid; place-items: center;
  padding: 20px;
}
/* landing page hides the native cursor for the custom one (z300 < modal z500) —
   restore normal cursors inside the modal */
.pay-modal, .pay-modal * { cursor: auto; }
.pay-modal button, .pay-modal a { cursor: pointer; }
.pay-backdrop {
  position: absolute; inset: 0;
  background: rgba(247, 246, 242, 0.62);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  opacity: 0;
  transition: opacity 0.3s;
}
.pay-modal.open .pay-backdrop { opacity: 1; }
.pay-dialog {
  position: relative;
  width: min(460px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding: clamp(26px, 4vw, 38px);
  border-radius: var(--r-l);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.8));
  border: 1px solid rgba(16, 16, 20, 0.09);
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  box-shadow:
    0 50px 120px -40px rgba(60, 50, 120, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  opacity: 0;
  transform: translateY(26px) scale(0.97);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}
.pay-modal.open .pay-dialog { opacity: 1; transform: none; }
.pay-x {
  position: absolute; top: 16px; right: 16px;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--ink-3);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
  transition: color 0.3s, border-color 0.3s, transform 0.3s;
}
.pay-x:hover { color: var(--ink); border-color: var(--line-2); transform: rotate(90deg); }
.pay-tag { margin-bottom: 14px; }
.pay-title {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(24px, 3vw, 30px); letter-spacing: -0.01em;
  margin-bottom: 22px;
}
.pay-plan {
  display: flex; align-items: baseline; gap: 12px;
  padding: 16px 18px;
  border-radius: var(--r-m);
  background: rgba(124, 92, 255, 0.06);
  border: 1px solid rgba(124, 92, 255, 0.22);
}
.pay-plan-label { font-size: 11px; letter-spacing: 0.2em; color: var(--ink-3); text-transform: uppercase; }
.pay-plan-name { flex: 1; font-family: var(--f-display); font-size: 17px; font-weight: 600; }
.pay-plan-price { font-family: var(--f-display); font-size: 19px; font-weight: 700; color: var(--violet-deep); }
.pay-sec {
  margin: 22px 0 10px;
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-3);
}
.pay-channels { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pay-ch {
  position: relative;
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line-2);
  text-align: left;
  transition: border-color 0.35s, background 0.35s, box-shadow 0.35s, transform 0.2s;
}
.pay-ch:hover { border-color: rgba(16, 16, 20, 0.3); transform: translateY(-2px); }
.pay-ch.sel {
  border-color: rgba(124, 92, 255, 0.65);
  background: rgba(124, 92, 255, 0.07);
  box-shadow: 0 14px 34px -16px rgba(109, 76, 255, 0.55);
}
.pay-ch-logo {
  flex: none; width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  font-size: 17px; font-weight: 700; color: #fff;
}
.pay-ch-logo--ali { background: linear-gradient(135deg, #1677ff, #0e4fd8); box-shadow: 0 8px 18px -8px rgba(22, 119, 255, 0.8); }
.pay-ch-logo--wx  { background: linear-gradient(135deg, #09bb07, #069c56); box-shadow: 0 8px 18px -8px rgba(9, 187, 7, 0.8); }
.pay-ch-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.pay-ch-text strong { font-size: 14px; font-weight: 600; }
.pay-ch-text em { font-size: 11px; color: var(--ink-3); }
.pay-ch-check { flex: none; color: var(--violet); opacity: 0; transform: scale(0.5); transition: opacity 0.3s, transform 0.35s var(--ease-out); }
.pay-ch.sel .pay-ch-check { opacity: 1; transform: scale(1); }
.pay-total {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-top: 20px; padding-top: 18px;
  border-top: 1px dashed var(--line-2);
}
.pay-total span { font-size: 13px; color: var(--ink-2); }
.pay-total strong { font-family: var(--f-display); font-size: 26px; font-weight: 700; letter-spacing: -0.01em; }
.pay-go { width: 100%; margin-top: 18px; }
.pay-go-arrow { transition: transform 0.35s var(--ease-out); }
.pay-go:hover .pay-go-arrow { transform: translateX(4px); }
.pay-err { min-height: 20px; margin-top: 10px; font-size: 12.5px; color: var(--err); text-align: center; }
.pay-note {
  margin-top: 6px;
  font-size: 11.5px; line-height: 1.7; color: var(--ink-3); text-align: center;
}
.pay-have {
  display: block; margin: 10px auto 0;
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--violet-deep);
  border-bottom: 1px dashed rgba(124, 92, 255, 0.5);
  padding-bottom: 1px;
  transition: color 0.3s, border-color 0.3s;
}
.pay-have:hover { color: var(--ink); border-color: var(--ink); }
@media (max-width: 480px) {
  .pay-channels { grid-template-columns: 1fr; }
}

