/* =====================================================================
   SHOWIFY Landing — SKT-inspired responsive design system
   순수 CSS / Pretendard / 모바일 햄버거 / 가독성 우선
   ===================================================================== */

:root{
    /* Palette */
    --red:        #ea002c;
    --red-deep:   #b80022;
    --red-soft:   #fff0f2;
    --blue:       #0a6cf1;
    --blue-soft:  #eef4ff;
    --gold:       #f5a300;
    --green:      #18a957;
    --ink:        #15161b;   /* 본문 텍스트 / 다크 섹션 */
    --ink-2:      #1d1f27;
    --paper:      #ffffff;
    --mist:       #f4f6fa;   /* 밝은 회색 섹션 */
    --line:       #e7ebf1;
    --muted:      #5b616e;
    --muted-2:    #8b909c;

    /* Type */
    --font: 'Pretendard','Pretendard Variable',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;

    /* Layout */
    --maxw: 1180px;
    --header-h: 64px;
    --radius: 18px;
    --radius-sm: 12px;
    --radius-pill: 999px;

    /* Effects */
    --shadow-sm: 0 2px 10px rgba(21,22,27,.06);
    --shadow-md: 0 14px 40px rgba(21,22,27,.10);
    --shadow-red: 0 14px 34px rgba(234,0,44,.28);
    --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset / base ---------- */
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
    font-family:var(--font);
    color:var(--ink);
    background:var(--paper);
    line-height:1.6;
    letter-spacing:-.02em;
    overflow-x:hidden;
    word-break:keep-all;
}
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; cursor:pointer; border:none; background:none; }
em{ font-style:normal; }
:focus-visible{ outline:3px solid var(--blue); outline-offset:2px; border-radius:4px; }

/* ---------- Shared layout helpers ---------- */
.sf-wrap{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 20px; }
.sf-wrap--center{ text-align:center; }
.sf-wrap--narrow{ max-width:820px; }
.sf-section{ padding:72px 0; }
.sf-section--mist{ background:var(--mist); }
.sf-text-center{ text-align:center; }
.sf-mb-lg{ margin-bottom:40px; }

.sf-eyebrow{
    display:inline-block;
    font-size:.78rem; font-weight:800; letter-spacing:.18em;
    color:var(--red); margin-bottom:14px;
}
.sf-eyebrow--blue{ color:var(--blue); }

.sf-head{ text-align:center; max-width:760px; margin:0 auto 48px; }
.sf-head__title{
    font-size:clamp(1.65rem,4.2vw,2.6rem);
    font-weight:900; line-height:1.28; letter-spacing:-.035em;
}
.sf-head__desc{
    margin-top:18px; color:var(--muted);
    font-size:clamp(.95rem,2.2vw,1.08rem);
}
.sf-em-red{ color:var(--red); }
.sf-em-blue{ color:var(--blue); }

/* ---------- Buttons ---------- */
.sf-btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    font-weight:800; border-radius:var(--radius-pill);
    padding:13px 24px; font-size:.95rem;
    transition:transform .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease), color .18s;
    white-space:nowrap;
}
.sf-btn--sm{ padding:9px 18px; font-size:.84rem; }
.sf-btn--lg{ padding:16px 30px; font-size:1.02rem; }
.sf-btn--block{ display:flex; width:100%; }
.sf-btn--red{ background:var(--red); color:#fff; box-shadow:var(--shadow-red); }
.sf-btn--red:hover{ background:var(--red-deep); transform:translateY(-2px); }
.sf-btn--blue{ background:var(--blue); color:#fff; }
.sf-btn--blue:hover{ filter:brightness(.94); transform:translateY(-2px); }
.sf-btn--dark{ background:var(--ink); color:#fff; }
.sf-btn--dark:hover{ background:#000; transform:translateY(-2px); }
.sf-btn--ghost{ border:1.5px solid var(--line); color:var(--ink); background:#fff; }
.sf-btn--ghost:hover{ background:var(--mist); }
.sf-btn--text{ color:var(--ink); }
.sf-btn--text:hover{ color:var(--red); }
.sf-btn--outline-light{ border:1.5px solid rgba(255,255,255,.4); color:#fff; }
.sf-btn--outline-light:hover{ background:rgba(255,255,255,.12); transform:translateY(-2px); }

/* ---------- Promo bar ---------- */
.sf-promo{ background:var(--ink); color:#fff; }
.sf-promo__inner{
    max-width:var(--maxw); margin:0 auto; padding:9px 20px;
    text-align:center; font-size:.8rem; font-weight:500;
}
.sf-promo__hl{ color:#ffd23d; font-weight:800; }
.sf-promo__flame{ margin-right:4px; }

/* ---------- Header ---------- */
.sf-header{
    position:sticky; top:0; z-index:900;
    background:rgba(255,255,255,.9);
    backdrop-filter:saturate(180%) blur(14px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease);
}
.sf-header.is-scrolled{ box-shadow:var(--shadow-sm); }
.sf-header__inner{
    max-width:var(--maxw); margin:0 auto; padding:0 20px;
    height:var(--header-h);
    display:flex; align-items:center; gap:28px;
}
.sf-logo{ display:flex; align-items:center; gap:6px; flex-shrink:0; }
.sf-logo__word{
    font-size:1.55rem; font-weight:900; letter-spacing:-.04em; color:var(--red);
}
.sf-logo__badge{
    font-size:.62rem; font-weight:800; color:#fff; background:var(--red);
    padding:2px 6px; border-radius:6px; line-height:1;
}
.sf-nav{ display:flex; align-items:center; gap:26px; margin-right:auto; }
.sf-nav__link{
    font-size:.95rem; font-weight:700; color:#444b58;
    position:relative; transition:color .18s;
}
.sf-nav__link::after{
    content:""; position:absolute; left:0; bottom:-22px; height:3px; width:0;
    background:var(--red); transition:width .22s var(--ease);
}
.sf-nav__link:hover{ color:var(--red); }
.sf-nav__link:hover::after{ width:100%; }
.sf-nav__link--accent{ color:var(--blue); font-weight:800; }
.sf-nav__link--accent::after{ background:var(--blue); }

.sf-header__cta{ display:flex; align-items:center; gap:8px; }
.sf-hello{ font-size:.85rem; font-weight:700; color:#444b58; }
.sf-hello i{ color:var(--blue); margin-right:3px; }

/* Hamburger */
.sf-burger{
    display:none; width:42px; height:42px; flex-direction:column;
    justify-content:center; align-items:center; gap:5px; border-radius:10px;
}
.sf-burger span{
    width:22px; height:2.5px; background:var(--ink); border-radius:2px;
    transition:transform .3s var(--ease), opacity .2s;
}
.sf-burger.is-open span:nth-child(1){ transform:translateY(7.5px) rotate(45deg); }
.sf-burger.is-open span:nth-child(2){ opacity:0; }
.sf-burger.is-open span:nth-child(3){ transform:translateY(-7.5px) rotate(-45deg); }

/* ---------- Mobile fullscreen menu ---------- */
.sf-mobile{
    position:fixed; inset:0; z-index:899;
    background:#fff;
    padding:calc(var(--header-h) + 28px) 26px 40px;
    display:flex; flex-direction:column; gap:28px;
    transform:translateX(100%);
    transition:transform .38s var(--ease);
    visibility:hidden;
}
.sf-mobile.is-open{ transform:translateX(0); visibility:visible; }
.sf-mobile__nav{ display:flex; flex-direction:column; }
.sf-mobile__link{
    display:flex; align-items:center; gap:14px;
    font-size:1.5rem; font-weight:800; letter-spacing:-.03em;
    padding:18px 0; border-bottom:1px solid var(--line);
}
.sf-mobile__num{
    font-size:.8rem; font-weight:800; color:var(--red);
    border:1.5px solid var(--red-soft); background:var(--red-soft);
    padding:3px 8px; border-radius:8px;
}
.sf-mobile__cta{ display:flex; flex-direction:column; gap:12px; margin-top:auto; }