/* ---------- faq ---------- */
.faq-list { max-width: 860px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 26px 4px;
  text-align: left;
  font-size: clamp(15.5px, 1.7vw, 18.5px);
  font-weight: 500;
  transition: color 0.3s, padding-left 0.4s var(--ease-out);
}
.faq-q:hover { color: var(--violet-deep); padding-left: 12px; }
.faq-icon { position: relative; flex: none; width: 18px; height: 18px; }
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  background: var(--ink-2);
  transition: transform 0.45s var(--ease-out), background 0.3s;
}
.faq-icon::before { width: 100%; height: 1.5px; }
.faq-icon::after { width: 1.5px; height: 100%; }
.faq-item.open .faq-icon::after { transform: rotate(90deg); }
.faq-item.open .faq-icon::before { background: var(--violet); }
.faq-item.open .faq-icon::after { background: var(--violet); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.55s var(--ease-out); }
.faq-a > div { overflow: hidden; }
.faq-a p {
  padding: 0 4px 28px;
  color: var(--ink-2); font-size: 14.5px; line-height: 1.95;
  max-width: 700px;
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }

/* ---------- final cta ---------- */
.final-cta { text-align: center; padding-block: clamp(80px, 14vh, 180px); }
.cta-title {
  font-family: var(--f-display); font-weight: 600;
  font-size: clamp(44px, 7vw, 96px);
  line-height: 1.05; letter-spacing: -0.03em;
  margin-bottom: 42px;
}
.cta-title em {
  background: linear-gradient(100deg, var(--violet), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.btn-lg { padding: 19px 44px; font-size: 16px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 0 var(--pad) 34px; overflow: hidden; }
.footer-word {
  font-family: var(--f-display); font-weight: 700;
  font-size: clamp(64px, 12.5vw, 190px);
  line-height: 1.05; letter-spacing: -0.02em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(16, 16, 20, 0.12);
  user-select: none;
  margin-top: -0.12em;
  transform: translateY(0.14em);
}
.footer-row {
  max-width: var(--maxw); margin: 26px auto 0;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--ink-3); letter-spacing: 0.05em;
}
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { transition: color 0.3s; }
.footer-links a:hover { color: var(--ink); }

/* ---------- reveal defaults (JS animates) ---------- */
[data-reveal] { will-change: transform, opacity; }

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-meta { max-width: 560px; padding-bottom: 0; }
  .pf-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .steps-track { grid-template-columns: 1fr; gap: 44px; }
  .steps-line { top: 0; bottom: 0; left: 6px; right: auto; width: 1px; height: auto; }
  .steps-line-fill { transform: scaleY(0); transform-origin: top; width: 100%; height: 100%; }
  .step { padding-top: 0; padding-left: 40px; }
  .step::before { top: 6px; left: 0; }
  .step-num { position: static; display: block; font-size: 54px; margin-bottom: 14px; -webkit-text-stroke-color: rgba(16,16,20,.16); }
  .spot-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .price-card--featured { order: -1; }
}
@media (max-width: 560px) {
  .hero { padding-top: calc(var(--nav-h) + 5vh); }
  .hero-title { font-size: clamp(58px, 17.5vw, 110px); }
  .ht-cn { letter-spacing: 0.3em; }
  .hero-stats { flex-wrap: wrap; gap: 18px 28px; }
  .redeem { flex-wrap: wrap; border-radius: 26px; padding: 14px; gap: 10px; }
  .redeem-ticket { margin-left: 8px; }
  .redeem input { width: 100%; flex: 1 1 calc(100% - 60px); padding: 6px 0; }
  .redeem-btn { width: 100%; justify-content: center; padding: 15px; }
  .redeem-status, .redeem-hint, .redeem-trust { margin-left: 10px; }
  .pf-grid { grid-template-columns: 1fr; }
  .cmp-table th, .cmp-table td { padding: 15px 16px; font-size: 13px; }
  .scroll-hint { display: none; }
  .footer-row { justify-content: center; text-align: center; }
}