/* ---------- Hero ---------- */
.sf-hero{
    position:relative; overflow:hidden; color:#fff;
    background:linear-gradient(155deg,#0c0d12 0%,#181a23 55%,#2a0a12 100%);
    padding:64px 0 88px;
}
.sf-hero__bg{
    position:absolute; inset:0; pointer-events:none;
    background:
        radial-gradient(60% 50% at 85% 8%, rgba(234,0,44,.42), transparent 60%),
        radial-gradient(46% 44% at 12% 92%, rgba(10,108,241,.30), transparent 60%);
}
.sf-hero__inner{
    position:relative; z-index:2;
    max-width:var(--maxw); margin:0 auto; padding:0 20px;
    display:grid; grid-template-columns:1.15fr .85fr; gap:54px; align-items:center;
}
.sf-hero__copy{ display:flex; flex-direction:column; gap:20px; }
.sf-tag{
    display:inline-flex; align-items:center; gap:8px; width:fit-content;
    background:var(--red); color:#fff; font-size:.76rem; font-weight:800;
    letter-spacing:.04em; padding:7px 14px; border-radius:var(--radius-pill);
}
.sf-tag__dot{ width:7px; height:7px; border-radius:50%; background:#fff; animation:sf-pulse 1.4s infinite; }
@keyframes sf-pulse{ 0%,100%{ opacity:1 } 50%{ opacity:.3 } }

.sf-hero__title{
    font-size:clamp(2.1rem,5.6vw,3.55rem);
    font-weight:900; line-height:1.18; letter-spacing:-.045em;
}
.sf-hero__lead{
    color:#c5c9d4; font-size:clamp(.97rem,2.4vw,1.12rem);
    max-width:34em; line-height:1.7;
}
.sf-hero__actions{ display:flex; gap:12px; flex-wrap:wrap; margin-top:6px; }
.sf-hero__checks{ display:flex; gap:22px; flex-wrap:wrap; margin-top:6px; }
.sf-hero__checks li{ font-size:.82rem; color:#aab0bd; }
.sf-hero__checks i{ color:var(--blue); margin-right:5px; }

/* Hero demo card (signature) */
.sf-demo{
    position:relative; background:#fff; color:var(--ink);
    border-radius:24px; padding:26px; box-shadow:var(--shadow-md);
    display:flex; flex-direction:column; gap:16px;
}
.sf-demo__ribbon{
    position:absolute; top:-12px; right:-8px; rotate:6deg;
    background:var(--red); color:#fff; font-size:.72rem; font-weight:900;
    padding:6px 12px; border-radius:var(--radius-pill); box-shadow:var(--shadow-sm);
}
.sf-demo__title{ font-size:1.12rem; font-weight:800; display:flex; align-items:center; gap:8px; }
.sf-demo__title i{ color:var(--red); }
.sf-demo__drop{
    border:1.5px dashed #cdd3dd; border-radius:16px; padding:22px; text-align:center;
    transition:border-color .2s, background .2s;
}
.sf-demo__drop:hover{ border-color:var(--red); background:var(--red-soft); }
.sf-demo__drop i{ font-size:2.1rem; color:var(--muted-2); margin-bottom:8px; }
.sf-demo__drop p{ font-weight:700; font-size:.9rem; }
.sf-demo__drop span{ font-size:.76rem; color:var(--muted-2); }

.sf-steps{ display:flex; flex-direction:column; gap:8px; background:var(--mist); padding:14px; border-radius:14px; }
.sf-step{
    display:flex; justify-content:space-between; align-items:center;
    font-size:.85rem; padding:6px 4px; border-radius:8px;
    transition:background .25s, color .25s;
}
.sf-step__label{ font-weight:600; color:#3a404c; }
.sf-step__state{ font-size:.78rem; font-weight:700; color:var(--muted-2); }
.sf-step.is-active{ background:#fff; box-shadow:var(--shadow-sm); }
.sf-step.is-active .sf-step__state{ color:var(--blue); }
.sf-step.is-done .sf-step__state{ color:var(--green); }
.sf-step.is-done .sf-step__state::after{ content:" ✓"; }

/* ---------- Features ---------- */
.sf-tabs{
    display:flex; gap:8px; justify-content:center; flex-wrap:wrap; margin-bottom:36px;
}
.sf-tab{
    font-size:.85rem; font-weight:800; color:#4a505c;
    background:#f1f3f7; padding:11px 16px; border-radius:12px;
    transition:background .2s, color .2s, box-shadow .2s, transform .15s;
}
.sf-tab:hover{ background:#e7ebf1; }
.sf-tab.is-active{ background:var(--red); color:#fff; box-shadow:var(--shadow-red); }

.sf-panels{
    background:var(--mist); border:1px solid var(--line);
    border-radius:28px; padding:clamp(22px,4vw,52px);
}
.sf-panel{ animation:sf-fade .35s var(--ease); }
.sf-panel[hidden]{ display:none; }
@keyframes sf-fade{ from{ opacity:0; transform:translateY(10px) } to{ opacity:1; transform:none } }

.sf-split{ display:grid; grid-template-columns:1fr 1fr; gap:42px; align-items:center; }
.sf-split__text{ display:flex; flex-direction:column; gap:16px; }
.sf-panel__title{ font-size:clamp(1.3rem,3vw,1.75rem); font-weight:900; line-height:1.34; letter-spacing:-.035em; }
.sf-panel__lead{ color:var(--muted); font-size:.97rem; line-height:1.75; }

.sf-chip{
    width:fit-content; font-size:.72rem; font-weight:800; color:#fff;
    padding:5px 11px; border-radius:7px; letter-spacing:.02em;
}
.sf-chip--red{ background:var(--red); }
.sf-chip--blue{ background:var(--blue); }
.sf-chip--ink{ background:var(--ink); }
.sf-chip--gold{ background:var(--gold); }
.sf-chip--green{ background:var(--green); }

.sf-feature-list{ display:flex; flex-direction:column; gap:12px; background:#fff; border:1px solid var(--line); border-radius:18px; padding:20px; }
.sf-feature-list li{ display:flex; gap:11px; align-items:flex-start; }
.sf-feature-list p{ font-size:.88rem; line-height:1.65; color:#3a404c; }
.sf-feature-list__mark{ color:var(--blue); font-weight:900; font-size:1.05rem; line-height:1.5; flex-shrink:0; }
.sf-feature-list__mark--red{ color:var(--red); }

/* shield (IP/약기법) */
.sf-shield{ background:var(--blue-soft); border:1px solid #d6e4ff; border-radius:16px; padding:16px 18px; }
.sf-shield__head{ font-size:.9rem; font-weight:700; }
.sf-shield__body{ font-size:.82rem; color:#3a404c; margin-top:6px; line-height:1.6; }
.sf-shield__note{ font-size:.72rem; color:var(--muted-2); margin-top:8px; line-height:1.55; }

/* visuals */
.sf-visual{ background:#fff; border:1px solid var(--line); border-radius:22px; padding:26px; display:flex; flex-direction:column; gap:16px; box-shadow:var(--shadow-sm); }
.sf-visual--dark{ background:var(--ink); border-color:transparent; color:#fff; }
.sf-visual__title{ font-size:1.05rem; font-weight:800; display:flex; align-items:center; gap:8px; }
.sf-visual__title i{ color:var(--blue); }
.sf-visual__title--ink{ color:var(--ink); }
.sf-visual__title--red i{ color:var(--red); }
.sf-visual--dark .sf-visual__title{ border-bottom:1px solid rgba(255,255,255,.14); padding-bottom:12px; }
.sf-visual__body{ font-size:.85rem; line-height:1.7; color:#cdd2dc; }
.sf-visual:not(.sf-visual--dark) .sf-visual__body{ color:var(--muted); }
.sf-visual__live{ display:flex; align-items:center; gap:8px; font-size:.9rem; font-weight:800; }
.sf-visual__dot{ width:9px; height:9px; border-radius:50%; background:var(--green); box-shadow:0 0 0 4px rgba(24,169,87,.25); }

.sf-flow{ display:flex; align-items:center; gap:14px; padding:10px 0 10px 14px; border-left:4px solid; }
.sf-flow--red{ border-color:var(--red); }
.sf-flow--blue{ border-color:var(--blue); }
.sf-flow--gold{ border-color:var(--gold); }
.sf-flow__no{ width:26px; height:26px; border-radius:50%; display:grid; place-items:center; font-size:.78rem; font-weight:800; color:#fff; flex-shrink:0; }
.sf-flow--red .sf-flow__no{ background:var(--red); }
.sf-flow--blue .sf-flow__no{ background:var(--blue); }
.sf-flow--gold .sf-flow__no{ background:var(--gold); }
.sf-flow p{ font-size:.85rem; }

.sf-optcards{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.sf-optcard{ border:1px solid var(--line); background:var(--mist); border-radius:14px; padding:16px; }
.sf-optcard--hot{ border-color:#f6c3cc; background:var(--red-soft); }
.sf-optcard__name{ display:block; font-weight:900; font-size:.9rem; margin-bottom:6px; }
.sf-optcard__name--blue{ color:var(--blue); }
.sf-optcard__name--red{ color:var(--red); }
.sf-optcard p{ font-size:.78rem; color:var(--muted); line-height:1.55; }

.sf-callout{ background:#fff; border:1px solid var(--line); border-radius:16px; padding:18px; }
.sf-callout__title{ font-weight:800; font-size:.92rem; margin-bottom:6px; }
.sf-callout__title i{ color:var(--gold); margin-right:5px; }
.sf-callout p{ font-size:.83rem; color:var(--muted); line-height:1.65; }

.sf-compare{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.sf-compare>div{ border-radius:14px; padding:16px; font-size:.8rem; line-height:1.55; }
.sf-compare__before{ background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.12); }
.sf-compare__before span{ display:block; color:#9aa0ad; margin-bottom:8px; font-weight:700; }
.sf-compare__before p{ color:#cdd2dc; }
.sf-compare__after{ background:rgba(234,0,44,.12); border:1px solid rgba(234,0,44,.35); }
.sf-compare__after span{ display:block; color:#ff8095; margin-bottom:8px; font-weight:800; }

.sf-minigrid{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.sf-minigrid li{ background:#fff; border:1px solid var(--line); border-radius:14px; padding:16px 8px; text-align:center; }
.sf-minigrid i{ font-size:1.25rem; margin-bottom:8px; display:block; }
.sf-minigrid li:nth-child(1) i{ color:var(--red); }
.sf-minigrid li:nth-child(2) i{ color:var(--blue); }
.sf-minigrid li:nth-child(3) i{ color:var(--green); }
.sf-minigrid span{ font-size:.76rem; font-weight:800; }

.sf-hashtags{ display:flex; flex-wrap:wrap; gap:8px; }
.sf-hashtags span{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-pill); padding:8px 14px; font-size:.78rem; font-weight:700; color:#4a505c; }

.sf-botbox{ background:#fff; border:1px solid var(--line); border-radius:16px; padding:18px; }
.sf-botbox__title{ font-weight:800; font-size:.9rem; margin-bottom:12px; }
.sf-botbox__grid{ display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.sf-botbox__grid span{ background:var(--mist); border-radius:12px; padding:11px; text-align:center; font-size:.78rem; font-weight:700; color:#3a404c; }

/* ---------- Video ---------- */
.sf-video{
    max-width:880px; margin:0 auto; aspect-ratio:16/9;
    border-radius:24px; overflow:hidden; background:#000;
    border:5px solid #fff; box-shadow:var(--shadow-md);
}
.sf-video iframe{ width:100%; height:100%; border:0; }

/* ---------- Pricing ---------- */
.sf-plans{ display:grid; grid-template-columns:1fr 1fr; gap:26px; max-width:920px; margin:0 auto; align-items:stretch; }
.sf-plan{
    border:2px solid var(--line); border-radius:26px; padding:32px;
    background:#fff; display:flex; flex-direction:column;
    transition:transform .2s var(--ease), border-color .2s;
}
.sf-plan:hover{ transform:translateY(-4px); }
.sf-plan--featured{
    position:relative; border-color:var(--red);
    background:linear-gradient(170deg,#15161b,#22101a);
    color:#fff; box-shadow:var(--shadow-md);
}
.sf-plan__ribbon{
    position:absolute; top:-15px; left:50%; transform:translateX(-50%);
    background:var(--red); color:#fff; font-size:.72rem; font-weight:900;
    letter-spacing:.04em; padding:6px 18px; border-radius:var(--radius-pill); white-space:nowrap;
}
.sf-plan__head{ display:flex; justify-content:space-between; align-items:center; gap:10px; margin-bottom:14px; }
.sf-plan--featured .sf-plan__head{ margin-top:8px; }
.sf-plan__name{ font-size:1.12rem; font-weight:900; }
.sf-plan__name--light{ color:#fff; }
.sf-plan__tag{ font-size:.72rem; font-weight:800; background:#eef0f4; color:#3a404c; padding:5px 11px; border-radius:var(--radius-pill); white-space:nowrap; }
.sf-plan__tag--red{ background:var(--red); color:#fff; }
.sf-plan__desc{ font-size:.88rem; color:var(--muted); margin-bottom:22px; }
.sf-plan__desc--light{ color:#c5c9d4; }
.sf-plan__list{ display:flex; flex-direction:column; gap:14px; padding:22px 0; margin-bottom:22px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.sf-plan__list--light{ border-color:rgba(255,255,255,.14); }
.sf-plan__list li{ display:flex; align-items:flex-start; gap:10px; font-size:.88rem; color:#3a404c; }
.sf-plan__list--light li{ color:#d5d9e1; }
.sf-plan__list i{ color:var(--green); margin-top:3px; }
.sf-plan__list--light i{ color:var(--red); }
.sf-plan>.sf-btn{ margin-top:auto; }

/* ---------- FAQ ---------- */
.sf-faq{ display:flex; flex-direction:column; gap:12px; }
.sf-faq__item{ background:#fff; border:1px solid var(--line); border-radius:18px; padding:0 22px; transition:box-shadow .2s, border-color .2s; }
.sf-faq__item[open]{ box-shadow:var(--shadow-sm); border-color:#dfe4ec; }
.sf-faq__item summary{
    display:flex; align-items:center; gap:10px; cursor:pointer; list-style:none;
    padding:20px 0; font-weight:800; font-size:1rem; line-height:1.5;
}
.sf-faq__item summary::-webkit-details-marker{ display:none; }
.sf-faq__q{ flex-shrink:0; width:26px; height:26px; border-radius:50%; background:var(--red); color:#fff; display:grid; place-items:center; font-size:.8rem; font-weight:900; }
.sf-faq__arrow{ margin-left:auto; color:var(--muted-2); transition:transform .25s var(--ease); }
.sf-faq__item[open] .sf-faq__arrow{ transform:rotate(180deg); }
.sf-faq__a{ padding:0 0 22px 36px; font-size:.9rem; color:var(--muted); line-height:1.75; }

/* ---------- Footer ---------- */
.sf-footer{ background:var(--ink); color:#9aa0ad; padding:60px 0 36px; }
.sf-footer__top{ display:grid; grid-template-columns:2fr 1fr 1fr; gap:30px; padding-bottom:40px; }
.sf-footer__logo{ font-size:1.7rem; font-weight:900; color:#fff; letter-spacing:-.04em; display:block; margin-bottom:14px; }
.sf-footer__logo em{ font-size:.7rem; color:var(--red); }
.sf-footer__brand p{ font-size:.8rem; line-height:1.7; max-width:34em; color:#7f8593; }
.sf-footer__col h5{ color:#fff; font-size:.9rem; font-weight:800; margin-bottom:14px; }
.sf-footer__col ul{ display:flex; flex-direction:column; gap:9px; }
.sf-footer__col a{ font-size:.82rem; transition:color .15s; }
.sf-footer__col a:hover{ color:#fff; }
.sf-footer__label{ font-size:.8rem; }
.sf-footer__mail{ color:#fff; font-weight:800; font-size:.98rem; margin-top:5px; }
.sf-footer__bottom{
    border-top:1px solid #2a2c35; padding-top:26px; margin-top:0;
    display:flex; justify-content:space-between; align-items:center; gap:14px; flex-wrap:wrap;
    font-size:.76rem; color:#6b7180;
}
.sf-footer__links{ display:flex; gap:18px; flex-wrap:wrap; }
.sf-footer__links a:hover{ color:#fff; text-decoration:underline; }
.sf-footer__links--hl{ color:#ff8095; font-weight:700; }

/* ---------- Modal ---------- */
.sf-modal{
    position:fixed; inset:0; z-index:9999; padding:18px;
    display:flex; align-items:center; justify-content:center;
    background:rgba(0,0,0,.72); backdrop-filter:blur(4px);
    opacity:0; pointer-events:none; transition:opacity .28s var(--ease);
}
.sf-modal.is-open{ opacity:1; pointer-events:auto; }
.sf-modal__box{
    width:100%; max-width:720px; max-height:86vh; background:#fff; border-radius:24px;
    display:flex; flex-direction:column; overflow:hidden;
    transform:translateY(28px) scale(.98); transition:transform .3s var(--ease);
}
.sf-modal.is-open .sf-modal__box{ transform:none; }
.sf-modal__head{ display:flex; justify-content:space-between; align-items:center; padding:20px 24px; border-bottom:1px solid var(--line); background:var(--mist); }
.sf-modal__title{ font-size:1.12rem; font-weight:900; }
.sf-modal__close{ font-size:1.7rem; line-height:1; color:var(--muted-2); padding:4px; transition:color .15s; }
.sf-modal__close:hover{ color:var(--ink); }
.sf-modal__body{ flex:1; overflow-y:auto; padding:26px; font-size:.88rem; color:var(--muted); line-height:1.75; }
.sf-modal__body h4{ color:var(--ink); font-size:1rem; font-weight:800; margin:22px 0 8px; }
.sf-modal__body p{ margin-bottom:14px; }
.sf-modal__body strong{ color:var(--ink); }
.sf-modal__body ul{ list-style:disc; padding-left:20px; margin-bottom:14px; display:flex; flex-direction:column; gap:5px; }
.sf-modal__foot{ display:flex; justify-content:flex-end; padding:16px 24px; border-top:1px solid var(--line); background:var(--mist); }

/* ---------- Toast ---------- */
.sf-toast{
    position:fixed; bottom:26px; right:26px; z-index:99999;
    display:flex; align-items:center; gap:10px;
    background:var(--ink); color:#fff; border:1px solid rgba(10,108,241,.4);
    padding:15px 20px; border-radius:16px; box-shadow:var(--shadow-md);
    transform:translateY(20px); opacity:0; pointer-events:none;
    transition:transform .3s var(--ease), opacity .3s;
    max-width:calc(100vw - 40px);
}
.sf-toast.is-open{ transform:none; opacity:1; }
.sf-toast__icon{ color:#7fb0ff; }
.sf-toast__msg{ font-size:.85rem; font-weight:700; }

/* =====================================================================
   Responsive — tablet & mobile
   ===================================================================== */
@media (max-width:1024px){
    .sf-hero__inner{ grid-template-columns:1fr; gap:40px; }
    .sf-demo{ max-width:460px; }
}

@media (max-width:860px){
    .sf-nav, .sf-header__cta{ display:none; }
    .sf-burger{ display:flex; margin-left:auto; }
    .sf-section{ padding:56px 0; }

    .sf-split{ grid-template-columns:1fr; gap:26px; }
    .sf-optcards, .sf-compare, .sf-botbox__grid{ grid-template-columns:1fr; }

    /* 탭: 가로 스크롤 칩 */
    .sf-tabs{
        flex-wrap:nowrap; overflow-x:auto; justify-content:flex-start;
        margin-inline:-20px; padding:4px 20px 14px; scroll-snap-type:x mandatory;
        -webkit-overflow-scrolling:touch;
    }
    .sf-tabs::-webkit-scrollbar{ display:none; }
    .sf-tab{ flex:0 0 auto; scroll-snap-align:start; }

    .sf-plans{ grid-template-columns:1fr; }
    .sf-footer__top{ grid-template-columns:1fr 1fr; }
    .sf-footer__brand{ grid-column:1 / -1; }
}

@media (max-width:560px){
    :root{ --header-h:58px; }
    .sf-promo__inner{ font-size:.72rem; }
    .sf-hero{ padding:44px 0 64px; }
    .sf-hero__actions .sf-btn{ width:100%; }
    .sf-panels{ border-radius:22px; }
    .sf-minigrid{ grid-template-columns:1fr; }
    .sf-footer__top{ grid-template-columns:1fr; }
    .sf-footer__bottom{ flex-direction:column; align-items:flex-start; }
    .sf-toast{ left:16px; right:16px; bottom:16px; }
}

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion:reduce){
    *{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}
body.sf-lock{ overflow:hidden; }